Trustmark (TRMK) 10-K24 Feb 142013 FY Annual reportFinancial data

Company Profile

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 31, 2013	Jan. 31, 2014	Jun. 30, 2013
Document and Entity Information [Abstract]	'	'	'
Entity Registrant Name	'TRUSTMARK CORP	'	'
Entity Central Index Key	'0000036146	'	'
Current Fiscal Year End Date	'--12-31	'	'
Entity Well-known Seasoned Issuer	'Yes	'	'
Entity Voluntary Filers	'No	'	'
Entity Current Reporting Status	'Yes	'	'
Entity Filer Category	'Large Accelerated Filer	'	'
Entity Public Float	'	'	$1,501
Entity Common Stock, Shares Outstanding	'	67,414,494	'
Document Fiscal Year Focus	'2013	'	'
Document Fiscal Period Focus	'FY	'	'
Document Type	'10-K	'	'
Amendment Flag	'false	'	'
Document Period End Date	31-Dec-13	'	'

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Assets	'	'
Cash and due from banks (noninterest-bearing)	$345,761	$231,489
Federal funds sold and securities purchased under reverse repurchase agreements	7,253	7,046
Securities available for sale (at fair value)	2,194,154	2,657,745
Securities held to maturity (fair value: $1,150,833-2013; $46,888-2012)	1,168,728	42,188
Loans held for sale (LHFS)	149,169	257,986
Loans held for investment (LHFI)	5,798,881	5,592,754
Less allowance for loan losses, LHFI	66,448	78,738
Net LHFI	5,732,433	5,514,016
Acquired loans:	'	'
Noncovered loans	769,990	81,523
Covered loans	34,216	52,041
Allowance for loan losses, acquired loans	9,636	6,075
Net acquired loans	794,570	127,489
Net LHFI and acquired loans	6,527,003	5,641,505
Premises and equipment, net	207,283	154,841
Mortgage servicing rights	67,834	47,341
Goodwill	372,851	291,104
Identifiable intangible assets	41,990	17,306
Other real estate, excluding covered other real estate	106,539	78,189
Covered other real estate	5,108	5,741
FDIC indemnification asset	14,347	21,774
Other assets	582,363	374,412
Total Assets	11,790,383	9,828,667
Deposits:	'	'
Noninterest-bearing	2,663,503	2,254,211
Interest-bearing	7,196,399	5,642,306
Total deposits	9,859,902	7,896,517
Federal funds purchased and securities sold under repurchase agreements	251,587	288,829
Short-term borrowings	66,385	86,920
Long-term FHLB advances	8,458	0
Subordinated notes	49,904	49,871
Junior subordinated debt securities	61,856	61,856
Other liabilities	137,338	157,305
Total Liabilities	10,435,430	8,541,298
Commitments and Contingencies	'	'
Shareholders' Equity	'	'
Common stock, no par value: Authorized: 250,000,000 shares Issued and outstanding: 67,372,980 shares - 2013; 64,820,414 shares - 2012	14,038	13,506
Capital surplus	349,680	285,905
Retained earnings	1,034,966	984,563
Accumulated other comprehensive (loss) income, net of tax	-43,731	3,395
Total Shareholders' Equity	1,354,953	1,287,369
Total Liabilities and Shareholders' Equity	$11,790,383	$9,828,667

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Assets	'	'
Securities held to maturity, fair value	$1,150,833	$46,888
Shareholders' Equity	'	'
Common stock, par value (in dollars per share)	$0	$0
Common stock, authorized (in shares)	250,000,000	250,000,000
Common stock, issued (in shares)	67,372,980	64,820,414
Common stock, outstanding (in shares)	67,372,980	64,820,414

Consolidated_Statements_of_Inc

Consolidated Statements of Income (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Interest Income	'	'	'
Interest and fees on LHFI & LHFS	$258,550	$279,796	$299,816
Interest and fees on acquired loans	76,336	18,122	9,424
Interest on securities:	'	'	'
Taxable	72,818	66,950	75,843
Tax exempt	5,145	5,423	5,545
Interest on federal funds sold and securities purchased under reverse repurchase agreements	31	26	30
Other interest income	1,466	1,342	1,321
Total Interest Income	414,346	371,659	391,979
Interest Expense	'	'	'
Interest on deposits	19,718	24,604	36,294
Interest on federal funds purchased and securities sold under repurchase agreements	379	588	965
Other interest expense	5,762	5,477	5,777
Total Interest Expense	25,859	30,669	43,036
Net Interest Income	388,487	340,990	348,943
Provision for loan losses, LHFI	-13,421	6,766	29,704
Provision for loan losses, acquired loans	6,039	5,528	624
Net Interest Income After Provision for Loan Losses	395,869	328,696	318,615
Noninterest Income	'	'	'
Service charges on deposit accounts	51,576	50,351	51,707
Bank card and other fees	35,961	30,445	27,474
Mortgage banking, net	33,504	40,960	26,812
Insurance commissions	30,826	28,205	26,966
Wealth management	29,480	23,056	22,962
Other, net	-7,973	1,113	3,853
Securities gains, net	485	1,059	80
Total Noninterest Income	173,859	175,189	159,854
Noninterest Expense	'	'	'
Salaries and employee benefits	221,727	190,519	178,556
Services and fees	53,904	46,751	43,858
Net occupancy - premises	25,961	20,267	20,254
Equipment expense	24,538	20,478	20,177
ORE/Foreclosure expense	15,039	11,165	16,293
FDIC assessment expense	9,001	6,502	7,984
Other expense	65,561	48,820	42,728
Total Noninterest Expense	415,731	344,502	329,850
Income Before Income Taxes	153,997	159,383	148,619
Income taxes	36,937	42,100	41,778
Net Income	$117,060	$117,283	$106,841
Earnings Per Common Share	'	'	'
Basic (in dollars per share)	$1.75	$1.81	$1.67
Diluted (in dollars per share)	$1.75	$1.81	$1.66

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Consolidated Statements of Comprehensive Income [Abstract]	'	'	'
Net income per consolidated statements of income	$117,060	$117,283	$106,841
Unrealized (losses) gains on available for sale securities and transferred securities:	'	'	'
Unrealized holding (losses) gains arising during the period	-41,456	60	24,475
Less: adjustment for net gains realized in net income	-299	-654	-49
Net unrealized holding loss on securities transferred to held to maturity	-28,642	0	0
Pension and other postretirement benefit plans, Net of tax amount: [Abstract]	'	'	'
Net change in prior service costs	155	32	-591
Net decrease (increase) in actuarial gains / losses	21,592	836	-9,288
Derivatives:	'	'	'
Change in the accumulated gain on effective cash flow hedge derivatives	1,524	0	0
Other comprehensive (loss) income, net of tax	-47,126	274	14,547
Comprehensive income	$69,934	$117,557	$121,388

Consolidated_Statements_of_Cha

Consolidated Statements of Changes in Shareholders' Equity (USD $)	Common Stock [Member]	Capital Surplus [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
Balance at Dec. 31, 2010	$13,318,000	$256,675,000	$890,917,000	($11,426,000)	$1,149,484,000
Balance (in shares) at Dec. 31, 2010	63,917,591	'	'	'	'
Net income per consolidated statements of income	0	0	106,841,000	0	106,841,000
Other comprehensive income (loss)	0	0	0	14,547,000	14,547,000
Cash dividends paid on common stock	0	0	-59,485,000	0	-59,485,000
Common stock issued, long-term incentive plan (in shares)	224,907	'	'	'	'
Common stock issued, long-term incentive plan	46,000	5,560,000	-5,747,000	0	-141,000
Compensation expense, long-term incentive plan	0	3,791,000	0	0	3,791,000
Balance at Dec. 31, 2011	13,364,000	266,026,000	932,526,000	3,121,000	1,215,037,000
Balance (in shares) at Dec. 31, 2011	64,142,498	'	'	'	'
Net income per consolidated statements of income	0	0	117,283,000	0	117,283,000
Other comprehensive income (loss)	0	0	0	274,000	274,000
Cash dividends paid on common stock	0	0	-59,961,000	0	-59,961,000
Common stock issued, long-term incentive plan (in shares)	167,715	'	'	'	'
Common stock issued, long-term incentive plan	36,000	4,012,000	-5,285,000	0	-1,237,000
Common stock issued, business combination	106,000	11,894,000	0	0	12,000,000
Common stock issued, business combination (in shares)	510,201	'	'	'	'
Compensation expense, long-term incentive plan	0	3,973,000	0	0	3,973,000
Balance at Dec. 31, 2012	13,506,000	285,905,000	984,563,000	3,395,000	1,287,369,000
Balance (in shares) at Dec. 31, 2012	64,820,414	'	'	'	64,820,414
Net income per consolidated statements of income	0	0	117,060,000	0	117,060,000
Other comprehensive income (loss)	0	0	0	-47,126,000	-47,126,000
Cash dividends paid on common stock	0	0	-62,276,000	0	-62,276,000
Common stock issued, long-term incentive plan (in shares)	307,696	'	'	'	'
Common stock issued, long-term incentive plan	64,000	7,149,000	-4,381,000	0	2,832,000
Common stock issued, business combination	468,000	53,027,000	0	0	53,495,000
Common stock issued, business combination (in shares)	2,244,870	'	'	'	'
Compensation expense, long-term incentive plan	0	3,599,000	0	0	3,599,000
Balance at Dec. 31, 2013	$14,038,000	$349,680,000	$1,034,966,000	($43,731,000)	$1,354,953,000
Balance (in shares) at Dec. 31, 2013	67,372,980	'	'	'	67,372,980

Consolidated_Statements_of_Cha1

Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Consolidated Statements of Changes in Shareholders' Equity [Abstract]	'	'	'
Cash dividends paid on common stock (in dollars per share)	$0.92	$0.92	$0.92

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Operating Activities	'	'	'
Net income	$117,060	$117,283	$106,841
Adjustments to reconcile net income to net cash provided by operating activities:	'	'	'
Provision for loan losses, net	-7,382	12,294	30,328
Depreciation and amortization	37,153	29,275	25,273
Net amortization of securities	6,427	7,008	9,187
Securities gains, net	-485	-1,059	-80
Gains on sales of loans, net	-26,422	-33,918	-11,952
Bargain purchase gain on acquisitions	0	-3,635	-7,456
Deferred income tax provision (benefit)	21,163	-8,452	-9,683
Proceeds from sales of loans held for sale	1,383,967	1,849,712	981,349
Purchases and originations of loans held for sale	-1,270,460	-1,856,293	-1,003,803
Originations and sales of mortgage servicing rights, net	-18,481	-23,253	-14,160
Net (increase) decrease in other assets	-92,327	-35,816	34,423
Net (decrease) increase in other liabilities	-2,319	16,482	2,609
Other operating activities, net	7,523	22,497	30,713
Net cash provided by operating activities	155,417	92,125	173,589
Investing Activities	'	'	'
Proceeds from calls and maturities of securities held to maturity	13,374	15,534	83,219
Proceeds from calls and maturities of securities available for sale	766,858	917,316	749,149
Proceeds from sales of securities available for sale	227,930	34,826	22,996
Purchases of securities held to maturity	-35,045	0	0
Purchases of securities available for sale	-1,227,860	-1,122,480	-1,026,936
Net (increase) decrease in federal funds sold and securities purchased under reverse repurchase agreements	-207	2,212	3,515
Net decrease in loans	18,266	250,508	141,988
Purchases of premises and equipment	-15,989	-17,172	-12,184
Proceeds from sales of premises and equipment	4,168	4	537
Proceeds from sales of other real estate	46,267	34,992	54,104
Net cash received in business combination	89,037	78,151	78,896
Net cash (used in) provided by investing activities	-113,201	193,891	95,284
Financing Activities	'	'	'
Net increase in deposits	223,131	121,358	317,447
Net decrease in federal funds purchased and securities sold under repurchase agreements	-37,242	-315,671	-95,638
Net decrease in short-term borrowings	-20,858	-1,641	-389,666
Payments on long-term FHLB advances	-531	0	-309
Redemption of junior subordinated debt securities	-33,000	0	0
Common stock dividends	-62,276	-59,961	-59,485
Common stock issued-net, long-term incentive plan	3,640	-1,318	-595
Excess tax (expense) benefit from stock-based compensation arrangements	-808	81	454
Net cash provided by (used in) financing activities	72,056	-257,152	-227,792
Increase in cash and cash equivalents	114,272	28,864	41,081
Cash and cash equivalents at beginning of year	231,489	202,625	161,544
Cash and cash equivalents at end of year	$345,761	$231,489	$202,625

Significant_Accounting_Policie

Significant Accounting Policies

12 Months Ended

Dec. 31, 2013

Significant Accounting Policies [Abstract]

Significant Accounting Policies

Note 1 – Significant Accounting Policies

Business

Trustmark Corporation (Trustmark) is a multi-bank holding company headquartered in Jackson, Mississippi. Through its subsidiaries, Trustmark operates as a financial services organization providing banking and financial solutions to corporate institutions and individual customers through 208 offices in Alabama, Florida, Mississippi, Tennessee and Texas.

Basis of Financial Statement Presentation

The consolidated financial statements include the accounts of Trustmark and all other entities in which Trustmark has a controlling financial interest. All significant intercompany accounts and transactions have been eliminated in consolidation. Certain reclassifications have been made to prior period amounts to conform to the current period presentation.

The consolidated financial statements have been prepared in conformity with U.S. generally accepted accounting principles (GAAP). The preparation of financial statements in conformity with these accounting principles requires Management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and income and expense during the reporting period and the related disclosures. Although Management’s estimates contemplate current conditions and how they are expected to change in the future, it is reasonably possible that in 2014 actual conditions could vary from those anticipated, which could affect our results of operations and financial condition. The allowance for loan losses, the amount and timing of expected cash flows from acquired loans and the Federal Deposit Insurance Corporation (FDIC) indemnification asset, the valuation of other real estate, the fair value of mortgage servicing rights, the valuation of goodwill and other identifiable intangibles, the status of contingencies and the fair values of financial instruments are particularly subject to change. Actual results could differ from those estimates.

Securities

Securities are classified as either held to maturity, available for sale or trading. Securities are classified as held to maturity and carried at amortized cost when Management has the positive intent and the ability to hold them until maturity. Securities to be held for indefinite periods of time are classified as available for sale and carried at fair value, with the unrealized holding gains and losses reported as a component of other comprehensive income, net of tax. Securities available for sale are used as part of Trustmark’s interest rate risk management strategy and may be sold in response to changes in interest rates, changes in prepayment rates and other factors. Management determines the appropriate classification of securities at the time of purchase. Trustmark currently has no securities classified as trading.

The amortized cost of debt securities classified as securities held to maturity or securities available for sale is adjusted for amortization of premiums and accretion of discounts to maturity over the estimated life of the security using the interest method. Such amortization or accretion is included in interest on securities. Realized gains and losses are determined using the specific identification method and are included in noninterest income as securities gains, net.

Securities transferred from the available for sale category to the held to maturity category are recorded at fair value at the date of transfer. Unrealized holding gains or losses associated with the transfer of securities from available for sale to held to maturity are included in the balance of accumulated other comprehensive income (loss) in the consolidated balance sheets. These unrealized holding gains or losses are amortized over the remaining life of the security as a yield adjustment in a manner consistent with the amortization or accretion of the original purchase premium or discount on the associated security.

Trustmark reviews securities for impairment quarterly. Declines in the fair value of held to maturity and available for sale securities below their cost that are deemed to be other than temporary are reflected in earnings as realized losses to the extent the impairment is related to credit losses. The amount of the impairment related to other factors is recognized in other comprehensive income. In estimating other-than-temporary impairment losses, Management considers, among other things, the length of time and the extent to which the fair value has been less than cost, the financial condition and near-term prospects of the issuer and Trustmark’s intent and ability to hold the security for a period of time sufficient to allow for any anticipated recovery in fair value.

Loans Held for Sale (LHFS)

Primarily, all mortgage loans purchased from wholesale customers or originated in Trustmark’s General Banking Division are considered to be held for sale. In certain circumstances, Trustmark will retain a mortgage loan in its portfolio based on banking relationships or certain investment strategies. Mortgage loans held for sale in the secondary market that are hedged using fair value hedges are carried at estimated fair value on an aggregate basis. Substantially, all mortgage loans held for sale are hedged. These loans are primarily first-lien mortgage loans originated or purchased by Trustmark. Deferred loan fees and costs are reflected in the basis of loans held for sale and, as such, impact the resulting gain or loss when loans are sold. Adjustments to reflect fair value and realized gains and losses upon ultimate sale of the loans are recorded in noninterest income in mortgage banking, net.

Government National Mortgage Association (GNMA) optional repurchase programs allow financial institutions to buy back individual delinquent mortgage loans that meet certain criteria from the securitized loan pool for which the institution provides servicing. At the servicer’s option and without GNMA’s prior authorization, the servicer may repurchase such a delinquent loan for an amount equal to 100 percent of the remaining principal balance of the loan. Under Financial Accounting Standards Board (FASB) Accounting Standards Codification (ASC) Topic 860, “Transfers and Servicing,” this buy-back option is considered a conditional option until the delinquency criteria are met, at which time the option becomes unconditional. When Trustmark is deemed to have regained effective control over these loans under the unconditional buy-back option, the loans can no longer be reported as sold and must be brought back onto the balance sheet as loans held for sale, regardless of whether Trustmark intends to exercise the buy-back option. These loans are reported as held for sale with the offsetting liability being reported as short-term borrowings.

Loans Held for Investment (LHFI)

LHFI are stated at the amount of unpaid principal, adjusted for the net amount of direct costs and nonrefundable loan fees associated with lending. The net amount of nonrefundable loan origination fees and direct costs associated with the lending process, including commitment fees, is deferred and accreted to interest income over the lives of the loans using a method that approximates the interest method. Interest on LHFI is accrued and recorded as interest income based on the outstanding principal balance.

Trustmark has established acceptable ranges or limits for specific types of credit. Within these categories, the overall risk of individual credits is restrained by defined maximum advance rates and repayment periods, minimum debt service coverage ratios, and continuous monitoring of these measures throughout the life of the loan. These policy directives are periodically reviewed to ensure that they continue to reflect underwriting considerations deemed essential to maintaining a sound loan portfolio. It is recognized that not all extensions of credit will fully comply with policy limitations. Accordingly, such exceptions to loan policy must be justified by other mitigating features of the loan and must receive proper approval as designated in the loan policy.

Past due LHFI are loans contractually past due 30 days or more as to principal or interest payments. A LHFI is classified as nonaccrual, and the accrual of interest on such loan is discontinued, when the contractual payment of principal or interest becomes 90 days past due on commercial credits and 120 days past due on non-business purpose credits. In addition, a credit may be placed on nonaccrual at any other time Management has serious doubts about further collectibility of principal or interest according to the contractual terms, even though the loan is currently performing. A LHFI may remain in accrual status if it is in the process of collection and well secured. When a LHFI is placed in nonaccrual status, unpaid interest is reversed against interest income. Interest received on nonaccrual LHFI is applied against principal. LHFI are restored to accrual status when the obligation is brought current or has performed in accordance with the contractual terms for a reasonable period of time, and the ultimate collectibility of the total contractual principal and interest is no longer in doubt.

A LHFI is considered impaired when, based on current information and events, it is probable that Trustmark will be unable to collect the scheduled payments of principal or interest when due according to the contractual terms of the loan agreement. If a LHFI is impaired, a specific valuation allowance is allocated, if necessary, so that the loan is reported net, at the present value of estimated future cash flows using the loan’s existing rate or at the fair value of collateral if repayment is expected solely from the collateral. All classes of commercial LHFI of $500,000 or more, which are classified as nonaccrual, are identified for impairment analysis. Interest payments on impaired LHFI are applied to principal. The policy for recognizing income on impaired LHFI is consistent with the nonaccrual policy. Impaired LHFI, or portions thereof, are charged off when deemed uncollectible.

Commercial purpose LHFI are charged off when a determination is made that the loan is uncollectible and continuance as a bankable asset is not warranted. Consumer LHFI secured by 1-4 family residential real estate are generally charged off or written down to the fair value of the collateral less cost to sell at no later than 180 days of delinquency. Non-real estate consumer purpose LHFI, including both secured and unsecured loans, are generally charged off by 120 days of delinquency. Consumer revolving lines of credit and credit card debt are generally charged off on or prior to 180 days of delinquency.

Allowance for Loan Losses, LHFI

The allowance for loan losses, LHFI is established through provisions for estimated loan losses charged against net income. The allowance account is maintained at a level which is believed to be adequate by Management based on estimated probable losses within the LHFI portfolio. Evaluations of the portfolio and individual credits are inherently subjective, as they require estimates, assumptions, and judgments as to the facts and circumstances of particular situations. Some of the factors considered, such as amounts and timing of future cash flows expected to be received, may be susceptible to significant change.

Trustmark's allowance methodology is based on guidance provided in Securities and Exchange Commission (SEC) Staff Accounting Bulletin (SAB) No. 102, "Selected Loan Loss Allowance Methodology and Documentation Issues," as well as other regulatory guidance. The allowance for loan losses, LHFI consists of three components: (i) a historical valuation allowance determined in accordance with FASB ASC Topic 450, "Contingencies," based on historical loan loss experience for LHFI with similar characteristics and trends, (ii) a specific valuation allowance determined in accordance with FASB ASC Topic 310 "Receivables," based on probable losses on specific LHFI, and (iii) a qualitative risk valuation allowance determined in accordance with FASB ASC Topic 450 based on general economic conditions and other specific internal and external qualitative risk factors. Each of these components calls for estimates, assumptions, and judgments as described below.

Historical Valuation Allowance

The historical valuation allowance is derived by application of a historical net loss percentage to the outstanding balances of LHFI contained in designated pools and risk rating categories. Pools are established by grouping credits that display similar characteristics and trends such as commercial LHFI for working capital purposes and non-working capital purposes, commercial real estate LHFI (which are further segregated into construction, land, lots and development, owner-occupied and non-owner occupied categories), 1-4 family mortgage LHFI and other consumer LHFI. LHFI are further segregated based on Trustmark's internal credit risk rating process that evaluates, among other things: the obligor's ability and willingness to pay, the value of underlying collateral, the ability of guarantors to meet their payment obligations, management experience and effectiveness, and the economic environment and industry in which the borrower operates. The historical net loss percentages, calculated on a quarterly basis, are proportionally distributed to each grade within loan groups based upon degree of risk.

Loans-Specific Valuation Allowance

Once a LHFI is classified, it is subject to periodic review to determine whether or not the loan is impaired. If determined to be impaired, the loan is evaluated using one of the valuation criteria contained in FASB ASC Topic 310. A formal impairment analysis is performed on all commercial non-accrual LHFI with an outstanding balance of $500,000 or more, and based upon this analysis LHFI are written down to net realizable value.

Qualitative Risk Valuation Allowance

The qualitative risk valuation allowance is based on general economic conditions and other internal and external factors affecting Trustmark as a whole as well as specific LHFI. Factors considered include the following within Trustmark's five key market regions: the experience, ability, and effectiveness of Trustmark's lending management and staff; adherence to Trustmark's loans policies, procedures, and internal controls; the volume of exceptions relating to collateral, underwriting and financial documentation; credit concentrations; recent performance trends; loan facility risk, which embodies the nature, frequency and duration of the repayment structure as it pertains to the actual source of loan repayment; regional economic trends; the impact of recent acquisitions; and the impact of significant natural disasters. These factors are evaluated on a quarterly basis with the results incorporated into qualitative factor allocation matrices which are used to establish an appropriate allowance.

Acquired Loans

Acquired loans are accounted for under the acquisition method of accounting. The acquired loans are recorded at their estimated fair values at the time of acquisition. Fair value of acquired loans is determined using a discounted cash flow model based on assumptions regarding the amount and timing of principal and interest payments, estimated prepayments, estimated default rates, estimated loss severity in the event of defaults, and current market rates. Estimated credit losses are included in the determination of fair value; therefore, an allowance for loan losses is not recorded on the acquisition date.

Trustmark accounts for acquired impaired loans under FASB ASC Topic 310-30, “Loans and Debt Securities Acquired with Deteriorated Credit Quality.” An acquired loan is considered impaired when there is evidence of credit deterioration since origination and it is probable at the date of acquisition that Trustmark would be unable to collect all contractually required payments. Acquired loans accounted for under FASB ASC Topic 310-30 are referred to as “acquired impaired loans.” Revolving credit agreements, such as home equity lines and commercial leases, are excluded from acquired impaired loan accounting requirements.

For acquired impaired loans, Trustmark (a) calculates the contractual amount and timing of undiscounted principal and interest payments (the “undiscounted contractual cash flows”) and (b) estimates the amount and timing of undiscounted expected principal and interest payments (the “undiscounted expected cash flows”). Under FASB ASC Topic 310-30, the difference between the undiscounted contractual cash flows and the undiscounted expected cash flows is the nonaccretable difference. The nonaccretable difference represents an estimate of the loss exposure of principal and interest related to the acquired impaired loan portfolio, and such amount is subject to change over time based on the performance of such loans. The excess of undiscounted expected cash flows at acquisition over the initial fair value of acquired impaired loans is referred to as the “accretable yield” and is recorded as interest income over the estimated life of the loans using the effective yield method if the timing and amount of the future cash flows is reasonably estimable.

Trustmark aggregates certain acquired loans into pools of loans with common credit risk characteristics such as loan type and risk rating. To establish accounting pools of acquired loans, loans are first categorized by similar purpose, collateral and geographic region. Within each category, loans are further segmented by ranges of risk determinants observed at the time of acquisition. For commercial loans, the primary risk determinant is the risk rating as assigned by Trustmark. For consumer loans, the risk determinants include delinquency, delinquency history and FICO scores. Statistical comparison of the pools reflect that each pool is comprised of loans generally of similar characteristics, including loan type, loan risk and weighted average life. Each pool is then reviewed for similarity of the pool constituents, including standard deviation of purchase price, weighted average life and concentration of the largest loans. Loan pools are initially booked at the aggregate fair value of the loan pool constituents, based on the present value of Trustmark's expected cash flows from the loans. An acquired loan is removed from a pool of loans only if the loan is sold, foreclosed, or payment is received in full satisfaction of the loan. The acquired loan is removed from the pool at the carrying value. If an individual acquired loan is removed from a pool of loans, the difference between its relative carrying amount and its cash, fair value of the collateral, or other assets received will be recognized as a gain or loss immediately in interest income on loans and would not affect the effective yield used to recognize the accretable yield on the remaining pool. Certain acquired loans are not pooled and are accounted for individually. Such loans are withheld from pools due to the inherent uncertainty of the timing and amount of their cash flows or because they are not a suitable similar constituent to the established pools.

As required by FASB ASC Topic 310-30, Trustmark periodically re-estimates the expected cash flows to be collected over the life of the acquired impaired loans. If, based on current information and events, it is probable that Trustmark will be unable to collect all cash flows expected at acquisition plus additional cash flows expected to be collected arising from changes in estimate after acquisition, the acquired loans are considered impaired. The decrease in the expected cash flows reduces the carrying value of the acquired impaired loans as well as the accretable yield and results in a charge to income through the provision for loan losses, acquired loans and the establishment of an allowance for loan losses, acquired loans. If, based on current information and events, it is probable that there is a significant increase in the cash flows previously expected to be collected or if actual cash flows are significantly greater than cash flows previously expected, Trustmark will reduce any remaining allowance for loan losses, acquired loans established on the acquired impaired loans for the increase in the present value of cash flows expected to be collected. The increase in the expected cash flows for the acquired impaired loans over those originally estimated at acquisition increases the carrying value of the acquired impaired loans as well as the accretable yield. The increase in the accretable yield is recognized as interest income prospectively over the remaining life of the acquired impaired loans. The carrying value of acquired impaired loans is reduced by payments received, both principal and interest, and increased by the portion of the accretable yield recognized as interest income.

Under FASB ASC Topic 310-30, acquired impaired loans are generally considered accruing and performing loans as the loans accrete interest income over the estimated life of the loan when expected cash flows are reasonably estimable. Accordingly, acquired impaired loans that are contractually past due are still considered to be accruing and performing loans as long as the estimated cash flows are received as expected. If the timing and amount of cash flows is not reasonably estimable, the loans may be classified as nonaccrual loans and interest income may be recognized on a cash basis or as a reduction of the principal amount outstanding.

Covered Loans

Loans acquired in a FDIC-assisted transaction and covered under loss-share agreements are referred to as “covered loans” and are reported separately in Trustmark’s consolidated financial statements. Covered loans are recorded at their estimated fair value at the time of acquisition exclusive of the expected reimbursement cash flows from the FDIC.

FDIC Indemnification Asset

Trustmark has elected to account for amounts receivable under a loss-share agreement as an indemnification asset in accordance with FASB ASC Topic 805, “Business Combinations.” A FDIC indemnification asset is initially recorded at fair value, based on the discounted value of expected future cash flows under the loss-share agreement. The difference between the present value at the acquisition date and the undiscounted cash flows Trustmark expects to collect from the FDIC is accreted into noninterest income over the life of the FDIC indemnification asset. Pursuant to the provisions of the loss-share agreement, the FDIC indemnification asset is presented net of any true-up provision due to the FDIC at the termination of the loss-share agreement. Please refer to Note 2 – Business Combinations for additional information regarding the FDIC true-up provision under the loss-share agreement.

The FDIC indemnification asset is reduced as expected losses on covered loans and covered other real estate decline or as loss-share claims are submitted to the FDIC. The FDIC indemnification asset is revalued concurrent with the loan re-estimation and adjusted for any changes in expected cash flows based on recent performance and expectations for future performance of covered loans and covered other real estate. These adjustments are measured on the same basis as the related covered loans and covered other real estate. Increases in the cash flows of the covered loans and covered other real estate over those expected reduce the FDIC indemnification asset, and decreases in the cash flows of the covered loans and covered other real estate under those expected increase the FDIC indemnification asset. Increases and decreases to the FDIC indemnification asset are recorded as adjustments to noninterest income.

In October 2012, FASB issued Accounting Standard Update (ASU) 2012-06, “Business Combinations (Topic 805): Subsequent Accounting for an Indemnification Asset Recognized at the Acquisition Date as a Result of a Government-Assisted Acquisition of a Financial Institution (a consensus of the FASB Emerging Issues Task Force),” to address the diversity in practice regarding how to account for the subsequent measurement of an indemnification asset recognized as a result of a government-assisted acquisition of a financial institution. ASU 2012-06 requires that the indemnification asset be measured subsequently on the same basis as the indemnified assets and, if the effect of the change in the cash flows expected to be collected on an indemnification asset must be amortized, the amortization period is limited to the lesser of the term of the indemnification agreement or the remaining life of the indemnified asset.

Trustmark has accounted for the FDIC indemnification asset using the “collectibility method,” which recognized write-downs of the FDIC indemnification asset resulting from improvements in expected cash flows and covered losses based on the re-estimation of the acquired covered loans, pay-offs of acquired covered loans, sales of covered other real estate, or reductions in FDIC loss claims immediately in noninterest income. Under ASU 2012-06, write-downs of the FDIC indemnification asset resulting from improvements in expected cash flows and covered losses based on the re-estimation of acquired covered loans will be amortized over the lesser of the remaining life or contractual period of the acquired covered loan as a yield adjustment consistent with the associated acquired covered loan. All other valuation changes of the FDIC indemnification asset (i.e., pay-offs of acquired covered loans, sales of covered other real estate, and reductions of FDIC loss claims) will continue to be accounted for under the “collectibility method.” The amendments in ASU 2012-06 are effective prospectively for interim and annual periods beginning on or after December 15, 2012, and, therefore, were effective for Trustmark’s consolidated financial statements as of January 1, 2013. As a result of the adoption of the amendments in ASU 2012-06 and improvements in the expected cash flows and lower loss expectations for active acquired covered loans during the year, other noninterest income for 2013 included $2.5 million of amortization of the FDIC indemnification asset.

Premises and Equipment, Net

Premises and equipment are stated at cost, less accumulated depreciation and amortization. Depreciation is charged to expense over the estimated useful lives of the assets, which are up to thirty-nine years for buildings and three to ten years for furniture and equipment. Leasehold improvements are amortized over the terms of the respective leases or the estimated useful lives of the improvements, whichever is shorter. In cases where Trustmark has the right to renew the lease for additional periods, the lease term for the purpose of calculating amortization of the capitalized cost of the leasehold improvements is extended when Trustmark is “reasonably assured” that it will renew the lease. Depreciation and amortization expenses are computed using the straight-line method. Trustmark continually evaluates whether events and circumstances have occurred that indicate that such long-lived assets have become impaired. Measurement of any impairment of such long-lived assets is based on the fair values of those assets. There were no impairment losses on premises and equipment recorded during 2013, 2012 or 2011.

Mortgage Servicing Rights

Trustmark recognizes as assets the rights to service mortgage loans based on the estimated fair value of the mortgage servicing rights (MSR) when loans are sold and the associated servicing rights are retained. Trustmark has elected to account for MSR at fair value.

The fair value of MSR is determined using discounted cash flow techniques benchmarked against third-party valuations. Estimates of fair value involve several assumptions, including the key valuation assumptions about market expectations of future prepayment rates, interest rates and discount rates which are provided by a third-party firm. Prepayment rates are projected using an industry standard prepayment model. The model considers other key factors, such as a wide range of standard industry assumptions tied to specific portfolio characteristics such as remittance cycles, escrow payment requirements, geographic factors, foreclosure loss exposure, VA no-bid exposure, delinquency rates and cost of servicing, including base cost and cost to service delinquent mortgages. Prevailing market conditions at the time of analysis are factored into the accumulation of assumptions and determination of servicing value.

Trustmark economically hedges changes in fair value of the MSR attributable to interest rates. See Note 1 – Significant Accounting Policies, “Derivative Financial Instruments – Derivatives not Designated as Hedging Instruments” for information regarding these derivative instruments.

Goodwill and Identifiable Intangible Assets

Trustmark accounts for goodwill and other intangible assets in accordance with FASB ASC Topic 350, “Intangibles – Goodwill and Other.” Goodwill, which represents the excess of cost over the fair value of the net assets of an acquired business, is not amortized but tested for impairment on an annual basis, which is October 1 for Trustmark, or more often if events or circumstances indicate that there may be impairment.

Identifiable intangible assets are acquired assets that lack physical substance but can be distinguished from goodwill because of contractual or legal rights or because the assets are capable of being sold or exchanged either on their own or in combination with a related contract, asset or liability. Trustmark’s identifiable intangible assets primarily relate to core deposits, insurance customer relationships and borrower relationships. These intangibles, which have definite useful lives, are amortized on an accelerated basis over their estimated useful lives. In addition, these intangibles are evaluated annually for impairment or whenever events and changes in circumstances indicate that the carrying amount should be reevaluated. Trustmark also purchased banking charters in order to facilitate its entry into the states of Florida and Texas. These identifiable intangible assets are being amortized on a straight-line method over 20 years.

Other Real Estate

Other real estate includes assets that have been acquired in satisfaction of debt through foreclosure and is recorded at the lower of cost or estimated fair value less the estimated cost of disposition. Fair value is based on independent appraisals and other relevant factors. Valuation adjustments required at foreclosure are charged to the allowance for loan losses. Other real estate is revalued on an annual basis or more often if market conditions necessitate. Subsequent to foreclosure, losses on the periodic revaluation of the property are charged against an other real estate specific reserve or net income in ORE/Foreclosure expense, if a reserve does not exist. Costs of operating and maintaining the properties as well as gains (losses) on their disposition are also included in ORE/Foreclosure expense as incurred. Improvements made to properties are capitalized if the expenditures are expected to be recovered upon the sale of the properties.

Covered Other Real Estate

All other real estate acquired in a FDIC-assisted acquisition that is subject to a FDIC loss-share agreement is referred to as “covered other real estate” and reported separately in Trustmark’s consolidated balance sheets. Covered other real estate is reported exclusive of expected reimbursement cash flows from the FDIC. Foreclosed covered loan collateral is transferred into covered other real estate at the collateral’s net realizable value.

Covered other real estate is initially recorded at its estimated fair value on the acquisition date based on an independent appraisal less estimated selling costs. Any subsequent valuation adjustments due to declines in fair value are charged to ORE/Foreclosure expense and are mostly offset by other noninterest income representing the corresponding increase to the FDIC indemnification asset for the offsetting loss reimbursement amount. Any recoveries of previous valuation adjustments are credited to ORE/Foreclosure expense with a corresponding charge to other noninterest income for the portion of the recovery that is due to the FDIC.

Federal Home Loan Bank and Federal Reserve Stock

Securities with limited marketability, such as stock in the Federal Reserve Bank (FRB) and the Federal Home Loan Bank (FHLB), are carried at cost. Trustmark’s investment in member bank stock is included in other assets because these equity securities do not have a readily determinable fair value, which places them outside the scope of FASB ASC Topic 320, “Investments – Debt and Equity Securities.” At December 31, 2013 and 2012, Trustmark’s investment in member bank stock totaled $28.4 million and $25.6 million, respectively. The carrying value of Trustmark’s member bank stock gave rise to no other-than-temporary impairment for the years ended December 31, 2013, 2012 and 2011.

Insurance Commissions

Commission revenue is recognized as of the effective date of the insurance policy or the date the customer is billed, whichever is later. Trustmark also receives contingent commissions from insurance companies as additional incentive for achieving specified premium volume goals and/or the loss experience of the insurance placed by Trustmark. Contingent commissions from insurance companies are recognized through the calendar year using reasonable estimates that are continuously reviewed and revised to reflect current experience. Trustmark maintains reserves for commission adjustments and doubtful accounts receivable which were not considered significant at December 31, 2013 or 2012.

Wealth Management

Assets under administration held by Trustmark in a fiduciary or agency capacity for customers are not included in the consolidated balance sheets. Investment management and trust income is recorded on a cash basis, which because of the regularity of the billing cycles, approximates the accrual method, in accordance with industry practice.

Derivative Financial Instruments

Trustmark maintains an overall interest rate risk management strategy that incorporates the use of derivative instruments to minimize significant unplanned fluctuations in earnings and cash flows caused by interest rate volatility. Trustmark’s interest rate risk management strategy involves modifying the repricing characteristics of certain assets and liabilities so that changes in interest rates do not adversely affect the net interest margin and cash flows. Under the guidelines of FASB ASC Topic 815, “Derivatives and Hedging,” all derivative instruments are required to be recognized as either assets or liabilities and carried at fair value on the balance sheet. The fair value of derivative positions outstanding is included in other assets and/or other liabilities in the accompanying consolidated balance sheets and in the net change in these financial statement line items in the accompanying consolidated statements of cash flows as well as included in noninterest income in the accompanying consolidated statements of income and other comprehensive (loss) income in the accompanying consolidated statements of comprehensive income.

Derivatives Designated as Hedging Instruments

As part of Trustmark’s risk management strategy in the mortgage banking area, derivative instruments such as forward sales contracts are utilized. Trustmark’s obligations under forward contracts consist of commitments to deliver mortgage loans, originated and/or purchased, in the secondary market at a future date. These derivative instruments are designated as fair value hedges under FASB ASC Topic 815. The ineffective portion of changes in the fair value of the forward contracts and changes in the fair value of the loans designated as loans held for sale are recorded in noninterest income in mortgage banking, net.

On April 4, 2013, Trustmark entered into a forward interest rate swap contract on its junior subordinated debentures, with the objective of protecting the quarterly interest payments from the risk of variability of those payments resulting from changes in the three-month LIBOR interest rate for the five-year period beginning December 31, 2014 and ending December 31, 2019. Any accumulated net after-tax gains related to effective cash flow hedges are included in accumulated other comprehensive (loss) income. Once the interest rate swap contract becomes effective on December 31, 2014, any ineffective portion of the interest rate swap will be reclassified from accumulated other comprehensive (loss) income to interest expense in the consolidated statements of income for the relevant periods.

Derivatives not Designated as Hedging Instruments

Trustmark utilizes a portfolio of exchange-traded derivative instruments, such as Treasury note futures contracts and option contracts, to achieve a fair value return that economically hedges changes in fair value of MSR attributable to interest rates. These transactions are considered freestanding derivatives that do not otherwise qualify for hedge accounting. These exchange-traded derivative instruments are accounted for at fair value with changes in the fair value recorded in noninterest income in mortgage banking, net and are offset by changes in the fair value of MSR. The MSR fair value represents the present value of future cash flows, which among other things includes decay and the effect of changes in interest rates. Ineffectiveness of hedging the MSR fair value is measured by comparing the change in value of hedge instruments to the change in the fair value of the MSR asset attributable to changes in interest rates and other market driven changes in valuation inputs and assumptions.

Trustmark also utilizes derivative instruments such as interest rate lock commitments in its mortgage banking area. Rate lock commitments are residential mortgage loan commitments with customers, which guarantee a specified interest rate for a specified time period. Changes in the fair value of these derivative instruments are recorded in noninterest income in mortgage banking, net and are offset by the changes in the fair value of forward sales contracts.

Trustmark offers certain derivatives products directly to qualified commercial lending clients seeking to manage their interest rate risk. Trustmark economically hedges interest rate swap transactions executed with commercial lending clients by entering into offsetting interest rate swap transactions with third parties. Derivative transactions executed as part of this program are not designated as qualifying hedging relationships and are, therefore, carried at fair value with the change in fair value recorded in noninterest income in bank card and other fees. Because these derivatives have mirror-image contractual terms, in addition to collateral provisions which mitigate the impact of non-performance risk, the changes in fair value are expected to substantially offset.

Certain financial instruments, including resell and repurchase agreements, securities lending arrangements and derivatives, may be eligible for offset in the consolidated balance sheet and/or subject to master netting arrangements or similar agreements. Trustmark’s interest rate swap derivative instruments are subject to master netting agreements, and therefore, eligible for offsetting in the consolidated balance sheet. Trustmark has elected to not offset any derivative instruments in its consolidated balance sheets.

Income Taxes

Trustmark accounts for uncertain tax positions in accordance with FASB ASC Topic 740, “Income Taxes,” which clarifies the accounting and disclosure for uncertainty in tax positions. Under the guidance of FASB ASC Topic 740, Trustmark accounts for deferred income taxes using the liability method. Deferred tax assets and liabilities are based on temporary differences between the financial statement carrying amounts and the tax basis of Trustmark’s assets and liabilities. Deferred tax assets and liabilities are measured using the enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be realized or settled and are presented net in the balance sheet in other assets.

Stock-Based Compensation

Trustmark accounts for the stock and incentive compensation under the provisions of FASB ASC Topic 718, “Compensation – Stock Compensation.” Under this accounting guidance, fair value is established as the measurement objective in accounting for stock awards and requires the application of a fair value based measurement method in accounting for compensation cost, which is recognized over the requisite service period.

Statements of Cash Flows

For purposes of reporting cash flows, cash and cash equivalents include cash on hand and amounts due from banks. The following table reflects specific transaction amounts for the periods presented ($ in thousands):

Years Ended December 31,

2013

2012

2011

Income taxes paid

14,520

57,834

37,604

Interest expense paid on deposits and borrowings

25,715

31,496

44,060

Noncash transfers from loans to foreclosed properties (1)

41,042

37,635

57,297

Assets acquired in business combination

1,845,543

234,960

207,243

Liabilities assumed in business combination

1,821,066

209,322

228,236

(1) Includes transfers from covered loans to foreclosed properties.

Per Share Data

Trustmark accounts for per share data in accordance with FASB ASC Topic 260, “Earnings Per Share,” which provides that unvested share-based payment awards that contain nonforfeitable rights to dividends or dividend equivalents (whether paid or unpaid) are participating securities and shall be included in the computation of earnings per share (EPS) pursuant to the two-class method. Trustmark has determined that its outstanding unvested stock awards and deferred stock units are not participating securities. Based on this determination, no change has been made to Trustmark’s current computation for basic and diluted EPS.

Basic EPS is computed by dividing net income by the weighted-average shares of common stock outstanding. Diluted EPS is computed by dividing net income by the weighted-average shares of common stock outstanding, adjusted for the effect of potentially dilutive stock awards outstanding during the period. The following table reflects weighted-average shares used to calculate basic and diluted EPS for the periods presented (in thousands):

Years Ended December 31,

2013

2012

2011

Basic shares

66,897

64,659

64,066

Dilutive shares

176

192

195

Diluted shares

67,073

64,851

64,261

Weighted-average antidilutive stock awards were excluded in determining diluted EPS. The following table reflects weighted-average antidilutive stock awards for the periods presented (in thousands):

Years Ended December 31,

2013

2012

2011

Weighted-average antidilutive stock awards

333

653

1,226

Fair Value Measurements

FASB ASC Topic 820, “Fair Value Measurements and Disclosures,” defines fair value, establishes a framework for measuring fair value in generally accepted accounting principles, and requires certain disclosures about fair value measurements. The fair value of an asset or liability is the price that would be received to sell that asset or paid to transfer that liability in an orderly transaction occurring in the principal market (or most advantageous market in the absence of a principal market) for such asset or liability. Depending on the nature of the asset or liability, Trustmark uses various valuation techniques and assumptions when estimating fair value. Inputs to valuation techniques include the assumptions that market participants would use in pricing an asset or liability. FASB ASC Topic 820 establishes a fair value hierarchy for valuation inputs that gives the highest priority to quoted prices in active markets for identical assets or liabilities and the lowest priority to unobservable inputs. The fair value hierarchy is as follows:

Level 1 Inputs – Valuation is based upon quoted prices (unadjusted) in active markets for identical assets or liabilities that Trustmark has the ability to access at the measurement date.

Level 2 Inputs – Valuation is based upon quoted prices in active markets for similar assets or liabilities, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability such as interest rates, yield curves, volatilities and default rates and inputs that are derived principally from or corroborated by observable market data.

Level 3 Inputs – Unobservable inputs reflecting the reporting entity’s own determination about the assumptions that market participants would use in pricing the asset or liability based on the best information available.

In instances where the determination of the fair value measurement is based on inputs from different levels of the fair value hierarchy, the level in the fair value hierarchy within which the fair value measurement in its entirety is classified is based on the lowest level input that is significant to the fair value measurement in its entirety. Trustmark’s assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and considers factors specific to the asset or liability.

Accounting Policies Recently Adopted and Pending Accounting Pronouncements

ASU 2014-04, “Receivables – Troubled Debt Restructurings by Creditors (Subtopic 310-40): Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans upon Foreclosure (a consensus of the FASB Emerging Issues Task Force).” Issued in January 2014, ASU 2014-04 clarifies when an “in substance repossession or foreclosure” occurs, that is, when a creditor should be considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loans, such that all or a portion of the loan should be derecognized and the real estate property recognized. ASU 2014-04 states that a creditor is considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan, upon either the creditor obtaining legal title to the residential real estate property upon completion of a foreclosure, or the borrower conveying all interest in the residential real estate property to the creditor to satisfy that loan through completion of a deed in lieu of foreclosure or through a similar legal agreement. The amendments of ASU 2014-04 also require interim and annual disclosure of both the amount of foreclosed residential real estate property held by the creditor and the recorded investment in consumer mortgage loans collateralized by residential real estate property that are in the process of foreclosure. The amendments of ASU 2014-04 are effective for interim and annual periods beginning after December 15, 2014, and may be applied using either a modified retrospective transition method or a prospective transition method as described in ASU 2014-04. For Trustmark, the adoption of ASU 2014-04 will be change in presentation only for the newly required disclosures and is not expect to have a significant impact to Trustmark’s consolidated financial statements.

ASU 2014-01, “Investments – Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Qualified Affordable Housing Projects (a consensus of the FASB Emerging Issues Task Force).” Issued in January 2014, ASU 2014-01 permits reporting entities that invest in qualified affordable housing projects to elect to account for those investments using the “proportional amortization method” if certain conditions are met. Under this method, an entity amortizes the initial cost of the investment in proportion to the tax credits and other tax benefits received and recognizes the net investment performance in the income statement as a component of income tax expense (benefit). The decision to apply the proportional amortization method of accounting is an accounting policy decision and should be applied consistently to all qualifying affordable housing project investments. ASU 2014-01 should be applied retrospectively to all periods presented and is effective for annual and interim reporting periods beginning after December 15, 2014. Trustmark currently accounts for its tax credit investments utilizing the equity method of accounting and does not have a significant amount of investments in qualified affordable housing projects that qualify for the low income housing tax credit. Management will review Trustmark’s investments in qualified affordable housing projects to determine if these investments meet the conditions required for using the proportional amortization method of accounting and make a decision regarding the accounting policy. The adoption of ASU 2014-01 is not expected to have a significant impact to Trustmark’s consolidated financial statements.

ASU 2013-11, “Income Taxes (Topic 740): Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists (a consensus of the FASB Emerging Issues Task Force).” Issued in July 2013, ASU 2013-11 provides that an entity’s unrecognized tax benefit, or a portion of its unrecognized tax benefit, should be presented in its financial statements as a reduction to a deferred tax asset for a net operating loss carryforward, a similar tax loss, or a tax credit carryforward, with one exception. The exception states that to the extent a net operating loss carryforward, a similar tax loss, or a tax credit carryforward is not available at the reporting date under the tax law of the applicable jurisdiction to settle any additional income taxes that would result from the disallowance of a tax position, or the tax law of the applicable jurisdiction does not require the entity to use, and the entity does not intend to use, the deferred tax asset for such purpose, the unrecognized tax benefit should be presented in the financial statements as a liability and should not be combined with deferred tax assets. ASU 2013-11 applies prospectively for all entities that have unrecognized tax benefits when a net operating loss carryforward, a similar tax loss, or tax credit carryforward exists at the reporting date. ASU 2013-11 is effective for fiscal years, and interim periods within those years beginning after December 15, 2013. The adoption of ASU 2013-11 is not expected to have a significant impact to Trustmark’s consolidated financial statements.

ASU 2013-02, “Comprehensive Income (Topic 220): Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income.” Issued in February 2013, ASU 2013-02 requires an entity to report the effect of significant reclassifications out of accumulated other comprehensive income on net income line items only for those items that are reported in their entirety in net income in the period of reclassification. For these items, entities are required to disclose the effect of the reclassification on each line item of net income that is affected by the reclassification adjustment. For items that are not reclassified in their entirety into net income, an entity is required to add a cross-reference to the note that includes additional information about the effect of the reclassification. For entities that only have reclassifications into net income in their entirety, this information may be presented either in the notes or parenthetically on the face of the statement that reports net income as long as the required information is reported in a single location. Entities that have one or more reclassification items that are not presented in their entirety in net income in the period of reclassification must present this information in the notes to the financial statements. ASU 2013-02 became effective for Trustmark’s financial statements on January 1, 2013, and the adoption did not have a significant impact to Trustmark’s consolidated financial statements. The required disclosures are reported in Note 18 – Shareholders’ Equity.

ASU 2013-01, “Balance Sheet (Topic 210): Clarifying the Scope of Disclosures about Offsetting Assets and Liabilities.” Issued in January 2013, ASU 2013-01 clarifies that the scope of ASU 2011-11, “Balance Sheet (Topic 210): Disclosures about Offsetting Assets and Liabilities,” applies to derivatives accounted for in accordance with FASB ASC Topic 815, including bifurcated embedded derivatives, repurchase agreements and reverse repurchase agreements, and securities borrowing and securities lending transactions that are either offset in accordance with Section 210-20-45 or Section 815-10-45 or subject to an enforceable master netting arrangement or similar agreements. ASU 2013-01 became effective for Trustmark’s financial statements on January 1, 2013, and the adoption did not have a significant impact to Trustmark’s consolidated financial statements. The required disclosures are reported in Note 20 – Derivatives.

ASU 2012-06, “Business Combinations (Topic 805): Subsequent Accounting for an Indemnification Asset Recognized at the Acquisition Date as a Result of a Government-Assisted Acquisition of a Financial Institution (a consensus of the FASB Emerging Issues Task Force).” Issued in October 2012, ASU 2012-06 addresses the diversity in practice about how to subsequently measure an indemnification asset recognized as a result of a government-assisted acquisition of a financial institution. The amendments in ASU 2012-06 require a reporting entity to subsequently account for a change in the measurement of the indemnification asset on the same basis as the change in the assets subject to indemnification. ASU 2012-06 further requires that any amortization of changes in value be limited to the lesser of the term of the indemnification agreement and the remaining life of the indemnified assets. The amendments in ASU 2012-06 are effective prospectively for fiscal years beginning on or after December 15, 2012, and, therefore, were effective for Trustmark’s consolidated financial statements as of January 1, 2013. As a result of the adoption of the amendments in ASU 2012-06 and improvements in the expected cash flows and lower loss expectations for active acquired covered loans during the year, other noninterest income for 2013 included $2.5 million of amortization of the FDIC indemnification asset. The required disclosures are reported in Note 11 –FDIC Indemnification Asset.

ASU 2012-02, “Intangibles – Goodwill and Other (Topic 350): Testing Indefinite-Lived Intangible Assets for Impairment.” Issued in July 2012, ASU 2012-02 amends the guidance in ASC 350-30 on testing indefinite-lived intangible assets other than goodwill for impairment. Under the revised guidance, entities testing indefinite-lived intangible assets for impairment have the option of performing a qualitative assessment before calculating the fair value of the reporting unit (i.e., step 1 of the indefinite-lived intangible assets impairment test). If entities determine, on the basis of qualitative factors, that the fair value of the reporting unit is more likely than not less than the carrying amount, the two-step impairment test would be required. The ASU does not change how indefinite-lived intangible assets are calculated or assigned to reporting units, nor does it revise the requirement to test indefinite-lived intangible assets annually for impairment. In addition, the ASU does not amend the requirement to test indefinite-lived intangible assets for impairment between annual tests if events or circumstances warrant; however, it does revise the examples of events and circumstances that an entity should consider. The amendments of ASU 2012-02 are effective for annual and interim impairment tests performed for fiscal years beginning after September 15, 2012. ASU 2012-02 became effect for Trustmark as of January 1, 2013. As Trustmark does not have any indefinite-lived intangible assets other than goodwill, the adoption of ASU 2012-02 had no impact on Trustmark’s consolidated financial statements.

Business_Combinations

Business Combinations	12 Months Ended
Business Combinations	Dec. 31, 2013
Business Combinations [Abstract]	'
Business Combinations	'
	Note 2 – Business Combinations

	Somerville Bank & Trust Company

	On October 3, 2013, Trustmark National Bank (TNB), a subsidiary of Trustmark, received approval from the Office of the Comptroller of the Currency (OCC) to merge Somerville Bank & Trust Company (Somerville), also a subsidiary of Trustmark, with and into TNB, with TNB as the surviving entity in the merger. Somerville, headquartered in Somerville, Tennessee, provides banking services in the eastern Memphis metropolitan statistical area (MSA) through five offices. TNB completed its merger with Somerville immediately following the close of business on December 31, 2013. At December 31, 2013, Somerville had total assets of $219.6 million. TNB and Somerville were both wholly owned subsidiaries of Trustmark; as such, the merger represented a business reorganization between affiliates under common control.

	Oxford, Mississippi Branches

	On July 26, 2013, TNB completed its acquisition of two branches of SOUTHBank, F.S.B. (SOUTHBank), located in Oxford, Mississippi. As a result of this acquisition, TNB assumed deposit accounts of approximately $11.7 million in addition to purchasing the two physical branch offices. The transaction was not material to Trustmark’s consolidated financial statements and was not considered a business combination in accordance with FASB ASC Topic 805.

	BancTrust Financial Group, Inc.

	On February 15, 2013, Trustmark completed its merger with BancTrust Financial Group, Inc. (BancTrust), a 26-year-old bank holding company headquartered in Mobile, Alabama. In accordance with the terms of the definitive agreement, the holders of BancTrust common stock received 0.125 of a share of Trustmark common stock for each share of BancTrust common stock in a tax-free exchange. Trustmark issued approximately 2.24 million shares of its common stock for all issued and outstanding shares of BancTrust common stock. The total value of the 2.24 million shares of Trustmark common stock issued to the BancTrust shareholders on the acquisition date was approximately $53.5 million, based on a closing stock price of $23.83 per share of Trustmark common stock on February 15, 2013. At closing, Trustmark repurchased the $50.0 million of BancTrust preferred stock and associated warrant issued to the U.S. Department of Treasury under the Capital Purchase Program for approximately $52.6 million.

	The acquisition of BancTrust was consistent with Trustmark’s strategic plan to selectively expand the Trustmark franchise. The acquisition provided Trustmark entry into more than 15 markets in Alabama and enhanced the Trustmark franchise in the Florida Panhandle.

	This acquisition was accounted for under the acquisition method in accordance with FASB ASC Topic 805. Accordingly, the assets and liabilities, both tangible and intangible, were recorded at their estimated fair values as of the acquisition date. The fair values of assets acquired and liabilities assumed are subject to adjustment if additional information becomes available to indicate a more accurate or appropriate value for an asset or liability during the measurement period, which is not to exceed one year from the acquisition date of February 15, 2013. Assets that are particularly susceptible to adjustment include certain loans, other real estate and certain premises and equipment.

	Since the end of the first quarter of 2013, Trustmark recorded fair value adjustments based on the estimated fair value of certain acquired loans, premises and equipment, net and other real estate. These measurement period adjustments resulted in a decrease in acquired noncovered loans of $6.8 million, a decrease in premises and equipment, net of $627 thousand, a decrease in other real estate of $2.6 million, an increase in the deferred tax asset of $3.4 million, and an increase in goodwill of $6.3 million. Trustmark also recorded an adjustment to transfer $1.6 million of acquired property from premises and equipment, net to other real estate. These measurement period adjustments have been presented on a retrospective basis, consistent with applicable accounting guidance. The purchase price allocation for the fair value of fixed assets and the valuation of the allowance on deferred tax assets was deemed preliminary as of December 31, 2013. During the first quarter of 2014, the purchase price allocation will be finalized and is not expected to have a significant impact to Trustmark’s consolidated financial statements. The statement of assets purchased and liabilities assumed in the BancTrust acquisition is presented below at their adjusted estimated fair values as of the acquisition date of February 15, 2013 ($ in thousands):

	Assets:
	Cash and due from banks		$	141,616
	Securities available for sale			528,016
	Loans held for sale			1,050
	Acquired noncovered loans			944,235
	Premises and equipment, net			54,952
	Identifiable intangible assets			33,498
	Other real estate			40,103
	Other assets			102,073
	Total Assets			1,845,543

	Liabilities:
	Deposits			1,740,254
	Other borrowings			64,051
	Other liabilities			16,761
	Total Liabilities			1,821,066

	Net identified assets acquired at fair value			24,477
	Goodwill			81,597
	Net assets acquired at fair value		$	106,074

	The excess of the consideration paid over the estimated fair value of the net assets acquired was $81.6 million, which was recorded as goodwill under FASB ASC Topic 805. The identifiable intangible assets acquired represent the core deposit intangible at fair value at the acquisition date. The core deposit intangible is being amortized on an accelerated basis over the estimated useful life, currently expected to be approximately 10 years.

	Loans, excluding LHFS, acquired from BancTrust were evaluated under a fair value process involving various degrees of deterioration in credit quality since origination, and also for those loans for which it was probable at acquisition that Trustmark would not be able to collect all contractually required payments. These loans, with the exception of revolving credit agreements and leases, are referred to as acquired impaired loans and are accounted for in accordance with FASB ASC Topic 310-30. Refer to Note 6 – Acquired Loans for further information on acquired loans.

	The operations of BancTrust are included in Trustmark’s operating results from February 15, 2013, and added revenue of $71.9 million and net income, excluding non-routine transaction expenses, of approximately $16.6 million through December 31, 2013. Included in BancTrust’s net income through December 31, 2013 are recoveries on pay-offs of acquired loans of $7.2 million (after tax). Included in noninterest expense during 2013 are non-routine BancTrust transaction expenses totaling approximately $9.4 million (change in control and severance expense of $1.4 million included in salaries and benefits; professional fees, contract termination and other expenses of $7.9 million included in other expense). Such operating results are not necessarily indicative of future operating results.

	The following table presents the unaudited pro forma financial information as if the acquisition of BancTrust had occurred on January 1, 2012. The unaudited pro forma information for the years ended December 31, 2013 and 2012 contains certain adjustments, including acquisition accounting fair value adjustments, amortization of the core deposit intangible and related income tax effects. The non-routine transaction expenses related to the BancTrust acquisition incurred during the first three months of 2013 as well as potential cost savings from the acquisition are not reflected in the unaudited pro forma amounts. The unaudited pro forma financial information is not necessarily indicative of the results of operations that would have occurred had the acquisition been effected on the assumed date ($ in thousands except per share data).

			Pro Forma
			Years Ended December 31,
			2013		2012

	Net Interest Income		$	396,003	$	410,443

	Total Noninterest Income			175,722		188,064

	Net Income			124,869		136,120

	Pro Forma Earnings Per Common Share
	Basic		$	1.81	$	2.03

	Diluted		$	1.8	$	2.03

Bay Bank & Trust Company

On March 16, 2012, Trustmark completed its merger with Bay Bank & Trust Co. (Bay Bank), a 76-year old financial institution headquartered in Panama City, Florida. Trustmark acquired all outstanding common stock of Bay Bank for approximately $22 million in cash and stock, comprised of $10 million in cash and the issuance of approximately 510 thousand shares of Trustmark common stock valued at $12 million. This acquisition was accounted for under the acquisition method in accordance with FASB ASC Topic 805. Accordingly, the assets and liabilities, both tangible and intangible, are recorded at their estimated fair values as of the acquisition date. The purchase price allocation was finalized in the second quarter of 2012.

The statement of assets purchased and liabilities assumed in the Bay Bank acquisition is presented below at their estimated fair values as of the acquisition date of March 16, 2012 ($ in thousands):

Assets:
Cash and due from banks		$	88,154
Securities available for sale			26,369
Acquired noncovered loans			97,914
Premises and equipment, net			9,466
Identifiable intangible assets			7,017
Other real estate			2,569
Other assets			3,471
Total Assets			234,960

Liabilities:
Deposits			208,796
Other liabilities			526
Total Liabilities			209,322

Net assets acquired at fair value			25,638
Consideration paid to Bay Bank			22,003

Bargain purchase gain			3,635
Income taxes			-
Bargain purchase gain, net of taxes		$	3,635

The bargain purchase gain represents the excess of the net of the estimated fair value of the assets acquired and liabilities assumed over the consideration paid to Bay Bank. Initially, Trustmark recognized a bargain purchase gain of $2.8 million during the first quarter of 2012 and subsequently increased the bargain purchase gain by $881 thousand during the second quarter of 2012 as the fair values associated with the Bay Bank acquisition were finalized. The gain of $3.6 million recognized by Trustmark was considered a gain from a bargain purchase under FASB ASC Topic 805 and was included in other noninterest income for 2012. Included in noninterest expense for 2012 are non-routine Bay Bank transaction expenses totaling approximately $2.6 million (change in control and severance expense of $672 thousand included in salaries and benefits; contract termination and other expenses of $1.9 million included in other expense).

The identifiable intangible assets represent the core deposit intangible at fair value at the acquisition date. The core deposit intangible is being amortized on an accelerated basis over the estimated useful life, currently expected to be approximately 10 years.

Loans acquired from Bay Bank were evaluated under a fair value process involving various degrees of deterioration in credit quality since origination, and also for those loans for which it was probable at acquisition that Trustmark would not be able to collect all contractually required payments. These loans, with the exception of revolving credit agreements, are referred to as acquired impaired loans and are accounted for in accordance with FASB ASC Topic 310-30. Refer to Note 6 – Acquired Loans for further information on acquired loans.

Heritage Banking Group

On April 15, 2011, the Mississippi Department of Banking and Consumer Finance closed the Heritage Banking Group (Heritage), a 90-year old financial institution headquartered in Carthage, Mississippi, and appointed the FDIC as receiver. On the same date, TNB entered into a purchase and assumption agreement with the FDIC in which TNB agreed to assume all of the deposits and purchased essentially all of the assets of Heritage. The FDIC and TNB entered into a loss-share transaction on approximately $151.9 million of Heritage assets, which covers substantially all loans and all other real estate. Under the loss-share agreement, the FDIC will cover 80% of covered loan and other real estate losses incurred. Because of the loss protection provided by the FDIC, the risk characteristics of the Heritage loans and other real estate covered by the loss-share agreement are significantly different from those assets not covered by this agreement. As a result, Trustmark will refer to loans and other real estate subject to the loss-share agreement as “covered” while loans and other real estate that are not subject to the loss-share agreement will be referred to as “noncovered” or “excluding covered.” The loss-share agreement applicable to single family residential mortgage loans and related foreclosed real estate provides for FDIC loss sharing and TNB’s reimbursement to the FDIC for recoveries of covered losses for ten years from the date on which the loss-share agreement was entered. The loss-share agreement applicable to commercial loans and related foreclosed real estate provides for FDIC loss sharing for five years from the date on which the loss-share agreement was entered and TNB’s reimbursement to the FDIC for recoveries of covered losses for an additional three years thereafter.

Pursuant to the provisions of the Heritage loss-share agreement, TNB may be required to make a true-up payment to the FDIC at the termination of the loss-share agreement should actual losses be less than certain thresholds established in the agreement. To the extent that actual losses on covered loans and covered other real estate are less than estimated losses, the applicable true-up payable to the FDIC upon termination of the loss-share agreement will increase. To the extent that actual losses on covered loans and covered other real estate are more than estimated losses, the applicable true-up payable to the FDIC upon termination of the loss-share agreement will decrease. TNB calculates the projected true-up payable to the FDIC quarterly and records a FDIC true-up provision for the present value of the projected true-up payable to the FDIC at the termination of the loss-share agreement. The FDIC indemnification asset is presented net of the FDIC true-up provision. Changes in the FDIC true-up provision are recorded to noninterest income.

The assets purchased and liabilities assumed for the Heritage acquisition have been accounted for under the acquisition method in accordance with FASB ASC Topic 805. The assets and liabilities, both tangible and intangible, are recorded at their estimated fair values as of the acquisition date.

The statement of assets purchased and liabilities assumed in the Heritage acquisition are presented below at their estimated fair values as of the acquisition date of April 15, 2011 ($ in thousands):

Assets:
Cash and due from banks		$	50,447
Federal funds sold			1,000
Securities available for sale			6,389
Acquired noncovered loans			9,644
Acquired covered loans			97,770
Premises and equipment, net			55
Identifiable intangible assets			902
Covered other real estate			7,485
FDIC indemnification asset			33,333
Other assets			218
Total Assets			207,243

Liabilities:
Deposits			204,349
Short-term borrowings			23,157
Other liabilities			730
Total Liabilities			228,236

Net assets acquired at fair value			(20,993	)
Cash received on acquisition			28,449

Bargain purchase gain			7,456
Income taxes			2,852
Bargain purchase gain, net of taxes		$	4,604

The bargain purchase gain represents the net of the estimated fair value of the assets acquired and liabilities assumed and is influenced significantly by the FDIC-assisted transaction process. Under the FDIC-assisted transaction process, only certain assets and liabilities are transferred to the acquirer and, depending on the nature and amount of the acquirer's bid, the FDIC may be required to make a cash payment to the acquirer. The pretax gain of $7.5 million recognized by Trustmark is considered a bargain purchase transaction under FASB ASC Topic 805. The gain was recognized as other noninterest income in Trustmark’s consolidated statements of income for the year ended December 31, 2011.

Fair Value of Acquired Financial Instruments

For financial instruments measured at fair value, Trustmark utilized Level 2 inputs to determine the fair value of securities available for sale, time deposits (included in deposits above) and FHLB advances (shown as short-term borrowings above). Level 3 inputs were used to determine the fair value of acquired loans, identifiable intangible assets, other real estate, including covered other real estate and the FDIC indemnification asset. The methodology and significant assumptions used in estimating the fair values of these financial assets and liabilities are as follows:

Securities Available for Sale

Estimated fair values for securities available for sale are based on quoted market prices where available. If quoted market prices are not available, estimated fair values are based on quoted market prices of comparable instruments.

Acquired Loans

Fair value of acquired loans is determined using a discounted cash flow model based on assumptions regarding the amount and timing of principal and interest payments, estimated prepayments, estimated default rates, estimated loss severity in the event of defaults and current market rates.

Identifiable Intangible Assets

The fair value assigned to the identifiable intangible assets, in this case core deposit intangibles, represent the future economic benefit of the potential cost savings from acquiring core deposits in the acquisition compared to the cost of obtaining alternative funding from market sources.

Other Real Estate, Including Covered Other Real Estate

Other real estate, including covered other real estate, was initially recorded at its estimated fair value on the acquisition date based on independent appraisals less estimated selling costs.

FDIC Indemnification Asset

The FDIC indemnification asset was initially recorded at fair value, based on the discounted value of expected future cash flows under the loss-share agreement.

Time Deposits

Time deposits were valued by projecting expected cash flows into the future based on each account’s contracted rate and then determining the present value of those expected cash flows using current rates for deposits with similar maturities.

FHLB Advances

FHLB advances were valued by projecting expected cash flows into the future based on each advance’s contracted rate and then determining the present value of those expected cash flows using current rates for advances with similar maturities.

Please refer to Note 19 – Fair Value for more information on Trustmark’s classification of financial instruments based on valuation inputs within the fair value hierarchy.

Cash_and_Due_from_Banks

Cash and Due from Banks	12 Months Ended
Cash and Due from Banks	Dec. 31, 2013
Cash and Due from Banks [Abstract]	'
Cash and Due from Banks	'
	Note 3 – Cash and Due from Banks

	Trustmark is required to maintain average reserve balances with the FRB based on a percentage of deposits. The average amounts of those reserves for the years ended December 31, 2013 and 2012 were $57.6 million and $47.7 million, respectively.

Securities_Available_for_Sale_

Securities Available for Sale and Held to Maturity	12 Months Ended
Securities Available for Sale and Held to Maturity	Dec. 31, 2013
Securities Available for Sale and Held to Maturity [Abstract]	'
Securities Available for Sale and Held to Maturity	'
	Note 4 – Securities Available for Sale and Held to Maturity

	The following table is a summary of the amortized cost and estimated fair value of securities available for sale and held to maturity at December 31, 2013 and 2012 ($ in thousands):

			Securities Available for Sale															Securities Held to Maturity
						Gross				Gross				Estimated							Gross			Gross			Estimated
			Amortized			Unrealized				Unrealized				Fair				Amortized			Unrealized			Unrealized			Fair
	31-Dec-13		Cost			Gains				(Losses)				Value				Cost			Gains			(Losses)			Value
	U.S. Treasury securities		$	501		$	1			$	-			$	502			$	-		$	-		$	-		$	-
	U.S. Government agency obligations
	Issued by U.S. Government agencies			129,653			1,125				(1,485	)			129,293				-			-			-			-
	Issued by U.S. Government sponsored agencies			40,681			19				(521	)			40,179				100,159			-			(1,580	)		98,579
	Obligations of states and political subdivisions			165,810			6,243				(315	)			171,738				65,987			2,806			(281	)		68,512
	Mortgage-backed securities
	Residential mortgage pass-through securities
	Guaranteed by GNMA			14,099			459				(84	)			14,474				9,433			142			(72	)		9,503
	Issued by FNMA and FHLMC			239,880			3,147				(1,909	)			241,118				12,724			30			(162	)		12,592
	Other residential mortgage-backed securities
	Issued or guaranteed by FNMA, FHLMC or GNMA			1,300,375			12,459				(22,093	)			1,290,741				837,393			-			(15,072	)		822,321
	Commercial mortgage-backed securities
	Issued or guaranteed by FNMA, FHLMC or GNMA			235,317			7,278				(423	)			242,172				143,032			85			(3,791	)		139,326
	Asset-backed securities and structured financial products			62,689			1,248				-				63,937				-			-			-			-
	Total		$	2,189,005		$	31,979			$	(26,830	)		$	2,194,154			$	1,168,728		$	3,063		$	(20,958	)	$	1,150,833

	31-Dec-12
	U.S. Government agency obligations
	Issued by U.S. Government agencies		$	10		$	-			$	-			$	10			$	-		$	-		$	-		$	-
	Issued by U.S. Government sponsored agencies			105,396			339				-				105,735				-			-			-			-
	Obligations of states and political subdivisions			202,877			12,900				(16	)			215,761				36,206			4,184			-			40,390
	Mortgage-backed securities
	Residential mortgage pass-through securities
	Guaranteed by GNMA			18,981			921				-				19,902				3,245			227			-			3,472
	Issued by FNMA and FHLMC			201,493			7,071				-				208,564				572			52			-			624
	Other residential mortgage-backed securities
	Issued or guaranteed by FNMA, FHLMC or GNMA			1,436,812			29,574				(20	)			1,466,366				-			-			-
	Commercial mortgage-backed securities
	Issued or guaranteed by FNMA, FHLMC or GNMA			380,514			19,420				(154	)			399,780				2,165			237			-			2,402
	Asset-backed securities and structured financial products			238,893			2,755				(21	)			241,627				-			-			-			-
	Total		$	2,584,976		$	72,980			$	(211	)		$	2,657,745			$	42,188		$	4,700		$	-		$	46,888

	During the fourth quarter of 2013, Trustmark reclassified approximately $1.099 billion of securities available for sale to securities held to maturity. The securities were transferred at fair value, which became the cost basis for the securities held to maturity. At the date of transfer, the net unrealized holding loss on the available for sale securities totaled approximately $46.6 million ($28.8 million, net of tax). The net unrealized holding loss is amortized over the remaining life of the securities as a yield adjustment in a manner consistent with the amortization or accretion of the original purchase premium or discount on the associated security. There were no gains or losses recognized as a result of the transfer. At December 31, 2013, the net unamortized, unrealized loss on the transferred securities included in accumulated other comprehensive (loss) income in the accompanying balance sheet totaled approximately $46.4 million ($28.6 million, net of tax).

	During the fourth quarter of 2013, Trustmark sold $135.6 million of Collateralized Loan Obligations (CLO) generating a net gain of $1.3 million. These securities were identified as available for sale and had been carried in the asset-backed securities and structured financial products line item in the table shown above. This sale left Trustmark with a CLO balance of $25.8 million at December 31, 2013, which was subsequently sold in its entirety for a gain of $389 thousand in January 2014.

	Temporarily Impaired Securities

	The table below includes securities with gross unrealized losses segregated by length of impairment ($ in thousands):

			Less than 12 Months							12 Months or More								Total
						Gross								Gross							Gross
			Estimated			Unrealized				Estimated				Unrealized				Estimated			Unrealized
	31-Dec-13		Fair Value			(Losses)				Fair Value				(Losses)				Fair Value			(Losses)
	U.S. Government agency obligations
	Issued by U.S. Government agencies		$	68,908		$	(1,485	)		$	-			$	-			$	68,908		$	(1,485	)
	Issued by U.S. Government sponsored agencies			138,478			(2,101	)			-				-				138,478			(2,101	)
	Obligations of states and political subdivisions			55,963			(586	)			796				(10	)			56,759			(596	)
	Mortgage-backed securities
	Residential mortgage pass-through securities
	Guaranteed by GNMA			14,732			(155	)			161				(1	)			14,893			(156	)
	Issued by FNMA and FHLMC			118,466			(2,071	)			-				-				118,466			(2,071	)
	Other residential mortgage-backed securities
	Issued or guaranteed by FNMA, FHLMC or GNMA			1,534,381			(36,750	)			23,458				(415	)			1,557,839			(37,165	)
	Commercial mortgage-backed securities
Issued or guaranteed by FNMA, FHLMC or GNMA			177,412			(4,214	)			-				-				177,412			(4,214	)
Total		$	2,108,340		$	(47,362	)		$	24,415			$	(426	)		$	2,132,755		$	(47,788	)

31-Dec-12
Obligations of states and political subdivisions		$	5,878		$	(16	)		$	-			$	-			$	5,878		$	(16	)
Mortgage-backed securities
Other residential mortgage-backed securities
Issued or guaranteed by FNMA, FHLMC or GNMA			3,055			(20	)			-				-				3,055			(20	)
Commercial mortgage-backed securities
Issued or guaranteed by FNMA, FHLMC or GNMA			-			-				16,339				(154	)			16,339			(154	)
Asset-backed securities and structured financial products			16,412			(21	)			-				-				16,412			(21	)
Total		$	25,345		$	(57	)		$	16,339			$	(154	)		$	41,684		$	(211	)

The unrealized losses shown above are primarily due to increases in market rates over the yields available at the time of purchase of the underlying securities and not credit quality. Because Trustmark does not intend to sell these securities and it is more likely than not that Trustmark will not be required to sell the investments before recovery of their amortized cost bases, which may be maturity, Trustmark does not consider these investments to be other-than-temporarily impaired at December 31, 2013. There were no other-than-temporary impairments for the years ended December 31, 2013, 2012 and 2011.

Security Gains and Losses

Gains and losses as a result of calls and dispositions of securities, as well as any associated proceeds, were as follows ($ in thousands):
		Years Ended December 31,
Available for Sale		2013			2012				2011
Proceeds from calls and sales of securities		$	224,853		$	38,364			$	24,471
Gross realized gains			1,680			1,052				57
Gross realized (losses)			(1,195	)		(2	)			(11	)

Held to Maturity
Proceeds from calls of securities		$	-		$	335			$	3,645
Gross realized gains			-			9				34

Securities Pledged

Securities with a carrying value of $2.475 billion and $1.813 billion at December 31, 2013 and 2012, respectively, were pledged to collateralize public deposits and securities sold under repurchase agreements and for other purposes as permitted by law. Of the amount pledged at December 31, 2013, $15.8 million was pledged to the Federal Reserve Discount Window to provide additional contingency funding capacity. At year-end, these securities were not required to collateralize any borrowings from the FRB.

Contractual Maturities

The amortized cost and estimated fair value of securities available for sale and held to maturity at December 31, 2013, by contractual maturity, are shown below ($ in thousands). Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.

		Securities							Securities
		Available for Sale							Held to Maturity
					Estimated								Estimated
		Amortized			Fair				Amortized				Fair
		Cost			Value				Cost				Value
Due in one year or less		$	8,958		$	9,020			$	1,936			$	1,968
Due after one year through five years			152,654			156,970				12,949				13,943
Due after five years through ten years			104,057			106,288				134,997				135,186
Due after ten years			133,665			133,371				16,264				15,994
			399,334			405,649				166,146				167,091
Mortgage-backed securities			1,789,671			1,788,505				1,002,582				983,742
Total		$	2,189,005		$	2,194,154			$	1,168,728			$	1,150,833

Loans_Held_for_Investment_LHFI

Loans Held for Investment (LHFI) and Allowance for Loan Losses, LHFI	12 Months Ended
	Dec. 31, 2013
Loans Held for Investment (LHFI) and Allowance for Loan Losses, LHFI [Abstract]	'
Loans Held for Investment (LHFI) and Allowance for Loan Losses, LHFI	'
	Note 5 –Loans Held for Investment (LHFI) and Allowance for Loan Losses, LHFI

	At December 31, 2013 and 2012, LHFI consisted of the following ($ in thousands):

			2013			2012
	Loans secured by real estate:
	Construction, land development and other land loans		$	596,889		$	468,975
	Secured by 1-4 family residential properties			1,485,564			1,497,480
	Secured by nonfarm, nonresidential properties			1,415,139			1,410,264
	Other			189,362			189,949
	Commercial and industrial loans			1,157,614			1,169,513
	Consumer loans			165,308			171,660
	Other loans			789,005			684,913
	LHFI			5,798,881			5,592,754
	Less allowance for loan losses, LHFI			66,448			78,738
	Net LHFI		$	5,732,433		$	5,514,016

	Loan Concentrations

	Trustmark does not have any loan concentrations other than those reflected in the preceding table, which exceed 10% of total LHFI. At December 31, 2013, Trustmark's geographic loan distribution was concentrated primarily in its five key market regions, Alabama, Florida, Mississippi, Tennessee, and Texas. Accordingly, the ultimate collectability of a substantial portion of these loans and the recovery of a substantial portion of the carrying amount of other real estate are susceptible to changes in market conditions in these areas.

	Related Party Loans

	Trustmark makes loans in the normal course of business to certain executive officers and directors, including their immediate families and companies in which they are principal owners. Such loans are made on substantially the same terms, including interest rates and collateral, as those prevailing at the time for comparable transactions with unrelated persons and do not involve more than the normal risk of collectability at the time of the transaction. At December 31, 2013 and 2012, total loans to these borrowers were $89.0 million and $91.7 million, respectively. During 2013, $629.8 million of new loan advances were made, while repayments were $626.3 million, as well as decreases in loans due to changes in executive officers and directors of $6.2 million.

	Nonaccrual/Impaired LHFI

	At December 31, 2013 and 2012, the carrying amounts of nonaccrual LHFI, which are individually evaluated for impairment, were $65.2 million and $82.4 million, respectively. Of this total, all commercial nonaccrual LHFI over $500 thousand were specifically evaluated for impairment (specifically evaluated impaired LHFI) using a fair value approach. The remaining nonaccrual LHFI were not all specifically reviewed and not written down to fair value less cost to sell. No material interest income was recognized in the income statement on impaired or nonaccrual LHFI for each of the years in the three-year period ended December 31, 2013.

	All of Trustmark’s specifically evaluated impaired LHFI are collateral dependent loans. At December 31, 2013 and 2012, specifically evaluated impaired LHFI totaled $31.6 million and $40.6 million, respectively. In addition, these specifically evaluated impaired LHFI had a related allowance of $2.2 million and $5.9 million at the end of the respective periods. For collateral dependent loans, when a loan is deemed impaired, the full difference between the carrying amount of the loan and the most likely estimate of the asset’s fair value less cost to sell is charged off. Charge-offs related to specifically evaluated impaired LHFI totaled $2.5 million and $13.1 million for 2013 and 2012, respectively. Provision recapture on specifically evaluated impaired LHFI totaled $2.9 million for 2013, compared to provision expense of $1.1 million for 2012. For 2011, charge-offs related to specifically evaluated impaired LHFI totaled $21.5 million while the provision expense charged to net income during the year for these loans totaled $7.5 million.

	Fair value estimates for specifically evaluated impaired LHFI are derived from appraised values based on the current market value or as is value of the property, normally from recently received and reviewed appraisals. Current appraisals are ordered on an annual basis based on the inspection date. Appraisals are obtained from state-certified appraisers and are based on certain assumptions, which may include construction or development status and the highest and best use of the property. These appraisals are reviewed by Trustmark’s Appraisal Review Department to ensure they are acceptable, and values are adjusted down for costs associated with asset disposal. Once this estimated net realizable value has been determined, the value used in the impairment assessment is updated. At the time a specifically evaluated impaired LHFI is deemed to be impaired, the full difference between book value and the most likely estimate of the asset’s net realizable value is charged off. As subsequent events dictate and estimated net realizable values decline, required reserves may be established or further adjustments recorded.

	At December 31, 2013 and 2012, nonaccrual LHFI not specifically reviewed for impairment and not written down to fair value less cost to sell, totaled $33.7 million and $41.8 million, respectively. In addition, these nonaccrual LHFI had allocated allowance for loan losses of $3.0 million and $4.6 million at the end of the respective periods.

	The following table details LHFI individually and collectively evaluated for impairment at December 31, 2013 and 2012 ($ in thousands):

			31-Dec-13
			LHFI Evaluated for Impairment
			Individually			Collectively			Total

	Loans secured by real estate:
	Construction, land development and other land loans		$	13,327		$	583,562		$	596,889
	Secured by 1-4 family residential properties			21,603			1,463,961			1,485,564
	Secured by nonfarm, nonresidential properties			21,809			1,393,330			1,415,139
	Other			1,327			188,035			189,362
	Commercial and industrial loans			6,286			1,151,328			1,157,614
	Consumer loans			151			165,157			165,308
	Other loans			735			788,270			789,005
	Total		$	65,238		$	5,733,643		$	5,798,881

			31-Dec-12
			LHFI Evaluated for Impairment
			Individually			Collectively			Total

	Loans secured by real estate:
	Construction, land development and other land loans		$	27,105		$	441,870		$	468,975
	Secured by 1-4 family residential properties			27,114			1,470,366			1,497,480
	Secured by nonfarm, nonresidential properties			18,289			1,391,975			1,410,264
	Other			3,956			185,993			189,949
	Commercial and industrial loans			4,741			1,164,772			1,169,513
	Consumer loans			360			171,300			171,660
	Other loans			798			684,115			684,913
Total		$	82,363		$	5,510,391		$	5,592,754

At December 31, 2013 and 2012, the carrying amount of LHFI individually evaluated for impairment consisted of the following ($ in thousands):

		31-Dec-13
		LHFI
		Unpaid			With No Related			With an			Total					Average
		Principal			Allowance			Allowance			Carrying			Related		Recorded
		Balance			Recorded			Recorded			Amount			Allowance		Investment
Loans secured by real estate:
Construction, land development and other land loans		$	24,350		$	9,817		$	3,510		$	13,327		$	989	$	20,216
Secured by 1-4 family residential properties			26,541			3,095			18,508			21,603			191		24,359
Secured by nonfarm, nonresidential properties			24,879			10,225			11,584			21,809			2,307		20,049
Other			1,375			-			1,327			1,327			122		2,641
Commercial and industrial loans			8,702			2,506			3,780			6,286			1,253		5,513
Consumer loans			286			-			151			151			2		255
Other loans			849			-			735			735			317		767
Total		$	86,982		$	25,643		$	39,595		$	65,238		$	5,181	$	73,800

		31-Dec-12
		LHFI
		Unpaid			With No Related			With an			Total					Average
		Principal			Allowance			Allowance			Carrying			Related		Recorded
		Balance			Recorded			Recorded			Amount			Allowance		Investment
Loans secured by real estate:
Construction, land development and other land loans		$	46,558		$	9,571		$	17,534		$	27,105		$	4,992	$	33,759
Secured by 1-4 family residential properties			35,155			2,533			24,581			27,114			1,469		25,731
Secured by nonfarm, nonresidential properties			23,337			8,184			10,105			18,289			2,296		21,135
Other			6,036			566			3,390			3,956			760		4,914
Commercial and industrial loans			7,251			2,336			2,405			4,741			640		9,444
Consumer loans			624			-			360			360			5		592
Other loans			857			-			798			798			342		835
Total		$	119,818		$	23,190		$	59,173		$	82,363		$	10,504	$	96,410

A troubled debt restructuring (TDR) occurs when a borrower is experiencing financial difficulties, and for related economic or legal reasons, a concession is granted to the borrower that Trustmark would not otherwise consider. Whatever the form of concession that might be granted by Trustmark, Management’s objective is to enhance collectibility if the full repayment according to the terms of the loan is deemed to be unlikely, for example by obtaining more cash or other value from the borrower or by increasing the probability of receipt by granting the concession than by not granting it. Other concessions may arise from court proceedings or may be imposed by law. In addition, TDRs also include those credits that are extended or renewed to a borrower who is not able to obtain funds from sources other than Trustmark at a market interest rate for new debt with similar risk.

A formal TDR may include, but is not necessarily limited to, one or a combination of the following situations:

	·	Trustmark accepts a third-party receivable or other asset(s) of the borrower, in lieu of the receivable from the borrower.
	·	Trustmark accepts an equity interest in the borrower in lieu of the receivable.
	·	Trustmark accepts modification of the terms of the debt including but not limited to:
	o	Reduction of (absolute or contingent) the stated interest rate to below the current market rate.
	o	Extension of the maturity date or dates at a stated interest rate lower than the current market rate for new debt with similar risk.
	o	Reduction (absolute or contingent) of the face amount or maturity amount of the debt as stated in the note or other agreement.
	o	Reduction (absolute or contingent) of accrued interest.

Troubled debt restructurings are addressed in Trustmark’s loan policy, and in accordance with that policy, any modifications or concessions that may result in a TDR are subject to a special approval process which allows for control, identification, and monitoring of these arrangements. Prior to granting a concession, a revised borrowing arrangement is proposed which is structured so as to improve collectability of the loan in accordance with a reasonable repayment schedule with any loss promptly identified. It is supported by a thorough evaluation of the borrower’s financial condition and prospects for repayment under those revised terms. Other TDRs arising from renewals or extensions of existing debt are routinely identified through the processes utilized in the Problem Loan Committees and in the Credit Quality Review Committee. All TDRs are subsequently reported to the Director Credit Policy Committee on a quarterly basis and are disclosed in Trustmark’s consolidated financial statements in accordance with GAAP and regulatory reporting guidance.

All loans whose terms have been modified in a troubled debt restructuring are evaluated for impairment under FASB ASC Topic 310. Accordingly, Trustmark measures any loss on the restructuring in accordance with that guidance. A TDR in which Trustmark receives physical possession of the borrower’s assets, regardless of whether formal foreclosure or repossession proceedings take place, is accounted for in accordance with FASB ASC Subtopic 310-40, “Troubled Debt Restructurings by Creditors.” Thus, the loan is treated as if assets have been received in satisfaction of the loan and reported as a foreclosed asset.

A TDR may be returned to accrual status if Trustmark is reasonably assured of repayment of principal and interest under the modified terms and the borrower has demonstrated sustained performance under those terms for a period of at least six months. Otherwise, the restructured loan must remain on nonaccrual.

At December 31, 2013, 2012 and 2011, LHFI classified as TDRs totaled $14.8 million, $24.3 million and $34.2 million, respectively, and were primarily comprised of credits with interest-only payments for an extended period of time totaling $11.1 million, $21.6 million and $34.2 million, respectively. The remaining TDRs at December 31, 2013, 2012 and 2011 resulted from real estate loans discharged through Chapter 7 bankruptcy that were not reaffirmed or from payment or maturity extensions.

For TDRs, Trustmark had a related loan loss allowance of $1.6 million at December 31, 2013, $4.3 million at December 31, 2012, and $4.5 million at December 31, 2011. LHFI classified as TDRs are charged down to the most likely fair value estimate less an estimated cost to sell for collateral dependent loans, which would approximate net realizable value. Specific charge-offs related to TDRs totaled $816 thousand, $6.0 million and $1.9 million for the years ended December 31, 2013, 2012 and 2011, respectively.

The following table illustrates the impact of modifications classified as TDRs as well as those TDRs modified within the last 12 months for which there was a payment default during the period for the years ended December 31, 2013, 2012 and 2011 ($ in thousands):
		Year Ended December 31, 2013
Troubled Debt Restructurings					Pre-Modification			Post-Modification
					Outstanding			Outstanding
		Number of			Recorded			Recorded
		Contracts			Investment			Investment
Secured by 1-4 family residential properties			10		$	498		$	441
Secured by nonfarm, nonresidential properties			1			952			952
Commercial and industrial			2			944			937
Other loans			1			2,490			2,490
Total			14		$	4,884		$	4,820

		Year Ended December 31, 2012
Troubled Debt Restructurings					Pre-Modification			Post-Modification
					Outstanding			Outstanding
		Number of			Recorded			Recorded
		Contracts			Investment			Investment
Construction, land development and other land loans			12		$	4,092		$	4,092
Secured by 1-4 family residential properties			48			5,399			5,383
Secured by nonfarm, nonresidential properties			2			1,210			1,210
Other loans secured by real estate			1			199			199
Commercial and industrial			1			148			-
Total			64		$	11,048		$	10,884

		Year Ended December 31, 2011
Troubled Debt Restructurings					Pre-Modification			Post-Modification
					Outstanding			Outstanding
		Number of			Recorded			Recorded
		Contracts			Investment			Investment
Construction, land development and other land loans			26		$	16,200		$	13,984
Secured by 1-4 family residential properties			17			3,843			3,793
Commercial and industrial			2			11,997			11,503
Total			45		$	32,040		$	29,280

		Years Ended December 31,
		2013						2012						2011
Troubled Debt Restructurings that Subsequently Defaulted		Number of Contracts			Recorded Investment			Number of Contracts			Recorded Investment			Number of Contracts		Recorded Investment
Construction, land development and other land loans			-		$	-			7		$	1,881			5	$	3,058
Secured by 1-4 family residential properties			5			345			16			1,469			1		179
Secured by nonfarm, nonresidential properties			-			-			1			862			-		-
Total			5		$	345			24		$	4,212			6	$	3,237

Trustmark’s TDRs have resulted primarily from allowing the borrower to pay interest-only for an extended period of time rather than from forgiveness. Accordingly, as shown above, these TDRs have a similar recorded investment for both the pre-modification and post-modification disclosure. Trustmark has utilized loans 90 days or more past due to define payment default in determining TDRs that have subsequently defaulted.

At December 31, 2013, 2012 and 2011, the following table details LHFI classified as TDRs by loan type ($ in thousands):

		31-Dec-13
		Accruing			Nonaccrual			Total
Construction, land development and other land loans		$	-		$	6,247		$	6,247
Secured by 1-4 family residential properties			1,320			4,201			5,521
Secured by nonfarm, nonresidential properties			-			2,292			2,292
Other loans secured by real estate			-			167			167
Commercial and industrial			-			549			549
Total Troubled Debt Restructurings by Type		$	1,320		$	13,456		$	14,776

		31-Dec-12
		Accruing			Nonaccrual			Total
Construction, land development and other land loans		$	233		$	12,073		$	12,306
Secured by 1-4 family residential properties			1,280			5,908			7,188
Secured by nonfarm, nonresidential properties			-			4,582			4,582
Other loans secured by real estate			-			197			197
Total Troubled Debt Restructurings by Type		$	1,513		$	22,760		$	24,273

		31-Dec-11
		Accruing			Nonaccrual			Total
Construction, land development and other land loans		$	241		$	14,041		$	14,282
Secured by 1-4 family residential properties			782			3,485			4,267
Secured by nonfarm, nonresidential properties			-			4,135			4,135
Commercial and industrial			-			11,503			11,503
Total Troubled Debt Restructurings by Type		$	1,023		$	33,164		$	34,187

Credit Quality Indicators

Trustmark’s loan portfolio credit quality indicators focus on six key quality ratios that are compared against bank tolerances. The loan indicators are total classified outstanding, total criticized outstanding, nonperforming loans, nonperforming assets, delinquencies and net loan losses. Due to the homogenous nature of consumer loans, Trustmark does not assign a formal internal risk rating to each credit and therefore the criticized and classified measures are unique to commercial loans.

In addition to monitoring portfolio credit quality indicators, Trustmark also measures how effectively the lending process is being managed and risks are being identified. As part of an ongoing monitoring process, Trustmark grades the commercial portfolio as it relates to credit file completion and financial statement exceptions, total policy exceptions, collateral exceptions and violations of law as shown below:

	·	Credit File Completeness and Financial Statement Exceptions – evaluates the quality and condition of credit files in terms of content, completeness and organization and focuses on efforts to obtain and document sufficient information to determine the quality and status of credits. Also included is an evaluation of the systems/procedures used to insure compliance with policy such as financial statements, review memos and loan agreements.
	·	Underwriting/Policy – evaluates whether credits are adequately analyzed, appropriately structured and properly approved within requirements of bank loan policy. A properly approved credit is approved by adequate authority in a timely manner with all conditions of approval fulfilled. Total policy exceptions measures the level of underwriting and other policy exceptions within a loan portfolio.
	·	Collateral Documentation – focuses on the adequacy of documentation to support the obligation, perfect Trustmark’s collateral position and protect collateral value. There are two parts to this measure:
	ü	Collateral exceptions are where certain collateral documentation is either not present, is not considered current or has expired.
	ü	90 days and over collateral exceptions are where certain collateral documentation is either not present, is not considered current or has expired and the exception has been identified in excess of 90 days.
	·	Compliance with Law – focuses on underwriting, documentation, approval and reporting in compliance with banking laws and regulations. Primary emphasis is directed to Financial Institutions Reform, Recovery and Enforcement Act of 1989 (FIRREA) and Regulation O requirements.

Commercial Credits

Trustmark has established a loan grading system that consists of ten individual credit risk grades (risk ratings) that encompass a range from loans where the expectation of loss is negligible to loans where loss has been established. The model is based on the risk of default for an individual credit and establishes certain criteria to delineate the level of risk across the ten unique credit risk grades. Credit risk grade definitions are as follows:

	·	Risk Rate (RR) 1 through RR 6 – Grades one through six represent groups of loans that are not subject to adverse criticism as defined in regulatory guidance. Loans in these groups exhibit characteristics that represent low to moderate risk measured by using a variety of credit risk criteria such as cash flow coverage, debt service coverage, balance sheet leverage, liquidity, management experience, industry position, prevailing economic conditions, support from secondary sources of repayment and other credit factors that may be relevant to a specific loan. In general, these loans are supported by properly margined collateral and guarantees of principal parties.
	·	Other Assets Especially Mentioned (OAEM) - (RR 7) – a loan that has a potential weakness that if not corrected will lead to a more severe rating. This rating is for credits that are currently protected but potentially weak because of an adverse feature or condition that if not corrected will lead to a further downgrade.
	·	Substandard (RR 8) – a loan that has at least one identified weakness that is well defined. This rating is for credits where the primary sources of repayment are not viable at the time of evaluation or where either the capital or collateral is not adequate to support the loan and the secondary means of repayment do not provide a sufficient level of support to offset the identified weakness. Loss potential exists in the aggregate amount of substandard loans but does not necessarily exist in individual loans.
	·	Doubtful (RR 9) – a loan with an identified weakness that does not have a valid secondary source of repayment. Generally these credits have an impaired primary source of repayment and secondary sources are not sufficient to prevent a loss in the credit. The exact amount of the loss has not been determined at this time.
	·	Loss (RR 10) – a loan or a portion of a loan that is deemed to be uncollectible.

By definition, credit risk grades OAEM (RR 7), substandard (RR 8), doubtful (RR 9) and loss (RR 10) are criticized loans while substandard (RR 8), doubtful (RR 9) and loss (RR 10) are classified loans. These definitions are standardized by all bank regulatory agencies and are generally equally applied to each individual lending institution. The remaining credit risk grades are considered pass credits and are solely defined by Trustmark.

The credit risk grades represent the probability of default (PD) for an individual credit and as such are not a direct indication of loss given default (LGD). The LGD aspect of the subject risk ratings is neither uniform across the nine primary commercial loan groups or constant between the geographic areas. To account for the variance in the LGD aspects of the risk rate system, the loss expectations for each risk rating is integrated into the allowance for loan loss methodology where the calculated LGD is allotted for each individual risk rating with respect to the individual loan group and unique geographic area. The LGD aspect of the reserve methodology is calculated each quarter as a component of the overall reserve factor for each risk grade by loan group and geographic area.

To enhance this process, loans of a certain size that are rated in one of the criticized categories are routinely reviewed to establish an expectation of loss, if any, and if such examination indicates that the level of reserve is not adequate to cover the expectation of loss, a special reserve or impairment is generally applied.

The distribution of the losses is accomplished by means of a loss distribution model that assigns a loss factor to each risk rating (1 to 9) in each commercial loan pool. A factor is not applied to risk rate 10 (Loss) as loans classified as Losses are not carried on Trustmark’s books over quarter-end as they are charged off within the period that the loss is determined.

The expected loss distribution is spread across the various risk ratings by the perceived level of risk for loss. The nine grade scale described above ranges from a negligible risk of loss to an identified loss across its breadth. The loss distribution factors are graduated through the scale on a basis proportional to the degree of risk that appears manifest in each individual rating and assumes that migration through the loan grading system will occur.

Each loan officer assesses the appropriateness of the internal risk rating assigned to their credits on an ongoing basis. Trustmark’s Asset Review area conducts independent credit quality reviews of the majority of Trustmark’s commercial loan portfolio concentrations both on the underlying credit quality of each individual loan portfolio as well as the adherence to Trustmark’s loan policy and the loan administration process. In general, Asset Review conducts reviews of each lending area within a six to eighteen month window depending on the overall credit quality results of the individual area.

In addition to the ongoing internal risk rate monitoring described above, Trustmark conducts monthly credit quality reviews (CQR) for the credits described below, as well as semi-annual analysis and stress testing on all residential real estate development credits and non-owner occupied commercial real estate (CRE) credits of $1.0 million or more as described below:

	·	Trustmark’s Credit Quality Review Committee meets monthly and performs the following functions: detailed review and evaluation of all loans of $100 thousand or more that are either delinquent thirty days or more or on nonaccrual, including determination of appropriate risk ratings, accrual status, and appropriate servicing officer; review of risk rate changes for relationships of $100 thousand or more; quarterly review of all nonaccruals less than $100 thousand to determine whether the credit should be charged off, returned to accrual, or remain in nonaccrual status; monthly/quarterly review of continuous action plans for all credits rated seven or worse for relationships of $100 thousand or more; monthly review of all commercial charge-offs of $25 thousand or more for the preceding month.
	·	Residential real estate developments - a development project analysis is performed on all projects regardless of size. Performance of the development is assessed through an evaluation of the number of lots remaining, the payout ratios, and the loan-to-value ratios. Results are stress tested as to absorption and price of lots. This information is reviewed by each senior credit officer for that market to determine the need for any risk rate or accrual status changes.
	·	Non-owner occupied commercial real estate – a cash flow analysis is performed on all projects with an outstanding balance of $1.0 million or more. In addition, credits are stress tested for vacancies and rate sensitivity. Confirmation is obtained that guarantor financial statements are current, taxes have been paid, and that there are no other issues that need to be addressed. This information is reviewed by each senior credit officer for that market to determine the need for any risk rate or accrual status changes.

Consumer Credits

Consumer LHFI that do not meet a minimum custom credit score are reviewed quarterly by Management. The Retail Credit Review Committee reviews the volume and percentage of approvals that did not meet the minimum passing custom score by region, individual location, and officer. To assure that Trustmark continues to originate quality loans, this process allows Management to make necessary changes such as revisions to underwriting procedures and credit policies, or changes in loan authority to Trustmark personnel.

Trustmark monitors the levels and severity of past due consumer LHFI on a daily basis through its collection activities. A detailed assessment of consumer LHFI delinquencies is performed monthly at both a product and market level by delivery channel, which incorporates the perceived level of risk at time of underwriting. Trustmark also monitors its consumer LHFI delinquency trends by comparing them to quarterly industry averages.

The table below illustrates the carrying amount of LHFI by credit quality indicator at December 31, 2013 and 2012 ($ in thousands):

		31-Dec-13
					Commercial LHFI
					Pass -			Special Mention -			Substandard -			Doubtful -
					Categories 1-6			Category 7			Category 8			Category 9		Subtotal
Loans secured by real estate:
Construction, land development and other land loans					$	493,380		$	4,383		$	47,610		$	318	$	545,691
Secured by 1-4 family residential properties						119,640			479			7,839			110		128,068
Secured by nonfarm, nonresidential properties						1,313,470			12,620			87,203			399		1,413,692
Other						178,951			-			6,756			235		185,942
Commercial and industrial loans						1,099,429			18,771			37,209			2,187		1,157,596
Consumer loans						496			-			-			-		496
Other loans						777,395			60			4,126			669		782,250
					$	3,982,761		$	36,313		$	190,743		$	3,918	$	4,213,735

		Consumer LHFI
					Past Due			Past Due
		Current			30-89 Days			90 Days or More			Nonaccrual			Subtotal		Total LHFI
Loans secured by real estate:
Construction, land development and other land loans		$	50,850		$	131		$	-		$	217		$	51,198	$	596,889
Secured by 1-4 family residential properties			1,327,624			8,937			2,996			17,939			1,357,496		1,485,564
Secured by nonfarm, nonresidential properties			1,439			8			-			-			1,447		1,415,139
Other			3,418			2			-			-			3,420		189,362
Commercial and industrial loans			13			5			-			-			18		1,157,614
Consumer loans			162,348			2,012			302			150			164,812		165,308
Other loans			6,755			-			-			-			6,755		789,005
		$	1,552,447		$	11,095		$	3,298		$	18,306		$	1,585,146	$	5,798,881

		31-Dec-12
					Commercial LHFI
					Pass -			Special Mention -			Substandard -			Doubtful -
					Categories 1-6			Category 7			Category 8			Category 9		Subtotal
Loans secured by real estate:
Construction, land development and other land loans					$	335,179		$	23,812		$	63,832		$	143	$	422,966
Secured by 1-4 family residential properties						110,333			1,012			13,303			432		125,080
Secured by nonfarm, nonresidential properties						1,298,820			12,156			98,082			-		1,409,058
Other						178,790			444			5,768			-		185,002
Commercial and industrial loans						1,091,356			36,992			39,479			1,334		1,169,161
Consumer loans						404			-			-			-		404
Other loans						676,618			59			1,714			784		679,175
					$	3,691,500		$	74,475		$	222,178		$	2,693	$	3,990,846

		Consumer LHFI
					Past Due			Past Due
		Current			30-89 Days			90 Days or More			Nonaccrual			Subtotal		Total LHFI
Loans secured by real estate:
Construction, land development and other land loans		$	44,131		$	1,109		$	-		$	769		$	46,009	$	468,975
Secured by 1-4 family residential properties			1,339,000			10,332			2,630			20,438			1,372,400		1,497,480
Secured by nonfarm, nonresidential properties			1,206			-			-			-			1,206		1,410,264
Other			4,746			150			-			51			4,947		189,949
Commercial and industrial loans			313			29			-			10			352		1,169,513
Consumer loans			167,131			3,481			285			359			171,256		171,660
Other loans			5,738			-			-			-			5,738		684,913
		$	1,562,265		$	15,101		$	2,915		$	21,627		$	1,601,908	$	5,592,754

Past Due LHFI and LHFS

LHFI past due 90 days or more totaled $3.3 million and $6.4 million at December 31, 2013 and 2012, respectively. The following table provides an aging analysis of past due and nonaccrual LHFI by class at December 31, 2013 and 2012 ($ in thousands):

		31-Dec-13
		Past Due
					90 Days									Current
		30-89 Days			or More (1)			Total			Nonaccrual			Loans		Total LHFI
Loans secured by real estate:
Construction, land development and other land loans		$	923		$	-		$	923		$	13,327		$	582,639	$	596,889
Secured by 1-4 family residential properties			9,437			2,996			12,433			21,603			1,451,528		1,485,564
Secured by nonfarm, nonresidential properties			2,044			-			2,044			21,809			1,391,286		1,415,139
Other			5			-			5			1,327			188,030		189,362
Commercial and industrial loans			1,007			-			1,007			6,286			1,150,321		1,157,614
Consumer loans			2,012			302			2,314			151			162,843		165,308
Other loans			17			-			17			735			788,253		789,005
Total		$	15,445		$	3,298		$	18,743		$	65,238		$	5,714,900	$	5,798,881

(1) - Past due 90 days or more but still accruing interest.

		31-Dec-12
		Past Due
					90 Days									Current
		30-89 Days			or More (1)			Total			Nonaccrual			Loans		Total LHFI
Loans secured by real estate:
Construction, land development and other land loans		$	4,957		$	438		$	5,395		$	27,105		$	436,475	$	468,975
Secured by 1-4 family residential properties			12,626			3,131			15,757			27,114			1,454,609		1,497,480
Secured by nonfarm, nonresidential properties			9,460			-			9,460			18,289			1,382,515		1,410,264
Other			172			-			172			3,956			185,821		189,949
Commercial and industrial loans			4,317			2,525			6,842			4,741			1,157,930		1,169,513
Consumer loans			3,480			284			3,764			360			167,536		171,660
Other loans			181			-			181			798			683,934		684,913
Total		$	35,193		$	6,378		$	41,571		$	82,363		$	5,468,820	$	5,592,754

(1) - Past due 90 days or more but still accruing interest.

LHFS past due 90 days or more totaled $21.5 million and $43.1 million at December 31, 2013 and 2012, respectively. LHFS past due 90 days or more are serviced loans eligible for repurchase, which are fully guaranteed by GNMA. GNMA optional repurchase programs allow financial institutions to buy back individual delinquent mortgage loans that meet certain criteria from the securitized loan pool for which the institution provides servicing. At the servicer's option and without GNMA's prior authorization, the servicer may repurchase such a delinquent loan for an amount equal to 100 percent of the remaining principal balance of the loan. This buy-back option is considered a conditional option until the delinquency criteria are met, at which time the option becomes unconditional. When Trustmark is deemed to have regained effective control over these loans under the unconditional buy-back option, the loans can no longer be reported as sold and must be brought back onto the balance sheet as loans held for sale, regardless of whether Trustmark intends to exercise the buy-back option. These loans are reported as held for sale with the offsetting liability being reported as short-term borrowings.

During the first quarter of 2013, Trustmark exercised its option to repurchase delinquent loans serviced for GNMA. These loans were subsequently sold to a third party under different repurchase provisions. Trustmark retained the servicing for these loans, which are fully guaranteed by FHA/VA. As a result of this repurchase and sale, the loans are no longer carried as LHFS. The transaction resulted in a gain of $534 thousand, which is included in mortgage banking, net for 2013. Trustmark did not exercise its buy-back option on any delinquent loans serviced for GNMA during 2012.

Allowance for Loan Losses, LHFI

Trustmark’s allowance for loan loss methodology for commercial LHFI is based upon regulatory guidance from its primary regulator and GAAP. The methodology segregates the commercial purpose and commercial construction LHFI portfolios into nine separate loan types (or pools) which have similar characteristics such as repayment, collateral and risk profiles. The nine basic loan pools are further segregated into Trustmark’s five key market regions, Alabama, Florida, Mississippi, Tennessee and Texas, to take into consideration the uniqueness of each market. A 10-point risk rating system is utilized for each separate loan pool to apply a reserve factor consisting of quantitative and qualitative components to determine the needed allowance by each loan type. As a result, there are 450 risk rate factors for commercial loan types. The nine separate pools are shown below:

Commercial Purpose LHFI
	·	Real Estate – Owner Occupied
	·	Real Estate – Non-Owner Occupied
	·	Working Capital
	·	Non-Working Capital
	·	Land
	·	Lots and Development
	·	Political Subdivisions

Commercial Construction LHFI
	·	1 to 4 Family
	·	Non-1 to 4 Family

The quantitative factors of the allowance methodology reflect a twelve-quarter rolling average of net charge-offs by loan type within each key market region. This allows for a greater sensitivity to current trends, such as economic changes, as well as current loss profiles and creates a more accurate depiction of historical losses.

Qualitative factors used in the allowance methodology include the following:

	·	National and regional economic trends and conditions
	·	Impact of recent performance trends
	·	Experience, ability and effectiveness of management
	·	Adherence to Trustmark’s loan policies, procedures and internal controls
	·	Collateral, financial and underwriting exception trends
	·	Credit concentrations
	·	Acquisitions
	·	Catastrophe

Each qualitative factor is converted to a scale ranging from 0 (No risk) to 100 (High Risk), other than the last two factors, which are applied on a dollar-for-dollar basis to ensure that the combination of such factors is proportional. The resulting ratings from the individual factors are weighted and summed to establish the weighted-average qualitative factor of a specific loan portfolio within each key market region. This weighted-average qualitative factor is then distributed over the nine primary loan pools within each key market region based on the ranking by risk of each.

During 2013, Trustmark revised the qualitative portion of the allowance for loan loss methodology for commercial LHFI. Trustmark incorporated a loan facility risk component to the existing qualitative risk valuation allowance. Loan facility risk embodies the nature, frequency and duration of the repayment structure as it pertains to the actual source of loan repayment. The underlying loan structure and nature of the credit either is risk neutral for standard structure or adds risk to the credit for any variance that represents additional credit risk from the standard structure. If the facility structure adds additional credit risk, qualitative reserves are added to individual loans based on their respective commercial loan pools. Factors considered in assigning facility risk would include whether the principal is amortizing or not amortizing, revolving or not revolving, the payment frequency and the duration of the payment structure. An additional provision of approximately $1.6 million was recorded in 2013 as a result of this revision to the qualitative portion of the allowance for loan loss methodology for commercial LHFI.

For each commercial loan portfolio, the loan facility risk factor’s percentage of the balances are summed and weighted based on commercial loan portfolio rankings. This weighted-average facility factor is then distributed over the nine primary loan pools within each key market region based on the ranking by risk of each.

During 2012, Trustmark revised the quantitative portion of the allowance for loan loss methodology for consumer and residential LHFI. Trustmark converted the historical loss factor from a 20-quarter net charge-off rolling average to a 12-quarter rolling average and developed a separate reserve for junior liens on 1-4 family LHFI. The change in quantitative methodology allows Trustmark to more readily correlate portfolio risk to the current market environment as the impact of more recent experience is emphasized. This change also allows for a greater sensitivity to current trends such as economic and performance changes, which includes current loss profiles, and creates a more accurate depiction of historical losses. Loans and lines of credit secured by junior liens on 1-4 family residential properties are being reserved for separately in light of continued uncertainty in the economy and the housing market in particular. An additional provision of approximately $1.4 million was recorded in 2012 as a result of this revision to the quantitative portion of the allowance for loan loss methodology for consumer and residential LHFI.

The allowance for loan loss methodology segregates the consumer LHFI portfolio into homogeneous pools of loans that contain similar structure, repayment, collateral and risk profiles. These homogeneous pools of loans are shown below:

	·	Residential Mortgage
	·	Direct Consumer
	·	Auto Finance
	·	Junior Lien on 1-4 Family Residential Properties
	·	Credit Cards
	·	Overdrafts

The historical loss experience for these pools is determined by calculating a 12-quarter rolling average of net charge-offs, which is applied to each pool to establish the quantitative aspect of the methodology. Where, in Management’s estimation, the calculated loss experience does not fully cover the anticipated loss for a pool, an estimate is also applied to each pool to establish the qualitative aspect of the methodology, which represents the perceived risks across the loan portfolio at the current point in time. This qualitative methodology utilizes five separate factors made up of unique components that when weighted and combined produce an estimated level of reserve for each of the loan pools. The five qualitative factors include the following:

	·	Economic indicators
	·	Performance trends
	·	Management experience
	·	Lending policy measures
	·	Credit concentrations

The risk measure for each factor is converted to a scale ranging from 0 (No risk) to 100 (High Risk) to ensure that the combination of such factors is proportional. The determination of the risk measurement for each qualitative factor is done for all markets combined. The resulting estimated reserve factor is then applied to each pool.

The resulting ratings from the individual factors are weighted and summed to establish the weighted-average qualitative factor of a specific loan portfolio. This weighted-average qualitative factor is then applied over the six loan pools.

Changes in the allowance for loan losses, LHFI were as follows ($ in thousands):

		2013			2012			2011
Balance at January 1,		$	78,738		$	89,518		$	93,510
Loans charged-off			(13,478	)		(31,376	)		(45,769	)
Recoveries			14,609			13,830			12,073
Net recoveries (charge-offs)			1,131			(17,546	)		(33,696	)
Provision for loan losses, LHFI			(13,421	)		6,766			29,704
Balance at December 31,		$	66,448		$	78,738		$	89,518

The following tables detail the balance in the allowance for loan losses, LHFI by portfolio segment at December 31, 2013 and 2012, respectively ($ in thousands):

		2013
		Balance									Provision for			Balance
		January 1,			Charge-offs			Recoveries			Loan Losses			December 31,
Loans secured by real estate:
Construction, land development and other land loans		$	21,838		$	(1,441	)	$	3,077		$	(10,309	)	$	13,165
Secured by 1-4 family residential properties			12,957			(1,298	)		427			(2,453	)		9,633
Secured by nonfarm, nonresidential properties			21,096			(1,002	)		225			(647	)		19,672
Other			2,197			(910	)		229			564			2,080
Commercial and industrial loans			14,319			(1,371	)		2,298			276			15,522
Consumer loans			3,087			(2,425	)		4,798			(3,055	)		2,405
Other loans			3,244			(5,031	)		3,555			2,203			3,971
Total allowance for loan losses, LHFI		$	78,738		$	(13,478	)	$	14,609		$	(13,421	)	$	66,448

		Disaggregated by Impairment Method
		Individually			Collectively			Total
Loans secured by real estate:
Construction, land development and other land loans		$	988		$	12,177		$	13,165
Secured by 1-4 family residential properties			191			9,442			9,633
Secured by nonfarm, nonresidential properties			2,307			17,365			19,672
Other			123			1,957			2,080
Commercial and industrial loans			1,253			14,269			15,522
Consumer loans			2			2,403			2,405
Other loans			317			3,654			3,971
Total allowance for loan losses, LHFI		$	5,181		$	61,267		$	66,448

		2012
		Balance									Provision for			Balance
		January 1,			Charge-offs			Recoveries			Loan Losses			December 31,
Loans secured by real estate:
Construction, land development and other land loans		$	27,220		$	(3,480	)	$	-		$	(1,902	)	$	21,838
Secured by 1-4 family residential properties			12,650			(5,532	)		435			5,404			12,957
Secured by nonfarm, nonresidential properties			24,358			(5,410	)		-			2,148			21,096
Other			3,079			(1,601	)		-			719			2,197
Commercial and industrial loans			15,868			(6,922	)		3,916			1,457			14,319
Consumer loans			3,656			(3,082	)		6,211			(3,698	)		3,087
Other loans			2,687			(5,349	)		3,268			2,638			3,244
Total allowance for loan losses, LHFI		$	89,518		$	(31,376	)	$	13,830		$	6,766		$	78,738

		Disaggregated by Impairment Method
		Individually			Collectively			Total
Loans secured by real estate:
Construction, land development and other land loans		$	4,992		$	16,846		$	21,838
Secured by 1-4 family residential properties			1,469			11,488			12,957
Secured by nonfarm, nonresidential properties			2,296			18,800			21,096
Other			760			1,437			2,197
Commercial and industrial loans			640			13,679			14,319
Consumer loans			5			3,082			3,087
Other loans			342			2,902			3,244
Total allowance for loan losses, LHFI		$	10,504		$	68,234		$	78,738

Acquired_Loans

Acquired Loans	12 Months Ended
Acquired Loans	Dec. 31, 2013
Acquired Loans [Abstract]	'
Acquired Loans	'
	Note 6 – Acquired Loans

	At December 31, 2013 and 2012, acquired loans consisted of the following ($ in thousands):

			31-Dec-13								31-Dec-12
			Covered				Noncovered				Covered				Noncovered
	Loans secured by real estate:
	Construction, land development and other land loans		$	2,363			$	98,928			$	3,924			$	10,056
	Secured by 1-4 family residential properties			16,416				157,914				23,990				19,404
	Secured by nonfarm, nonresidential properties			10,945				287,136				18,407				45,649
	Other			2,644				33,948				3,567				669
	Commercial and industrial loans			394				149,495				747				3,035
	Consumer loans			119				18,428				177				2,610
	Other loans			1,335				24,141				1,229				100
	Acquired loans			34,216				769,990				52,041				81,523
	Less allowance for loan losses, acquired loans			2,387				7,249				4,190				1,885
	Net acquired loans		$	31,829			$	762,741			$	47,851			$	79,638

	On February 15, 2013, Trustmark completed its merger with BancTrust. Loans acquired in the BancTrust acquisition were evaluated for evidence of credit deterioration since origination and collectability of contractually required payments. Trustmark elected to account for all loans acquired in the BancTrust acquisition as acquired impaired loans under FASB ASC Topic 310-30 except for $153.9 million of acquired loans with revolving privileges and acquired commercial leases, which are outside the scope of the guidance. While not all loans acquired from BancTrust exhibited evidence of significant credit deterioration, accounting for these acquired loans under FASB ASC Topic 310-30 would have materially the same result as the alternative accounting treatment. During the second and third quarters of 2013, Trustmark recorded fair value adjustments based on the estimated fair value of certain acquired loans which resulted in a net decrease in acquired noncovered loans totaling $6.8 million. The purchase price allocation was considered final as of December 31, 2013.

	The following table presents the adjusted fair value of loans acquired as of the date of the BancTrust acquisition ($ in thousands):

	At acquisition date:		15-Feb-13
	Contractually required principal and interest		$	1,256,669
	Nonaccretable difference			201,324
	Cash flows expected to be collected			1,055,345
	Accretable yield			98,394
	FASB ASC Topic 310-20 discount			12,716
	Fair value of loans at acquisition		$	944,235

	On March 16, 2012, Trustmark completed its merger with Bay Bank. Loans acquired in the Bay Bank acquisition were evaluated for evidence of credit deterioration since origination and collectability of contractually required payments. Trustmark elected to account for all loans acquired in the Bay Bank acquisition as acquired impaired loans under FASB ASC Topic 310-30 except for $5.9 million of acquired loans with revolving privileges, which are outside the scope of the guidance. While not all loans acquired from Bay Bank exhibited evidence of significant credit deterioration, accounting for these acquired loans under ASC Topic 310-30 would have materially the same result as the alternative accounting treatment. The purchase price allocation was finalized in the second quarter of 2012.

	The following table presents the fair value of loans acquired as of the date of the Bay Bank acquisition ($ in thousands):

	At acquisition date:		16-Mar-12
	Contractually required principal and interest		$	134,615
	Nonaccretable difference			20,161
	Cash flows expected to be collected			114,454
	Accretable yield			15,538
	FASB ASC Topic 310-20 discount			1,002
	Fair value of loans at acquisition		$	97,914

	The following table presents changes in the net carrying value of the acquired loans for the periods presented ($ in thousands):

			Covered								Noncovered
			Acquired				Acquired				Acquired				Acquired
			Impaired				Not ASC 310-30 (1)				Impaired				Not ASC 310-30 (1)
	Carrying value, net at January 1, 2012		$	72,131			$	4,171			$	4,350			$	13
	Loans acquired (2)			-				-				91,987				5,927
	Accretion to interest income			8,031				367				4,138				161
	Payments received, net			(27,496	)			(2,107	)			(24,330	)			868
	Other			(3,085	)			29				(1,318	)			(273	)
	Less allowance for loan losses, acquired loans			(4,190	)			-				(1,885	)			-
	Carrying value, net at December 31, 2012			45,391				2,460				72,942				6,696
	Loans acquired (3)			-				-				790,335				153,900
	Accretion to interest income			5,150				159				35,538				2,628
	Payments received, net			(18,976	)			(819	)			(229,618	)			(39,281	)
	Other			(3,202	)			(137	)			(24,177	)			(858	)
	Less allowance for loan losses, acquired loans			1,803				-				(5,364	)			-
	Carrying value, net at December 31, 2013		$	30,166			$	1,663			$	639,656			$	123,085

	(1) Acquired nonimpaired loans consist of revolving credit agreements and commercial leases that are not in scope for FASB ASC Topic 310-30.
	(2) Fair value of loans acquired from Bay Bank on March 16, 2012.
(3) Adjusted fair value of loans acquired from BancTrust on February 15, 2013.

The following table presents changes in the accretable yield for the years ended December 31, 2013 and 2012 ($ in thousands):

		Years Ended December 31,
		2013				2012
Accretable yield at January 1, (1)		$	(26,383	)		$	(17,653	)
Additions due to acquisition (2)			(98,394	)			(15,538	)
Accretion to interest income			40,688				12,169
Disposals			18,438				3,757
Reclassification to / (from) nonaccretable difference (3)			(43,355	)			(9,118	)
Accretable yield at December 31,		$	(109,006	)		$	(26,383	)

-1	Accretable yield at January 1, 2012, includes $777 thousand of accretable yield for noncovered loans acquired from Heritage
-1	and accounted for under FASB ASC Topic 310-30.
-2	Accretable yield on loans acquired from BancTrust on February 15, 2013 and Bay Bank on March 16, 2012.
-3	Reclassifications from nonaccretable difference are due to lower loss expectations and improvements in expected cashflows.

The following table presents the components of the allowance for loan losses on acquired impaired loans for the years ended December 31, 2013 and 2012 ($ in thousands):

		Covered				Noncovered				Total
Balance at January 1, 2013		$	4,190			$	1,885			$	6,075
Provision for loan losses, acquired loans			(1,328	)			7,367				6,039
Loans charged-off			(460	)			(3,634	)			(4,094	)
Recoveries			(15	)			1,631				1,616
Net charge-offs			(475	)			(2,003	)			(2,478	)
Balance at December 31, 2013		$	2,387			$	7,249			$	9,636

		Covered				Noncovered				Total
Balance at January 1, 2012		$	502			$	-			$	502
Provision for loan losses, acquired loans			3,612				1,916				5,528
Loans charged-off			(81	)			(290	)			(371	)
Recoveries			157				259				416
Net recoveries (charge-offs)			76				(31	)			45
Balance at December 31, 2012		$	4,190			$	1,885			$	6,075

As discussed in Note 5 - Loans Held for Investment (LHFI) and Allowance for Loan Losses, LHFI, Trustmark has established a loan grading system that consists of ten individual credit risk grades (risk ratings) that encompass a range from loans where the expectation of loss is negligible to loans where loss has been established. The model is based on the risk of default for an individual credit and establishes certain criteria to segregate the level of risk across the ten unique risk ratings. These credit quality measures are unique to commercial loans. Credit quality for consumer loans is based on individual credit scores, aging status of the loan and payment activity.

The tables below illustrate the carrying amount of acquired loans by credit quality indicator at December 31, 2013 and 2012 ($ in thousands):

		31-Dec-13
						Commercial Loans
						Pass -				Special Mention -				Substandard -				Doubtful -
						Categories 1-6				Category 7				Category 8				Category 9		Subtotal
Covered Loans: (1)
Loans secured by real estate:
Construction, land development and other land loans						$	228			$	-			$	1,126			$	771	$	2,125
Secured by 1-4 family residential properties							1,629				430				1,798				-		3,857
Secured by nonfarm, nonresidential properties							5,446				109				4,723				-		10,278
Other							832				134				717				2		1,685
Commercial and industrial loans							254				28				112				-		394
Consumer loans							-				-				-				-		-
Other loans							271				-				414				646		1,331
Total covered loans							8,660				701				8,890				1,419		19,670

Noncovered loans:
Loans secured by real estate:
Construction, land development and other land loans							39,075				2,506				42,486				8,445		92,512
Secured by 1-4 family residential properties							33,810				2,983				17,422				538		54,753
Secured by nonfarm, nonresidential properties							184,594				9,027				88,952				4,563		287,136
Other							28,156				1,437				4,071				184		33,848
Commercial and industrial loans							116,818				2,248				24,084				6,039		149,189
Consumer loans							21				-				-				-		21
Other loans							21,881				-				882				1,306		24,069
Total noncovered loans							424,355				18,201				177,897				21,075		641,528
Total acquired loans						$	433,015			$	18,902			$	186,787			$	22,494	$	661,198

		Consumer Loans
						Past Due				Past Due										Total
		Current				30-89 Days				90 Days or More				Nonaccrual				Subtotal		Acquired Loans
Covered Loans: (1)
Loans secured by real estate:
Construction, land development and other land loans		$	133			$	77			$	28			$	-			$	238	$	2,363
Secured by 1-4 family residential properties			11,179				428				952				-				12,559		16,416
Secured by nonfarm, nonresidential properties			495				-				172				-				667		10,945
Other			617				342				-				-				959		2,644
Commercial and industrial loans			-				-				-				-				-		394
Consumer loans			119				-				-				-				119		119
Other loans			4				-				-				-				4		1,335
Total covered loans			12,547				847				1,152				-				14,546		34,216

Noncovered loans:
Loans secured by real estate:
Construction, land development and other land loans			5,813				108				495				-				6,416		98,928
Secured by 1-4 family residential properties			95,987				3,599				3,466				109				103,161		157,914
Secured by nonfarm, nonresidential properties			-				-				-				-				-		287,136
Other			100				-				-				-				100		33,948
Commercial and industrial loans			306				-				-				-				306		149,495
Consumer loans			18,076				239				92				-				18,407		18,428
Other loans			72				-				-				-				72		24,141
Total noncovered loans			120,354				3,946				4,053				109				128,462		769,990
Total acquired loans		$	132,901			$	4,793			$	5,205			$	109			$	143,008	$	804,206

-1	Total dollar balances are presented in this table; however, these loans are covered by the loss-share agreement with the FDIC. TNB is at risk for only 20% of the losses incurred on these loans.

		31-Dec-12
						Commercial Loans
						Pass -				Special Mention -				Substandard -				Doubtful -
						Categories 1-6				Category 7				Category 8				Category 9		Subtotal
Covered Loans: (1)
Loans secured by real estate:
Construction, land development and other land loans						$	1,341			$	18			$	1,489			$	744	$	3,592
Secured by 1-4 family residential properties							3,128				810				2,940				85		6,963
Secured by nonfarm, nonresidential properties							5,857				1,052				9,839				798		17,546
Other							443				318				1,231				-		1,992
Commercial and industrial loans							82				458				207				-		747
Consumer loans							-				-				-				-		-
Other loans							245				-				345				535		1,125
Total covered loans							11,096				2,656				16,051				2,162		31,965

Noncovered loans:
Loans secured by real estate:
Construction, land development and other land loans							3,259				119				4,915				921		9,214
Secured by 1-4 family residential properties							7,325				-				3,708				23		11,056
Secured by nonfarm, nonresidential properties							22,453				3,596				18,682				831		45,562
Other							236				-				417				-		653
Commercial and industrial loans							2,853				89				93				-		3,035
Consumer loans							-				-				-				-		-
Other loans							86				-				-				-		86
Total noncovered loans							36,212				3,804				27,815				1,775		69,606
Total acquired loans						$	47,308			$	6,460			$	43,866			$	3,937	$	101,571

		Consumer Loans
						Past Due				Past Due										Total
		Current				30-89 Days				90 Days or More				Nonaccrual				Subtotal		Acquired Loans
Covered Loans: (1)
Loans secured by real estate:
Construction, land development and other land loans		$	306			$	26			$	-			$	-			$	332	$	3,924
Secured by 1-4 family residential properties			14,311				1,028				1,650				38				17,027		23,990
Secured by nonfarm, nonresidential properties			692				169				-				-				861		18,407
Other			1,468				48				52				7				1,575		3,567
Commercial and industrial loans			-				-				-				-				-		747
Consumer loans			177				-				-				-				177		177
Other loans			104				-				-				-				104		1,229
Total covered loans			17,058				1,271				1,702				45				20,076		52,041

Noncovered loans:
Loans secured by real estate:
Construction, land development and other land loans			802				-				40				-				842		10,056
Secured by 1-4 family residential properties			7,715				357				215				61				8,348		19,404
Secured by nonfarm, nonresidential properties			87				-				-				-				87		45,649
Other			16				-				-				-				16		669
Commercial and industrial loans			-				-				-				-				-		3,035
Consumer loans			2,394				164				52				-				2,610		2,610
Other loans			14				-				-				-				14		100
Total noncovered loans			11,028				521				307				61				11,917		81,523
Total acquired loans		$	28,086			$	1,792			$	2,009			$	106			$	31,993	$	133,564

-1	Total dollar balances are presented in this table; however, these loans are covered by the loss-share agreement with the FDIC. TNB is at risk for only 20% of the losses incurred on these loans.

At December 31, 2013 and 2012, there were no acquired impaired loans accounted for under FASB ASC Topic 310-30 classified as nonaccrual loans. At December 31, 2013, approximately $2.4 million of acquired loans not accounted for under FASB ASC Topic 310-30 were classified as nonaccrual loans, compared to approximately $1.1 million of acquired loans at December 31, 2012.

The following table provides an aging analysis of contractually past due and nonaccrual acquired loans, by class at December 31, 2013 and 2012 ($ in thousands):

		31-Dec-13
		Past Due
						90 Days												Current		Total Acquired
		30-89 Days				or More (1)				Total				Nonaccrual (2)				Loans		Loans
Covered loans:
Loans secured by real estate:
Construction, land development and other land loans		$	87			$	553			$	640			$	445			$	1,278	$	2,363
Secured by 1-4 family residential properties			873				1,142				2,015				-				14,401		16,416
Secured by nonfarm, nonresidential properties			1,905				793				2,698				-				8,247		10,945
Other			710				2				712				-				1,932		2,644
Commercial and industrial loans			13				-				13				41				340		394
Consumer loans			-				-				-				-				119		119
Other loans			-				646				646				-				689		1,335
Total covered loans			3,588				3,136				6,724				486				27,006		34,216

Noncovered loans:
Loans secured by real estate:
Construction, land development and other land loans			2,116				31,744				33,860				67				65,001		98,928
Secured by 1-4 family residential properties			5,067				7,589				12,656				116				145,142		157,914
Secured by nonfarm, nonresidential properties			7,978				15,421				23,399				461				263,276		287,136
Other			40				1,922				1,962				33				31,953		33,948
Commercial and industrial loans			743				3,387				4,130				1,170				144,195		149,495
Consumer loans			239				92				331				-				18,097		18,428
Other loans			-				153				153				20				23,968		24,141
Total noncovered loans			16,183				60,308				76,491				1,867				691,632		769,990
Total acquired loans		$	19,771			$	63,444			$	83,215			$	2,353			$	718,638	$	804,206

(1) - Past due 90 days or more but still accruing interest.
(2) - Acquired loans not accounted for under FASB ASC Topic 310-30.

		31-Dec-12
		Past Due
						90 Days												Current		Total Acquired
		30-89 Days				or More (1)				Total				Nonaccrual (2)				Loans		Loans
Covered loans:
Loans secured by real estate:
Construction, land development and other land loans		$	240			$	246			$	486			$	445			$	2,993	$	3,924
Secured by 1-4 family residential properties			1,705				1,883				3,588				234				20,168		23,990
Secured by nonfarm, nonresidential properties			3,953				1,539				5,492				-				12,915		18,407
Other			221				52				273				9				3,285		3,567
Commercial and industrial loans			94				4				98				39				610		747
Consumer loans			-				-				-				-				177		177
Other loans			-				-				-				-				1,229		1,229
Total covered loans			6,213				3,724				9,937				727				41,377		52,041

Noncovered loans:
Loans secured by real estate:
Construction, land development and other land loans			-				3,622				3,622				-				6,434		10,056
Secured by 1-4 family residential properties			458				1,392				1,850				243				17,311		19,404
Secured by nonfarm, nonresidential properties			3,526				1,217				4,743				133				40,773		45,649
Other			30				44				74				-				595		669
Commercial and industrial loans			217				23				240				-				2,795		3,035
Consumer loans			164				52				216				-				2,394		2,610
Other loans			-				-				-				-				100		100
Total noncovered loans			4,395				6,350				10,745				376				70,402		81,523
Total acquired loans		$	10,608			$	10,074			$	20,682			$	1,103			$	111,779	$	133,564

(1) - Past due 90 days or more but still accruing interest.
(2) - Acquired loans not accounted for under FASB ASC Topic 310-30.

Premises_and_Equipment_Net

Premises and Equipment, Net	12 Months Ended
Premises and Equipment, Net	Dec. 31, 2013
Premises and Equipment, Net [Abstract]	'
Premises and Equipment, Net	'
	Note 7 – Premises and Equipment, Net

	At December 31, 2013 and 2012, premises and equipment are summarized as follows ($ in thousands):

		2013		2012
	Land	$	58,132	$	40,327
	Buildings and leasehold improvements		199,976		163,638
	Furniture and equipment		154,633		142,771
	Total cost of premises and equipment		412,741		346,736
	Less accumulated depreciation and amortization		205,458		191,895
	Premises and equipment, net	$	207,283	$	154,841

Mortgage_Banking

Mortgage Banking	12 Months Ended
	Dec. 31, 2013
Mortgage Banking [Abstract]	'
Mortgage Banking	'
	Note 8 – Mortgage Banking

	Mortgage Servicing Rights

	The activity in MSR is detailed in the table below ($ in thousands):

		2013			2012
	Balance at beginning of period	$	47,341		$	43,274
	Origination of servicing assets		18,481			23,253
	Change in fair value:
	Due to market changes		11,818			(9,378	)
	Due to runoff		(9,806	)		(9,808	)
	Balance at end of period	$	67,834		$	47,341

	In the determination of the fair value of MSR at the date of securitization, certain key economic assumptions are made. For instance, Trustmark considers the conditional prepayment rate (CPR), which is an estimated loan prepayment rate that uses historical prepayment rates for previous loans similar to the loans being evaluated, and the discount rate in determining the fair value of MSR. An increase in either the CPR or discount rate assumption will result in a decrease in the fair value of the MSR, while a decrease in either assumption will result in an increase in the fair value of the MSR. At December 31, 2013, the fair value of MSR included an assumed average prepayment speed of 9.72 CPR and an average discount rate of 10.52% compared to an assumed average prepayment speed of 16.98 CPR and an average discount rate of 10.71% at December 31, 2012. In recent years, there have been significant market-driven fluctuations in loan prepayment speeds and discount rates. These fluctuations can be rapid and may continue to be significant. Therefore, estimating prepayment speed and/or discount rates within ranges that market participants would use in determining the fair value of MSR requires significant management judgment.

	Mortgage Loans Sold/Serviced

	During 2013, 2012 and 2011, Trustmark sold $1.358 billion, $1.816 billion and $969.4 million, respectively, of residential mortgage loans. Pretax gains on these sales were recorded to noninterest income in mortgage banking and totaled $26.4 million in 2013, $33.9 million in 2012 and $12.0 million in 2011. Trustmark receives annual servicing fee income approximating 0.34% of the outstanding balance of the underlying loans. Trustmark's total mortgage loans serviced for others totaled $5.461 billion at December 31, 2013, compared with $5.158 billion at December 31, 2012. The investors and the securitization trusts have no recourse to the assets of Trustmark for failure of debtors to pay when due.

	Trustmark is subject to losses in its loan servicing portfolio due to loan foreclosures. Trustmark has obligations to either repurchase the outstanding principal balance of a loan or make the purchaser whole for the economic benefits of a loan if it is determined that the loan sold was in violation of representations or warranties made by Trustmark at the time of the sale, herein referred to as mortgage loan servicing putback expenses. Such representations and warranties typically include those made regarding loans that had missing or insufficient file documentation and/or loans obtained through fraud by borrowers or other third parties. Putback requests may be made until the loan is paid in full. When a putback request is received, Trustmark evaluates the request and takes appropriate actions based on the nature of the request. Effective January 1, 2013, Trustmark was required by FNMA and Federal Home Loan Mortgage Corporation (FHLMC) to provide a response to putback requests within 60 days of the date of receipt. Currently, putback requests primarily relate to 2005 through 2008 vintage mortgage loans and to government sponsored entity-guaranteed mortgage-backed securities.

	The total mortgage loan servicing putback expenses incurred by Trustmark were $1.5 million during 2013, $8.0 million during 2012 and $5.1 million during 2011. During 2012, Trustmark updated its quarterly analysis of mortgage loan putback exposure, which resulted in Trustmark providing an additional reserve of approximately $4.0 million. During November 2013, Trustmark finalized its agreement with FNMA (the "Resolution Agreement") to resolve its existing and future repurchase and make whole obligations (collectively “Repurchase Obligations”) related to mortgage loans originated between January 1, 2000 and December 31, 2008 and delivered to FNMA. Under the terms of the Resolution Agreement, Trustmark paid FNMA approximately $3.6 million with respect to the Repurchase Obligations. Trustmark believes that it was in its best interests to execute the Resolution Agreement in order to bring finality to the loss reimbursement exposure with FNMA for these years and reduce the resources spent on individual file reviews and defending loss reimbursement requests. The Repurchase Obligations were covered by Trustmark’s existing reserve for mortgage loan servicing putback expenses. At December 31, 2013 and 2012, the reserve for mortgage loan servicing putback expenses totaled $1.1 million and $7.8 million, respectively.

	There is inherent uncertainty in reasonably estimating the requirement for reserves against future mortgage loan servicing putback expenses. Future putback expenses are dependent on many subjective factors, including the review procedures of the purchasers and the potential refinance activity on loans sold with servicing released and the subsequent consequences under the representations and warranties. Trustmark believes that it has appropriately reserved for potential mortgage loan servicing putback requests.

Goodwill_and_Identifiable_Inta

Goodwill and Identifiable Intangible Assets	12 Months Ended
Goodwill and Identifiable Intangible Assets	Dec. 31, 2013
Goodwill and Identifiable Intangible Assets [Abstract]	'
Goodwill and Identifiable Intangible Assets	'
	Note 9 – Goodwill and Identifiable Intangible Assets

	Goodwill

	The table below illustrates goodwill by segment for the years ended December 31, 2013 and 2012 ($ in thousands).


		General
		Banking		Insurance		Total
	Balance as of January 1, 2013 and 2012	$	246,736	$	44,368	$	291,104
	Goodwill from acquisitions during 2013		81,747		-		81,747
	Balance as of December 31, 2013	$	328,483	$	44,368	$	372,851

	Trustmark's General Banking segment delivers a full range of banking services to consumer, corporate, small and middle-market businesses through its extensive branch network. The Insurance segment includes TNB’s wholly-owned retail insurance subsidiary that offers a diverse mix of insurance products and services. Trustmark performed an impairment test of goodwill of reporting units in both the General Banking and Insurance segments during 2013, 2012 and 2011, which indicated that no impairment charge was required. Based on this analysis, Trustmark concluded that no impairment charge was required.

	Identifiable Intangible Assets

	At December 31, 2013 and 2012, identifiable intangible assets consisted of the following ($ in thousands):

		2013						2012
		Gross Carrying		Accumulated		Net Carrying		Gross Carrying		Accumulated		Net Carrying
		Amount		Amortization		Amount		Amount		Amortization		Amount

	Core deposit intangibles	$	85,824	$	46,437	$	39,387	$	52,327	$	38,532	$	13,795
	Insurance intangibles		11,693		9,967		1,726		11,693		9,188		2,505
	Banking charters		1,325		678		647		1,325		612		713
	Borrower relationship intangible		690		460		230		690		397		293
	Total	$	99,532	$	57,542	$	41,990	$	66,035	$	48,729	$	17,306

	In 2013, 2012 and 2011, Trustmark recorded $8.8 million, $3.8 million and $3.1 million, respectively, of amortization of identifiable intangible assets. Trustmark estimates that amortization expense for identifiable intangible assets will be $8.8 million in 2014, $7.6 million in 2015, $6.7 million in 2016, $5.7 million in 2017 and $4.8 million in 2018. Fully amortized intangibles are excluded from the table above. Trustmark continually evaluates whether events and circumstances have occurred that indicate that identifiable intangible assets have become impaired. Measurement of any impairment of such identifiable intangible assets is based on the fair values of those assets. There were no impairment losses on identifiable intangible assets recorded during 2013, 2012 or 2011.

	The following table illustrates the carrying amounts and remaining weighted-average amortization periods of identifiable intangible assets ($ in thousands):

		2013
				Remaining
				Weighted-
				Average
		Net Carrying		Amortization
		Amount		Period in Years

	Core deposit intangibles	$	39,387		8.5
	Insurance intangibles		1,726		5.5
	Banking charters		647		9.7
	Borrower relationship intangible		230		3.7
	Total	$	41,990		8.4

Other_Real_Estate_and_Covered_

Other Real Estate and Covered Other Real Estate	12 Months Ended
Other Real Estate and Covered Other Real Estate	Dec. 31, 2013
Other Real Estate and Covered Other Real Estate [Abstract]	'
Other Real Estate and Covered Other Real Estate	'
	Note 10 – Other Real Estate and Covered Other Real Estate

	Other Real Estate, excluding Covered Other Real Estate

	At December 31, 2013, Trustmark's geographic other real estate distribution was concentrated primarily in its five key market regions: Alabama, Florida, Mississippi, Tennessee and Texas. The ultimate recovery of a substantial portion of the carrying amount of other real estate, excluding covered other real estate, is susceptible to changes in market conditions in these areas.

	For the years ended December 31, 2013, 2012 and 2011, changes and gains (losses), net on other real estate, excluding covered other real estate, were as follows ($ in thousands):

			2013				2012			2011
	Balance at beginning of period		$	78,189			$	79,053		$	86,704
	Additions (1)			80,256				38,894			56,929
	Disposals			(45,545	)			(33,155	)		(50,724	)
	Writedowns			(6,361	)			(6,603	)		(13,856	)
	Balance at end of period		$	106,539			$	78,189		$	79,053

	(Loss) gain, net on the sale of other real estate included in ORE/Foreclosure expense		$	(881	)		$	(279	)	$	1,605

	(1) Includes $40.1 million of other real estate acquired from BancTrust on February 15, 2013, and $2.6 million of other real estate acquired from Bay Bank on March 16, 2012.

	At December 31, 2013 and 2012, other real estate, excluding covered other real estate, by type of property consisted of the following ($ in thousands):

			2013				2012
	Construction, land development and other land properties		$	65,273			$	46,957
	1-4 family residential properties			14,696				8,134
	Nonfarm, nonresidential properties			26,433				22,760
	Other real estate properties			137				338
	Total other real estate, excluding covered other real estate		$	106,539			$	78,189

	At December 31, 2013 and 2012, other real estate, excluding covered other real estate, by geographic location consisted of the following ($ in thousands):

			2013				2012
	Alabama		$	25,912			$	-
	Florida			34,480				18,569
	Mississippi (1)			22,766				27,771
	Tennessee (2)			12,892				17,589
	Texas			10,489				14,260
	Total other real estate, excluding covered other real estate		$	106,539			$	78,189

	(1) - Mississippi includes Central and Southern Mississippi Regions
	(2) - Tennessee includes Memphis, Tennessee and Northern Mississippi Regions

	Covered Other Real Estate

	For the years ended December 31, 2013, 2012 and 2011, changes and gains, net on covered other real estate were as follows ($ in thousands):

			2013				2012			2011
	Balance at beginning of period		$	5,741			$	6,331		$	-
	Covered other real estate acquired (1)			-				-			7,485
	Transfers from covered loans			1,934				1,424			632
	FASB ASC 310-30 adjustment for the residual recorded investment			(345	)			(112	)		(264	)
	Net transfers from covered loans			1,589				1,312			368
	Disposals			(1,442	)			(1,631	)		(1,489	)
	Writedowns			(780	)			(271	)		(33	)
	Balance at end of period		$	5,108			$	5,741		$	6,331

	Gain, net on the sale of covered other real estate included in ORE/Foreclosure expenses		$	119			$	485		$	286

	(1) Covered other real estate acquired from Heritage on April 15, 2011.

	At December 31, 2013 and 2012, covered other real estate consisted of the following types of properties ($ in thousands):

			2013				2012
	Construction, land development and other land properties		$	733			$	1,284
1-4 family residential properties			1,981				1,306
Nonfarm, nonresidential properties			2,394				3,151
Total covered other real estate		$	5,108			$	5,741

FDIC_Indemnification_Asset

FDIC Indemnification Asset	12 Months Ended
FDIC Indemnification Asset	Dec. 31, 2013
FDIC Indemnification Asset [Abstract]	'
FDIC Indemnification Asset	'
	Note 11 – FDIC Indemnification Asset

	Pursuant to the provisions of the Heritage loss-share agreement, TNB may be required to make a true-up payment to the FDIC at the termination of the loss-share agreement should actual losses be less than certain thresholds established in the agreement. TNB calculates the projected true-up payable to the FDIC quarterly and records a FDIC true-up provision for the present value of the projected true-up payable to the FDIC at the termination of the loss-share agreement. TNB’s FDIC true-up provision totaled $1.5 million and $1.1 million at December 31, 2013 and 2012, respectively.

	Trustmark periodically re-estimates the expected cash flows on the acquired covered loans as required by FASB ASC Topic 310-30. For the years ended December 31, 2013, 2012 and 2011, this analysis resulted in improvements in the estimated future cash flows of the acquired covered loans that remain outstanding as well as lower expected remaining losses on those loans, primarily due to pay-offs of acquired covered loans. The pay-offs and improvements in the estimated expected cash flows of the acquired covered loans resulted in a reduction of the expected loss-share receivable from the FDIC. Under ASU 2012-06, write-downs of the FDIC indemnification asset resulting from improvements in expected cash flows and covered losses based on the re-estimation of acquired covered loans are amortized over the lesser of the remaining life or contractual period of the acquired covered loan as a yield adjustment consistent with the associated acquired covered loan. Based on this guidance as well as improvements in the expected cash flows and lower loss expectations during the year for acquired covered loans that remain outstanding, other noninterest income for 2013 included $2.5 million of amortization of the FDIC indemnification asset. During 2013, other noninterest income also included a reduction of the FDIC indemnification asset of $3.4 million, primarily resulting from loan pay-offs partially offset by loan pools of acquired covered loans with increased loss expectations. Other noninterest income included a reduction of the FDIC indemnification asset of $3.7 million and $4.2 million as a result of loan pay-offs, improved cash flow projections and lower loss expectations for loan pools of acquired covered loans for the years ended December 31, 2012 and 2011, respectively.

	For the years ended December 31, 2013, 2012 and 2011, changes in the FDIC indemnification asset were as follows ($ in thousands):

		2013			2012			2011
	Balance at January 1,	$	21,774		$	28,348		$	-
	Additions from acquisition		-			-			33,333
	(Amortization) accretion		(2,469	)		245			185
	Transfers to FDIC claims		(851	)		(2,544	)		(986	)
	Change in expected cash flows		(3,472	)		(3,761	)		(4,157	)
	Change in FDIC true-up provision		(635	)		(514	)		(27	)
	Balance at December 31,	$	14,347		$	21,774		$	28,348

Deposits

Deposits	12 Months Ended
Deposits	Dec. 31, 2013
Deposits [Abstract]	'
Deposits	'
	Note 12 – Deposits

	At December 31, 2013 and 2012, deposits consisted of the following ($ in thousands):

		2013		2012
	Noninterest-bearing demand deposits	$	2,663,503	$	2,254,211
	Interest-bearing demand		1,923,701		1,481,182
	Savings		2,997,294		2,322,280
	Time		2,275,404		1,838,844
	Total	$	9,859,902	$	7,896,517

	Interest expense on deposits by type consisted of the following for 2013, 2012 and 2011 ($ in thousands):

		2013		2012		2011
	Interest-bearing demand	$	3,948	$	3,975	$	7,077
	Savings		3,889		6,004		8,144
	Time		11,881		14,625		21,073
	Total	$	19,718	$	24,604	$	36,294

	The maturities on outstanding time deposits of $100,000 or more at December 31, 2013 and 2012 are as follows ($ in thousands):

		2013		2012
	3 months or less	$	242,757	$	161,806
	Over 3 months through 6 months		208,863		142,026
	Over 6 months through 12 months		312,189		221,056
	Over 12 months		208,208		208,600
	Total	$	972,017	$	733,488

	The maturities of interest-bearing deposits at December 31, 2013, are as follows ($ in thousands):

	2014	$	1,808,342
	2015		277,273
	2016		83,288
	2017		47,550
	2018 and thereafter		58,951
	Total time deposits		2,275,404
	Interest-bearing deposits with no stated maturity		4,920,995
	Total interest-bearing deposits	$	7,196,399

Borrowings

Borrowings	12 Months Ended
	Dec. 31, 2013
Borrowings [Abstract]	'
Borrowings	'
	Note 13 - Borrowings

	Short-Term Borrowings

	At December 31, 2013 and 2012, short-term borrowings consisted of the following ($ in thousands):

		2013		2012
	FHLB advances	$	2,062	$	-
	Serviced GNMA loans eligible for repurchase		38,036		59,775
	Other		26,287		27,145
	Total short-term borrowings	$	66,385	$	86,920

	At December 31, 2013 and 2012, Trustmark had no outstanding short-term FHLB advances with the FHLB of Dallas. At December 31, 2013, Trustmark had two outstanding advances with the FHLB of Atlanta. Both of the advances were assumed through the BancTrust merger. These advances have a weighted average remaining maturity of 134 days with a weighted-average cost of 4.24%. Both of the advances have fixed rates and balances of $2.0 million and $34 thousand with interest rates of 4.21% and 6.11%, respectively. A fair market value adjustment of $28 thousand associated with the BancTrust acquisition was included in the short-term FHLB advances at December 31, 2013. Interest expense on short-term FHLB advances totaled $6 thousand in 2013, $81 thousand in 2012 and $215 thousand in 2011. At December 31, 2013 and 2012, Trustmark had $1.768 billion and $1.882 billion, respectively, available in additional short and long-term borrowing capacity from the FHLB of Dallas. Trustmark has a non-member status and no additional borrowing capacity with the FHLB of Atlanta.

	Long-Term FHLB Advances

	At December 31, 2013, Trustmark had six outstanding long-term FHLB advances totaling $8.5 million with the FHLB of Atlanta, which were acquired in the BancTrust merger. All advances have fixed rates and range from $30 thousand to $6.5 million with interest rates ranging from 0.08% to 6.95%. A fair market value adjustment of $412 thousand associated with the BancTrust merger was included in the long-term FHLB advances at December 31, 2013. These advances have a weighted average remaining maturity of 2.85 years with a weighted-average cost of 3.55%. Trustmark had no long-term FHLB advances outstanding at December 31, 2012. Trustmark’s long-term FHLB advances are collateralized by securities held in safekeeping with the FHLB of Atlanta. Trustmark incurred $57 thousand of interest expense on long-term FHLB advances in 2013, compared to no interest expense in 2012 and $7 thousand of interest expense in 2011.

	Subordinated Notes Payable

	During 2006, TNB issued $50.0 million aggregate principal amount of Subordinated Notes (the Notes) due December 15, 2016. Proceeds from the sale of the Notes were used for general corporate purposes. At December 31, 2013 and 2012, the carrying amount of the Notes was $49.9 million. The Notes have not been, and are not required to be, registered with the Securities and Exchange Commission (SEC) under the Securities Act of 1933 (Securities Act), as amended. The Notes were sold pursuant to the terms of regulations issued by the OCC and in reliance upon an exemption provided by the Securities Act. The Notes bear interest at the rate of 5.673% per annum from December 13, 2006, until the principal of the Notes has been paid in full. Interest on the Notes is payable semi-annually in arrears on June 15 and December 15 of each year, commencing June 15, 2007, and through the date of maturity. The Notes are unsecured and subordinate and junior in right of payment to TNB’s obligations to its depositors, its obligations under bankers’ acceptances and letters of credit, its obligations to any Federal Reserve Bank or the FDIC and its obligations to its other creditors, and to any rights acquired by the FDIC as a result of loans made by the FDIC to TNB. The Notes, which are not redeemable prior to maturity, qualify as Tier 2 capital for both TNB and Trustmark. Because the Notes now have a remaining maturity of more than two years, but less than three years, only 40% of the remaining balance will qualify as Tier 2 capital for both TNB and Trustmark at December 31, 2013. The portion of the Notes qualifying as Tier 2 capital will be reduced 20% during each of the remaining two years until the Notes mature during 2016.

	Junior Subordinated Debt Securities

	On August 18, 2006, Trustmark completed a private placement of $60.0 million of trust preferred securities through a newly formed Delaware trust affiliate, Trustmark Preferred Capital Trust I, (the Trust). The trust preferred securities mature September 30, 2036, are redeemable at Trustmark’s option and bear interest at a variable rate per annum equal to the three-month LIBOR plus 1.72%. Under applicable regulatory guidelines, these trust preferred securities qualify as Tier 1 capital. The proceeds from the sale of the trust preferred securities were used by the Trust to purchase $61.9 million in aggregate principal amount of Trustmark’s junior subordinated debentures.

	The debentures were issued pursuant to a Junior Subordinated Indenture, dated August 18, 2006, between Trustmark, as issuer, and Wilmington Trust Company, as trustee. Like the trust preferred securities, the debentures bear interest at a variable rate per annum equal to the three-month LIBOR plus 1.72% and mature on September 30, 2036. The debentures may be redeemed at Trustmark’s option at any time. The interest payments by Trustmark will be used to pay the quarterly distributions payable by the Trust to the holder of the trust preferred securities. However, so long as no event of default has occurred under the debentures, Trustmark may defer interest payments on the debentures (in which case the Trust will also defer distributions otherwise due on the trust preferred securities) for up to 20 consecutive quarters.

	The debentures are subordinated to the prior payment of any other indebtedness of Trustmark that, by its terms, is not similarly subordinated. The trust preferred securities are recorded as a long-term liability on Trustmark’s balance sheet; however, for regulatory purposes the trust preferred securities are treated as Tier 1 capital under rulings of the Federal Reserve Board, Trustmark’s primary federal regulatory agency.

	Trustmark also entered into a Guarantee Agreement, dated August 18, 2006, pursuant to which it has agreed to guarantee the payment by the Trust of distributions on the trust preferred securities and the payment of principal of the trust preferred securities when due, either at maturity or on redemption, but only if and to the extent that the Trust fails to pay distributions on or principal of the trust preferred securities after having received interest payments or principal payments on the junior subordinated debentures from Trustmark for the purpose of paying those distributions or the principal amount of the trust preferred securities.

	As defined in applicable accounting standards, the Trust, a wholly-owned subsidiary of Trustmark, is considered a variable interest entity for which Trustmark is not the primary beneficiary. Accordingly, the accounts of the Trust are not included in Trustmark’s consolidated financial statements.

	At December 31, 2013 and 2012, total assets for the Trust totaled $61.9 million, resulting from the investment in junior subordinated debentures issued by Trustmark. Liabilities and shareholder’s equity for the Trust also totaled $61.9 million at December 31, 2013 and 2012, resulting from the issuance of trust preferred securities in the amount of $60.0 million as well as $1.9 million in common securities issued to Trustmark. During 2013, net income for the Trust equaled $37.6 thousand resulting from interest income from the junior subordinated debt securities issued by Trustmark to the Trust, compared with net income of $41.3 thousand during 2012 and $38.1 thousand during 2011. Dividends issued to Trustmark by the Trust during 2013 totaled $37.6 thousand, compared to $41.3 thousand during 2012 and $38.1 thousand during 2011.

Income_Taxes

Income Taxes	12 Months Ended
Income Taxes	Dec. 31, 2013
Income Taxes [Abstract]	'
Income Taxes	'
	Note 14 – Income Taxes

	The income tax provision included in the statements of income is as follows ($ in thousands):

	Current		2013			2012			2011
	Federal		$	14,537		$	48,186		$	46,749
	State			1,237			2,366			4,712
	Deferred
	Federal			18,394			(7,349	)		(8,414	)
	State			2,769			(1,103	)		(1,269	)
	Income tax provision		$	36,937		$	42,100		$	41,778

	The income tax provision differs from the amount computed by applying the statutory federal income tax rate of 35% to income before income taxes as a result of the following ($ in thousands):

			2013			2012			2011
	Income tax computed at statutory tax rate		$	53,899		$	55,784		$	52,017
	Tax exempt interest			(5,222	)		(5,150	)		(5,244	)
	Nondeductible interest expense			121			144			153
	State income taxes, net			2,604			821			2,238
	Income tax credits			(15,755	)		(9,255	)		(7,633	)
	Other			1,290			(244	)		247
	Income tax provision		$	36,937		$	42,100		$	41,778

	Temporary differences between the financial statement carrying amounts and the tax basis of assets and liabilities gave rise to the following net deferred tax assets at December 31, 2013 and 2012, which are included in other assets ($ in thousands):

	Deferred tax assets		2013			2012
	Loan purchase accounting		$	63,048		$	7,020
	Other real estate			47,981			30,001
	Allowance for loan losses			29,102			32,441
	Deferred compensation			20,000			5,055
	Securities			17,741			-
	Realized built in losses			9,182			-
	Pension and other postretirement benefit plans			7,511			32,507
	Non accrual loans			4,452			1,178
	Stock-based compensation			3,357			4,723
	Other			14,771			12,025
	Gross deferred tax asset			217,145			124,950
	Valuation allowance			(16,000	)		-
	Deferred tax asset net of valuation allowance			201,145			124,950

	Deferred tax liabilities
	Goodwill and other identifiable intangibles			29,809			18,707
	Premises and equipment			21,543			17,339
	Mortgage servicing rights			8,145			1,737
	Leases			3,290			-
	Unrealized gains on securities available for sale			1,969			27,834
	Securities			1,270			2,055
	Other			4,642			2,276
	Gross deferred tax liability			70,668			69,948
	Net deferred tax asset		$	130,477		$	55,002

	Trustmark has evaluated the need for a valuation allowance and, based on the weight of the available evidence, has determined that it is more likely than not that a portion of deferred tax assets will not be realized due to limitations on the deductibility of built in losses in future years. A valuation allowance has been established to reduce deferred tax assets to the amount that will more likely than not be realized in future years.

	The following table provides a summary of the changes during the 2013 calendar year in the amount of unrecognized tax benefits that are included in other liabilities in the consolidated balance sheet ($ in thousands):

	Balance at January 1, 2013		$	1,864

	Increases due to tax positions taken during the current year			78
	Decreases due to tax positions taken during a prior year			(8	)
	Decreases due to the lapse of applicable statute of limitations during the current year			(155	)

	Balance at December 31, 2013		$	1,779

Accrued interest, net of federal benefit, at December 31, 2013		$	435

Unrecognized tax benefits that would impact the effective tax rate,if recognized, at December 31, 2013		$	1,173

Interest and penalties related to unrecognized tax benefits, if any, are recorded in income tax expense. With limited exception, Trustmark is no longer subject to U.S. federal, state and local audits by tax authorities for 2007 and earlier tax years. Trustmark does not anticipate a significant change to the total amount of unrecognized tax benefits within the next twelve months.

Defined_Benefit_and_Other_Post

Defined Benefit and Other Postretirement Benefits	12 Months Ended
Defined Benefit and Other Postretirement Benefits	Dec. 31, 2013
Defined Benefit and Other Postretirement Benefits [Abstract]	'
Defined Benefit and Other Postretirement Benefits	'
	Note 15 – Defined Benefit and Other Postretirement Benefits

	Defined Benefit Plans

	Trustmark maintains a noncontributory defined benefit pension plan (Trustmark Capital Accumulation Plan), which covers substantially all associates employed prior to 2007. The plan provides retirement benefits that are based on the length of credited service and final average compensation, as defined in the plan and vest upon three years of service. In an effort to control expenses, the Board voted to freeze plan benefits effective during 2009, with the exception of certain associates covered through plans obtained by acquisitions. Associates will not earn additional benefits, except for interest as required by the IRS regulations, after the effective date. Associates will retain their previously earned pension benefits. As a result of the BancTrust acquisition on February 15, 2013, Trustmark acquired a qualified pension plan (BancTrust Pension Plan), which was frozen prior to the acquisition date. On January 28, 2014, Trustmark's Board of Directors authorized the termination of the BancTrust Pension Plan effective as of April 15, 2014. The Internal Revenue Service (IRS) will be asked to review the BancTrust Pension Plan’s tax qualification at its termination, and a determination request will be submitted to the IRS. The Pension Benefit Guaranty Corporation (PBGC) will also review the BancTrust Pension Plan’s termination. Plan assets of the BancTrust Pension Plan will continue to be held in trust until the termination distributions are made.

	The following tables present information regarding the benefit obligation, plan assets, funded status, amounts recognized in accumulated other comprehensive income (loss), net periodic benefit cost and other statistical disclosures for Trustmark’s plans (Trustmark Capital Accumulation Plan and BancTrust Pension Plan) ($ in thousands):

			2013				2012
	Change in benefit obligation
	Benefit obligation, beginning of year		$	103,235			$	100,556
	Benefit obligation from business combination			43,138				-
	Service cost			595				547
	Interest cost			4,758				3,942
	Actuarial (gain) loss			(8,060	)			4,559
	Benefits paid			(14,692	)			(6,369	)
	Benefit obligation, end of year		$	128,974			$	103,235

	Change in plan assets
	Fair value of plan assets, beginning of year		$	76,660			$	72,304
	Fair value of plan assets from business combination			40,391				-
	Actual return on plan assets			21,661				9,178
	Employer contributions			2,122				1,547
	Benefit payments			(14,692	)			(6,369	)
	Fair value of plan assets, end of year		$	126,142			$	76,660

	Funded status at end of year - net liability		$	(2,832	)		$	(26,575	)

	Amounts recognized in accumulated other comprehensive income (loss)
	Net loss - amount recognized		$	15,436			$	45,178

			Years Ended December 31,
			2013				2012				2011
	Net periodic benefit cost
	Service cost		$	595			$	547			$	522
	Interest cost			4,758				3,942				4,460
	Expected return on plan assets			(7,720	)			(5,983	)			(5,882	)
	Recognized net loss due to settlement			2,225				-				-
	Recognized net actuarial loss			5,516				5,225				4,127
	Net periodic benefit cost		$	5,374			$	3,731			$	3,227

	Other changes in plan assets and benefit obligation recognized in other comprehensive income (loss), before taxes
	Net (gain) loss - Total recognized in other comprehensive income (loss)		$	(29,742	)		$	(3,861	)		$	9,707

	Total recognized in net periodic benefit cost and other comprehensive income (loss)		$	(24,368	)		$	(130	)		$	12,934

	Weighted-average assumptions as of end of year
	Discount rate for benefit obligation			4.3	%			3.5	%			4	%
	Discount rate for net periodic benefit cost			3.5	%			4	%			5.05	%
	Expected long-term return on plan assets			7.5	%			8	%			8	%
	Rate of compensation increase			3	%			3	%			3	%

	In the table above, recognized net loss due to settlement is related to the lump sum settlement of certain benefits in the Trustmark Capital Accumulation Plan in accordance with FASB ASC Topic 715-30, “Defined Benefit Plans - Pension.”

	Plan Assets

	The weighted-average asset allocations by asset category for Trustmark’s plans at December 31, 2013 and 2012 are as follows:

			2013				2012
	Money market fund			5.2	%			1.3	%
	Fixed income mutual funds			17.6	%			19.8	%
	Equity mutual funds			58.4	%			63.2	%
	Equity securities			18.7	%			15.5	%
Fixed income hedge fund			0.1	%			0.2	%
Total			100	%			100	%

The strategic objective of the plans focuses on capital growth with moderate income. The plans are managed on a total return basis with the return objective set as a reasonable actuarial rate of return on plan assets net of investment management fees. Moderate risk is assumed given the average age of plan participants and the need to meet the required rate of return. Equity and fixed income securities are utilized to allow for capital appreciation while fully diversifying the portfolio with more conservative fixed income investments. The target asset allocation range for the portfolio is 0-10% Cash and Cash Equivalents, 10-30% Fixed Income, 30-55% Domestic Equity, 10-30% International Equity and 0-20% Other Investments. Changes in allocations are a result of tactical asset allocation decisions and fall within the aforementioned percentage range for each major asset class.

Trustmark selects the expected long-term rate-of-return-on-assets assumption in consultation with its investment advisors and actuary. This rate is intended to reflect the average rate of earnings expected to be earned on the funds invested or to be invested to provide plan benefits. Historical performance is reviewed, especially with respect to real rates of return (net of inflation), for the major asset classes held or anticipated to be held by the trust and for the trust itself. Undue weight is not given to recent experience that may not continue over the measurement period, with higher significance placed on current forecasts of future long-term economic conditions.

Because assets are held in a qualified trust, anticipated returns are not reduced for taxes. Further, solely for this purpose, the plans are assumed to continue in force and not terminate during the period in which assets are invested. However, consideration is given to the potential impact of current and future investment policy, cash flow into and out of the trust and expenses (both investment and non-investment) typically paid from plan assets (to the extent such expenses are not explicitly estimated within periodic cost).

Fair Value Measurements

At this time, Trustmark presents no fair values that are derived through internal modeling. Should positions requiring fair valuation arise that are not relevant to existing methodologies, Trustmark will make every reasonable effort to obtain market participant assumptions, or independent evaluation.

The following table sets forth by level, within the fair value hierarchy, the plans’ assets measured at fair value at December 31, 2013 and 2012 ($ in thousands):

		31-Dec-13
		Total				Level 1				Level 2				Level 3
Money market fund		$	6,563			$	-			$	6,563			$	-
Fixed income mutual funds			22,225				22,225				-				-
Equity mutual funds			73,608				73,608				-				-
Equity securities			23,583				23,583				-				-
Fixed income hedge fund			163				-				-				163
Total assets at fair value		$	126,142			$	119,416			$	6,563			$	163

		31-Dec-12
		Total				Level 1				Level 2				Level 3
Money market fund		$	1,028			$	-			$	1,028			$	-
Fixed income mutual funds			15,145				15,145				-				-
Equity mutual funds			48,414				48,414				-				-
Equity securities			11,910				11,910				-				-
Fixed income hedge fund			163				-				-				163
Total assets at fair value		$	76,660			$	75,469			$	1,028			$	163

The following table sets forth a summary of changes in fair value of the Level 3 plan assets for the years ended December 31, 2013 and 2012 ($ in thousands):

		Fixed Income Hedge Fund
Balance, January 1, 2012		$	301
Change in fair value during 2012			(138	)
Balance, December 31, 2013 and 2012		$	163

There have been no changes in methodologies used at December 31, 2013. The methodology and significant assumptions used in estimating the fair values presented above are as follows:

	·	Money market fund approximates fair value due to its immediate maturity.
	·	Fixed income hedge fund is valued in accordance with the valuation provided by the general partner of the underlying partnership.

The preceding methods described may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values. Furthermore, although the plans believe their valuation methods are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different fair value measurement at the reporting date.

Contributions

The acceptable range of contributions to the plans is determined each year by the plans’ actuary. Trustmark's policy is to fund amounts allowable for federal income tax purposes. The actual amount of the contribution is determined based on the plans’ funded status and return on plan assets as of the measurement date, which is December 31. In July 2012, the Moving Ahead for Progress in the 21^st Century Act (“MAP-21”) became effective. Through MAP-21, Congress provides pension sponsors with funding relief by stabilizing interest rates used to determine required funding contributions to defined benefit plans. Under MAP-21, instead of using a two-year average of these rates, plan sponsors determine required pension funding contributions based on a 25-year average of these rates with a cap and a floor. For 2013, the cap is set at 115% and the floor is set at 85% of the 25-year average of these rates as of September 30, 2012, whereas for 2012, the cap was set at 110% and the floor was set at 90% of these rates as of September 30, 2011. As a result, for the plan years ended December 31, 2013 and 2012, Trustmark made minimum required contributions to the Trustmark Capital Accumulation Plan of $2.1 million and $1.5 million, respectively. The increase of approximately $600 thousand in 2013 as compared to 2012 is primarily due to the change in MAP-21 interest rates, with the effective interest rate dropping from 6.82% in 2012 to 6.13% in 2013. For the plan year ending December 31, 2014, Trustmark’s minimum required contribution to the Trustmark Capital Accumulation Plan is expected to be $2.0 million; however, Management and the Board of Directors will monitor the plan throughout 2014 to determine any additional funding requirements by the plans’ measurement date. No contributions were required for the BancTrust Pension Plan in 2013 and none are expected in 2014.

Estimated Future Benefit Payments and Other Disclosures

The following table presents the expected benefit payments, which reflect expected future service, for Trustmark’s plans ($ in thousands):

Year		Amount
2014		$	12,220
2015			10,841
2016			9,576
2017			9,555
2018			8,133
2019 - 2023			40,755

Amounts in accumulated other comprehensive income (loss) expected to be recognized as components of net periodic benefit cost during 2014 include a net loss of $4.4 million.

Supplemental Retirement Plans

Trustmark maintains a nonqualified supplemental retirement plan covering directors who elected to defer fees, key executive officers and senior officers. The plan provides for defined death benefits and/or retirement benefits based on a participant's covered salary. Trustmark has acquired life insurance contracts on the participants covered under the plan, which may be used to fund future payments under the plan. The measurement date for the plan is December 31. As a result of the BancTrust acquisition on February 15, 2013, Trustmark acquired a nonqualified supplemental retirement plan, which was frozen prior to the acquisition date. The following tables present information regarding the benefit obligation, plan assets, funded status, amounts recognized in accumulated other comprehensive income (loss), net periodic benefit cost and other statistical disclosures for the Trustmark and BancTrust nonqualified supplemental retirement plans (collectively the "supplemental retirement plans") ($ in thousands):

		December 31,
		2013				2012
Change in benefit obligation
Benefit obligation, beginning of year		$	56,619			$	52,646
Benefit obligation from business combination			1,658				-
Service cost			597				679
Interest cost			1,943				2,067
Actuarial (gain) loss			(4,187	)			3,368
Benefits paid			(4,141	)			(2,339	)
Prior service cost due to amendment			-				198
Benefit obligation, end of year		$	52,489			$	56,619

Change in plan assets
Fair value of plan assets, beginning of year		$	-			$	-
Employer contributions			4,141				2,339
Benefit payments			(4,141	)			(2,339	)
Fair value of plan assets, end of year		$	-			$	-

Funded status at end of year - net liability		$	(52,489	)		$	(56,619	)

Amounts recognized in accumulated other comprehensive income (loss)
Net loss		$	14,509			$	19,733
Prior service cost			2,110				2,360
Amounts recognized		$	16,619			$	22,093

		Years Ended December 31,
		2013				2012				2011
Net periodic benefit cost
Service cost		$	597			$	679			$	589
Interest cost			1,943				2,067				2,276
Amortization of prior service cost			250				250				236
Recognized net actuarial loss			1,038				861				495
Net periodic benefit cost		$	3,828			$	3,857			$	3,596

Other changes in plan assets and benefit obligation recognized in other comprehensive income (loss), before taxes
Net (gain) loss		$	(5,224	)		$	2,507			$	5,336
Prior service cost			-				198				1,192
Amortization of prior service cost			(250	)			(250	)			(236	)
Total recognized in other comprehensive income (loss)		$	(5,474	)		$	2,455			$	6,292
Total recognized in net periodic benefit cost and other comprehensive income (loss)		$	(1,646	)		$	6,312			$	9,888

Weighted-average assumptions as of end of year
Discount rate for benefit obligation			4.3	%			3.5	%			4	%
Discount rate for net periodic benefit cost			3.5	%			4	%			5.05	%

Estimated Supplemental Retirement Plan Payments and Other Disclosures

The following supplemental retirement plans’ benefit payments are expected to be paid in the following years ($ in thousands):

2014		$	2,735
2015			2,940
2016			3,186
2017			3,491
2018			3,592
2019 - 2023			19,004

Amounts in accumulated other comprehensive income (loss) expected to be recognized as components of net periodic benefit cost during 2014 include a loss of $659 thousand and prior service cost of $250 thousand.

Other Benefit Plans

Defined Contribution Plan

Trustmark provides associates with a self-directed 401(k) retirement plan that allows associates to contribute a percentage of base pay, within limits provided by the Internal Revenue Code and accompanying regulations, into the plan. Trustmark's contributions to this plan were $6.8 million in 2013, $5.7 million in 2012 and $5.4 million in 2011.

Stock_and_Incentive_Compensati

Stock and Incentive Compensation Plans	12 Months Ended
Stock and Incentive Compensation Plans	Dec. 31, 2013
Stock and Incentive Compensation Plans [Abstract]	'
Stock and Incentive Compensation Plans	'
	Note 16 – Stock and Incentive Compensation Plans

	Trustmark has granted, and currently has outstanding, stock and incentive compensation awards subject to the provisions of the 1997 Long Term Incentive Plan (the 1997 Plan) and the 2005 Stock and Incentive Compensation Plan (the 2005 Plan). New awards have not been issued under the 1997 Plan since it was replaced by the 2005 Plan.The 2005 Plan is designed to provide flexibility to Trustmark regarding its ability to motivate, attract and retain the services of key associates and directors. The 2005 Plan allows Trustmark to make grants of nonqualified stock options, incentive stock options, stock appreciation rights, restricted stock, restricted stock units and performance units to key associates and directors. At December 31, 2013, the maximum number of shares of Trustmark’s common stock available for issuance under the 2005 Plan was 5,735,706 shares.

	Stock Option Grants

	Stock option awards under the 2005 Plan were granted with an exercise price equal to the market price of Trustmark’s stock on the date of grant. Stock options granted under the 2005 Plan vested equally over five years and had a contractual term of seven years. Stock option awards, which were granted under the 1997 Plan, had an exercise price equal to the market price of Trustmark’s stock on the date of grant, vested equally over four years with a contractual ten-year term. During 2011, compensation expense related to stock options was fully recognized. Compensation expense for stock options granted under these plans was estimated using the fair value of each option granted using the Black-Scholes option-pricing model and was recognized on the straight-line method over the requisite service period. As reflected in the tables below, no stock options have been granted since 2006, when Trustmark began granting restricted stock awards exclusively.

	The following table summarizes Trustmark’s stock option activity for 2013, 2012 and 2011:
			2013								2012								2011
							Average								Average								Average
							Option								Option								Option
	Options		Shares				Price				Shares				Price				Shares				Price
	Outstanding, beginning of year			699,600			$	27.58				1,205,100			$	27.31				1,311,925			$	27.03
	Granted			-				-				-				-				-				-
	Exercised			(187,300	)			26.96				(11,125	)			24.09				(69,525	)			21.68
	Expired			(406,850	)			27.9				(494,375	)			27.01				(36,000	)			27.71
	Forfeited			-				-				-				-				(1,300	)			31.55
	Outstanding, end of year			105,450				27.43				699,600				27.58				1,205,100				27.31

	Exercisable, end of year			105,450				27.43				699,600				27.58				1,205,100				27.31

	Aggregate Intrinsic Value
	Outstanding, end of year		$	-							$	-							$	44,365
	Exercisable, end of year		$	-							$	-							$	44,365

	The total intrinsic value of options exercised was $191 thousand in 2013, $16 thousand in 2012 and $144 thousand in 2011.

	The following table presents information on stock options by ranges of exercise prices at December 31, 2013:
	Options Outstanding																Options Exercisable
									Weighted-				Weighted-								Weighted-				Weighted-
					Outstanding				Average				Average				Exercisable				Average				Average
	Range of				December 31,				Remaining Years				Exercise				December 31,				Remaining Years				Exercise
	Exercise Prices				2013				To Expiration				Price				2013				To Expiration				Price
	$	25.88 - $29.11				99,450				0.3			$	27.31				99,450				0.3			$	27.31
	$	29.11 - $32.35				6,000				0.2				29.38				6,000				0.2				29.38
						105,450				0.3				27.43				105,450				0.3				27.43

	Restricted Stock Grants

	Performance Awards
	Trustmark’s performance awards are granted to Trustmark’s executive and senior management team. Performance awards granted vest based on performance goals of return on average tangible equity (ROATE) and total shareholder return (TSR) compared to a defined peer group. Performance awards are valued utilizing a Monte Carlo simulation model to estimate fair value of the awards at the grant date. The restriction period for performance awards covers a three-year vesting period. These awards are recognized using the straight-line method over the requisite service period. These awards provide for achievement shares if performance measures exceed 100%. Any achievement shares related to the performance awards granted in 2013 vest at the end of the three year performance period. Any achievement shares related to performance awards granted prior to 2013 are restricted for an additional three-year vesting period subsequent to the end of the three-year performance period. The restricted share agreement provides for voting rights and dividend privileges.

	The following table summarizes Trustmark’s performance award activity during years ended December 31, 2013, 2012 and 2011:

			2013								2012								2011
							Weighted-								Weighted-								Weighted-
							Average								Average								Average
							Grant-Date								Grant-Date								Grant-Date
			Shares				Fair Value				Shares				Fair Value				Shares				Fair Value
	Nonvested shares, beginning of year			159,583			$	24.26				179,421			$	20.3				210,797			$	20.3
	Granted			62,119				23.65				55,295				25.66				53,863				25.4
	Released from restriction			(54,784	)			24.15				(72,632	)			21.38				(84,338	)			20
	Forfeited			(6,398	)			25.42				(2,501	)			24.7				(901	)			23.82
	Nonvested shares, end of year			160,520				25.2				159,583				24.26				179,421				20.3

	Time-Vested Awards

	Trustmark’s time-vested awards are granted to Trustmark’s Board of Directors, executive and senior management team. The restriction period for time-vested awards covers a three-year vesting period. Time-vested awards are valued utilizing the fair value of Trustmark’s stock at the grant date. These awards are recognized on the straight-line method over the requisite service period.

	The following table summarizes Trustmark’s time-vested award activity during years ended December 31, 2013, 2012 and 2011:

			2013								2012								2011
						Weighted-								Weighted-								Weighted-
						Average								Average								Average
						Grant-Date								Grant-Date								Grant-Date
		Shares				Fair Value				Shares				Fair Value				Shares				Fair Value
Nonvested shares, beginning of year			317,573			$	23.28				334,356			$	21.04				343,469			$	20.33
Granted			112,964				24.47				141,616				24.66				157,178				24.15
Released from restriction			(122,727	)			24.4				(151,331	)			23.14				(160,447	)			20.46
Forfeited			(16,176	)			25.14				(7,068	)			24.14				(5,844	)			20.17
Nonvested shares, end of year			291,634				24.48				317,573				23.28				334,356				21.04

Performance-Based Restricted Stock Unit Award

During 2009, Trustmark’s previous Chairman and CEO was granted a cash-settled performance-based restricted stock unit award (the RSU award) with each unit having the value of one share of Trustmark’s common stock. The performance period covered a two-year period. This award was granted in connection with an employment agreement dated November 20, 2008, that provides for in lieu of receiving an equity compensation award in 2010 or 2011, the 2009 equity compensation award to be twice the amount of a normal award, with one-half of the award being performance-based and one-half service-based. The RSU award was granted outside of the 2005 Plan in lieu of granting shares of performance-based restricted stock that would exceed the annual limit permitted to be granted under the 2005 Plan, in order to satisfy the equity compensation provisions of the employment agreement. This award provided for excess shares, if performance goals of ROATE and TSR exceeded 100%. Both the performance awards and excess shares vested during 2011. Compensation expense for the RSU award was based on the approximate fair value of Trustmark’s stock at the end of each of the reporting periods and was finalized on the vesting date at a share price of $23.65.

The following table presents information regarding compensation expense for all stock and incentive plans for the periods presented ($ in thousands):

																		Weighted
																		Average Life
		Recognized Compensation Expense												Unrecognized				of Unrecognized
		for Years Ended December 31,												Compensation				Compensation
		2013				2012				2011				Expense				Expense

Stock option-based awards		$	-			$	-			$	100			$	-				-
Performance awards			825				868				855				955				1.7
Time-vested awards			2,774				3,105				2,835				3,102				1.8
RSU award			-				-				184				-				-
Total stock and incentive plan compensation expense		$	3,599			$	3,973			$	3,974			$	4,057

Commitments_and_Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2013
Commitments and Contingencies [Abstract]	'
Commitments and Contingencies	'
	Note 17 – Commitments and Contingencies

	Lending Related

	Trustmark makes commitments to extend credit and issues standby and commercial letters of credit (letters of credit) in the normal course of business in order to fulfill the financing needs of its customers. The carrying amount of commitments to extend credit and letters of credit approximates the fair value of such financial instruments. These amounts are not material to Trustmark’s financial statements.

	Commitments to extend credit are agreements to lend money to customers pursuant to certain specified conditions. Commitments generally have fixed expiration dates or other termination clauses. Because many of these commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. The exposure to credit loss in the event of nonperformance by the other party to the commitments to extend credit is represented by the contract amount of those instruments. Trustmark applies the same credit policies and standards as it does in the lending process when making these commitments. The collateral obtained is based upon the assessed creditworthiness of the borrower. At December 31, 2013 and 2012, Trustmark had unused commitments to extend credit of $2.193 billion and $1.909 billion, respectively.

	Letters of credit are conditional commitments issued by Trustmark to insure the performance of a customer to a third party. A financial standby letter of credit irrevocably obligates Trustmark to pay a third-party beneficiary when a customer fails to repay an outstanding loan or debt instrument. A performance standby letter of credit irrevocably obligates Trustmark to pay a third-party beneficiary when a customer fails to perform some contractual, nonfinancial obligation. When issuing letters of credit, Trustmark uses essentially the same policies regarding credit risk and collateral, which are followed in the lending process. At December 31, 2013 and 2012, Trustmark’s maximum exposure to credit loss in the event of nonperformance by the other party for letters of credit was $143.2 million and $140.5 million, respectively. These amounts consist primarily of commitments with maturities of less than three years, which have an immaterial carrying value. Trustmark holds collateral to support standby letters of credit when deemed necessary. As of December 31, 2013, the fair value of collateral held was $35.9 million.

	Lease Commitments

	Trustmark currently has operating lease commitments for banking premises and equipment, which expire from 2014 to 2029. It is expected that certain leases will be renewed, or equipment replaced, as leases expire. Rental expense totaled $8.4 million in 2013, $7.4 million in 2012 and $7.5 million in 2011. At December 31, 2013, future minimum rental commitments under noncancellable operating leases are as follows ($ in thousands):

	Year	Amount
	2014	$	6,787
	2015		5,503
	2016		3,340
	2017		2,914
	2018		2,629
	Thereafter		9,445
	Total	$	30,618

	Legal Proceedings

	Trustmark’s wholly-owned subsidiary, TNB, has been named as a defendant in two lawsuits related to the collapse of the Stanford Financial Group. The first is a purported class action complaint that was filed on August 23, 2009 in the District Court of Harris County, Texas, by Peggy Roif Rotstain, Guthrie Abbott, Catherine Burnell, Steven Queyrouze, Jaime Alexis Arroyo Bornstein and Juan C. Olano, on behalf of themselves and all others similarly situated, naming TNB and four other financial institutions unaffiliated with Trustmark as defendants. The complaint seeks to recover (i) alleged fraudulent transfers from each of the defendants in the amount of fees and other monies received by each defendant from entities controlled by R. Allen Stanford (collectively, the “Stanford Financial Group”) and (ii) damages allegedly attributable to alleged conspiracies by one or more of the defendants with the Stanford Financial Group to commit fraud and/or aid and abet fraud on the asserted grounds that defendants knew or should have known the Stanford Financial Group was conducting an illegal and fraudulent scheme. Plaintiffs have demanded a jury trial. Plaintiffs did not quantify damages. In November 2009, the lawsuit was removed to federal court by certain defendants and then transferred by the United States Panel on Multidistrict Litigation to federal court in the Northern District of Texas (Dallas) where multiple Stanford related matters are being consolidated for pre-trial proceedings. In May 2010, all defendants (including TNB) filed motions to dismiss the lawsuit, and the motions to dismiss have been fully briefed by all parties. The court has not yet ruled on the defendants’ motions to dismiss. In August 2010, the court authorized and approved the formation of an Official Stanford Investors Committee (“OSIC”) to represent the interests of Stanford investors and, under certain circumstances, to file legal actions for the benefit of Stanford investors. In December 2011, the OSIC filed a motion to intervene in this action. In September 2012, the district court referred the case to a magistrate judge for hearing and determination of certain pretrial issues. In December 2012, the court granted the OSIC’s motion to intervene, and the OSIC filed an Intervenor Complaint against one of the other defendant financial institutions. In February 2013, the OSIC filed an additional Intervenor Complaint that asserts claims against TNB and the remaining defendant financial institutions. The OSIC seeks to recover: (i) alleged fraudulent transfers in the amount of the fees each of the defendants allegedly received from Stanford Financial Group, the profits each of the defendants allegedly made from Stanford Financial Group deposits, and other monies each of the defendants allegedly received from Stanford Financial Group; (ii) damages attributable to alleged conspiracies by each of the defendants with the Stanford Financial Group to commit fraud and/or aid and abet fraud and conversion on the asserted grounds that the defendants knew or should have known the Stanford Financial Group was conducting an illegal and fraudulent scheme; and (iii) punitive damages. The OSIC did not quantify damages. In July 2013, all defendants (including TNB) filed motions to dismiss the OSIC’s claims. The court has not yet ruled on the defendants’ motions to dismiss the OSIC’s claims.

	The second Stanford-related lawsuit was filed on December 14, 2009 in the District Court of Ascension Parish, Louisiana, individually by Harold Jackson, Paul Blaine, Carolyn Bass Smith, Christine Nichols, and Ronald and Ramona Hebert naming TNB (misnamed as Trust National Bank) and other individuals and entities not affiliated with Trustmark as defendants. The complaint seeks to recover the money lost by these individual plaintiffs as a result of the collapse of the Stanford Financial Group (in addition to other damages) under various theories and causes of action, including negligence, breach of contract, breach of fiduciary duty, negligent misrepresentation, detrimental reliance, conspiracy, and violation of Louisiana’s uniform fiduciary, securities, and racketeering laws. The complaint does not quantify the amount of money the plaintiffs seek to recover. In January 2010, the lawsuit was removed to federal court by certain defendants and then transferred by the United States Panel on Multidistrict Litigation to federal court in the Northern District of Texas (Dallas) where multiple Stanford related matters are being consolidated for pre-trial proceedings. On March 29, 2010, the court stayed the case. TNB filed a motion to lift the stay, which was denied on February 28, 2012. In September 2012, the district court referred the case to a magistrate judge for hearing and determination of certain pretrial issues.

	TNB’s relationship with the Stanford Financial Group began as a result of Trustmark’s acquisition of a Houston-based bank in August 2006, and consisted of correspondent banking and other traditional banking services in the ordinary course of business. Both Stanford-related lawsuits are in their preliminary stages and have been previously disclosed by Trustmark.

	TNB is the defendant in two putative class actions challenging TNB’s practices regarding "overdraft" or "non-sufficient funds" fees charged by TNB in connection with customer use of debit cards, including TNB’s order of processing transactions, notices and calculations of charges, and calculations of fees. Kathy D. White v. TNB was filed in Tennessee state court in Memphis, Tennessee and was removed on June 19, 2012 to the United States District Court for the Western District of Tennessee. (Plaintiff Kathy White had filed an earlier, virtually identical action that was voluntarily dismissed.) Leroy Jenkins v. TNB was filed on June 4, 2012 in the United States District Court for the Southern District of Mississippi. The White and Jenkins pleadings are matters of public record in the files of the courts. In both cases, the plaintiffs purport to represent classes of similarly-situated customers of TNB. The White complaint asserts claims of breach of contract, breach of a duty of good faith and fair dealing, unconscionability, conversion, and unjust enrichment. The Jenkins complaint originally included similar allegations as well as federal-law claims under the Electronic Funds Transfer Act (EFTA) and RICO; however, the RICO claims were voluntarily dismissed from the case on January 9, 2013. Each of these complaints seeks the imposition of a constructive trust and unquantified damages. These complaints were largely patterned after similar lawsuits that have been filed against other banks across the country. On July 19, 2012, the plaintiff in the White case filed an amended complaint to add plaintiffs from Mississippi and also to add federal EFTA claims. Trustmark contends that amended complaint was procedurally improper. On October 4, 2012, the plaintiff in the White case moved for leave to add two Tennessee plaintiffs. Trustmark filed preliminary dismissal and venue transfer motions, and discovery proceeded, in the White case; the Jenkins case also involved active discovery. Trustmark also filed a motion to dismiss all claims except the EFTA claim in the Jenkins case. All of these motions remained pending when the parties engaged in active settlement negotiations under the Mississippi federal court’s supervision in June of 2013.

	On August 18, 2013, the class action plaintiffs in both cases and Trustmark agreed to a settlement, the terms and conditions of which are set forth in an executed Settlement Agreement and Release (the “Settlement”). The Settlement is a matter of public record in the court file in the Leroy Jenkins case referenced above. The parties reached the Settlement through arm’s-length negotiations following two court-ordered settlement conferences with United States Magistrate Judge F. Keith Ball. Under the Settlement, subject to the terms and conditions therein and subject to court approval, and without admission of liability, fault or wrongdoing by Trustmark, plaintiffs and a settlement class consisting of TNB account holders whose accounts met certain criteria with respect to overdraft and non-sufficient funds fees between September 28, 2005 and the date of the court’s preliminary approval of the Settlement (the “Settlement Class”) would fully, finally, and forever resolve, discharge, and release their claims in exchange for Trustmark’s payment of $4.0 million, inclusive of all attorneys’ fees and costs, to create a common fund to benefit the Settlement Class. In addition, Trustmark has agreed to adhere to its current method of time-ordered posting for non-recurring point of sale and ATM debit transactions for two years following the effective date of the Settlement, and to pay all fees and costs associated with providing notice to the Settlement Class and for implementation of the Settlement by the Settlement Administrator.

	In an order dated October 11, 2013, the United States District Court for the Southern District of Mississippi preliminarily approved the Settlement. The court will hold a hearing on March 25, 2014 to determine whether to issue final approval of the Settlement. As is common in class action settlements, notice has been provided to members of the Settlement Class, who will be given the option of opting out of the Settlement or objecting to the Settlement. Pursuant to court approval, a professional settlement administrator has been engaged to provide notices to class members and to facilitate apportionment of the Settlement funds among class members.

	The Settlement of $4.0 million, or $2.5 million net of taxes, was included in other noninterest expense for the quarter ended June 30, 2013. Trustmark deposited the $4.0 million into the Settlement Administrator’s escrow account on October 25, 2013.

	Trustmark and its subsidiaries are also parties to other lawsuits and other claims that arise in the ordinary course of business. Some of the lawsuits assert claims related to the lending, collection, servicing, investment, trust and other business activities, and some of the lawsuits allege substantial claims for damages.

	All pending legal proceedings described above are being vigorously contested. In the regular course of business, Management evaluates estimated losses or costs related to litigation, and provision is made for anticipated losses whenever Management believes that such losses are probable and can be reasonably estimated. At the present time, Management believes, based on the advice of legal counsel and Management’s evaluation, that (i) the final resolution of pending legal proceedings described above will not, individually or in the aggregate, have a material impact on Trustmark’s consolidated financial position or results of operations and (ii) a loss in any such case is not probable at this time, and thus no accrual is required under FASB ASC Topic 450-20, “Loss Contingencies.” In addition, given the preliminary nature of these matters and the lack of any quantification by plaintiffs of the relief being sought, to the extent that a loss in any such matter may be viewed as reasonably possible under FASB ASC Topic 450-20, it is not possible at this time to provide an estimate of any such possible loss (or range of possible loss) for any such matter.

Shareholders_Equity

Shareholders' Equity	12 Months Ended
Shareholders' Equity	Dec. 31, 2013
Shareholders' Equity [Abstract]	'
Shareholders' Equity	'
	Note 18 – Shareholders' Equity

	Regulatory Capital

	Trustmark and TNB are subject to minimum capital requirements, which are administered by the federal bank regulatory agencies. These capital requirements, as defined by federal regulations, involve quantitative and qualitative measures of assets, liabilities and certain off-balance sheet instruments. Failure to meet minimum capital requirements can result in certain mandatory and possibly additional discretionary actions by regulators that, if undertaken, could have a direct material effect on the financial statements of Trustmark and TNB. As of December 31, 2013, Trustmark and TNB have exceeded all of the minimum capital standards for the parent company and its primary banking subsidiary as established by regulatory requirements. In addition, TNB has met applicable regulatory guidelines to be considered well-capitalized at December 31, 2013. To be categorized in this manner, TNB must maintain minimum total risk-based capital, Tier 1 risk-based capital and Tier 1 leverage ratios as set forth in the accompanying table. There are no significant conditions or events that have occurred since December 31, 2013, which Management believes have affected Trustmark’s and TNB's present classification.

	Trustmark's and TNB's actual regulatory capital amounts and ratios are presented in the table below ($ in thousands):

																		Minimum Regulatory
			Actual								Minimum Regulatory							Provision to be
			Regulatory Capital								Capital Required							Well-Capitalized
			Amount				Ratio				Amount				Ratio			Amount			Ratio
	At December 31, 2013:
	Total Capital (to Risk Weighted Assets)
	Trustmark Corporation		$	1,122,904				14.18	%		$	633,310				8	%		n/	a		n/	a
	Trustmark National Bank			1,076,391				13.74	%			626,672				8	%	$	783,340			10	%

	Tier 1 Capital (to Risk Weighted Assets)
	Trustmark Corporation		$	1,026,858				12.97	%		$	316,655				4	%		n/	a		n/	a
	Trustmark National Bank			982,925				12.55	%			313,336				4	%	$	470,004			6	%

	Tier 1 Capital (to Average Assets)
	Trustmark Corporation		$	1,026,858				9.06	%		$	340,115				3	%		n/	a		n/	a
	Trustmark National Bank			982,925				8.76	%			336,499				3	%	$	560,831			5	%

	At December 31, 2012:
	Total Capital (to Risk Weighted Assets)
	Trustmark Corporation		$	1,157,838				17.22	%		$	537,861				8	%		n/	a		n/	a
	Trustmark National Bank			1,119,438				16.85	%			531,577				8	%	$	664,472			10	%

	Tier 1 Capital (to Risk Weighted Assets)
	Trustmark Corporation		$	1,043,865				15.53	%		$	268,930				4	%		n/	a		n/	a
	Trustmark National Bank			1,007,775				15.17	%			265,789				4	%	$	398,683			6	%

	Tier 1 Capital (to Average Assets)
	Trustmark Corporation		$	1,043,865				10.97	%		$	285,556				3	%		n/	a		n/	a
	Trustmark National Bank			1,007,775				10.72	%			281,984				3	%	$	469,974			5	%

	Dividends on Common Stock

	Dividends paid by Trustmark are substantially funded from dividends received from TNB. Approval by TNB's regulators is required if the total of all dividends declared in any calendar year exceeds the total of its net income for that year combined with its retained net income of the preceding two years. TNB will have available in 2014 approximately $99.4 million plus its net income for that year to pay as dividends.

	Accumulated Other Comprehensive Income (Loss)

	The following table presents the components of accumulated other comprehensive income (loss) and the related tax effects allocated to each component for the years ended December 31, 2013, 2012 and 2011 ($ in thousands). Reclassification adjustments related to securities available for sale are included in securities gains, net in the accompanying consolidated statements of income. The amortization of prior service cost and recognized net actuarial loss on pension and other postretirement benefit plans are included in the computation of net periodic benefit cost (see Note 15 – Defined Benefit and Other Postretirement Benefits for additional details).

			Before Tax				Tax (Expense)				Net of Tax
			Amount				Benefit				Amount
	Year Ended December 31, 2013:
	Securities available for sale and transferred securities:
	Unrealized holding losses arising during the period		$	(67,135	)		$	25,679			$	(41,456	)
	Net unrealized holding loss on securities transferred to held to maturity			(46,383	)			17,741				(28,642	)
	Reclassification adjustment for net gains realized in net income			(485	)			186				(299	)
	Total securities available for sale and transferred securities			(114,003	)			43,606				(70,397	)
	Pension and other postretirement benefit plans:
	Net change in prior service costs			251				(96	)			155
	Recognized net loss due to settlement			2,225				(851	)			1,374
	Recognized net actuarial loss			32,742				(12,524	)			20,218
	Total pension and other postretirement benefit plans			35,218				(13,471	)			21,747
	Derivatives:
	Change in accumulated gain on effective cash flow hedge derivatives			2,468				(944	)			1,524
	Total other comprehensive loss		$	(76,317	)		$	29,191			$	(47,126	)

Year Ended December 31, 2012:
Securities available for sale:
Unrealized holding gains arising during the period		$	97			$	(37	)		$	60
Reclassification adjustment for net gains realized in net income			(1,059	)			405				(654	)
Total securities available for sale			(962	)			368				(594	)
Pension and other postretirement benefit plans:
Net change in prior service costs			52				(20	)			32
Recognized net actuarial loss			1,354				(518	)			836
Total pension and other postretirement benefit plans			1,406				(538	)			868
Total other comprehensive income		$	444			$	(170	)		$	274

Year Ended December 31, 2011:
Securities available for sale:
Unrealized holding gains arising during the period		$	39,636			$	(15,161	)		$	24,475
Reclassification adjustment for net gains realized in net income			(80	)			31				(49	)
Total securities available for sale			39,556				(15,130	)			24,426
Pension and other postretirement benefit plans:
Net change in prior service costs			(957	)			366				(591	)
Recognized net actuarial gain			(15,041	)			5,753				(9,288	)
Total pension and other postretirement benefit plans			(15,998	)			6,119				(9,879	)
Total other comprehensive income		$	23,558			$	(9,011	)		$	14,547

The following table presents the changes in the balances of each component of accumulated other comprehensive (loss) income for the years ended December 31, 2013, 2012 and 2011 ($ in thousands). All amounts are presented net of tax.

		Securities				Defined				Gains on Cash				Total
		Available for Sale				Benefit				Flow Hedge
		and Transferred				Pension Items
		Securities
Balance at January 1, 2011		$	21,103			$	(32,529	)		$	-			$	(11,426	)
Other comprehensive income before reclassification			24,475				(9,879	)			-				14,596
Amounts reclassified from accumulated other comprehensive income			(49	)			-				-				(49	)
Net other comprehensive income (loss)			24,426				(9,879	)			-				14,547
Balance at December 31, 2011			45,529				(42,408	)			-				3,121
Other comprehensive income before reclassification			60				868				-				928
Amounts reclassified from accumulated other comprehensive income			(654	)			-				-				(654	)
Net other comprehensive (loss) income			(594	)			868				-				274
Balance at December 31, 2012			44,935				(41,540	)			-				3,395
Other comprehensive income before reclassification			(70,098	)			21,747				1,524				(46,827	)
Amounts reclassified from accumulated other comprehensive income			(299	)			-				-				(299	)
Net other comprehensive (loss) income			(70,397	)			21,747				1,524				(47,126	)
Balance at December 31, 2013		$	(25,462	)		$	(19,793	)		$	1,524			$	(43,731	)

Fair_Value

Fair Value	12 Months Ended
Fair Value	Dec. 31, 2013
Fair Value [Abstract]	'
Fair Value	'
	Note 19 – Fair Value

	Financial Instruments Measured at Fair Value

	The methodologies Trustmark uses in determining the fair values are based primarily on the use of independent, market-based data to reflect a value that would be reasonably expected upon exchange of the position in an orderly transaction between market participants at the measurement date. The large majority of assets that are stated at fair value are of a nature that can be valued using prices or inputs that are readily observable through a variety of independent data providers. The providers selected by Trustmark for fair valuation data are widely recognized and accepted vendors whose evaluations support the pricing functions of financial institutions, investment and mutual funds, and portfolio managers. Trustmark has documented and evaluated the pricing methodologies used by the vendors and maintains internal processes that regularly test valuations for anomalies.

	Trustmark utilizes an independent pricing service to advise it on the carrying value of the securities available for sale portfolio. As part of Trustmark’s procedures, the price provided from the service is evaluated for reasonableness given market changes. When a questionable price exists, Trustmark investigates further to determine if the price is valid. If needed, other market participants may be utilized to determine the correct fair value. Trustmark has also reviewed and confirmed its determinations in thorough discussions with the pricing source regarding their methods of price discovery.

	Mortgage loan commitments are valued based on the securities prices of similar collateral, term, rate and delivery for which the loan is eligible to deliver in place of the particular security. Trustmark acquires a broad array of mortgage security prices that are supplied by a market data vendor, which in turn accumulates prices from a broad list of securities dealers. Prices are processed through a mortgage pipeline management system that accumulates and segregates all loan commitment and forward-sale transactions according to the similarity of various characteristics (maturity, term, rate, and collateral). Prices are matched to those positions that are deemed to be an eligible substitute or offset (i.e., “deliverable”) for a corresponding security observed in the market place.

	Trustmark estimates fair value of MSR through the use of prevailing market participant assumptions and market participant valuation processes. This valuation is periodically tested and validated against other third-party firm valuations.

	Trustmark obtains the fair value of interest rate swaps from a third-party pricing service that uses an industry standard discounted cash flow methodology. In addition, credit valuation adjustments are incorporated in the fair values to account for potential nonperformance risk. In adjusting the fair value of its interest rate swap contracts for the effect of nonperformance risk, Trustmark has considered any applicable credit enhancements such as collateral postings, thresholds, mutual puts, and guarantees. In conjunction with the FASB’s fair value measurement guidance, Trustmark made an accounting policy election to measure the credit risk of these derivative financial instruments, which are subject to master netting agreements, on a net basis by counterparty portfolio.

	Trustmark has determined that the majority of the inputs used to value its interest rate swaps offered to qualified commercial borrowers fall within Level 2 of the fair value hierarchy, while the credit valuation adjustments associated with these derivatives utilize Level 3 inputs, such as estimates of current credit spreads. Trustmark has assessed the significance of the impact of the credit valuation adjustments on the overall valuation of its interest rate swaps and has determined that the credit valuation adjustment is not significant to the overall valuation of these derivatives. As a result, Trustmark classifies its interest rate swap valuations in Level 2 of the fair value hierarchy.

	Trustmark also utilizes exchange-traded derivative instruments such as Treasury note futures contracts and option contracts to achieve a fair value return that offsets the changes in fair value of MSR attributable to interest rates. Fair values of these derivative instruments are determined from quoted prices in active markets for identical assets therefore allowing them to be classified within Level 1 of the fair value hierarchy. In addition, Trustmark utilizes derivative instruments such as interest rate lock commitments in its mortgage banking area which lack observable inputs for valuation purposes resulting in their inclusion in Level 3 of the fair value hierarchy.

	At this time, Trustmark presents no fair values that are derived through internal modeling. Should positions requiring fair valuation arise that are not relevant to existing methodologies, Trustmark will make every reasonable effort to obtain market participant assumptions, or independent evaluation.

	Financial Assets and Liabilities

	The following table summarizes financial assets and financial liabilities measured at fair value on a recurring basis as of December 31, 2013 and 2012, segregated by the level of valuation inputs within the fair value hierarchy utilized to measure fair value ($ in thousands). There were no transfers between fair value levels for the years ended December 31, 2013 and 2012.

			31-Dec-13
			Total			Level 1				Level 2			Level 3
	U.S. Treasury securities		$	502		$	-			$	502		$	-
	U.S. Government agency obligations			169,472			-				169,472			-
	Obligations of states and political subdivisions			171,738			-				171,738			-
	Mortgage-backed securities			1,788,505			-				1,788,505			-
	Asset-backed securities and structured financial products			63,937			-				63,937			-
	Securities available for sale			2,194,154			-				2,194,154			-
	Loans held for sale			149,169			-				149,169			-
	Mortgage servicing rights			67,834			-				-			67,834
	Other assets - derivatives			4,994			(2,579	)			7,447			126
	Other liabilities - derivatives			3,298			581				2,717			-

			31-Dec-12
			Total			Level 1				Level 2			Level 3
	U.S. Government agency obligations		$	105,745		$	-			$	105,745		$	-
	Obligations of states and political subdivisions			215,761			-				215,761			-
	Mortgage-backed securities			2,094,612			-				2,094,612			-
	Asset-backed securities and structured financial products			241,627			-				241,627			-
	Securities available for sale			2,657,745			-				2,657,745			-
	Loans held for sale			257,986			-				257,986			-
	Mortgage servicing rights			47,341			-				-			47,341
	Other assets - derivatives			7,107			(440	)			5,263			2,284
	Other liabilities - derivatives			6,612			545				6,067			-

	The changes in Level 3 assets measured at fair value on a recurring basis for the years ended December 31, 2013 and 2012 are summarized as follows ($ in thousands):

			MSR			Other Assets - Derivatives
	Balance, January 1, 2013		$	47,341		$	2,284
	Total net gains included in Mortgage banking, net (1)			2,012			7,754
	Additions			18,481			-
	Sales			-			(9,912	)
	Balance, December 31, 2013		$	67,834		$	126

	The amount of total gains for the period included in		$	11,818		$	735
	earnings that are attributable to the change in unrealized
	gains or losses still held at December 31, 2013


Balance, January 1, 2012		$	43,274		$	702
Total net (losses) gains included in Mortgage banking, net (1)			(19,186	)		13,441
Additions			23,253			-
Sales			-			(11,859	)
Balance, December 31, 2012		$	47,341		$	2,284

The amount of total (losses) gains for the period included in		$	(9,378	)	$	2,317
earnings that are attributable to the change in unrealized
gains or losses still held at December 31, 2012

-1	Total net (losses) gains included in Mortgage banking, net relating to MSR includes changes in fair value due to market changes and due to runoff.

Trustmark may be required, from time to time, to measure certain assets at fair value on a nonrecurring basis in accordance with GAAP. Assets at December 31, 2013, which have been measured at fair value on a nonrecurring basis, include impaired LHFI. Loans for which it is probable Trustmark will be unable to collect the scheduled payments of principal or interest when due according to the contractual terms of the loan agreement are considered impaired. Impaired LHFI have been determined to be collateral dependent and assessed using a fair value approach. Specific allowances for impaired LHFI are based on comparisons of the recorded carrying values of the loans to the present value of the estimated cash flows of these loans at each loan’s original effective interest rate, the fair value of the collateral or the observable market prices of the loans. Fair value estimates begin with appraised values based on the current market value/as-is value of the property being appraised, normally from recently received and reviewed appraisals. Appraisals are obtained from state-certified appraisers and are based on certain assumptions, which may include construction or development status and the highest and best use of the property. These appraisals are reviewed by Trustmark’s Appraisal Review Department to ensure they are acceptable. Appraised values are adjusted down for costs associated with asset disposal. At December 31, 2013, Trustmark had outstanding balances of $31.6 million in impaired LHFI that were specifically identified for evaluation and written down to fair value of the underlying collateral less cost to sell based on the fair value of the collateral or other unobservable input compared with $40.6 million at December 31, 2012. These specifically evaluated impaired LHFI are classified as Level 3 in the fair value hierarchy. Impaired LHFI are periodically reviewed and evaluated for additional impairment and adjusted accordingly based on the same factors identified above.

Please refer to Note 2 – Business Combinations, for financial assets and liabilities acquired, which were measured at fair value on a nonrecurring basis in accordance with GAAP.

Nonfinancial Assets and Liabilities

Certain nonfinancial assets measured at fair value on a nonrecurring basis include foreclosed assets (upon initial recognition or subsequent impairment), nonfinancial assets and nonfinancial liabilities measured at fair value in the second step of a goodwill impairment test, and intangible assets and other nonfinancial long-lived assets measured at fair value for impairment assessment.

Other real estate, excluding covered other real estate, includes assets that have been acquired in satisfaction of debt through foreclosure and is recorded at the lower of cost or estimated fair value less the estimated cost of disposition. Fair value is based on independent appraisals and other relevant factors. In the determination of fair value subsequent to foreclosure, Management also considers other factors or recent developments, such as changes in market conditions from the time of valuation and anticipated sales values considering plans for disposition, which could result in an adjustment to lower the collateral value estimates indicated in the appraisals. At December 31, 2013, Trustmark's geographic other real estate distribution was concentrated primarily in its five key market regions: Alabama, Florida, Mississippi, Tennessee and Texas. The ultimate recovery of a substantial portion of the carrying amount of other real estate, excluding covered other real estate, is susceptible to changes in market conditions in these areas. Periodic revaluations are classified as Level 3 in the fair value hierarchy since assumptions are used that may not be observable in the market.

Certain foreclosed assets, upon initial recognition, are remeasured and reported at fair value through a charge-off to the allowance for loan losses based upon the fair value of the foreclosed asset. The fair value of a foreclosed asset, upon initial recognition, is estimated using Level 3 inputs based on adjusted observable market data. Foreclosed assets measured at fair value upon initial recognition totaled $80.3 million (utilizing Level 3 valuation inputs) during the year ended December 31, 2013 compared with $38.9 million for the same period in 2012. Foreclosed assets measured at fair value upon initial recognition for the years ended December 31, 2013 and 2012, included $40.1 million of other real estate acquired from BancTrust and $2.6 million of other real estate acquired from Bay Bank, respectively. In connection with the measurement and initial recognition of the foregoing foreclosed assets, Trustmark recognized charge-offs of the allowance for loan losses totaling $11.4 million and $9.0 million for 2013 and 2012, respectively. Other than foreclosed assets measured at fair value upon initial recognition, $47.4 million of foreclosed assets were remeasured during 2013, requiring write-downs of $5.7 million to reach their current fair values compared to $38.0 million of foreclosed assets were remeasured during 2012, requiring write-downs of $6.6 million.

Fair Value of Financial Instruments

The carrying amounts and estimated fair values of financial instruments at December 31, 2013 and 2012, are as follows ($ in thousands):

		2013							2012
		Carrying			Estimated				Carrying			Estimated
		Value			Fair Value				Value			Fair Value
Financial Assets:
Level 2 Inputs:
Cash and short-term investments		$	353,014		$	353,014			$	238,535		$	238,535
Securities held to maturity			1,168,728			1,150,833				42,188			46,888
Level 3 Inputs:
Net LHFI			5,732,433			5,787,408				5,514,016			5,619,933
Net acquired loans			794,570			794,570				127,489			127,489
FDIC indemnification asset			14,347			14,347				21,774			21,774

Financial Liabilities:
Level 2 Inputs:
Deposits			9,859,902			9,866,118				7,896,517			7,904,179
Short-term liabilities			317,972			317,972				375,749			375,749
Long-term FHLB advances			8,458			8,474				-			-
Subordinated notes			49,904			53,387				49,871			53,980
Junior subordinated debt securities			61,856			40,206				61,856			40,206

FASB ASC Topic 825, “Financial Instruments,” requires disclosure of the fair value of financial assets and financial liabilities, including those financial assets and financial liabilities that are not measured and reported at fair value on a recurring basis or non-recurring basis. The methodology and significant assumptions used in estimating the fair values presented above are as follows:

In cases where quoted market prices are not available, fair values are generally based on estimates using present value techniques. Trustmark’s premise in present value techniques is to represent the fair values on a basis of replacement value of the existing instrument given observed market rates on the measurement date. These techniques are significantly affected by the assumptions used, including the discount rate and estimates of future cash flows. In that regard, the derived fair value estimates for those assets or liabilities cannot be necessarily substantiated by comparison to independent markets and, in many cases, may not be realizable in immediate settlement of the instruments. The estimated fair value of financial instruments with immediate and shorter-term maturities (generally 90 days or less) is assumed to be the same as the recorded book value. All nonfinancial instruments, by definition, have been excluded from these disclosure requirements. Accordingly, the aggregate fair value amounts presented do not represent the underlying value of Trustmark.

Cash and Short-Term Investments

The carrying amounts for cash and due from banks and short-term investments (federal funds sold and securities purchased under reverse repurchase agreements) approximate fair values due to their immediate and shorter-term maturities.

Securities Held to Maturity

Estimated fair values for securities held to maturity are based on quoted market prices where available. If quoted market prices are not available, estimated fair values are based on quoted market prices of comparable instruments.

Net LHFI

The fair values of net LHFI are estimated for portfolios of loans with similar financial characteristics. For variable rate LHFI that reprice frequently with no significant change in credit risk, fair values are based on carrying values. The fair values of certain mortgage LHFI, such as 1-4 family residential properties, are based on quoted market prices of similar loans sold in conjunction with securitization transactions, adjusted for differences in loan characteristics. The fair values of other types of LHFI are estimated by discounting the future cash flows using the current rates at which similar loans would be made to borrowers with similar credit ratings and for the same remaining maturities. The processes for estimating the fair value of net LHFI described above do not represent an exit price under FASB ASC Topic 820 and such an exit price could potentially produce a different fair value estimate at December 31, 2013 and 2012.

Net Acquired Loans

The fair value of net acquired loans is based on estimates of future loan cash flows and appropriate discount rates, which incorporate Trustmark’s assumptions about market funding cost and liquidity premium. The estimates of future loan cash flows are determined using Trustmark’s assumptions concerning the amount and timing of principal and interest payments, prepayments and credit losses.

FDIC Indemnification Asset

The fair value of the FDIC indemnification asset is estimated by discounting estimated future cash flows based on market rates observed at the time of acquisition.

Deposits

The fair values of deposits with no stated maturity, such as noninterest-bearing demand deposits, NOW accounts, MMDA products and savings accounts are, by definition, equal to the amount payable on demand, which is the carrying value. Fair values for certificates of deposit are based on the discounted value of contractual cash flows. The discount rate is estimated using the rates currently offered for deposits with similar remaining maturities.

Short-Term Liabilities

The carrying amounts for federal funds purchased, securities sold under repurchase agreements and other borrowings approximate their fair values.

FHLB Advances

FHLB advances were valued by projecting expected cash flows into the future based on each advance’s contracted rate and then determining the present value of those expected cash flows using current rates for advances with similar maturities.

Subordinated Notes

The fair value of the subordinated notes equals quoted market prices, if available. If a quoted market price is not available, the fair value is estimated using quoted market prices for similar subordinated notes.

Junior Subordinated Debt Securities

The fair value of the junior subordinated debt securities equals quoted market prices, if available. If a quoted market price is not available, the fair value is estimated using quoted market prices for similar junior subordinated debt securities.

Derivative_Financial_Instrumen

Derivative Financial Instruments	12 Months Ended
Derivative Financial Instruments	Dec. 31, 2013
Derivative Financial Instruments [Abstract]	'
Derivative Financial Instruments	'
	Note 20 – Derivative Financial Instruments

	Derivatives Designated as Hedging Instruments

	As part of Trustmark’s risk management strategy in the mortgage banking area, derivative instruments such as forward sales contracts are utilized. Trustmark’s obligations under forward sales contracts consist of commitments to deliver mortgage loans, originated and/or purchased, in the secondary market at a future date. These derivative instruments are designated as fair value hedges under FASB ASC Topic 815. The ineffective portion of changes in the fair value of the forward sales contracts and changes in the fair value of the loans designated as loans held for sale are recorded in noninterest income in mortgage banking, net. Trustmark’s off-balance sheet obligations under these derivative instruments totaled $155.8 million at December 31, 2013, with a positive valuation adjustment of $1.9 million, compared to $310.3 million, with a negative valuation adjustment of $738 thousand as of December 31, 2012.

	On April 4, 2013, Trustmark entered into a forward interest rate swap contract on junior subordinated debentures with a total notional amount of $60.0 million. The interest rate swap contract was designated as a derivative instrument in a cash flow hedge under FASB ASC Topic 815, with the objective of protecting the quarterly interest payments on Trustmark’s $60.0 million of junior subordinated debentures issued to Trustmark Preferred Capital Trust I throughout the five-year period beginning December 31, 2014 and ending December 31, 2019 from the risk of variability of those payments resulting from changes in the three-month LIBOR interest rate. Under the swap, commencing on December 31, 2014, Trustmark will pay a fixed interest rate of 1.66% and receive a variable interest rate based on three-month LIBOR on a total notional amount of $60.0 million, with quarterly net settlements.

	No ineffectiveness related to the interest rate swap designated as a cash flow hedge was recognized in the consolidated statements of income during the year ended December 31, 2013. The accumulated net after-tax gain related to effective cash flow hedges included in accumulated other comprehensive (loss) income totaled $1.5 million at December 31, 2013. Amounts reported in accumulated other comprehensive (loss) income related to derivatives will be reclassified to interest expense as interest payments are made on the Trustmark’s variable rate junior subordinated debentures. During the next twelve months, Trustmark estimates that $2 thousand will be reclassified as an increase to interest expense.

	Derivatives not Designated as Hedging Instruments

	Trustmark utilizes a portfolio of exchange-traded derivative instruments, such as Treasury note futures contracts and option contracts, to achieve a fair value return that economically hedges changes in fair value of MSR attributable to interest rates. These transactions are considered freestanding derivatives that do not otherwise qualify for hedge accounting. Changes in the fair value of these exchange-traded derivative instruments are recorded in noninterest income in mortgage banking, net and are offset by changes in the fair value of MSR. The impact of this strategy resulted in a net positive ineffectiveness of $3.7 million for the year ended December 31, 2013, compared to a net negative ineffectiveness of $3.4 million for the year ended December 31, 2012.

	Trustmark also utilizes derivative instruments such as interest rate lock commitments in its mortgage banking area. Interest rate lock commitments are residential mortgage loan commitments with customers, which guarantee a specified interest rate for a specified time period. Changes in the fair value of these derivative instruments are recorded in noninterest income in mortgage banking, net and are offset by the changes in the fair value of forward sales contracts. Trustmark’s off-balance sheet obligations under these derivative instruments totaled $58.5 million at December 31, 2013, with a positive valuation adjustment of $126 thousand, compared to $186.9 million, with a positive valuation adjustment of $2.3 million as of December 31, 2012.

	Trustmark offers certain derivatives products directly to qualified commercial lending clients seeking to manage their interest rate risk. Trustmark economically hedges interest rate swap transactions executed with commercial lending clients by entering into offsetting interest rate swap transactions with third parties. Derivative transactions executed as part of this program are not designated as qualifying hedging relationships and are, therefore, carried at fair value with the change in fair value recorded in noninterest income in bank card and other fees. Because these derivatives have mirror-image contractual terms, in addition to collateral provisions which mitigate the impact of non-performance risk, the changes in fair value are expected to substantially offset. As of December 31, 2013, Trustmark had interest rate swaps with an aggregate notional amount of $355.9 million related to this program, compared to $321.3 million as of December 31, 2012.

	Trustmark has agreements with its financial institution counterparties that contain provisions where if Trustmark defaults on any of its indebtedness, including default where repayment of the indebtedness has not been accelerated by the lender, then Trustmark could also be declared in default on its derivative obligations.

	As of December 31, 2013, the termination value of interest rate swaps in a liability position, which includes accrued interest but excludes any adjustment for nonperformance risk, related to these agreements was $508 thousand compared to $5.4 million as of December 31, 2012. As of December 31, 2013, Trustmark had posted collateral with a market value of $1.2 million against its obligations because of negotiated thresholds and minimum transfer amounts under these agreements. If Trustmark had breached any of these triggering provisions at December 31, 2013, it could have been required to settle its obligations under the agreements at the termination value.

	Credit risk participation agreements arise when Trustmark contracts with other financial institutions, as a guarantor or beneficiary, to share credit risk associated with certain interest rate swaps. These agreements provide for reimbursement of losses resulting from a third party default on the underlying swap. As of December 31, 2013, Trustmark had entered into three risk participation agreements as a beneficiary with an aggregate notional amount of $19.7 million, compared to two risk participation agreements with an aggregate notional amount of $10.1 million at December 31, 2012. The fair values of these risk participation agreements were immaterial at December 31, 2013 and 2012.

	Tabular Disclosures

	The following tables disclose the fair value of derivative instruments in Trustmark’s balance sheets as of December 31, 2013 and 2012 as well as the effect of these derivative instruments on Trustmark’s results of operations for the years ended December 31, 2013, 2012 and 2011 ($ in thousands):

			December 31,				December 31,
			2013				2012
	Derivatives in hedging relationships
	Interest rate contracts:
	Interest rate swaps included in other assets		$	2,469			$	-
	Forward contracts included in other liabilities			(1,911	)			738

	Derivatives not designated as hedging instruments
	Interest rate contracts:
	Futures contracts included in other assets		$	(2,662	)		$	(482	)
	Exchange traded purchased options included in other assets			83				42
	OTC written options (rate locks) included in other assets			126				2,284
	Interest rate swaps included in other assets			4,962				5,241
	Credit risk participation agreements included in other assets			16				22
	Exchange traded written options included in other liabilities			581				545
	Interest rate swaps included in other liabilities			4,628				5,329

			Years ended December 31,
			2013				2012				2011
	Derivatives in hedging relationships
	Amount of gain (loss) recognized in mortgage banking, net		$	2,649			$	1,479			$	(5,360	)

	Derivatives not designated as hedging instruments
	Amount of (loss) gain recognized in mortgage banking, net		$	(10,459	)		$	7,585			$	19,929
	Amount of gain (loss) recognized in bankcard and other fees			290				(82	)			(79	)

	The following table discloses the amount included in other comprehensive (loss) income for derivative instruments designated as cash flow hedges for the years ended December 31, 2013 and 2012 ($ in thousands):

			Years Ended December 31,
			2013				2012
	Derivatives in cash flow hedging relationship
	Amount of gain recognized in other comprehensive (loss) income		$	1,524			$	-

	Certain financial instruments, including resell and repurchase agreements, securities lending arrangements and derivatives, may be eligible for offset in the consolidated balance sheet and/or subject to master netting arrangements or similar agreements. Information about financial instruments that are eligible for offset in the consolidated balance sheets as of December 31, 2013 and 2012 is presented in the following tables ($ in thousands):

Offsetting of Derivative Assets
As of December 31, 2013
														Gross Amounts Not Offset in the
														Statement of Financial Position
		Gross				Gross Amounts				Net Amounts of
		Amounts of				Offset in the				Assets presented				Financial			Cash Collateral
		Recognized				Statement of				in the Statement of				Instruments			Received			Net Amount
		Assets				Financial Position				Financial Position
Derivatives		$	7,431			$	-			$	7,431			$	(967	)	$	(1,920	)	$	4,544

Offsetting of Derivative Liabilities
As of December 31, 2013
														Gross Amounts Not Offset in the
														Statement of Financial Position
		Gross				Gross Amounts				Net Amounts of
		Amounts of				Offset in the				Liabilities presented
		Recognized				Statement of				in the Statement of				Financial			Cash Collateral
		Liabilities				Financial Position				Financial Position				Instruments			Posted			Net Amount
Derivatives		$	4,628			$	-			$	4,628			$	(967	)	$	-		$	3,661

Offsetting of Derivative Assets
As of December 31, 2012
														Gross Amounts Not Offset in the
														Statement of Financial Position
		Gross				Gross Amounts				Net Amounts of
		Amounts of				Offset in the				Assets presented
		Recognized				Statement of				in the Statement of				Financial			Cash Collateral
		Assets				Financial Position				Financial Position				Instruments			Received			Net Amount
Derivatives		$	5,241			$	-			$	5,241			$	-		$	-		$	5,241

Offsetting of Derivative Liabilities
As of December 31, 2012
														Gross Amounts Not Offset in the
														Statement of Financial Position
		Gross				Gross Amounts				Net Amounts of
		Amounts of				Offset in the				Liabilities presented
		Recognized				Statement of				in the Statement of				Financial			Cash Collateral
		Liabilities				Financial Position				Financial Position				Instruments			Posted			Net Amount
Derivatives		$	5,329			$	-			$	5,329			$	-		$	(594	)	$	4,735

Segment_Information

Segment Information	12 Months Ended
Segment Information	Dec. 31, 2013
Segment Information [Abstract]	'
Segment Information	'
	Note 21 – Segment Information

	Trustmark’s management reporting structure includes three segments: General Banking, Wealth Management and Insurance. General Banking is primarily responsible for all traditional banking products and services, including loans and deposits. General Banking also consists of internal operations such as Human Resources, Executive Administration, Treasury, Funds Management, Public Affairs and Corporate Finance. Wealth Management provides customized solutions for affluent customers by integrating financial services with traditional banking products and services such as private banking, money management, full-service brokerage, financial planning, personal and institutional trust and retirement services. Through Fisher Brown Bottrell Insurance, Inc. (FBBI), a wholly owned subsidiary of TNB, Trustmark’s Insurance Division provides a full range of retail insurance products including commercial risk management products, bonding, group benefits and personal lines coverage.

	The accounting policies of each reportable segment are the same as those of Trustmark except for its internal allocations. Noninterest expenses for back-office operations support are allocated to segments based on estimated uses of those services. Trustmark measures the net interest income of its business segments with a process that assigns cost of funds or earnings credit on a matched-term basis. This process, called “funds transfer pricing”, charges an appropriate cost of funds to assets held by a business unit, or credits the business unit for potential earnings for carrying liabilities. The net of these charges and credits flows through to the General Banking segment, which contains the management team responsible for determining the bank's funding and interest rate risk strategies.

	The following table discloses financial information by reportable segment for the periods ended December 31, 2013, 2012 and 2011.

	Segment Information
	($ in thousands)
		Years Ended December 31,
		2013			2012		2011
	General Banking
	Net interest income	$	383,851		$	336,362	$	344,415
	Provision for loan losses, net		(7,419	)		12,188		30,185
	Noninterest income		113,436			122,421		109,601
	Noninterest expense		364,940			300,097		284,849
	Income before income taxes		139,766			146,498		138,982
	Income taxes		31,924			37,523		38,414
	General banking net income	$	107,842		$	108,975	$	100,568

	Selected Financial Information
	Average assets	$	11,393,972		$	9,658,924	$	9,436,557
	Depreciation and amortization	$	35,961		$	27,876	$	23,640

	Wealth Management
	Net interest income	$	4,317		$	4,327	$	4,256
	Provision for loan losses, net		37			106		143
	Noninterest income		29,581			24,565		23,300
	Noninterest expense		26,804			23,053		23,300
	Income before income taxes		7,057			5,733		4,113
	Income taxes		2,329			1,910		1,303
	Wealth Management net income	$	4,728		$	3,823	$	2,810

	Selected Financial Information
	Average assets	$	70,121		$	78,567	$	81,472
	Depreciation and amortization	$	167		$	174	$	209

	Insurance
	Net interest income	$	319		$	301	$	272
	Noninterest income		30,842			28,203		26,953
	Noninterest expense		23,987			21,352		21,701
	Income before income taxes		7,174			7,152		5,524
	Income taxes		2,684			2,667		2,061
	Insurance net income	$	4,490		$	4,485	$	3,463

	Selected Financial Information
	Average assets	$	66,876		$	65,560	$	65,414
	Depreciation and amortization	$	1,025		$	1,225	$	1,424

	Consolidated
	Net interest income	$	388,487		$	340,990	$	348,943
	Provision for loan losses, net		(7,382	)		12,294		30,328
	Noninterest income		173,859			175,189		159,854
	Noninterest expense		415,731			344,502		329,850
	Income before income taxes		153,997			159,383		148,619
	Income taxes		36,937			42,100		41,778
	Consolidated net income	$	117,060		$	117,283	$	106,841

	Selected Financial Information
	Average assets	$	11,530,969		$	9,803,051	$	9,583,443
	Depreciation and amortization	$	37,153		$	29,275	$	25,273

Parent_Company_Only_Financial_

Parent Company Only Financial Information	12 Months Ended
Parent Company Only Financial Information	Dec. 31, 2013
Parent Company Only Financial Information [Abstract]	'
Parent Company Only Financial Information	'
	Note 22 – Parent Company Only Financial Information
	($ in thousands)

	Condensed Balance Sheets	December 31,
	Assets:	2013			2012
	Investment in banks	$	1,394,250		$	1,330,452
	Other assets		25,314			19,608
	Total Assets	$	1,419,564		$	1,350,060

	Liabilities and Shareholders' Equity:
	Accrued expense	$	2,755		$	835
	Junior subordinated debt securities		61,856			61,856
	Shareholders' equity		1,354,953			1,287,369
	Total Liabilities and Shareholders' Equity	$	1,419,564		$	1,350,060

	Condensed Statements of Income	Years Ended December 31,
	Revenue:	2013			2012			2011
	Dividends received from banks	$	64,155		$	72,216		$	61,138
	Earnings of subsidiaries over distributions		54,195			46,220			46,818
	Other income		64			59			54
	Total Revenue		118,414			118,495			108,010
	Expense:
	Other expense		1,354			1,212			1,169
	Total Expense		1,354			1,212			1,169
	Net Income	$	117,060		$	117,283		$	106,841


	Condensed Statements of Cash Flows	Years Ended December 31,
	Operating Activities:	2013			2012			2011
	Net income	$	117,060		$	117,283		$	106,841
	Adjustments to reconcile net income to net cash provided by operating activities:
	Increase in investment in subsidiaries		(54,195	)		(46,220	)		(46,818	)
	Other		962			(376	)		268
	Net cash provided by operating activities		63,827			70,687			60,291

	Investing Activities:
	Payment for investments in subsidiaries		(73,263	)		(10,003	)		-
	Repayment for investments in subsidiaries		106,000			-			-
	Net cash provided by (used in) investing activities		32,737			(10,003	)		-

	Financing Activities:
	Repayments of advances from subsidiaries		(33,000	)		-			-
	Cash dividends paid on common stock		(62,276	)		(59,961	)		(59,485	)
	Other common stock transactions, net		2,832			(1,237	)		(141	)
	Net cash used in financing activities		(92,444	)		(61,198	)		(59,626	)
	Increase (decrease) in cash and cash equivalents		4,120			(514	)		665
	Cash and cash equivalents at beginning of year		17,656			18,170			17,505
	Cash and cash equivalents at end of year	$	21,776		$	17,656		$	18,170

	Trustmark (parent company only) paid income taxes of approximately $14.5 million in 2013, $57.8 million in 2012 and $37.6 million in 2011. Trustmark paid no interest for the years 2013, 2012 or 2011.

Significant_Accounting_Policie1

Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2013

Significant Accounting Policies [Abstract]

Business

Basis of Financial Statement Presentation

Securities

Loans Held for Sale (LHFS)

Loans Held for Investment (LHFI)

Allowance for Loan Losses, LHFI

Historical Valuation Allowance

Loans-Specific Valuation Allowance

Qualitative Risk Valuation Allowance

Acquired Loans

Covered Loans

FDIC Indemnification Asset

Premises and Equipment, Net

Mortgage Servicing Rights

Goodwill and Identifiable Intangible Assets

Other Real Estate

Covered Other Real Estate

Federal Home Loan Bank and Federal Reserve Stock

Insurance Commissions

Wealth Management

Derivative Financial Instruments

Derivatives Designated as Hedging Instruments

Derivatives not Designated as Hedging Instruments

Income Taxes

Stock-Based Compensation

Statements of Cash Flows

Years Ended December 31,

2013

2012

2011

Income taxes paid

14,520

57,834

37,604

Interest expense paid on deposits and borrowings

25,715

31,496

44,060

Noncash transfers from loans to foreclosed properties (1)

41,042

37,635

57,297

Assets acquired in business combination

1,845,543

234,960

207,243

Liabilities assumed in business combination

1,821,066

209,322

228,236

(1) Includes transfers from covered loans to foreclosed properties.

Per Share Data

Years Ended December 31,

2013

2012

2011

Basic shares

66,897

64,659

64,066

Dilutive shares

176

192

195

Diluted shares

67,073

64,851

64,261

Weighted-average antidilutive stock awards were excluded in determining diluted EPS. The following table reflects weighted-average antidilutive stock awards for the periods presented (in thousands):

Years Ended December 31,

2013

2012

2011

Weighted-average antidilutive stock awards

333

653

1,226

Fair Value Measurements

Level 1 Inputs – Valuation is based upon quoted prices (unadjusted) in active markets for identical assets or liabilities that Trustmark has the ability to access at the measurement date.

Accounting Policies Recently Adopted and Pending Accounting Pronouncements

Significant_Accounting_Policie2

Significant Accounting Policies (Tables)	12 Months Ended
Significant Accounting Policies (Tables)	Dec. 31, 2013
Significant Accounting Policies [Abstract]	'
Supplemental Cash Flow Information	'
	For purposes of reporting cash flows, cash and cash equivalents include cash on hand and amounts due from banks. The following table reflects specific transaction amounts for the periods presented ($ in thousands):

		Years Ended December 31,
		2013		2012		2011
	Income taxes paid	$	14,520	$	57,834	$	37,604
	Interest expense paid on deposits and borrowings		25,715		31,496		44,060
	Noncash transfers from loans to foreclosed properties (1)		41,042		37,635		57,297
	Assets acquired in business combination		1,845,543		234,960		207,243
	Liabilities assumed in business combination		1,821,066		209,322		228,236

	(1) Includes transfers from covered loans to foreclosed properties.
Weighted-average shares used to calculate basic and diluted EPS	'
	Basic EPS is computed by dividing net income by the weighted-average shares of common stock outstanding. Diluted EPS is computed by dividing net income by the weighted-average shares of common stock outstanding, adjusted for the effect of potentially dilutive stock awards outstanding during the period. The following table reflects weighted-average shares used to calculate basic and diluted EPS for the periods presented (in thousands):

		Years Ended December 31,
		2013		2012		2011
	Basic shares		66,897		64,659		64,066
	Dilutive shares		176		192		195
	Diluted shares		67,073		64,851		64,261
Weighted-average antidilutive stock awards excluded from determining diluted EPS	'
	Weighted-average antidilutive stock awards were excluded in determining diluted EPS. The following table reflects weighted-average antidilutive stock awards for the periods presented (in thousands):

		Years Ended December 31,
		2013		2012		2011

	Weighted-average antidilutive stock awards		333		653		1,226

Business_Combinations_Tables

Business Combinations (Tables)	12 Months Ended
Business Combinations (Tables)	Dec. 31, 2013
BancTrust acquisition [Member]	'
Business Acquisition [Line Items]	'
Statement of assets purchased and liabilities assumed	'
	Since the end of the first quarter of 2013, Trustmark recorded fair value adjustments based on the estimated fair value of certain acquired loans, premises and equipment, net and other real estate. These measurement period adjustments resulted in a decrease in acquired noncovered loans of $6.8 million, a decrease in premises and equipment, net of $627 thousand, a decrease in other real estate of $2.6 million, an increase in the deferred tax asset of $3.4 million, and an increase in goodwill of $6.3 million. Trustmark also recorded an adjustment to transfer $1.6 million of acquired property from premises and equipment, net to other real estate. These measurement period adjustments have been presented on a retrospective basis, consistent with applicable accounting guidance. The purchase price allocation for the fair value of fixed assets and the valuation of the allowance on deferred tax assets was deemed preliminary as of December 31, 2013. During the first quarter of 2014, the purchase price allocation will be finalized and is not expected to have a significant impact to Trustmark’s consolidated financial statements. The statement of assets purchased and liabilities assumed in the BancTrust acquisition is presented below at their adjusted estimated fair values as of the acquisition date of February 15, 2013 ($ in thousands):

	Assets:
	Cash and due from banks	$	141,616
	Securities available for sale		528,016
	Loans held for sale		1,050
	Acquired noncovered loans		944,235
	Premises and equipment, net		54,952
	Identifiable intangible assets		33,498
	Other real estate		40,103
	Other assets		102,073
	Total Assets		1,845,543

	Liabilities:
	Deposits		1,740,254
	Other borrowings		64,051
	Other liabilities		16,761
	Total Liabilities		1,821,066

	Net identified assets acquired at fair value		24,477
	Goodwill		81,597
	Net assets acquired at fair value	$	106,074
Unaudited pro forma financial information	'
	The following table presents the unaudited pro forma financial information as if the acquisition of BancTrust had occurred on January 1, 2012. The unaudited pro forma information for the years ended December 31, 2013 and 2012 contains certain adjustments, including acquisition accounting fair value adjustments, amortization of the core deposit intangible and related income tax effects. The non-routine transaction expenses related to the BancTrust acquisition incurred during the first three months of 2013 as well as potential cost savings from the acquisition are not reflected in the unaudited pro forma amounts. The unaudited pro forma financial information is not necessarily indicative of the results of operations that would have occurred had the acquisition been effected on the assumed date ($ in thousands except per share data).

		Pro Forma
		Years Ended December 31,
		2013			2012

	Net Interest Income	$	396,003		$	410,443

	Total Noninterest Income		175,722			188,064

	Net Income		124,869			136,120

	Pro Forma Earnings Per Common Share
	Basic	$	1.81		$	2.03

	Diluted	$	1.8		$	2.03
Bay Bank and Trust Company [Member]	'
Business Acquisition [Line Items]	'
Statement of assets purchased and liabilities assumed	'
	The statement of assets purchased and liabilities assumed in the Bay Bank acquisition is presented below at their estimated fair values as of the acquisition date of March 16, 2012 ($ in thousands):

	Assets:
	Cash and due from banks	$	88,154
	Securities available for sale		26,369
	Acquired noncovered loans		97,914
	Premises and equipment, net		9,466
	Identifiable intangible assets		7,017
	Other real estate		2,569
	Other assets		3,471
	Total Assets		234,960

	Liabilities:
	Deposits		208,796
	Other liabilities		526
	Total Liabilities		209,322

	Net assets acquired at fair value		25,638
	Consideration paid to Bay Bank		22,003

	Bargain purchase gain		3,635
	Income taxes		-
	Bargain purchase gain, net of taxes	$	3,635
Heritage Banking Group Business Acquisition [Member]	'
Business Acquisition [Line Items]	'
Statement of assets purchased and liabilities assumed	'
	The statement of assets purchased and liabilities assumed in the Heritage acquisition are presented below at their estimated fair values as of the acquisition date of April 15, 2011 ($ in thousands):

	Assets:
	Cash and due from banks	$	50,447
	Federal funds sold		1,000
	Securities available for sale		6,389
	Acquired noncovered loans		9,644
	Acquired covered loans		97,770
	Premises and equipment, net		55
	Identifiable intangible assets		902
	Covered other real estate		7,485
	FDIC indemnification asset		33,333
	Other assets		218
	Total Assets		207,243

	Liabilities:
	Deposits		204,349
	Short-term borrowings		23,157
	Other liabilities		730
	Total Liabilities		228,236

	Net assets acquired at fair value		(20,993	)
	Cash received on acquisition		28,449

	Bargain purchase gain		7,456
	Income taxes		2,852
	Bargain purchase gain, net of taxes	$	4,604

Securities_Available_for_Sale_1

Securities Available for Sale and Held to Maturity (Tables)	12 Months Ended
Securities Available for Sale and Held to Maturity (Tables)	Dec. 31, 2013
Securities Available for Sale and Held to Maturity [Abstract]	'
Amortized cost and estimated fair value of available for sale and held to maturity securities	'
	The following table is a summary of the amortized cost and estimated fair value of securities available for sale and held to maturity at December 31, 2013 and 2012 ($ in thousands):

		Securities Available for Sale												Securities Held to Maturity
					Gross			Gross			Estimated					Gross			Gross			Estimated
		Amortized			Unrealized			Unrealized			Fair			Amortized		Unrealized			Unrealized			Fair
	31-Dec-13	Cost			Gains			(Losses)			Value			Cost		Gains			(Losses)			Value
	U.S. Treasury securities	$	501		$	1		$	-		$	502		$	-	$	-		$	-		$	-
	U.S. Government agency obligations
	Issued by U.S. Government agencies		129,653			1,125			(1,485	)		129,293			-		-			-			-
	Issued by U.S. Government sponsored agencies		40,681			19			(521	)		40,179			100,159		-			(1,580	)		98,579
	Obligations of states and political subdivisions		165,810			6,243			(315	)		171,738			65,987		2,806			(281	)		68,512
	Mortgage-backed securities
	Residential mortgage pass-through securities
	Guaranteed by GNMA		14,099			459			(84	)		14,474			9,433		142			(72	)		9,503
	Issued by FNMA and FHLMC		239,880			3,147			(1,909	)		241,118			12,724		30			(162	)		12,592
	Other residential mortgage-backed securities
	Issued or guaranteed by FNMA, FHLMC or GNMA		1,300,375			12,459			(22,093	)		1,290,741			837,393		-			(15,072	)		822,321
	Commercial mortgage-backed securities
	Issued or guaranteed by FNMA, FHLMC or GNMA		235,317			7,278			(423	)		242,172			143,032		85			(3,791	)		139,326
	Asset-backed securities and structured financial products		62,689			1,248			-			63,937			-		-			-			-
	Total	$	2,189,005		$	31,979		$	(26,830	)	$	2,194,154		$	1,168,728	$	3,063		$	(20,958	)	$	1,150,833

	31-Dec-12
	U.S. Government agency obligations
	Issued by U.S. Government agencies	$	10		$	-		$	-		$	10		$	-	$	-		$	-		$	-
	Issued by U.S. Government sponsored agencies		105,396			339			-			105,735			-		-			-			-
	Obligations of states and political subdivisions		202,877			12,900			(16	)		215,761			36,206		4,184			-			40,390
	Mortgage-backed securities
	Residential mortgage pass-through securities
	Guaranteed by GNMA		18,981			921			-			19,902			3,245		227			-			3,472
	Issued by FNMA and FHLMC		201,493			7,071			-			208,564			572		52			-			624
	Other residential mortgage-backed securities
	Issued or guaranteed by FNMA, FHLMC or GNMA		1,436,812			29,574			(20	)		1,466,366			-		-			-
	Commercial mortgage-backed securities
	Issued or guaranteed by FNMA, FHLMC or GNMA		380,514			19,420			(154	)		399,780			2,165		237			-			2,402
	Asset-backed securities and structured financial products		238,893			2,755			(21	)		241,627			-		-			-			-
	Total	$	2,584,976		$	72,980		$	(211	)	$	2,657,745		$	42,188	$	4,700		$	-		$	46,888
Securities with gross unrealized losses, segregated by length of impairment	'
	The table below includes securities with gross unrealized losses segregated by length of impairment ($ in thousands):

		Less than 12 Months						12 Months or More						Total
					Gross						Gross					Gross
		Estimated			Unrealized			Estimated			Unrealized			Estimated		Unrealized
	31-Dec-13	Fair Value			(Losses)			Fair Value			(Losses)			Fair Value		(Losses)
	U.S. Government agency obligations
	Issued by U.S. Government agencies	$	68,908		$	(1,485	)	$	-		$	-		$	68,908	$	(1,485	)
	Issued by U.S. Government sponsored agencies		138,478			(2,101	)		-			-			138,478		(2,101	)
	Obligations of states and political subdivisions		55,963			(586	)		796			(10	)		56,759		(596	)
	Mortgage-backed securities
	Residential mortgage pass-through securities
	Guaranteed by GNMA		14,732			(155	)		161			(1	)		14,893		(156	)
	Issued by FNMA and FHLMC		118,466			(2,071	)		-			-			118,466		(2,071	)
	Other residential mortgage-backed securities
	Issued or guaranteed by FNMA, FHLMC or GNMA		1,534,381			(36,750	)		23,458			(415	)		1,557,839		(37,165	)
	Commercial mortgage-backed securities
	Issued or guaranteed by FNMA, FHLMC or GNMA		177,412			(4,214	)		-			-			177,412		(4,214	)
	Total	$	2,108,340		$	(47,362	)	$	24,415		$	(426	)	$	2,132,755	$	(47,788	)

	31-Dec-12
	Obligations of states and political subdivisions	$	5,878		$	(16	)	$	-		$	-		$	5,878	$	(16	)
	Mortgage-backed securities
	Other residential mortgage-backed securities
	Issued or guaranteed by FNMA, FHLMC or GNMA		3,055			(20	)		-			-			3,055		(20	)
	Commercial mortgage-backed securities
	Issued or guaranteed by FNMA, FHLMC or GNMA		-			-			16,339			(154	)		16,339		(154	)
	Asset-backed securities and structured financial products		16,412			(21	)		-			-			16,412		(21	)
	Total	$	25,345		$	(57	)	$	16,339		$	(154	)	$	41,684	$	(211	)
Gains and losses as a result of calls and disposition of securities	'
	Gains and losses as a result of calls and dispositions of securities, as well as any associated proceeds, were as follows ($ in thousands):
		Years Ended December 31,
	Available for Sale	2013			2012			2011
	Proceeds from calls and sales of securities	$	224,853		$	38,364		$	24,471
	Gross realized gains		1,680			1,052			57
	Gross realized (losses)		(1,195	)		(2	)		(11	)

	Held to Maturity
	Proceeds from calls of securities	$	-		$	335		$	3,645
	Gross realized gains		-			9			34
Contractual maturities of available for sale and held to maturity securities	'
	The amortized cost and estimated fair value of securities available for sale and held to maturity at December 31, 2013, by contractual maturity, are shown below ($ in thousands). Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.

		Securities						Securities
		Available for Sale						Held to Maturity
					Estimated						Estimated
		Amortized			Fair			Amortized			Fair
		Cost			Value			Cost			Value
	Due in one year or less	$	8,958		$	9,020		$	1,936		$	1,968
	Due after one year through five years		152,654			156,970			12,949			13,943
	Due after five years through ten years		104,057			106,288			134,997			135,186
	Due after ten years		133,665			133,371			16,264			15,994
			399,334			405,649			166,146			167,091
	Mortgage-backed securities		1,789,671			1,788,505			1,002,582			983,742
	Total	$	2,189,005		$	2,194,154		$	1,168,728		$	1,150,833

Loans_Held_for_Investment_LHFI1

Loans Held for Investment (LHFI) and Allowance for Loan Losses, LHFI (Tables)	12 Months Ended
	Dec. 31, 2013
Loans Held for Investment (LHFI) and Allowance for Loan Losses, LHFI [Abstract]	'
Loan portfolio held for investment	'
	At December 31, 2013 and 2012, LHFI consisted of the following ($ in thousands):

		2013			2012
	Loans secured by real estate:
	Construction, land development and other land loans	$	596,889		$	468,975
	Secured by 1-4 family residential properties		1,485,564			1,497,480
	Secured by nonfarm, nonresidential properties		1,415,139			1,410,264
	Other		189,362			189,949
	Commercial and industrial loans		1,157,614			1,169,513
	Consumer loans		165,308			171,660
	Other loans		789,005			684,913
	LHFI		5,798,881			5,592,754
	Less allowance for loan losses, LHFI		66,448			78,738
	Net LHFI	$	5,732,433		$	5,514,016
Summary of LHFI evaluated for impairment	'
	The following table details LHFI individually and collectively evaluated for impairment at December 31, 2013 and 2012 ($ in thousands):

		31-Dec-13
		LHFI Evaluated for Impairment
		Individually			Collectively			Total

	Loans secured by real estate:
	Construction, land development and other land loans	$	13,327		$	583,562		$	596,889
	Secured by 1-4 family residential properties		21,603			1,463,961			1,485,564
	Secured by nonfarm, nonresidential properties		21,809			1,393,330			1,415,139
	Other		1,327			188,035			189,362
	Commercial and industrial loans		6,286			1,151,328			1,157,614
	Consumer loans		151			165,157			165,308
	Other loans		735			788,270			789,005
	Total	$	65,238		$	5,733,643		$	5,798,881

		31-Dec-12
		LHFI Evaluated for Impairment
		Individually			Collectively			Total

	Loans secured by real estate:
	Construction, land development and other land loans	$	27,105		$	441,870		$	468,975
	Secured by 1-4 family residential properties		27,114			1,470,366			1,497,480
	Secured by nonfarm, nonresidential properties		18,289			1,391,975			1,410,264
	Other		3,956			185,993			189,949
	Commercial and industrial loans		4,741			1,164,772			1,169,513
	Consumer loans		360			171,300			171,660
	Other loans		798			684,115			684,913
	Total	$	82,363		$	5,510,391		$	5,592,754
Impaired financing receivables	'
	At December 31, 2013 and 2012, the carrying amount of LHFI individually evaluated for impairment consisted of the following ($ in thousands):

		31-Dec-13
		LHFI
		Unpaid			With No Related			With an			Total					Average
		Principal			Allowance			Allowance			Carrying			Related		Recorded
		Balance			Recorded			Recorded			Amount			Allowance		Investment
	Loans secured by real estate:
	Construction, land development and other land loans	$	24,350		$	9,817		$	3,510		$	13,327		$	989	$	20,216
	Secured by 1-4 family residential properties		26,541			3,095			18,508			21,603			191		24,359
	Secured by nonfarm, nonresidential properties		24,879			10,225			11,584			21,809			2,307		20,049
	Other		1,375			-			1,327			1,327			122		2,641
	Commercial and industrial loans		8,702			2,506			3,780			6,286			1,253		5,513
	Consumer loans		286			-			151			151			2		255
	Other loans		849			-			735			735			317		767
	Total	$	86,982		$	25,643		$	39,595		$	65,238		$	5,181	$	73,800

		31-Dec-12
		LHFI
		Unpaid			With No Related			With an			Total					Average
		Principal			Allowance			Allowance			Carrying			Related		Recorded
		Balance			Recorded			Recorded			Amount			Allowance		Investment
	Loans secured by real estate:
	Construction, land development and other land loans	$	46,558		$	9,571		$	17,534		$	27,105		$	4,992	$	33,759
	Secured by 1-4 family residential properties		35,155			2,533			24,581			27,114			1,469		25,731
	Secured by nonfarm, nonresidential properties		23,337			8,184			10,105			18,289			2,296		21,135
	Other		6,036			566			3,390			3,956			760		4,914
	Commercial and industrial loans		7,251			2,336			2,405			4,741			640		9,444
	Consumer loans		624			-			360			360			5		592
	Other loans		857			-			798			798			342		835
	Total	$	119,818		$	23,190		$	59,173		$	82,363		$	10,504	$	96,410
Impact of modifications classified as troubled debt restructurings	'
	The following table illustrates the impact of modifications classified as TDRs as well as those TDRs modified within the last 12 months for which there was a payment default during the period for the years ended December 31, 2013, 2012 and 2011 ($ in thousands):
		Year Ended December 31, 2013
	Troubled Debt Restructurings				Pre-Modification			Post-Modification
					Outstanding			Outstanding
		Number of			Recorded			Recorded
		Contracts			Investment			Investment
	Secured by 1-4 family residential properties		10		$	498		$	441
	Secured by nonfarm, nonresidential properties		1			952			952
	Commercial and industrial		2			944			937
	Other loans		1			2,490			2,490
	Total		14		$	4,884		$	4,820

		Year Ended December 31, 2012
	Troubled Debt Restructurings				Pre-Modification			Post-Modification
					Outstanding			Outstanding
		Number of			Recorded			Recorded
		Contracts			Investment			Investment
	Construction, land development and other land loans		12		$	4,092		$	4,092
	Secured by 1-4 family residential properties		48			5,399			5,383
	Secured by nonfarm, nonresidential properties		2			1,210			1,210
	Other loans secured by real estate		1			199			199
	Commercial and industrial		1			148			-
	Total		64		$	11,048		$	10,884

		Year Ended December 31, 2011
	Troubled Debt Restructurings				Pre-Modification			Post-Modification
					Outstanding			Outstanding
		Number of			Recorded			Recorded
		Contracts			Investment			Investment
	Construction, land development and other land loans		26		$	16,200		$	13,984
	Secured by 1-4 family residential properties		17			3,843			3,793
	Commercial and industrial		2			11,997			11,503
	Total		45		$	32,040		$	29,280
Troubled debt restructuring subsequently defaulted	'

		Years Ended December 31,
		2013						2012						2011
	Troubled Debt Restructurings that Subsequently Defaulted	Number of Contracts			Recorded Investment			Number of Contracts			Recorded Investment			Number of Contracts		Recorded Investment
	Construction, land development and other land loans		-		$	-			7		$	1,881			5	$	3,058
	Secured by 1-4 family residential properties		5			345			16			1,469			1		179
	Secured by nonfarm, nonresidential properties		-			-			1			862			-		-
	Total		5		$	345			24		$	4,212			6	$	3,237
Troubled debt restructuring related to loans held for investment, excluding covered loans, by loan type	'
	At December 31, 2013, 2012 and 2011, the following table details LHFI classified as TDRs by loan type ($ in thousands):

		31-Dec-13
		Accruing			Nonaccrual			Total
	Construction, land development and other land loans	$	-		$	6,247		$	6,247
	Secured by 1-4 family residential properties		1,320			4,201			5,521
	Secured by nonfarm, nonresidential properties		-			2,292			2,292
	Other loans secured by real estate		-			167			167
	Commercial and industrial		-			549			549
	Total Troubled Debt Restructurings by Type	$	1,320		$	13,456		$	14,776

		31-Dec-12
		Accruing			Nonaccrual			Total
	Construction, land development and other land loans	$	233		$	12,073		$	12,306
	Secured by 1-4 family residential properties		1,280			5,908			7,188
	Secured by nonfarm, nonresidential properties		-			4,582			4,582
	Other loans secured by real estate		-			197			197
	Total Troubled Debt Restructurings by Type	$	1,513		$	22,760		$	24,273

		31-Dec-11
		Accruing			Nonaccrual			Total
	Construction, land development and other land loans	$	241		$	14,041		$	14,282
	Secured by 1-4 family residential properties		782			3,485			4,267
	Secured by nonfarm, nonresidential properties		-			4,135			4,135
	Commercial and industrial		-			11,503			11,503
	Total Troubled Debt Restructurings by Type	$	1,023		$	33,164		$	34,187
Carrying amount of loans by credit quality indicator	'
	The table below illustrates the carrying amount of LHFI by credit quality indicator at December 31, 2013 and 2012 ($ in thousands):

		31-Dec-13
					Commercial LHFI
					Pass -			Special Mention -			Substandard -			Doubtful -
					Categories 1-6			Category 7			Category 8			Category 9		Subtotal
	Loans secured by real estate:
	Construction, land development and other land loans				$	493,380		$	4,383		$	47,610		$	318	$	545,691
	Secured by 1-4 family residential properties					119,640			479			7,839			110		128,068
	Secured by nonfarm, nonresidential properties					1,313,470			12,620			87,203			399		1,413,692
	Other					178,951			-			6,756			235		185,942
	Commercial and industrial loans					1,099,429			18,771			37,209			2,187		1,157,596
	Consumer loans					496			-			-			-		496
	Other loans					777,395			60			4,126			669		782,250
					$	3,982,761		$	36,313		$	190,743		$	3,918	$	4,213,735

		Consumer LHFI
					Past Due			Past Due
		Current			30-89 Days			90 Days or More			Nonaccrual			Subtotal		Total LHFI
	Loans secured by real estate:
	Construction, land development and other land loans	$	50,850		$	131		$	-		$	217		$	51,198	$	596,889
	Secured by 1-4 family residential properties		1,327,624			8,937			2,996			17,939			1,357,496		1,485,564
	Secured by nonfarm, nonresidential properties		1,439			8			-			-			1,447		1,415,139
	Other		3,418			2			-			-			3,420		189,362
	Commercial and industrial loans		13			5			-			-			18		1,157,614
	Consumer loans		162,348			2,012			302			150			164,812		165,308
	Other loans		6,755			-			-			-			6,755		789,005
		$	1,552,447		$	11,095		$	3,298		$	18,306		$	1,585,146	$	5,798,881

		31-Dec-12
					Commercial LHFI
					Pass -			Special Mention -			Substandard -			Doubtful -
					Categories 1-6			Category 7			Category 8			Category 9		Subtotal
	Loans secured by real estate:
	Construction, land development and other land loans				$	335,179		$	23,812		$	63,832		$	143	$	422,966
	Secured by 1-4 family residential properties					110,333			1,012			13,303			432		125,080
	Secured by nonfarm, nonresidential properties					1,298,820			12,156			98,082			-		1,409,058
	Other					178,790			444			5,768			-		185,002
	Commercial and industrial loans					1,091,356			36,992			39,479			1,334		1,169,161
	Consumer loans					404			-			-			-		404
	Other loans					676,618			59			1,714			784		679,175
					$	3,691,500		$	74,475		$	222,178		$	2,693	$	3,990,846

		Consumer LHFI
					Past Due			Past Due
		Current			30-89 Days			90 Days or More			Nonaccrual			Subtotal		Total LHFI
	Loans secured by real estate:
	Construction, land development and other land loans	$	44,131		$	1,109		$	-		$	769		$	46,009	$	468,975
	Secured by 1-4 family residential properties		1,339,000			10,332			2,630			20,438			1,372,400		1,497,480
	Secured by nonfarm, nonresidential properties		1,206			-			-			-			1,206		1,410,264
	Other		4,746			150			-			51			4,947		189,949
	Commercial and industrial loans		313			29			-			10			352		1,169,513
	Consumer loans		167,131			3,481			285			359			171,256		171,660
	Other loans		5,738			-			-			-			5,738		684,913
		$	1,562,265		$	15,101		$	2,915		$	21,627		$	1,601,908	$	5,592,754
Aging analysis of past due loans and nonaccrual loans, excluding covered loans by class	'
	LHFI past due 90 days or more totaled $3.3 million and $6.4 million at December 31, 2013 and 2012, respectively. The following table provides an aging analysis of past due and nonaccrual LHFI by class at December 31, 2013 and 2012 ($ in thousands):

		31-Dec-13
		Past Due
					90 Days									Current
		30-89 Days			or More (1)			Total			Nonaccrual			Loans		Total LHFI
	Loans secured by real estate:
	Construction, land development and other land loans	$	923		$	-		$	923		$	13,327		$	582,639	$	596,889
	Secured by 1-4 family residential properties		9,437			2,996			12,433			21,603			1,451,528		1,485,564
	Secured by nonfarm, nonresidential properties		2,044			-			2,044			21,809			1,391,286		1,415,139
	Other		5			-			5			1,327			188,030		189,362
	Commercial and industrial loans		1,007			-			1,007			6,286			1,150,321		1,157,614
	Consumer loans		2,012			302			2,314			151			162,843		165,308
	Other loans		17			-			17			735			788,253		789,005
	Total	$	15,445		$	3,298		$	18,743		$	65,238		$	5,714,900	$	5,798,881

	(1) - Past due 90 days or more but still accruing interest.

		31-Dec-12
		Past Due
					90 Days									Current
		30-89 Days			or More (1)			Total			Nonaccrual			Loans		Total LHFI
	Loans secured by real estate:
	Construction, land development and other land loans	$	4,957		$	438		$	5,395		$	27,105		$	436,475	$	468,975
	Secured by 1-4 family residential properties		12,626			3,131			15,757			27,114			1,454,609		1,497,480
	Secured by nonfarm, nonresidential properties		9,460			-			9,460			18,289			1,382,515		1,410,264
	Other		172			-			172			3,956			185,821		189,949
	Commercial and industrial loans		4,317			2,525			6,842			4,741			1,157,930		1,169,513
	Consumer loans		3,480			284			3,764			360			167,536		171,660
	Other loans		181			-			181			798			683,934		684,913
	Total	$	35,193		$	6,378		$	41,571		$	82,363		$	5,468,820	$	5,592,754

	(1) - Past due 90 days or more but still accruing interest.
Change in allowance for loan losses	'
	Changes in the allowance for loan losses, LHFI were as follows ($ in thousands):

		2013			2012			2011
	Balance at January 1,	$	78,738		$	89,518		$	93,510
	Loans charged-off		(13,478	)		(31,376	)		(45,769	)
	Recoveries		14,609			13,830			12,073
	Net recoveries (charge-offs)		1,131			(17,546	)		(33,696	)
	Provision for loan losses, LHFI		(13,421	)		6,766			29,704
	Balance at December 31,	$	66,448		$	78,738		$	89,518

	The following tables detail the balance in the allowance for loan losses, LHFI by portfolio segment at December 31, 2013 and 2012, respectively ($ in thousands):

		2013
		Balance									Provision for			Balance
		January 1,			Charge-offs			Recoveries			Loan Losses			December 31,
	Loans secured by real estate:
	Construction, land development and other land loans	$	21,838		$	(1,441	)	$	3,077		$	(10,309	)	$	13,165
	Secured by 1-4 family residential properties		12,957			(1,298	)		427			(2,453	)		9,633
	Secured by nonfarm, nonresidential properties		21,096			(1,002	)		225			(647	)		19,672
	Other		2,197			(910	)		229			564			2,080
	Commercial and industrial loans		14,319			(1,371	)		2,298			276			15,522
	Consumer loans		3,087			(2,425	)		4,798			(3,055	)		2,405
	Other loans		3,244			(5,031	)		3,555			2,203			3,971
	Total allowance for loan losses, LHFI	$	78,738		$	(13,478	)	$	14,609		$	(13,421	)	$	66,448

		Disaggregated by Impairment Method
		Individually			Collectively			Total
	Loans secured by real estate:
	Construction, land development and other land loans	$	988		$	12,177		$	13,165
	Secured by 1-4 family residential properties		191			9,442			9,633
	Secured by nonfarm, nonresidential properties		2,307			17,365			19,672
	Other		123			1,957			2,080
	Commercial and industrial loans		1,253			14,269			15,522
	Consumer loans		2			2,403			2,405
	Other loans		317			3,654			3,971
	Total allowance for loan losses, LHFI	$	5,181		$	61,267		$	66,448

		2012
		Balance									Provision for			Balance
		January 1,			Charge-offs			Recoveries			Loan Losses			December 31,
	Loans secured by real estate:
	Construction, land development and other land loans	$	27,220		$	(3,480	)	$	-		$	(1,902	)	$	21,838
	Secured by 1-4 family residential properties		12,650			(5,532	)		435			5,404			12,957
	Secured by nonfarm, nonresidential properties		24,358			(5,410	)		-			2,148			21,096
	Other		3,079			(1,601	)		-			719			2,197
	Commercial and industrial loans		15,868			(6,922	)		3,916			1,457			14,319
	Consumer loans		3,656			(3,082	)		6,211			(3,698	)		3,087
	Other loans		2,687			(5,349	)		3,268			2,638			3,244
	Total allowance for loan losses, LHFI	$	89,518		$	(31,376	)	$	13,830		$	6,766		$	78,738

		Disaggregated by Impairment Method
		Individually			Collectively			Total
	Loans secured by real estate:
	Construction, land development and other land loans	$	4,992		$	16,846		$	21,838
	Secured by 1-4 family residential properties		1,469			11,488			12,957
	Secured by nonfarm, nonresidential properties		2,296			18,800			21,096
	Other		760			1,437			2,197
	Commercial and industrial loans		640			13,679			14,319
	Consumer loans		5			3,082			3,087
	Other loans		342			2,902			3,244
	Total allowance for loan losses, LHFI	$	10,504		$	68,234		$	78,738

Acquired_Loans_Tables

Acquired Loans (Tables)	12 Months Ended
Acquired Loans (Tables)	Dec. 31, 2013
Acquired Loans [Abstract]	'
Schedule of covered and noncovered acquired loans by type	'
	At December 31, 2013 and 2012, acquired loans consisted of the following ($ in thousands):

			31-Dec-13								31-Dec-12
			Covered				Noncovered				Covered				Noncovered
	Loans secured by real estate:
	Construction, land development and other land loans		$	2,363			$	98,928			$	3,924			$	10,056
	Secured by 1-4 family residential properties			16,416				157,914				23,990				19,404
	Secured by nonfarm, nonresidential properties			10,945				287,136				18,407				45,649
	Other			2,644				33,948				3,567				669
	Commercial and industrial loans			394				149,495				747				3,035
	Consumer loans			119				18,428				177				2,610
	Other loans			1,335				24,141				1,229				100
	Acquired loans			34,216				769,990				52,041				81,523
	Less allowance for loan losses, acquired loans			2,387				7,249				4,190				1,885
	Net acquired loans		$	31,829			$	762,741			$	47,851			$	79,638
Business Acquisition [Line Items]	'
Changes in the carrying value of acquired loans	'
	The following table presents changes in the net carrying value of the acquired loans for the periods presented ($ in thousands):

			Covered								Noncovered
			Acquired				Acquired				Acquired				Acquired
			Impaired				Not ASC 310-30 (1)				Impaired				Not ASC 310-30 (1)
	Carrying value, net at January 1, 2012		$	72,131			$	4,171			$	4,350			$	13
	Loans acquired (2)			-				-				91,987				5,927
	Accretion to interest income			8,031				367				4,138				161
	Payments received, net			(27,496	)			(2,107	)			(24,330	)			868
	Other			(3,085	)			29				(1,318	)			(273	)
	Less allowance for loan losses, acquired loans			(4,190	)			-				(1,885	)			-
	Carrying value, net at December 31, 2012			45,391				2,460				72,942				6,696
	Loans acquired (3)			-				-				790,335				153,900
	Accretion to interest income			5,150				159				35,538				2,628
	Payments received, net			(18,976	)			(819	)			(229,618	)			(39,281	)
	Other			(3,202	)			(137	)			(24,177	)			(858	)
	Less allowance for loan losses, acquired loans			1,803				-				(5,364	)			-
	Carrying value, net at December 31, 2013		$	30,166			$	1,663			$	639,656			$	123,085

	(1) Acquired nonimpaired loans consist of revolving credit agreements and commercial leases that are not in scope for FASB ASC Topic 310-30.
	(2) Fair value of loans acquired from Bay Bank on March 16, 2012.
	(3) Adjusted fair value of loans acquired from BancTrust on February 15, 2013.
Changes in accretable yield of acquired loans	'
	The following table presents changes in the accretable yield for the years ended December 31, 2013 and 2012 ($ in thousands):

			Years Ended December 31,
			2013				2012
	Accretable yield at January 1, (1)		$	(26,383	)		$	(17,653	)
	Additions due to acquisition (2)			(98,394	)			(15,538	)
	Accretion to interest income			40,688				12,169
	Disposals			18,438				3,757
	Reclassification to / (from) nonaccretable difference (3)			(43,355	)			(9,118	)
	Accretable yield at December 31,		$	(109,006	)		$	(26,383	)

	-1	Accretable yield at January 1, 2012, includes $777 thousand of accretable yield for noncovered loans acquired from Heritage
	-1	and accounted for under FASB ASC Topic 310-30.
	-2	Accretable yield on loans acquired from BancTrust on February 15, 2013 and Bay Bank on March 16, 2012.
	-3	Reclassifications from nonaccretable difference are due to lower loss expectations and improvements in expected cashflows.
Components of the allowance for loan losses on acquired impaired loans	'
	The following table presents the components of the allowance for loan losses on acquired impaired loans for the years ended December 31, 2013 and 2012 ($ in thousands):

			Covered				Noncovered				Total
	Balance at January 1, 2013		$	4,190			$	1,885			$	6,075
	Provision for loan losses, acquired loans			(1,328	)			7,367				6,039
	Loans charged-off			(460	)			(3,634	)			(4,094	)
	Recoveries			(15	)			1,631				1,616
	Net charge-offs			(475	)			(2,003	)			(2,478	)
	Balance at December 31, 2013		$	2,387			$	7,249			$	9,636

			Covered				Noncovered				Total
	Balance at January 1, 2012		$	502			$	-			$	502
	Provision for loan losses, acquired loans			3,612				1,916				5,528
	Loans charged-off			(81	)			(290	)			(371	)
	Recoveries			157				259				416
	Net recoveries (charge-offs)			76				(31	)			45
	Balance at December 31, 2012		$	4,190			$	1,885			$	6,075
Carrying amount of acquired loans by credit quality indicator	'
	The tables below illustrate the carrying amount of acquired loans by credit quality indicator at December 31, 2013 and 2012 ($ in thousands):

			31-Dec-13
							Commercial Loans
							Pass -				Special Mention -				Substandard -				Doubtful -
							Categories 1-6				Category 7				Category 8				Category 9			Subtotal
	Covered Loans: (1)
	Loans secured by real estate:
	Construction, land development and other land loans						$	228			$	-			$	1,126			$	771		$	2,125
	Secured by 1-4 family residential properties							1,629				430				1,798				-			3,857
	Secured by nonfarm, nonresidential properties							5,446				109				4,723				-			10,278
	Other							832				134				717				2			1,685
	Commercial and industrial loans							254				28				112				-			394
	Consumer loans							-				-				-				-			-
	Other loans							271				-				414				646			1,331
	Total covered loans							8,660				701				8,890				1,419			19,670

	Noncovered loans:
	Loans secured by real estate:
	Construction, land development and other land loans							39,075				2,506				42,486				8,445			92,512
	Secured by 1-4 family residential properties							33,810				2,983				17,422				538			54,753
	Secured by nonfarm, nonresidential properties							184,594				9,027				88,952				4,563			287,136
	Other							28,156				1,437				4,071				184			33,848
	Commercial and industrial loans							116,818				2,248				24,084				6,039			149,189
	Consumer loans							21				-				-				-			21
	Other loans							21,881				-				882				1,306			24,069
	Total noncovered loans							424,355				18,201				177,897				21,075			641,528
	Total acquired loans						$	433,015			$	18,902			$	186,787			$	22,494		$	661,198

			Consumer Loans
							Past Due				Past Due											Total
			Current				30-89 Days				90 Days or More				Nonaccrual				Subtotal			Acquired Loans
	Covered Loans: (1)
	Loans secured by real estate:
	Construction, land development and other land loans		$	133			$	77			$	28			$	-			$	238		$	2,363
	Secured by 1-4 family residential properties			11,179				428				952				-				12,559			16,416
	Secured by nonfarm, nonresidential properties			495				-				172				-				667			10,945
	Other			617				342				-				-				959			2,644
	Commercial and industrial loans			-				-				-				-				-			394
	Consumer loans			119				-				-				-				119			119
	Other loans			4				-				-				-				4			1,335
	Total covered loans			12,547				847				1,152				-				14,546			34,216

	Noncovered loans:
	Loans secured by real estate:
	Construction, land development and other land loans			5,813				108				495				-				6,416			98,928
	Secured by 1-4 family residential properties			95,987				3,599				3,466				109				103,161			157,914
	Secured by nonfarm, nonresidential properties			-				-				-				-				-			287,136
	Other			100				-				-				-				100			33,948
	Commercial and industrial loans			306				-				-				-				306			149,495
	Consumer loans			18,076				239				92				-				18,407			18,428
	Other loans			72				-				-				-				72			24,141
	Total noncovered loans			120,354				3,946				4,053				109				128,462			769,990
	Total acquired loans		$	132,901			$	4,793			$	5,205			$	109			$	143,008		$	804,206

	-1	Total dollar balances are presented in this table; however, these loans are covered by the loss-share agreement with the FDIC. TNB is at risk for only 20% of the losses incurred on these loans.

			31-Dec-12
							Commercial Loans
							Pass -				Special Mention -				Substandard -				Doubtful -
							Categories 1-6				Category 7				Category 8				Category 9			Subtotal
	Covered Loans: (1)
	Loans secured by real estate:
Construction, land development and other land loans						$	1,341			$	18			$	1,489			$	744		$	3,592
Secured by 1-4 family residential properties							3,128				810				2,940				85			6,963
Secured by nonfarm, nonresidential properties							5,857				1,052				9,839				798			17,546
Other							443				318				1,231				-			1,992
Commercial and industrial loans							82				458				207				-			747
Consumer loans							-				-				-				-			-
Other loans							245				-				345				535			1,125
Total covered loans							11,096				2,656				16,051				2,162			31,965

Noncovered loans:
Loans secured by real estate:
Construction, land development and other land loans							3,259				119				4,915				921			9,214
Secured by 1-4 family residential properties							7,325				-				3,708				23			11,056
Secured by nonfarm, nonresidential properties							22,453				3,596				18,682				831			45,562
Other							236				-				417				-			653
Commercial and industrial loans							2,853				89				93				-			3,035
Consumer loans							-				-				-				-			-
Other loans							86				-				-				-			86
Total noncovered loans							36,212				3,804				27,815				1,775			69,606
Total acquired loans						$	47,308			$	6,460			$	43,866			$	3,937		$	101,571

		Consumer Loans
						Past Due				Past Due											Total
		Current				30-89 Days				90 Days or More				Nonaccrual				Subtotal			Acquired Loans
Covered Loans: (1)
Loans secured by real estate:
Construction, land development and other land loans		$	306			$	26			$	-			$	-			$	332		$	3,924
Secured by 1-4 family residential properties			14,311				1,028				1,650				38				17,027			23,990
Secured by nonfarm, nonresidential properties			692				169				-				-				861			18,407
Other			1,468				48				52				7				1,575			3,567
Commercial and industrial loans			-				-				-				-				-			747
Consumer loans			177				-				-				-				177			177
Other loans			104				-				-				-				104			1,229
Total covered loans			17,058				1,271				1,702				45				20,076			52,041

Noncovered loans:
Loans secured by real estate:
Construction, land development and other land loans			802				-				40				-				842			10,056
Secured by 1-4 family residential properties			7,715				357				215				61				8,348			19,404
Secured by nonfarm, nonresidential properties			87				-				-				-				87			45,649
Other			16				-				-				-				16			669
Commercial and industrial loans			-				-				-				-				-			3,035
Consumer loans			2,394				164				52				-				2,610			2,610
Other loans			14				-				-				-				14			100
Total noncovered loans			11,028				521				307				61				11,917			81,523
Total acquired loans		$	28,086			$	1,792			$	2,009			$	106			$	31,993		$	133,564

-1	Total dollar balances are presented in this table; however, these loans are covered by the loss-share agreement with the FDIC. TNB is at risk for only 20% of the losses incurred on these loans.
Aging analysis of past due and nonaccrual acquired loans, by class	'
	The following table provides an aging analysis of contractually past due and nonaccrual acquired loans, by class at December 31, 2013 and 2012 ($ in thousands):

			31-Dec-13
			Past Due
							90 Days												Current			Total Acquired
			30-89 Days				or More (1)				Total				Nonaccrual (2)				Loans			Loans
	Covered loans:
	Loans secured by real estate:
	Construction, land development and other land loans		$	87			$	553			$	640			$	445			$	1,278		$	2,363
	Secured by 1-4 family residential properties			873				1,142				2,015				-				14,401			16,416
	Secured by nonfarm, nonresidential properties			1,905				793				2,698				-				8,247			10,945
	Other			710				2				712				-				1,932			2,644
	Commercial and industrial loans			13				-				13				41				340			394
	Consumer loans			-				-				-				-				119			119
	Other loans			-				646				646				-				689			1,335
	Total covered loans			3,588				3,136				6,724				486				27,006			34,216

	Noncovered loans:
	Loans secured by real estate:
	Construction, land development and other land loans			2,116				31,744				33,860				67				65,001			98,928
	Secured by 1-4 family residential properties			5,067				7,589				12,656				116				145,142			157,914
	Secured by nonfarm, nonresidential properties			7,978				15,421				23,399				461				263,276			287,136
	Other			40				1,922				1,962				33				31,953			33,948
	Commercial and industrial loans			743				3,387				4,130				1,170				144,195			149,495
	Consumer loans			239				92				331				-				18,097			18,428
	Other loans			-				153				153				20				23,968			24,141
	Total noncovered loans			16,183				60,308				76,491				1,867				691,632			769,990
	Total acquired loans		$	19,771			$	63,444			$	83,215			$	2,353			$	718,638		$	804,206

	(1) - Past due 90 days or more but still accruing interest.
	(2) - Acquired loans not accounted for under FASB ASC Topic 310-30.

			31-Dec-12
			Past Due
							90 Days												Current			Total Acquired
			30-89 Days				or More (1)				Total				Nonaccrual (2)				Loans			Loans
	Covered loans:
	Loans secured by real estate:
	Construction, land development and other land loans		$	240			$	246			$	486			$	445			$	2,993		$	3,924
	Secured by 1-4 family residential properties			1,705				1,883				3,588				234				20,168			23,990
	Secured by nonfarm, nonresidential properties			3,953				1,539				5,492				-				12,915			18,407
	Other			221				52				273				9				3,285			3,567
	Commercial and industrial loans			94				4				98				39				610			747
	Consumer loans			-				-				-				-				177			177
	Other loans			-				-				-				-				1,229			1,229
	Total covered loans			6,213				3,724				9,937				727				41,377			52,041

	Noncovered loans:
	Loans secured by real estate:
	Construction, land development and other land loans			-				3,622				3,622				-				6,434			10,056
	Secured by 1-4 family residential properties			458				1,392				1,850				243				17,311			19,404
	Secured by nonfarm, nonresidential properties			3,526				1,217				4,743				133				40,773			45,649
	Other			30				44				74				-				595			669
	Commercial and industrial loans			217				23				240				-				2,795			3,035
	Consumer loans			164				52				216				-				2,394			2,610
	Other loans			-				-				-				-				100			100
	Total noncovered loans			4,395				6,350				10,745				376				70,402			81,523
	Total acquired loans		$	10,608			$	10,074			$	20,682			$	1,103			$	111,779		$	133,564

	(1) - Past due 90 days or more but still accruing interest.
	(2) - Acquired loans not accounted for under FASB ASC Topic 310-30.
BancTrust Financial Group, Inc. [Member]	'
Business Acquisition [Line Items]	'
Fair value of acquired loans	'
	The following table presents the adjusted fair value of loans acquired as of the date of the BancTrust acquisition ($ in thousands):

	At acquisition date:		15-Feb-13
	Contractually required principal and interest		$	1,256,669
	Nonaccretable difference			201,324
	Cash flows expected to be collected			1,055,345
	Accretable yield			98,394
	FASB ASC Topic 310-20 discount			12,716
	Fair value of loans at acquisition		$	944,235
Bay Bank and Trust Company [Member]	'
Business Acquisition [Line Items]	'
Fair value of acquired loans	'
	The following table presents the fair value of loans acquired as of the date of the Bay Bank acquisition ($ in thousands):

	At acquisition date:		16-Mar-12
	Contractually required principal and interest		$	134,615
	Nonaccretable difference			20,161
	Cash flows expected to be collected			114,454
	Accretable yield			15,538
	FASB ASC Topic 310-20 discount			1,002
	Fair value of loans at acquisition		$	97,914

Premises_and_Equipment_Net_Tab

Premises and Equipment, Net (Tables)	12 Months Ended
Premises and Equipment, Net (Tables)	Dec. 31, 2013
Premises and Equipment, Net [Abstract]	'
Premises and equipment	'
	At December 31, 2013 and 2012, premises and equipment are summarized as follows ($ in thousands):

		2013		2012
	Land	$	58,132	$	40,327
	Buildings and leasehold improvements		199,976		163,638
	Furniture and equipment		154,633		142,771
	Total cost of premises and equipment		412,741		346,736
	Less accumulated depreciation and amortization		205,458		191,895
	Premises and equipment, net	$	207,283	$	154,841

Mortgage_Banking_Tables

Mortgage Banking (Tables)	12 Months Ended
Mortgage Banking (Tables)	Dec. 31, 2013
Mortgage Banking [Abstract]	'
Schedule of activity in mortgage servicing rights	'
	The activity in MSR is detailed in the table below ($ in thousands):

		2013			2012
	Balance at beginning of period	$	47,341		$	43,274
	Origination of servicing assets		18,481			23,253
	Change in fair value:
	Due to market changes		11,818			(9,378	)
	Due to runoff		(9,806	)		(9,808	)
	Balance at end of period	$	67,834		$	47,341

Goodwill_and_Identifiable_Inta1

Goodwill and Identifiable Intangible Assets (Tables)	12 Months Ended
Goodwill and Identifiable Intangible Assets (Tables)	Dec. 31, 2013
Goodwill and Identifiable Intangible Assets [Abstract]	'
Goodwill by segment	'
	The table below illustrates goodwill by segment for the years ended December 31, 2013 and 2012 ($ in thousands).


		General
		Banking		Insurance		Total
	Balance as of January 1, 2013 and 2012	$	246,736	$	44,368	$	291,104
	Goodwill from acquisitions during 2013		81,747		-		81,747
	Balance as of December 31, 2013	$	328,483	$	44,368	$	372,851
Schedule of identifiable intangible assets	'
	At December 31, 2013 and 2012, identifiable intangible assets consisted of the following ($ in thousands):

		2013						2012
		Gross Carrying		Accumulated		Net Carrying		Gross Carrying		Accumulated		Net Carrying
		Amount		Amortization		Amount		Amount		Amortization		Amount

	Core deposit intangibles	$	85,824	$	46,437	$	39,387	$	52,327	$	38,532	$	13,795
	Insurance intangibles		11,693		9,967		1,726		11,693		9,188		2,505
	Banking charters		1,325		678		647		1,325		612		713
	Borrower relationship intangible		690		460		230		690		397		293
	Total	$	99,532	$	57,542	$	41,990	$	66,035	$	48,729	$	17,306

	The following table illustrates the carrying amounts and remaining weighted-average amortization periods of identifiable intangible assets ($ in thousands):

		2013
				Remaining
				Weighted-
				Average
		Net Carrying		Amortization
		Amount		Period in Years

	Core deposit intangibles	$	39,387		8.5
	Insurance intangibles		1,726		5.5
	Banking charters		647		9.7
	Borrower relationship intangible		230		3.7
	Total	$	41,990		8.4

Other_Real_Estate_and_Covered_1

Other Real Estate and Covered Other Real Estate (Tables)	12 Months Ended
Other Real Estate and Covered Other Real Estate (Tables)	Dec. 31, 2013
Other Real Estate and Covered Other Real Estate [Abstract]	'
Changes and losses, net on non-covered other real estate	'
	For the years ended December 31, 2013, 2012 and 2011, changes and gains (losses), net on other real estate, excluding covered other real estate, were as follows ($ in thousands):

		2013			2012			2011
	Balance at beginning of period	$	78,189		$	79,053		$	86,704
	Additions (1)		80,256			38,894			56,929
	Disposals		(45,545	)		(33,155	)		(50,724	)
	Writedowns		(6,361	)		(6,603	)		(13,856	)
	Balance at end of period	$	106,539		$	78,189		$	79,053

	(Loss) gain, net on the sale of other real estate included in ORE/Foreclosure expense	$	(881	)	$	(279	)	$	1,605

	(1) Includes $40.1 million of other real estate acquired from BancTrust on February 15, 2013, and $2.6 million of other real estate acquired from Bay Bank on March 16, 2012.
Other real estate by type of property	'
	At December 31, 2013 and 2012, other real estate, excluding covered other real estate, by type of property consisted of the following ($ in thousands):

		2013			2012
	Construction, land development and other land properties	$	65,273		$	46,957
	1-4 family residential properties		14,696			8,134
	Nonfarm, nonresidential properties		26,433			22,760
	Other real estate properties		137			338
	Total other real estate, excluding covered other real estate	$	106,539		$	78,189
Other real estate by geographic location	'
	At December 31, 2013 and 2012, other real estate, excluding covered other real estate, by geographic location consisted of the following ($ in thousands):

		2013			2012
	Alabama	$	25,912		$	-
	Florida		34,480			18,569
	Mississippi (1)		22,766			27,771
	Tennessee (2)		12,892			17,589
	Texas		10,489			14,260
	Total other real estate, excluding covered other real estate	$	106,539		$	78,189

	(1) - Mississippi includes Central and Southern Mississippi Regions
	(2) - Tennessee includes Memphis, Tennessee and Northern Mississippi Regions
Changes, gains and losses, net on covered other real estate	'
	For the years ended December 31, 2013, 2012 and 2011, changes and gains, net on covered other real estate were as follows ($ in thousands):

		2013			2012			2011
	Balance at beginning of period	$	5,741		$	6,331		$	-
	Covered other real estate acquired (1)		-			-			7,485
	Transfers from covered loans		1,934			1,424			632
	FASB ASC 310-30 adjustment for the residual recorded investment		(345	)		(112	)		(264	)
	Net transfers from covered loans		1,589			1,312			368
	Disposals		(1,442	)		(1,631	)		(1,489	)
	Writedowns		(780	)		(271	)		(33	)
	Balance at end of period	$	5,108		$	5,741		$	6,331

	Gain, net on the sale of covered other real estate included in ORE/Foreclosure expenses	$	119		$	485		$	286

	(1) Covered other real estate acquired from Heritage on April 15, 2011.
Covered other real estate by type of property	'
	At December 31, 2013 and 2012, covered other real estate consisted of the following types of properties ($ in thousands):

		2013			2012
	Construction, land development and other land properties	$	733		$	1,284
	1-4 family residential properties		1,981			1,306
	Nonfarm, nonresidential properties		2,394			3,151
	Total covered other real estate	$	5,108		$	5,741

FDIC_Indemnification_Asset_Tab

FDIC Indemnification Asset (Tables)	12 Months Ended
FDIC Indemnification Asset (Tables)	Dec. 31, 2013
FDIC Indemnification Asset [Abstract]	'
Changes in FDIC indemnification asset	'
	For the years ended December 31, 2013, 2012 and 2011, changes in the FDIC indemnification asset were as follows ($ in thousands):

		2013			2012			2011
	Balance at January 1,	$	21,774		$	28,348		$	-
	Additions from acquisition		-			-			33,333
	(Amortization) accretion		(2,469	)		245			185
	Transfers to FDIC claims		(851	)		(2,544	)		(986	)
	Change in expected cash flows		(3,472	)		(3,761	)		(4,157	)
	Change in FDIC true-up provision		(635	)		(514	)		(27	)
	Balance at December 31,	$	14,347		$	21,774		$	28,348

Deposits_Tables

Deposits (Tables)	12 Months Ended
Deposits (Tables)	Dec. 31, 2013
Deposits [Abstract]	'
Deposits summary	'
	At December 31, 2013 and 2012, deposits consisted of the following ($ in thousands):

		2013		2012
	Noninterest-bearing demand deposits	$	2,663,503	$	2,254,211
	Interest-bearing demand		1,923,701		1,481,182
	Savings		2,997,294		2,322,280
	Time		2,275,404		1,838,844
	Total	$	9,859,902	$	7,896,517
Interest expense on deposits by type	'
	Interest expense on deposits by type consisted of the following for 2013, 2012 and 2011 ($ in thousands):

		2013		2012		2011
	Interest-bearing demand	$	3,948	$	3,975	$	7,077
	Savings		3,889		6,004		8,144
	Time		11,881		14,625		21,073
	Total	$	19,718	$	24,604	$	36,294
Maturities on outstanding time deposits of $100,000 or more	'
	The maturities on outstanding time deposits of $100,000 or more at December 31, 2013 and 2012 are as follows ($ in thousands):

		2013		2012
	3 months or less	$	242,757	$	161,806
	Over 3 months through 6 months		208,863		142,026
	Over 6 months through 12 months		312,189		221,056
	Over 12 months		208,208		208,600
	Total	$	972,017	$	733,488
Maturities of interest-bearing deposits	'
	The maturities of interest-bearing deposits at December 31, 2013, are as follows ($ in thousands):

	2014	$	1,808,342
	2015		277,273
	2016		83,288
	2017		47,550
	2018 and thereafter		58,951
	Total time deposits		2,275,404
	Interest-bearing deposits with no stated maturity		4,920,995
	Total interest-bearing deposits	$	7,196,399

Borrowings_Tables

Borrowings (Tables)	12 Months Ended
Borrowings (Tables)	Dec. 31, 2013
Borrowings [Abstract]	'
Short-term borrowings	'
	At December 31, 2013 and 2012, short-term borrowings consisted of the following ($ in thousands):

		2013		2012
	FHLB advances	$	2,062	$	-
	Serviced GNMA loans eligible for repurchase		38,036		59,775
	Other		26,287		27,145
	Total short-term borrowings	$	66,385	$	86,920

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
Income Taxes (Tables)	Dec. 31, 2013
Income Taxes [Abstract]	'
Income tax provision	'
	The income tax provision included in the statements of income is as follows ($ in thousands):

	Current	2013			2012			2011
	Federal	$	14,537		$	48,186		$	46,749
	State		1,237			2,366			4,712
	Deferred
	Federal		18,394			(7,349	)		(8,414	)
	State		2,769			(1,103	)		(1,269	)
	Income tax provision	$	36,937		$	42,100		$	41,778
Income tax reconciliation	'
	The income tax provision differs from the amount computed by applying the statutory federal income tax rate of 35% to income before income taxes as a result of the following ($ in thousands):

		2013			2012			2011
	Income tax computed at statutory tax rate	$	53,899		$	55,784		$	52,017
	Tax exempt interest		(5,222	)		(5,150	)		(5,244	)
	Nondeductible interest expense		121			144			153
	State income taxes, net		2,604			821			2,238
	Income tax credits		(15,755	)		(9,255	)		(7,633	)
	Other		1,290			(244	)		247
	Income tax provision	$	36,937		$	42,100		$	41,778

Deferred tax assets and liabilities	'
	Temporary differences between the financial statement carrying amounts and the tax basis of assets and liabilities gave rise to the following net deferred tax assets at December 31, 2013 and 2012, which are included in other assets ($ in thousands):

	Deferred tax assets	2013			2012
	Loan purchase accounting	$	63,048		$	7,020
	Other real estate		47,981			30,001
	Allowance for loan losses		29,102			32,441
	Deferred compensation		20,000			5,055
	Securities		17,741			-
	Realized built in losses		9,182			-
	Pension and other postretirement benefit plans		7,511			32,507
	Non accrual loans		4,452			1,178
	Stock-based compensation		3,357			4,723
	Other		14,771			12,025
	Gross deferred tax asset		217,145			124,950
	Valuation allowance		(16,000	)		-
	Deferred tax asset net of valuation allowance		201,145			124,950

	Deferred tax liabilities
	Goodwill and other identifiable intangibles		29,809			18,707
	Premises and equipment		21,543			17,339
	Mortgage servicing rights		8,145			1,737
	Leases		3,290			-
	Unrealized gains on securities available for sale		1,969			27,834
	Securities		1,270			2,055
	Other		4,642			2,276
	Gross deferred tax liability		70,668			69,948
	Net deferred tax asset	$	130,477		$	55,002
Changes in unrecognized tax benefits	'
	The following table provides a summary of the changes during the 2013 calendar year in the amount of unrecognized tax benefits that are included in other liabilities in the consolidated balance sheet ($ in thousands):

	Balance at January 1, 2013	$	1,864

	Increases due to tax positions taken during the current year		78
	Decreases due to tax positions taken during a prior year		(8	)
	Decreases due to the lapse of applicable statute of limitations during the current year		(155	)

	Balance at December 31, 2013	$	1,779

	Accrued interest, net of federal benefit, at December 31, 2013	$	435

	Unrecognized tax benefits that would impact the effective tax rate,if recognized, at December 31, 2013	$	1,173

Defined_Benefit_and_Other_Post1

Defined Benefit and Other Postretirement Benefits (Tables)	12 Months Ended
Defined Benefit and Other Postretirement Benefits (Tables)	Dec. 31, 2013
Defined Benefit Plans [Member]	'
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	'
Plan benefit obligation, plan assets and funded status of the plan	'
	The following tables present information regarding the benefit obligation, plan assets, funded status, amounts recognized in accumulated other comprehensive income (loss), net periodic benefit cost and other statistical disclosures for Trustmark’s plans (Trustmark Capital Accumulation Plan and BancTrust Pension Plan) ($ in thousands):

		2013			2012
	Change in benefit obligation
	Benefit obligation, beginning of year	$	103,235		$	100,556
	Benefit obligation from business combination		43,138			-
	Service cost		595			547
	Interest cost		4,758			3,942
	Actuarial (gain) loss		(8,060	)		4,559
	Benefits paid		(14,692	)		(6,369	)
	Benefit obligation, end of year	$	128,974		$	103,235

	Change in plan assets
	Fair value of plan assets, beginning of year	$	76,660		$	72,304
	Fair value of plan assets from business combination		40,391			-
	Actual return on plan assets		21,661			9,178
	Employer contributions		2,122			1,547
	Benefit payments		(14,692	)		(6,369	)
	Fair value of plan assets, end of year	$	126,142		$	76,660

	Funded status at end of year - net liability	$	(2,832	)	$	(26,575	)

	Amounts recognized in accumulated other comprehensive income (loss)
	Net loss - amount recognized	$	15,436		$	45,178
Net periodic benefit Cost	'

		Years Ended December 31,
		2013			2012			2011
	Net periodic benefit cost
	Service cost	$	595		$	547		$	522
	Interest cost		4,758			3,942			4,460
	Expected return on plan assets		(7,720	)		(5,983	)		(5,882	)
	Recognized net loss due to settlement		2,225			-			-
	Recognized net actuarial loss		5,516			5,225			4,127
	Net periodic benefit cost	$	5,374		$	3,731		$	3,227

	Other changes in plan assets and benefit obligation recognized in other comprehensive income (loss), before taxes
	Net (gain) loss - Total recognized in other comprehensive income (loss)	$	(29,742	)	$	(3,861	)	$	9,707

	Total recognized in net periodic benefit cost and other comprehensive income (loss)	$	(24,368	)	$	(130	)	$	12,934

	Weighted-average assumptions as of end of year
	Discount rate for benefit obligation		4.3	%		3.5	%		4	%
	Discount rate for net periodic benefit cost		3.5	%		4	%		5.05	%
	Expected long-term return on plan assets		7.5	%		8	%		8	%
	Rate of compensation increase		3	%		3	%		3	%
Weighted-average asset allocation	'
	The weighted-average asset allocations by asset category for Trustmark’s plans at December 31, 2013 and 2012 are as follows:

		2013			2012
	Money market fund		5.2	%		1.3	%
	Fixed income mutual funds		17.6	%		19.8	%
	Equity mutual funds		58.4	%		63.2	%
	Equity securities		18.7	%		15.5	%
	Fixed income hedge fund		0.1	%		0.2	%
	Total		100	%		100	%
Plan assets measured at fair value	'
	The following table sets forth by level, within the fair value hierarchy, the plans’ assets measured at fair value at December 31, 2013 and 2012 ($ in thousands):

		31-Dec-13
		Total			Level 1			Level 2			Level 3
	Money market fund	$	6,563		$	-		$	6,563		$	-
	Fixed income mutual funds		22,225			22,225			-			-
	Equity mutual funds		73,608			73,608			-			-
	Equity securities		23,583			23,583			-			-
	Fixed income hedge fund		163			-			-			163
	Total assets at fair value	$	126,142		$	119,416		$	6,563		$	163

		31-Dec-12
		Total			Level 1			Level 2			Level 3
	Money market fund	$	1,028		$	-		$	1,028		$	-
	Fixed income mutual funds		15,145			15,145			-			-
	Equity mutual funds		48,414			48,414			-			-
	Equity securities		11,910			11,910			-			-
	Fixed income hedge fund		163			-			-			163
	Total assets at fair value	$	76,660		$	75,469		$	1,028		$	163
Changes in fair value of plan level three assets	'
	The following table sets forth a summary of changes in fair value of the Level 3 plan assets for the years ended December 31, 2013 and 2012 ($ in thousands):

		Fixed Income Hedge Fund
	Balance, January 1, 2012	$	301
	Change in fair value during 2012		(138	)
	Balance, December 31, 2013 and 2012	$	163
Estimated future benefit payments and other disclosures	'
	The following table presents the expected benefit payments, which reflect expected future service, for Trustmark’s plans ($ in thousands):

	Year	Amount
	2014	$	12,220
	2015		10,841
	2016		9,576
	2017		9,555
	2018		8,133
	2019 - 2023		40,755
Supplemental Retirement Plans [Member]	'
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	'
Plan benefit obligation, plan assets and funded status of the plan	'
	Trustmark maintains a nonqualified supplemental retirement plan covering directors who elected to defer fees, key executive officers and senior officers. The plan provides for defined death benefits and/or retirement benefits based on a participant's covered salary. Trustmark has acquired life insurance contracts on the participants covered under the plan, which may be used to fund future payments under the plan. The measurement date for the plan is December 31. As a result of the BancTrust acquisition on February 15, 2013, Trustmark acquired a nonqualified supplemental retirement plan, which was frozen prior to the acquisition date. The following tables present information regarding the benefit obligation, plan assets, funded status, amounts recognized in accumulated other comprehensive income (loss), net periodic benefit cost and other statistical disclosures for the Trustmark and BancTrust nonqualified supplemental retirement plans (collectively the "supplemental retirement plans") ($ in thousands):

		December 31,
		2013			2012
	Change in benefit obligation
	Benefit obligation, beginning of year	$	56,619		$	52,646
	Benefit obligation from business combination		1,658			-
	Service cost		597			679
	Interest cost		1,943			2,067
	Actuarial (gain) loss		(4,187	)		3,368
	Benefits paid		(4,141	)		(2,339	)
	Prior service cost due to amendment		-			198
	Benefit obligation, end of year	$	52,489		$	56,619

	Change in plan assets
	Fair value of plan assets, beginning of year	$	-		$	-
	Employer contributions		4,141			2,339
	Benefit payments		(4,141	)		(2,339	)
	Fair value of plan assets, end of year	$	-		$	-

	Funded status at end of year - net liability	$	(52,489	)	$	(56,619	)

	Amounts recognized in accumulated other comprehensive income (loss)
	Net loss	$	14,509		$	19,733
	Prior service cost		2,110			2,360
	Amounts recognized	$	16,619		$	22,093
Net periodic benefit Cost	'

		Years Ended December 31,
		2013			2012			2011
	Net periodic benefit cost
	Service cost	$	597		$	679		$	589
	Interest cost		1,943			2,067			2,276
	Amortization of prior service cost		250			250			236
	Recognized net actuarial loss		1,038			861			495
	Net periodic benefit cost	$	3,828		$	3,857		$	3,596

	Other changes in plan assets and benefit obligation recognized in other comprehensive income (loss), before taxes
	Net (gain) loss	$	(5,224	)	$	2,507		$	5,336
	Prior service cost		-			198			1,192
	Amortization of prior service cost		(250	)		(250	)		(236	)
	Total recognized in other comprehensive income (loss)	$	(5,474	)	$	2,455		$	6,292
	Total recognized in net periodic benefit cost and other comprehensive income (loss)	$	(1,646	)	$	6,312		$	9,888

	Weighted-average assumptions as of end of year
	Discount rate for benefit obligation		4.3	%		3.5	%		4	%
	Discount rate for net periodic benefit cost		3.5	%		4	%		5.05	%
Estimated future benefit payments and other disclosures	'
	The following supplemental retirement plans’ benefit payments are expected to be paid in the following years ($ in thousands):

	2014	$	2,735
	2015		2,940
	2016		3,186
	2017		3,491
	2018		3,592
	2019 - 2023		19,004

Stock_and_Incentive_Compensati1

Stock and Incentive Compensation Plans (Tables)	12 Months Ended
Stock and Incentive Compensation Plans (Tables)	Dec. 31, 2013
Stock and Incentive Compensation Plans [Abstract]	'
Stock option activity	'
	The following table summarizes Trustmark’s stock option activity for 2013, 2012 and 2011:
			2013								2012								2011
							Average								Average								Average
							Option								Option								Option
	Options		Shares				Price				Shares				Price				Shares				Price
	Outstanding, beginning of year			699,600			$	27.58				1,205,100			$	27.31				1,311,925			$	27.03
	Granted			-				-				-				-				-				-
	Exercised			(187,300	)			26.96				(11,125	)			24.09				(69,525	)			21.68
	Expired			(406,850	)			27.9				(494,375	)			27.01				(36,000	)			27.71
	Forfeited			-				-				-				-				(1,300	)			31.55
	Outstanding, end of year			105,450				27.43				699,600				27.58				1,205,100				27.31

	Exercisable, end of year			105,450				27.43				699,600				27.58				1,205,100				27.31

	Aggregate Intrinsic Value
	Outstanding, end of year		$	-							$	-							$	44,365
	Exercisable, end of year		$	-							$	-							$	44,365
Stock options by ranges of exercise prices	'
	The following table presents information on stock options by ranges of exercise prices at December 31, 2013:
	Options Outstanding																Options Exercisable
									Weighted-				Weighted-								Weighted-				Weighted-
					Outstanding				Average				Average				Exercisable				Average				Average
	Range of				December 31,				Remaining Years				Exercise				December 31,				Remaining Years				Exercise
	Exercise Prices				2013				To Expiration				Price				2013				To Expiration				Price
	$	25.88 - $29.11				99,450				0.3			$	27.31				99,450				0.3			$	27.31
	$	29.11 - $32.35				6,000				0.2				29.38				6,000				0.2				29.38
						105,450				0.3				27.43				105,450				0.3				27.43
Restricted stock grants	'
	The following table summarizes Trustmark’s performance award activity during years ended December 31, 2013, 2012 and 2011:

			2013								2012								2011
							Weighted-								Weighted-								Weighted-
							Average								Average								Average
							Grant-Date								Grant-Date								Grant-Date
			Shares				Fair Value				Shares				Fair Value				Shares				Fair Value
	Nonvested shares, beginning of year			159,583			$	24.26				179,421			$	20.3				210,797			$	20.3
	Granted			62,119				23.65				55,295				25.66				53,863				25.4
	Released from restriction			(54,784	)			24.15				(72,632	)			21.38				(84,338	)			20
	Forfeited			(6,398	)			25.42				(2,501	)			24.7				(901	)			23.82
	Nonvested shares, end of year			160,520				25.2				159,583				24.26				179,421				20.3

	The following table summarizes Trustmark’s time-vested award activity during years ended December 31, 2013, 2012 and 2011:

			2013								2012								2011
							Weighted-								Weighted-								Weighted-
							Average								Average								Average
							Grant-Date								Grant-Date								Grant-Date
			Shares				Fair Value				Shares				Fair Value				Shares				Fair Value
	Nonvested shares, beginning of year			317,573			$	23.28				334,356			$	21.04				343,469			$	20.33
	Granted			112,964				24.47				141,616				24.66				157,178				24.15
	Released from restriction			(122,727	)			24.4				(151,331	)			23.14				(160,447	)			20.46
	Forfeited			(16,176	)			25.14				(7,068	)			24.14				(5,844	)			20.17
	Nonvested shares, end of year			291,634				24.48				317,573				23.28				334,356				21.04
Compensation expense for all stock and incentive plans	'
	The following table presents information regarding compensation expense for all stock and incentive plans for the periods presented ($ in thousands):

																			Weighted
																			Average Life
			Recognized Compensation Expense												Unrecognized				of Unrecognized
			for Years Ended December 31,												Compensation				Compensation
			2013				2012				2011				Expense				Expense

	Stock option-based awards		$	-			$	-			$	100			$	-				-
	Performance awards			825				868				855				955				1.7
	Time-vested awards			2,774				3,105				2,835				3,102				1.8
	RSU award			-				-				184				-				-
	Total stock and incentive plan compensation expense		$	3,599			$	3,973			$	3,974			$	4,057

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	12 Months Ended
Commitments and Contingencies (Tables)	Dec. 31, 2013
Commitments and Contingencies [Abstract]	'
Future minimum rental commitments under noncancellable operating leases	'
	Trustmark currently has operating lease commitments for banking premises and equipment, which expire from 2014 to 2029. It is expected that certain leases will be renewed, or equipment replaced, as leases expire. Rental expense totaled $8.4 million in 2013, $7.4 million in 2012 and $7.5 million in 2011. At December 31, 2013, future minimum rental commitments under noncancellable operating leases are as follows ($ in thousands):

	Year	Amount
	2014	$	6,787
	2015		5,503
	2016		3,340
	2017		2,914
	2018		2,629
	Thereafter		9,445
	Total	$	30,618

Shareholders_Equity_Tables

Shareholders' Equity (Tables)	12 Months Ended
Shareholders' Equity (Tables)	Dec. 31, 2013
Shareholders' Equity [Abstract]	'
Table of actual regulatory capital amounts and ratios	'
	Trustmark's and TNB's actual regulatory capital amounts and ratios are presented in the table below ($ in thousands):

														Minimum Regulatory
		Actual						Minimum Regulatory						Provision to be
		Regulatory Capital						Capital Required						Well-Capitalized
		Amount			Ratio			Amount			Ratio			Amount			Ratio
	At December 31, 2013:
	Total Capital (to Risk Weighted Assets)
	Trustmark Corporation	$	1,122,904			14.18	%	$	633,310			8	%		n/	a		n/	a
	Trustmark National Bank		1,076,391			13.74	%		626,672			8	%	$	783,340			10	%

	Tier 1 Capital (to Risk Weighted Assets)
	Trustmark Corporation	$	1,026,858			12.97	%	$	316,655			4	%		n/	a		n/	a
	Trustmark National Bank		982,925			12.55	%		313,336			4	%	$	470,004			6	%

	Tier 1 Capital (to Average Assets)
	Trustmark Corporation	$	1,026,858			9.06	%	$	340,115			3	%		n/	a		n/	a
	Trustmark National Bank		982,925			8.76	%		336,499			3	%	$	560,831			5	%

	At December 31, 2012:
	Total Capital (to Risk Weighted Assets)
	Trustmark Corporation	$	1,157,838			17.22	%	$	537,861			8	%		n/	a		n/	a
	Trustmark National Bank		1,119,438			16.85	%		531,577			8	%	$	664,472			10	%

	Tier 1 Capital (to Risk Weighted Assets)
	Trustmark Corporation	$	1,043,865			15.53	%	$	268,930			4	%		n/	a		n/	a
	Trustmark National Bank		1,007,775			15.17	%		265,789			4	%	$	398,683			6	%

	Tier 1 Capital (to Average Assets)
	Trustmark Corporation	$	1,043,865			10.97	%	$	285,556			3	%		n/	a		n/	a
	Trustmark National Bank		1,007,775			10.72	%		281,984			3	%	$	469,974			5	%
Components of accumulated other comprehensive income (loss) and the related tax effects	'
	The following table presents the components of accumulated other comprehensive income (loss) and the related tax effects allocated to each component for the years ended December 31, 2013, 2012 and 2011 ($ in thousands). Reclassification adjustments related to securities available for sale are included in securities gains, net in the accompanying consolidated statements of income. The amortization of prior service cost and recognized net actuarial loss on pension and other postretirement benefit plans are included in the computation of net periodic benefit cost (see Note 15 – Defined Benefit and Other Postretirement Benefits for additional details).

		Before Tax			Tax (Expense)			Net of Tax
		Amount			Benefit			Amount
	Year Ended December 31, 2013:
	Securities available for sale and transferred securities:
	Unrealized holding losses arising during the period	$	(67,135	)	$	25,679		$	(41,456	)
	Net unrealized holding loss on securities transferred to held to maturity		(46,383	)		17,741			(28,642	)
	Reclassification adjustment for net gains realized in net income		(485	)		186			(299	)
	Total securities available for sale and transferred securities		(114,003	)		43,606			(70,397	)
	Pension and other postretirement benefit plans:
	Net change in prior service costs		251			(96	)		155
	Recognized net loss due to settlement		2,225			(851	)		1,374
	Recognized net actuarial loss		32,742			(12,524	)		20,218
	Total pension and other postretirement benefit plans		35,218			(13,471	)		21,747
	Derivatives:
	Change in accumulated gain on effective cash flow hedge derivatives		2,468			(944	)		1,524
	Total other comprehensive loss	$	(76,317	)	$	29,191		$	(47,126	)

	Year Ended December 31, 2012:
	Securities available for sale:
	Unrealized holding gains arising during the period	$	97		$	(37	)	$	60
	Reclassification adjustment for net gains realized in net income		(1,059	)		405			(654	)
	Total securities available for sale		(962	)		368			(594	)
	Pension and other postretirement benefit plans:
	Net change in prior service costs		52			(20	)		32
	Recognized net actuarial loss		1,354			(518	)		836
	Total pension and other postretirement benefit plans		1,406			(538	)		868
	Total other comprehensive income	$	444		$	(170	)	$	274

	Year Ended December 31, 2011:
	Securities available for sale:
	Unrealized holding gains arising during the period	$	39,636		$	(15,161	)	$	24,475
	Reclassification adjustment for net gains realized in net income		(80	)		31			(49	)
	Total securities available for sale		39,556			(15,130	)		24,426
	Pension and other postretirement benefit plans:
	Net change in prior service costs		(957	)		366			(591	)
	Recognized net actuarial gain		(15,041	)		5,753			(9,288	)
	Total pension and other postretirement benefit plans		(15,998	)		6,119			(9,879	)
	Total other comprehensive income	$	23,558		$	(9,011	)	$	14,547
Components of reclassifications out of accumulated other comprehensive income	'
	The following table presents the changes in the balances of each component of accumulated other comprehensive (loss) income for the years ended December 31, 2013, 2012 and 2011 ($ in thousands). All amounts are presented net of tax.

		Securities			Defined			Gains on Cash			Total
		Available for Sale			Benefit			Flow Hedge
		and Transferred			Pension Items
		Securities
	Balance at January 1, 2011	$	21,103		$	(32,529	)	$	-		$	(11,426	)
	Other comprehensive income before reclassification		24,475			(9,879	)		-			14,596
	Amounts reclassified from accumulated other comprehensive income		(49	)		-			-			(49	)
	Net other comprehensive income (loss)		24,426			(9,879	)		-			14,547
	Balance at December 31, 2011		45,529			(42,408	)		-			3,121
	Other comprehensive income before reclassification		60			868			-			928
	Amounts reclassified from accumulated other comprehensive income		(654	)		-			-			(654	)
	Net other comprehensive (loss) income		(594	)		868			-			274
	Balance at December 31, 2012		44,935			(41,540	)		-			3,395
	Other comprehensive income before reclassification		(70,098	)		21,747			1,524			(46,827	)
	Amounts reclassified from accumulated other comprehensive income		(299	)		-			-			(299	)
	Net other comprehensive (loss) income		(70,397	)		21,747			1,524			(47,126	)
	Balance at December 31, 2013	$	(25,462	)	$	(19,793	)	$	1,524		$	(43,731	)

Fair_Value_Tables

Fair Value (Tables)	12 Months Ended
Fair Value (Tables)	Dec. 31, 2013
Fair Value [Abstract]	'
Financial assets and liabilities measured at fair value -recurring basis	'
	The following table summarizes financial assets and financial liabilities measured at fair value on a recurring basis as of December 31, 2013 and 2012, segregated by the level of valuation inputs within the fair value hierarchy utilized to measure fair value ($ in thousands). There were no transfers between fair value levels for the years ended December 31, 2013 and 2012.

			31-Dec-13
			Total			Level 1			Level 2		Level 3
	U.S. Treasury securities		$	502		$	-		$	502	$	-
	U.S. Government agency obligations			169,472			-			169,472		-
	Obligations of states and political subdivisions			171,738			-			171,738		-
	Mortgage-backed securities			1,788,505			-			1,788,505		-
	Asset-backed securities and structured financial products			63,937			-			63,937		-
	Securities available for sale			2,194,154			-			2,194,154		-
	Loans held for sale			149,169			-			149,169		-
	Mortgage servicing rights			67,834			-			-		67,834
	Other assets - derivatives			4,994			(2,579	)		7,447		126
	Other liabilities - derivatives			3,298			581			2,717		-

			31-Dec-12
			Total			Level 1			Level 2		Level 3
	U.S. Government agency obligations		$	105,745		$	-		$	105,745	$	-
	Obligations of states and political subdivisions			215,761			-			215,761		-
	Mortgage-backed securities			2,094,612			-			2,094,612		-
	Asset-backed securities and structured financial products			241,627			-			241,627		-
	Securities available for sale			2,657,745			-			2,657,745		-
	Loans held for sale			257,986			-			257,986		-
	Mortgage servicing rights			47,341			-			-		47,341
	Other assets - derivatives			7,107			(440	)		5,263		2,284
	Other liabilities - derivatives			6,612			545			6,067		-
Changes in level 3 assets measured at fair value on a recurring basis	'
	The changes in Level 3 assets measured at fair value on a recurring basis for the years ended December 31, 2013 and 2012 are summarized as follows ($ in thousands):

			MSR			Other Assets - Derivatives
	Balance, January 1, 2013		$	47,341		$	2,284
	Total net gains included in Mortgage banking, net (1)			2,012			7,754
	Additions			18,481			-
	Sales			-			(9,912	)
	Balance, December 31, 2013		$	67,834		$	126

	The amount of total gains for the period included in		$	11,818		$	735
	earnings that are attributable to the change in unrealized
	gains or losses still held at December 31, 2013


	Balance, January 1, 2012		$	43,274		$	702
	Total net (losses) gains included in Mortgage banking, net (1)			(19,186	)		13,441
	Additions			23,253			-
	Sales			-			(11,859	)
	Balance, December 31, 2012		$	47,341		$	2,284

	The amount of total (losses) gains for the period included in		$	(9,378	)	$	2,317
	earnings that are attributable to the change in unrealized
	gains or losses still held at December 31, 2012

	-1	Total net (losses) gains included in Mortgage banking, net relating to MSR includes changes in fair value due to market changes and due to runoff.
Carrying amounts and estimated fair values of financial instruments	'
	The carrying amounts and estimated fair values of financial instruments at December 31, 2013 and 2012, are as follows ($ in thousands):

			2013						2012
			Carrying			Estimated			Carrying		Estimated
			Value			Fair Value			Value		Fair Value
	Financial Assets:
	Level 2 Inputs:
	Cash and short-term investments		$	353,014		$	353,014		$	238,535	$	238,535
	Securities held to maturity			1,168,728			1,150,833			42,188		46,888
	Level 3 Inputs:
	Net LHFI			5,732,433			5,787,408			5,514,016		5,619,933
	Net acquired loans			794,570			794,570			127,489		127,489
	FDIC indemnification asset			14,347			14,347			21,774		21,774

	Financial Liabilities:
	Level 2 Inputs:
	Deposits			9,859,902			9,866,118			7,896,517		7,904,179
	Short-term liabilities			317,972			317,972			375,749		375,749
	Long-term FHLB advances			8,458			8,474			-		-
	Subordinated notes			49,904			53,387			49,871		53,980
	Junior subordinated debt securities			61,856			40,206			61,856		40,206

Derivative_Financial_Instrumen1

Derivative Financial Instruments (Tables)	12 Months Ended
Derivative Financial Instruments (Tables)	Dec. 31, 2013
Derivative Financial Instruments [Abstract]	'
Fair value of derivative instruments	'
	The following tables disclose the fair value of derivative instruments in Trustmark’s balance sheets as of December 31, 2013 and 2012 as well as the effect of these derivative instruments on Trustmark’s results of operations for the years ended December 31, 2013, 2012 and 2011 ($ in thousands):

		December 31,			December 31,
		2013			2012
	Derivatives in hedging relationships
	Interest rate contracts:
	Interest rate swaps included in other assets	$	2,469		$	-
	Forward contracts included in other liabilities		(1,911	)		738

	Derivatives not designated as hedging instruments
	Interest rate contracts:
	Futures contracts included in other assets	$	(2,662	)	$	(482	)
	Exchange traded purchased options included in other assets		83			42
	OTC written options (rate locks) included in other assets		126			2,284
	Interest rate swaps included in other assets		4,962			5,241
	Credit risk participation agreements included in other assets		16			22
	Exchange traded written options included in other liabilities		581			545
	Interest rate swaps included in other liabilities		4,628			5,329
Effects of derivative instruments on statements of operations	'

		Years ended December 31,
		2013			2012			2011
	Derivatives in hedging relationships
	Amount of gain (loss) recognized in mortgage banking, net	$	2,649		$	1,479		$	(5,360	)

	Derivatives not designated as hedging instruments
	Amount of (loss) gain recognized in mortgage banking, net	$	(10,459	)	$	7,585		$	19,929
	Amount of gain (loss) recognized in bankcard and other fees		290			(82	)		(79	)
Schedule of amount included in other comprehensive loss for derivative instruments designated as hedges of cash flows	'
	The following table discloses the amount included in other comprehensive (loss) income for derivative instruments designated as cash flow hedges for the years ended December 31, 2013 and 2012 ($ in thousands):

		Years Ended December 31,
		2013			2012
	Derivatives in cash flow hedging relationship
	Amount of gain recognized in other comprehensive (loss) income	$	1,524		$	-
Information about financial instruments that are eligible for offset in the consolidated balance sheets	'
	Certain financial instruments, including resell and repurchase agreements, securities lending arrangements and derivatives, may be eligible for offset in the consolidated balance sheet and/or subject to master netting arrangements or similar agreements. Information about financial instruments that are eligible for offset in the consolidated balance sheets as of December 31, 2013 and 2012 is presented in the following tables ($ in thousands):

	Offsetting of Derivative Assets
	As of December 31, 2013
											Gross Amounts Not Offset in the
											Statement of Financial Position
		Gross			Gross Amounts			Net Amounts of
		Amounts of			Offset in the			Assets presented			Financial			Cash Collateral
		Recognized			Statement of			in the Statement of			Instruments			Received			Net Amount
		Assets			Financial Position			Financial Position
	Derivatives	$	7,431		$	-		$	7,431		$	(967	)	$	(1,920	)	$	4,544

	Offsetting of Derivative Liabilities
	As of December 31, 2013
											Gross Amounts Not Offset in the
											Statement of Financial Position
		Gross			Gross Amounts			Net Amounts of
		Amounts of			Offset in the			Liabilities presented
		Recognized			Statement of			in the Statement of			Financial			Cash Collateral
		Liabilities			Financial Position			Financial Position			Instruments			Posted			Net Amount
	Derivatives	$	4,628		$	-		$	4,628		$	(967	)	$	-		$	3,661

	Offsetting of Derivative Assets
	As of December 31, 2012
											Gross Amounts Not Offset in the
											Statement of Financial Position
		Gross			Gross Amounts			Net Amounts of
		Amounts of			Offset in the			Assets presented
		Recognized			Statement of			in the Statement of			Financial			Cash Collateral
		Assets			Financial Position			Financial Position			Instruments			Received			Net Amount
	Derivatives	$	5,241		$	-		$	5,241		$	-		$	-		$	5,241

	Offsetting of Derivative Liabilities
	As of December 31, 2012
											Gross Amounts Not Offset in the
											Statement of Financial Position
		Gross			Gross Amounts			Net Amounts of
		Amounts of			Offset in the			Liabilities presented
		Recognized			Statement of			in the Statement of			Financial			Cash Collateral
		Liabilities			Financial Position			Financial Position			Instruments			Posted			Net Amount
	Derivatives	$	5,329		$	-		$	5,329		$	-		$	(594	)	$	4,735

Segment_Information_Tables

Segment Information (Tables)	12 Months Ended
Segment Information (Tables)	Dec. 31, 2013
Segment Information [Abstract]	'
Schedule of Segment Information	'
	The following table discloses financial information by reportable segment for the periods ended December 31, 2013, 2012 and 2011.

	Segment Information
	($ in thousands)
		Years Ended December 31,
		2013			2012		2011
	General Banking
	Net interest income	$	383,851		$	336,362	$	344,415
	Provision for loan losses, net		(7,419	)		12,188		30,185
	Noninterest income		113,436			122,421		109,601
	Noninterest expense		364,940			300,097		284,849
	Income before income taxes		139,766			146,498		138,982
	Income taxes		31,924			37,523		38,414
	General banking net income	$	107,842		$	108,975	$	100,568

	Selected Financial Information
	Average assets	$	11,393,972		$	9,658,924	$	9,436,557
	Depreciation and amortization	$	35,961		$	27,876	$	23,640

	Wealth Management
	Net interest income	$	4,317		$	4,327	$	4,256
	Provision for loan losses, net		37			106		143
	Noninterest income		29,581			24,565		23,300
	Noninterest expense		26,804			23,053		23,300
	Income before income taxes		7,057			5,733		4,113
	Income taxes		2,329			1,910		1,303
	Wealth Management net income	$	4,728		$	3,823	$	2,810

	Selected Financial Information
	Average assets	$	70,121		$	78,567	$	81,472
	Depreciation and amortization	$	167		$	174	$	209

	Insurance
	Net interest income	$	319		$	301	$	272
	Noninterest income		30,842			28,203		26,953
	Noninterest expense		23,987			21,352		21,701
	Income before income taxes		7,174			7,152		5,524
	Income taxes		2,684			2,667		2,061
	Insurance net income	$	4,490		$	4,485	$	3,463

	Selected Financial Information
	Average assets	$	66,876		$	65,560	$	65,414
	Depreciation and amortization	$	1,025		$	1,225	$	1,424

	Consolidated
	Net interest income	$	388,487		$	340,990	$	348,943
	Provision for loan losses, net		(7,382	)		12,294		30,328
	Noninterest income		173,859			175,189		159,854
	Noninterest expense		415,731			344,502		329,850
	Income before income taxes		153,997			159,383		148,619
	Income taxes		36,937			42,100		41,778
	Consolidated net income	$	117,060		$	117,283	$	106,841

	Selected Financial Information
	Average assets	$	11,530,969		$	9,803,051	$	9,583,443
	Depreciation and amortization	$	37,153		$	29,275	$	25,273

Parent_Company_Only_Financial_1

Parent Company Only Financial Information (Tables)	12 Months Ended
Parent Company Only Financial Information (Tables)	Dec. 31, 2013
Parent Company Only Financial Information [Abstract]	'
Parent Only Financial Statements	'

	Condensed Balance Sheets	December 31,
	Assets:	2013			2012
	Investment in banks	$	1,394,250		$	1,330,452
	Other assets		25,314			19,608
	Total Assets	$	1,419,564		$	1,350,060

	Liabilities and Shareholders' Equity:
	Accrued expense	$	2,755		$	835
	Junior subordinated debt securities		61,856			61,856
	Shareholders' equity		1,354,953			1,287,369
	Total Liabilities and Shareholders' Equity	$	1,419,564		$	1,350,060

	Condensed Statements of Income	Years Ended December 31,
	Revenue:	2013			2012			2011
	Dividends received from banks	$	64,155		$	72,216		$	61,138
	Earnings of subsidiaries over distributions		54,195			46,220			46,818
	Other income		64			59			54
	Total Revenue		118,414			118,495			108,010
	Expense:
	Other expense		1,354			1,212			1,169
	Total Expense		1,354			1,212			1,169
	Net Income	$	117,060		$	117,283		$	106,841


	Condensed Statements of Cash Flows	Years Ended December 31,
	Operating Activities:	2013			2012			2011
	Net income	$	117,060		$	117,283		$	106,841
	Adjustments to reconcile net income to net cash provided by operating activities:
	Increase in investment in subsidiaries		(54,195	)		(46,220	)		(46,818	)
	Other		962			(376	)		268
	Net cash provided by operating activities		63,827			70,687			60,291

	Investing Activities:
	Payment for investments in subsidiaries		(73,263	)		(10,003	)		-
	Repayment for investments in subsidiaries		106,000			-			-
	Net cash provided by (used in) investing activities		32,737			(10,003	)		-

	Financing Activities:
	Repayments of advances from subsidiaries		(33,000	)		-			-
	Cash dividends paid on common stock		(62,276	)		(59,961	)		(59,485	)
	Other common stock transactions, net		2,832			(1,237	)		(141	)
	Net cash used in financing activities		(92,444	)		(61,198	)		(59,626	)
	Increase (decrease) in cash and cash equivalents		4,120			(514	)		665
	Cash and cash equivalents at beginning of year		17,656			18,170			17,505
	Cash and cash equivalents at end of year	$	21,776		$	17,656		$	18,170

Significant_Accounting_Policie3

Significant Accounting Policies (Details) (USD $)	12 Months Ended
Share data in Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
	Factor
	Office
	Region
Business [Abstract]	'		'		'
Number of offices	208		'		'
Loans Held-for-sale [Abstract]	'		'		'
Percentage of remaining principal balance of the loan servicer may repurchase (in hundredths)	100.00%		'		'
Loans Held for Investment [Abstract]	'		'		'
Number of days loan is contractually past due to be classified as a past due loan	'30 days		'		'
Balance of commercial nonaccrual loans identified for impairment analysis, minimum	$500,000		'		'
Allowance for loan losses [Abstract]	'		'		'
Methodology elements in allowance for loan losses guidance	3		'		'
Key market regions	5		'		'
Amortization of FDIC indemnification asset	2,500,000		'		'
Goodwill and Identifiable Intangible Assets [Abstract]	'		'		'
Finite-lived intangible assets, average useful life	'20 years		'		'
Federal Home Loan Bank and Federal Reserve stock	'		'		'
Securities with limited marketability	28,400,000		25,600,000		'
Statement of cash flows specific transaction amounts [Abstract]	'		'		'
Income taxes paid	14,520,000		57,834,000		37,604,000
Interest expense paid on deposits and borrowings	25,715,000		31,496,000		44,060,000
Noncash transfers from loans to foreclosed properties	41,042,000	[1]	37,635,000	[1]	57,297,000	[1]
Assets acquired in business combination	1,845,543,000		234,960,000		207,243,000
Liabilities assumed in business combination	$1,821,066,000		$209,322,000		$228,236,000
Weighted-average shares used to calculate basic and diluted EPS [Abstract]	'		'		'
Basic shares (in shares)	66,897		64,659		64,066
Dilutive shares (in shares)	176		192		195
Diluted shares (in shares)	67,073		64,851		64,261
Weighted-average antidilutive stock awards (in shares)	333		653		1,226
Buildings [Member] \| Maximum [Member]	'		'		'
Premises and Equipment, Net [Abstract]	'		'		'
Estimated useful lives of the assets	'39 years		'		'
Furniture and Equipment [Member] \| Maximum [Member]	'		'		'
Premises and Equipment, Net [Abstract]	'		'		'
Estimated useful lives of the assets	'10 years		'		'
Furniture and Equipment [Member] \| Minimum [Member]	'		'		'
Premises and Equipment, Net [Abstract]	'		'		'
Estimated useful lives of the assets	'3 years		'		'
Commercial Credits [Member]	'		'		'
Loans Held for Investment [Abstract]	'		'		'
Number of days past due on credits for loan to be classified as nonaccrual	'90 days		'		'
Non-Business Purpose Credits [Member]	'		'		'
Loans Held for Investment [Abstract]	'		'		'
Number of days past due on credits for loan to be classified as nonaccrual	'120 days		'		'
Consumer Loans [Member]	'		'		'
Loans Held for Investment [Abstract]	'		'		'
Number of days past due loans are generally charged-off	'180 days		'		'
Non-real Estate Consumer Purpose Loans [Member]	'		'		'
Loans Held for Investment [Abstract]	'		'		'
Number of days past due loans are generally charged-off	'120 days		'		'
Credit Card Loans [Member]	'		'		'
Loans Held for Investment [Abstract]	'		'		'
Number of days past due loans are generally charged-off	'180 days		'		'

[1]	Includes transfers from covered loans to foreclosed properties.

Business_Combinations_Details

Business Combinations (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013	Jul. 26, 2013
In Thousands, unless otherwise specified				Somerville Bank & Trust Company [Member]	Oxford, Mississippi Branches [Member]
				Branch	Branch
Business Acquisition [Line Items]	'	'	'	'	'
Number of branches acquired	'	'	'	5	2
Total Assets	$1,845,543	$234,960	$207,243	$219,600	'
Business acquisition purchase price allocation deposits acquired	'	'	'	'	$11,700

Business_Combinations_BancTrus

Business Combinations, BancTrust Financial Group (Details) (USD $)	12 Months Ended			0 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Feb. 15, 2013	Dec. 31, 2013
				BancTrust Financial Group, Inc. [Member]	BancTrust Financial Group, Inc. [Member]
					Market
Business Acquisition [Line Items]	'	'	'	'	'
Age of acquired entity	'	'	'	'26 years	'
Preferred stock and warrants repurchased	'	'	'	$50,000,000	'
Issued value of preferred stock associated warrant under capital purchase program	'	'	'	52,600,000	'
Equity issued, per share of acquired company (in shares)	'	'	'	0.125	'
Decrease in acquired non covered loans as measurement period adjustment	'	'	'	'	6,800,000
Decrease in Premises and equipment as measurement period adjustment	'	'	'	'	627,000
Decrease in other real estate as measurement period adjustment	'	'	'	'	2,600,000
Increase in deferred tax asset as measurement period adjustment	'	'	'	'	3,400,000
Increase in goodwill as measurement period adjustment	'	'	'	'	6,300,000
Transfer to other real estate as measurement period adjustment	'	'	'	'	1,600,000
Assets [Abstract]	'	'	'	'	'
Cash and due from banks	'	'	'	141,616,000	'
Securities available for sale	'	'	'	528,016,000	'
Loans held for sale	'	'	'	1,050,000	'
Acquired noncovered loans	'	'	'	944,235,000	'
Premises and equipment, net	'	'	'	54,952,000	'
Identifiable intangible assets	'	'	'	33,498,000	'
Other real estate	'	'	'	40,103,000	'
Other assets	'	'	'	102,073,000	'
Total Assets	1,845,543,000	234,960,000	207,243,000	1,845,543,000	'
Liabilities [Abstract]	'	'	'	'	'
Business acquisition purchase price allocation deposits acquired	'	'	'	1,740,254,000	'
Other borrowings	'	'	'	64,051,000	'
Other liabilities	'	'	'	16,761,000	'
Total Liabilities	1,821,066,000	209,322,000	228,236,000	1,821,066,000	'
Net identified assets acquired at fair value	'	'	'	24,477,000	'
Goodwill	372,851,000	291,104,000	'	81,597,000	'
Net assets acquired at fair value	'	'	'	106,074,000	'
Equity issued (in shares)	'	'	'	2,240,000	'
Business acquisition, equity issued, value assigned	'	'	'	53,500,000	'
Business acquisition, closing stock price (in dollars per share)	'	'	'	$23.83	'
Number of markets entered due to acquisition	'	'	'	'	15
Amortization period of acquired intangible asset	'20 years	'	'	'	'10 years
Revenue from the operations of BancTrust included in Trustmark's operations results	'	'	'	'	71,900,000
Net income, excluding non-routine transaction expenses	'	'	'	'	16,600,000
Recoveries, net of tax	'	'	'	'	7,200,000
Business acquisition, total transaction expenses	'	'	'	'	9,400,000
Business acquisition, severance expense	'	'	'	'	1,400,000
Business acquisition, contract termination and other expenses	'	'	'	'	$7,900,000

Business_Combinations_Business

Business Combinations, Business Combinations, BancTrust Financial Group, Pro forma Financial Information (Details) (BancTrust Financial Group, Inc. [Member], USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
BancTrust Financial Group, Inc. [Member]	'	'
Unaudited pro forma financial information [Abstract]	'	'
Net Interest Income	$396,003	$410,443
Total Noninterest Income	175,722	188,064
Net income	$124,869	$136,120
Pro Forma Earnings Per Common Share [Abstract]	'	'
Basic (in dollars per share)	$1.81	$2.03
Diluted (in dollars per share)	$1.80	$2.03

Business_Combinations_Bay_Bank

Business Combinations, (Bay Bank and Trust Company) (Details) (USD $)	12 Months Ended			0 Months Ended	3 Months Ended
Share data in Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Mar. 16, 2012	Jun. 30, 2012	Mar. 31, 2012
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Bay Bank and Trust Company [Member]	Bay Bank and Trust Company [Member]	Bay Bank and Trust Company [Member]
Business Acquisition [Line Items]	'	'	'	'	'	'
Age of acquired entity	'	'	'	'76 years	'	'
Business acquisition, cost of acquired entity, cash paid	'	'	'	$10,000,000	'	'
Business acquisition, equity issued (in shares)	'	'	'	510	'	'
Business acquisition, equity issued, value assigned	'	'	'	12,000,000	'	'
Assets:	'	'	'	'	'	'
Cash and due from banks	'	'	'	88,154,000	'	'
Securities available for sale	'	'	'	26,369,000	'	'
Acquired noncovered loans	'	'	'	97,914,000	'	'
Premises and equipment, net	'	'	'	9,466,000	'	'
Identifiable intangible assets	'	'	'	7,017,000	'	'
Other real estate	'	'	'	2,569,000	'	'
Other assets	'	'	'	3,471,000	'	'
Total Assets	1,845,543,000	234,960,000	207,243,000	234,960,000	'	'
Liabilities:	'	'	'	'	'	'
Deposits	'	'	'	208,796,000	'	'
Other liabilities	'	'	'	526,000	'	'
Total Liabilities	1,821,066,000	209,322,000	228,236,000	209,322,000	'	'
Net assets acquired at fair value	'	'	'	25,638,000	'	'
Consideration paid to Bay Bank	'	'	'	22,003,000	'	'
Bargain purchase gain	0	3,635,000	7,456,000	3,635,000	881,000	2,800,000
Income taxes	'	'	'	0	'	'
Bargain purchase gain, net of taxes	'	'	'	3,635,000	'	'
Business acquisition, total transaction expenses	'	'	'	'	'	2,600,000
Business acquisition, severance expense	'	'	'	'	'	672,000
Business acquisition, contract termination and other expenses	'	'	'	'	'	$1,900,000
Amortization period of acquired intangible asset	'20 years	'	'	'	'	'10 years

Business_Combinations_Heritage

Business Combinations, (Heritage Banking Group) (Details) (USD $)	12 Months Ended			0 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Apr. 15, 2011	Dec. 31, 2011
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Heritage Banking Group Business Acquisition [Member]	Heritage Banking Group Business Acquisition [Member]
Business Acquisition [Line Items]	'	'	'	'	'
Age of acquired entity	'	'	'	'	'90 years
FDIC loss-share transaction asset coverage agreement	'	'	$151,900,000	'	'
FDIC loss-share agreement covered loan and other real estate losses (in hundredths)	'	'	80.00%	'	'
FDIC loss-share agreement term for single family residential mortgage loans and foreclosed real estate	'	'	'P10Y	'	'
FDIC loss-share agreement term for commercial loans and related foreclosures	'	'	'P5Y	'	'
FDIC loss-share agreement reimbursement term for recoveries of covered losses	'	'	'P3Y	'	'
Assets [Abstract]	'	'	'	'	'
Cash and due from banks	'	'	'	50,447,000	'
Federal funds sold	'	'	'	1,000,000	'
Securities available for sale	'	'	'	6,389,000	'
Acquired noncovered loans	'	'	'	9,644,000	'
Acquired covered loans	'	'	'	97,770,000	'
Premises and equipment, net	'	'	'	55,000	'
Identifiable intangible assets	'	'	'	902,000	'
Covered other real estate	'	'	'	7,485,000	'
FDIC indemnification asset	'	'	'	33,333,000	'
Other assets	'	'	'	218,000	'
Total Assets	1,845,543,000	234,960,000	207,243,000	207,243,000	'
Liabilities [Abstract]	'	'	'	'	'
Deposits	'	'	'	204,349,000	'
Short-term borrowings	'	'	'	23,157,000	'
Other liabilities	'	'	'	730,000	'
Total Liabilities	1,821,066,000	209,322,000	228,236,000	228,236,000	'
Net assets acquired at fair value	'	'	'	-20,993,000	'
Cash received on acquisition	'	'	'	28,449,000	'
Bargain purchase gain	0	3,635,000	7,456,000	7,456,000	'
Income taxes	'	'	'	2,852,000	'
Bargain purchase gain, net of taxes	'	'	'	$4,604,000	'

Cash_and_Due_from_Banks_Detail

Cash and Due from Banks (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Cash and Due from Banks [Abstract]	'	'
Average reserve balances with Federal Reserve Bank	$57.60	$47.70

Securities_Available_for_Sale_2

Securities Available for Sale and Held to Maturity (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Available for sale securities [Abstract]	'	'
Amortized cost	$2,189,005	$2,584,976
Gross unrealized gains	31,979	72,980
Gross unrealized (losses)	-26,830	-211
Estimated fair value	2,194,154	2,657,745
Held to maturity securities [Abstract]	'	'
Amortized cost	1,168,728	42,188
Gross unrealized gains	3,063	4,700
Gross unrealized (losses)	-20,958	0
Estimated fair value	1,150,833	46,888
US Treasury Securities [Member]	'	'
Held to maturity securities [Abstract]	'	'
Amortized cost	0	'
Gross unrealized gains	0	'
Gross unrealized (losses)	0	'
Estimated fair value	0	'
U.S. Government Agency Obligations Issued by U.S. Government Agencies [Member]	'	'
Held to maturity securities [Abstract]	'	'
Amortized cost	0	0
Gross unrealized gains	0	0
Gross unrealized (losses)	0	0
Estimated fair value	0	0
U.S. Government Agency Obligations Issued by U.S. Government Sponsored Agencies [Member]	'	'
Held to maturity securities [Abstract]	'	'
Amortized cost	100,159	0
Gross unrealized gains	0	0
Gross unrealized (losses)	-1,580	0
Estimated fair value	98,579	0
Obligations of States and Political Subdivisions [Member]	'	'
Held to maturity securities [Abstract]	'	'
Amortized cost	65,987	36,206
Gross unrealized gains	2,806	4,184
Gross unrealized (losses)	-281	0
Estimated fair value	68,512	40,390
Residential Mortgage Pass-Through Securities Guaranteed by GNMA [Member]	'	'
Held to maturity securities [Abstract]	'	'
Amortized cost	9,433	3,245
Gross unrealized gains	142	227
Gross unrealized (losses)	-72	0
Estimated fair value	9,503	3,472
Residential Mortgage Pass-Through Securities Issued by FNMA and FHLMC [Member]	'	'
Held to maturity securities [Abstract]	'	'
Amortized cost	12,724	572
Gross unrealized gains	30	52
Gross unrealized (losses)	-162	0
Estimated fair value	12,592	624
Other Residential Mortgage-Backed Securities Issued or Guaranteed by FNMA, FHLMC or GNMA [Member]	'	'
Held to maturity securities [Abstract]	'	'
Amortized cost	837,393	0
Gross unrealized gains	0	0
Gross unrealized (losses)	-15,072	0
Estimated fair value	822,321	0
Commercial Mortgage-Backed Securities Issued or Guaranteed by FNMA, FHLMC or GNMA [Member]	'	'
Held to maturity securities [Abstract]	'	'
Amortized cost	143,032	2,165
Gross unrealized gains	85	237
Gross unrealized (losses)	-3,791	0
Estimated fair value	139,326	2,402
Asset-Backed Securities and Structured Financial Products [Member]	'	'
Held to maturity securities [Abstract]	'	'
Amortized cost	0	0
Gross unrealized gains	0	0
Gross unrealized (losses)	0	0
Estimated fair value	0	0
US Treasury Securities [Member]	'	'
Available for sale securities [Abstract]	'	'
Amortized cost	501	'
Gross unrealized gains	1	'
Gross unrealized (losses)	0	'
Estimated fair value	502	'
U.S. Government Agency Obligations Issued by U.S. Government Agencies [Member]	'	'
Available for sale securities [Abstract]	'	'
Amortized cost	129,653	10
Gross unrealized gains	1,125	0
Gross unrealized (losses)	-1,485	0
Estimated fair value	129,293	10
U.S. Government Agency Obligations Issued by U.S. Government Sponsored Agencies [Member]	'	'
Available for sale securities [Abstract]	'	'
Amortized cost	40,681	105,396
Gross unrealized gains	19	339
Gross unrealized (losses)	-521	0
Estimated fair value	40,179	105,735
Obligations of States and Political Subdivisions [Member]	'	'
Available for sale securities [Abstract]	'	'
Amortized cost	165,810	202,877
Gross unrealized gains	6,243	12,900
Gross unrealized (losses)	-315	-16
Estimated fair value	171,738	215,761
Residential Mortgage Pass-Through Securities Guaranteed by GNMA [Member]	'	'
Available for sale securities [Abstract]	'	'
Amortized cost	14,099	18,981
Gross unrealized gains	459	921
Gross unrealized (losses)	-84	0
Estimated fair value	14,474	19,902
Residential Mortgage Pass-Through Securities Issued by FNMA and FHLMC [Member]	'	'
Available for sale securities [Abstract]	'	'
Amortized cost	239,880	201,493
Gross unrealized gains	3,147	7,071
Gross unrealized (losses)	-1,909	0
Estimated fair value	241,118	208,564
Other Residential Mortgage-Backed Securities Issued or Guaranteed by FNMA, FHLMC or GNMA [Member]	'	'
Available for sale securities [Abstract]	'	'
Amortized cost	1,300,375	1,436,812
Gross unrealized gains	12,459	29,574
Gross unrealized (losses)	-22,093	-20
Estimated fair value	1,290,741	1,466,366
Commercial Mortgage-Backed Securities Issued or Guaranteed by FNMA, FHLMC or GNMA [Member]	'	'
Available for sale securities [Abstract]	'	'
Amortized cost	235,317	380,514
Gross unrealized gains	7,278	19,420
Gross unrealized (losses)	-423	-154
Estimated fair value	242,172	399,780
Asset-Backed Securities and Structured Financial Products [Member]	'	'
Available for sale securities [Abstract]	'	'
Amortized cost	62,689	238,893
Gross unrealized gains	1,248	2,755
Gross unrealized (losses)	0	-21
Estimated fair value	$63,937	$241,627

Securities_Available_for_Sale_3

Securities Available for Sale and Held to Maturity (1) (Details) (USD $)

3 Months Ended

12 Months Ended

3 Months Ended

0 Months Ended

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Jan. 31, 2014

Available-for-sale Securities [Member]

Held-to-maturity Securities [Member]

U.S. Government Agency Obligations Issued by U.S. Government Agencies [Member]

U.S. Government Agency Obligations Issued by U.S. Government Sponsored Agencies [Member]

Obligations of States and Political Subdivisions [Member]

Residential Mortgage Pass-Through Securities Guaranteed by GNMA [Member]

Residential Mortgage Pass-Through Securities Issued by FNMA and FHLMC [Member]

Other Residential Mortgage-Backed Securities Issued or Guaranteed by FNMA, FHLMC or GNMA [Member]

Commercial Mortgage-Backed Securities Issued or Guaranteed by FNMA, FHLMC or GNMA [Member]

Asset-Backed Securities and Structured Financial Products [Member]

Collateralized Loan Obligations [Member]

Subsequent Event [Member]

Fair value [Abstract]

Estimated fair value, less than 12 months

$2,108,340,000

$25,345,000

$68,908,000

$138,478,000

$55,963,000

$5,878,000

$14,732,000

$118,466,000

$1,534,381,000

$3,055,000

$177,412,000

$16,412,000

Estimated fair value, 12 months or more

24,415,000

16,339,000

796,000

161,000

23,458,000

16,339,000

Total estimated fair value

2,132,755,000

41,684,000

68,908,000

138,478,000

56,759,000

5,878,000

14,893,000

118,466,000

1,557,839,000

3,055,000

177,412,000

16,339,000

16,412,000

Gross unrealized losses [Abstract]

Gross unrealized (losses), less than 12 months

-47,362,000

-57,000

-1,485,000

-2,101,000

-586,000

-16,000

-155,000

-2,071,000

-36,750,000

-20,000

-4,214,000

-21,000

Gross unrealized (losses), 12 months or more

-426,000

-154,000

-10,000

-1,000

-415,000

-154,000

Total gross unrealized (losses)

-47,788,000

-211,000

-1,485,000

-2,101,000

-596,000

-16,000

-156,000

-2,071,000

-37,165,000

-20,000

-4,214,000

-154,000

-21,000

Net gain on sale of collateralized loan obligations

1,300,000

389,000

Sale of collateralized loan obligations

135,600,000

Collateralized loan obligations still held at 12/31/2014

25,800,000

Gains (losses) on investments [Abstract]

Proceeds from calls and sales of securities

224,853,000

38,364,000

24,471,000

335,000

3,645,000

Gross realized gains

1,680,000

1,052,000

57,000

9,000

34,000

Gross realized (losses)

485,000

1,059,000

80,000

-1,195,000

-2,000

-11,000

Pledged to collateralize public deposits and securities sold under repurchase agreements and for other purposes as permitted by law

2,475,000,000

1,813,000,000

Pledged securities providing additional contingency funding

15,800,000

Available for Sale, amortized cost [Abstract]

Due in one year or less

8,958,000

Due after one year through five years

152,654,000

Due after five years through ten years

104,057,000

Due after ten years

133,665,000

Total amortized cost, before mortgage-backed-securities

399,334,000

Mortgage-backed securities

1,789,671,000

Securities available for sale (at amortized cost)

2,189,005,000

Available for Sale, estimated fair value [Abstract]

Due in one year or less

9,020,000

Due after one year through five years

156,970,000

Due after five years through ten years

106,288,000

Due after ten years

133,371,000

Total fair value, before mortgage-backed-securities

405,649,000

Mortgage-backed securities

1,788,505,000

Securities available for sale (at fair value)

2,194,154,000

2,657,745,000

Held to maturity, amortized cost [Abstract]

Due in one year or less

1,936,000

Due after one year through five years

12,949,000

Due after five years through ten years

134,997,000

Due after ten years

16,264,000

Total amortized cost, before mortgage-backed-securities

166,146,000

Mortgage-backed securities

1,002,582,000

Securities held to maturity (at amortized cost)

1,168,728,000

42,188,000

100,159,000

65,987,000

36,206,000

9,433,000

3,245,000

12,724,000

572,000

837,393,000

143,032,000

2,165,000

Held to maturity, estimated fair value [Abstract]

Due in one year or less

1,968,000

Due after one year through five years

13,943,000

Due after five years through ten years

135,186,000

Due after ten years

15,994,000

Total fair value, before mortgage-backed-securities

167,091,000

Mortgage-backed securities

983,742,000

Securities held to maturity (at fair value)

1,150,833,000

46,888,000

98,579,000

68,512,000

40,390,000

9,503,000

3,472,000

12,592,000

624,000

822,321,000

139,326,000

2,402,000

Reclassification of Securities available for sale to securities held to maturity

1,099,000,000

Net unrealized holding loss on AFS Securities at date of transfer

46,600,000

Net unrealized holding loss on AFS Securities, net of tax at date of transfer

28,800,000

Net unamortized, unrealized loss on transfer of securities

46,400,000

Net unamortized, unrealized loss on transfer of securities, net of tax

$28,600,000

Loans_Held_for_Investment_LHFI2

Loans Held for Investment (LHFI) and Allowance for Loan Losses, LHFI (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Loan Portfolio [Abstract]	'	'	'	'
Total LHFI	$5,798,881	$5,592,754	'	'
Less Allowance For Loan Losses, LHFI	66,448	78,738	89,518	93,510
Net LHFI	5,732,433	5,514,016	'	'
Loans and Leases Receivable, Other Information [Abstract]	'	'	'	'
LHFI, Individually Evaluated For Impairment	65,238	82,363	'	'
LHFI, Collectively Evaluated For Impairment	5,733,643	5,510,391	'	'
Total LHFI	5,798,881	5,592,754	'	'
Loans Secured by Real Estate [Member] \| Construction Land Development and Other Land Loans [Member]	'	'	'	'
Loan Portfolio [Abstract]	'	'	'	'
Total LHFI	596,889	468,975	'	'
Loans and Leases Receivable, Other Information [Abstract]	'	'	'	'
LHFI, Individually Evaluated For Impairment	13,327	27,105	'	'
LHFI, Collectively Evaluated For Impairment	583,562	441,870	'	'
Total LHFI	596,889	468,975	'	'
Loans Secured by Real Estate [Member] \| Secured by 1-4 Family Residential Properties [Member]	'	'	'	'
Loan Portfolio [Abstract]	'	'	'	'
Total LHFI	1,485,564	1,497,480	'	'
Loans and Leases Receivable, Other Information [Abstract]	'	'	'	'
LHFI, Individually Evaluated For Impairment	21,603	27,114	'	'
LHFI, Collectively Evaluated For Impairment	1,463,961	1,470,366	'	'
Total LHFI	1,485,564	1,497,480	'	'
Loans Secured by Real Estate [Member] \| Secured by Nonfarm, Nonresidential Properties [Member]	'	'	'	'
Loan Portfolio [Abstract]	'	'	'	'
Total LHFI	1,415,139	1,410,264	'	'
Loans and Leases Receivable, Other Information [Abstract]	'	'	'	'
LHFI, Individually Evaluated For Impairment	21,809	18,289	'	'
LHFI, Collectively Evaluated For Impairment	1,393,330	1,391,975	'	'
Total LHFI	1,415,139	1,410,264	'	'
Loans Secured by Real Estate [Member] \| Other Real Estate Properties [Member]	'	'	'	'
Loan Portfolio [Abstract]	'	'	'	'
Total LHFI	189,362	189,949	'	'
Loans and Leases Receivable, Other Information [Abstract]	'	'	'	'
LHFI, Individually Evaluated For Impairment	1,327	3,956	'	'
LHFI, Collectively Evaluated For Impairment	188,035	185,993	'	'
Total LHFI	189,362	189,949	'	'
Commercial and Industrial Loans [Member]	'	'	'	'
Loan Portfolio [Abstract]	'	'	'	'
Total LHFI	1,157,614	1,169,513	'	'
Loans and Leases Receivable, Other Information [Abstract]	'	'	'	'
LHFI, Individually Evaluated For Impairment	6,286	4,741	'	'
LHFI, Collectively Evaluated For Impairment	1,151,328	1,164,772	'	'
Total LHFI	1,157,614	1,169,513	'	'
Consumer Loans [Member]	'	'	'	'
Loan Portfolio [Abstract]	'	'	'	'
Total LHFI	165,308	171,660	'	'
Loans and Leases Receivable, Other Information [Abstract]	'	'	'	'
LHFI, Individually Evaluated For Impairment	151	360	'	'
LHFI, Collectively Evaluated For Impairment	165,157	171,300	'	'
Total LHFI	165,308	171,660	'	'
Other Loans [Member]	'	'	'	'
Loan Portfolio [Abstract]	'	'	'	'
Total LHFI	789,005	684,913	'	'
Loans and Leases Receivable, Other Information [Abstract]	'	'	'	'
LHFI, Individually Evaluated For Impairment	735	798	'	'
LHFI, Collectively Evaluated For Impairment	788,270	684,115	'	'
Total LHFI	$789,005	$684,913	'	'

Loans_Held_for_Investment_LHFI3

Loans Held for Investment (LHFI) and Allowance for Loan Losses, LHFI (1) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
	Region	Dec. 31, 2012	Dec. 31, 2011
Loan and Lease Receivables, Impaired [Abstract]	'	'	'
Unpaid Principal Balance	$86,982,000	$119,818,000	'
Total LHFI With No Related Allowance Recorded	25,643,000	23,190,000	'
Total LHFI With an Allowance Recorded	39,595,000	59,173,000	'
Total Carrying Amount	65,238,000	82,363,000	'
Related Allowance	5,181,000	10,504,000	'
Average Recorded Investment	73,800,000	96,410,000	'
Maximum Concentration Of Loan as a Percentage of Total LHFI (in hundredths)	10.00%	'	'
Key market regions	5	'	'
Loans and Leases Receivable, Related Parties	89,000,000	91,700,000	'
New loan advances to related party	629,800,000	'	'
Loan repayment by related party	626,300,000	'	'
Loan decreases from changes in executive officers and directors	6,200,000	'	'
Carrying amounts of nonaccrual LHFI considered for impairment analysis	65,200,000	82,400,000	'
Minimum loan amount for loan to be individually assessed for impairment	500,000	'	'
Nonaccrual Financing Receivable, Specifically Evaluated For Impairment	31,600,000	40,600,000	'
Nonaccrual Financing Receivable, Allowance for Credit Losses, Specifically Evaluated For Impairment	2,200,000	5,900,000	'
Nonaccrual Financing Receivable, Allowance For Credit Losses, Charge-offs, Specifically Evaluated For Impairment	2,500,000	13,100,000	21,500,000
Nonaccrual Financing Receivable Specifically Evaluated For Impairment Allowance For Credit Losses Provisions	2,900,000	1,100,000	7,500,000
Nonaccrual Financing Receivable, Not Specifically Evaluated for Impairment	33,700,000	41,800,000	'
Nonaccrual Financing Receivable, Allowance for Credit Losses, Not Specifically Evaluated for Impairment	3,000,000	4,600,000	'
Classified as Troubled Debt Restructuring LHFI	14,800,000	24,300,000	34,200,000
TDRs comprised of credits with interest only payments	11,100,000	21,600,000	34,200,000
Financing Receivable, Related Allowance	1,600,000	4,300,000	4,500,000
Financing Receivable, Related Charge-offs	816,000	6,000,000	1,900,000
Loans Secured by Real Estate [Member] \| Construction Land Development And Other Financing Receivable [Member]	'	'	'
Loan and Lease Receivables, Impaired [Abstract]	'	'	'
Unpaid Principal Balance	24,350,000	46,558,000	'
Total LHFI With No Related Allowance Recorded	9,817,000	9,571,000	'
Total LHFI With an Allowance Recorded	3,510,000	17,534,000	'
Total Carrying Amount	13,327,000	27,105,000	'
Related Allowance	989,000	4,992,000	'
Average Recorded Investment	20,216,000	33,759,000	'
Loans Secured by Real Estate [Member] \| Secured by 1-4 Family Residential Properties [Member]	'	'	'
Loan and Lease Receivables, Impaired [Abstract]	'	'	'
Unpaid Principal Balance	26,541,000	35,155,000	'
Total LHFI With No Related Allowance Recorded	3,095,000	2,533,000	'
Total LHFI With an Allowance Recorded	18,508,000	24,581,000	'
Total Carrying Amount	21,603,000	27,114,000	'
Related Allowance	191,000	1,469,000	'
Average Recorded Investment	24,359,000	25,731,000	'
Loans Secured by Real Estate [Member] \| Secured by Nonfarm, Nonresidential Properties [Member]	'	'	'
Loan and Lease Receivables, Impaired [Abstract]	'	'	'
Unpaid Principal Balance	24,879,000	23,337,000	'
Total LHFI With No Related Allowance Recorded	10,225,000	8,184,000	'
Total LHFI With an Allowance Recorded	11,584,000	10,105,000	'
Total Carrying Amount	21,809,000	18,289,000	'
Related Allowance	2,307,000	2,296,000	'
Average Recorded Investment	20,049,000	21,135,000	'
Loans Secured by Real Estate [Member] \| Other Real Estate Secured Financing Receivable [Member]	'	'	'
Loan and Lease Receivables, Impaired [Abstract]	'	'	'
Unpaid Principal Balance	1,375,000	6,036,000	'
Total LHFI With No Related Allowance Recorded	0	566,000	'
Total LHFI With an Allowance Recorded	1,327,000	3,390,000	'
Total Carrying Amount	1,327,000	3,956,000	'
Related Allowance	122,000	760,000	'
Average Recorded Investment	2,641,000	4,914,000	'
Commercial and Industrial Loans [Member]	'	'	'
Loan and Lease Receivables, Impaired [Abstract]	'	'	'
Unpaid Principal Balance	8,702,000	7,251,000	'
Total LHFI With No Related Allowance Recorded	2,506,000	2,336,000	'
Total LHFI With an Allowance Recorded	3,780,000	2,405,000	'
Total Carrying Amount	6,286,000	4,741,000	'
Related Allowance	1,253,000	640,000	'
Average Recorded Investment	5,513,000	9,444,000	'
Consumer Loans [Member]	'	'	'
Loan and Lease Receivables, Impaired [Abstract]	'	'	'
Unpaid Principal Balance	286,000	624,000	'
Total LHFI With No Related Allowance Recorded	0	0	'
Total LHFI With an Allowance Recorded	151,000	360,000	'
Total Carrying Amount	151,000	360,000	'
Related Allowance	2,000	5,000	'
Average Recorded Investment	255,000	592,000	'
Other Loans [Member]	'	'	'
Loan and Lease Receivables, Impaired [Abstract]	'	'	'
Unpaid Principal Balance	849,000	857,000	'
Total LHFI With No Related Allowance Recorded	0	0	'
Total LHFI With an Allowance Recorded	735,000	798,000	'
Total Carrying Amount	735,000	798,000	'
Related Allowance	317,000	342,000	'
Average Recorded Investment	$767,000	$835,000	'

Loans_Held_for_Investment_LHFI4

Loans Held for Investment (LHFI) and Allowance for Loan Losses, LHFI (2) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
	Contract	Contract	Contract
Troubled Debt Restructurings [Member]	'	'	'
Troubled Debt Restructurings [Abstract]	'	'	'
Number of Contracts	14	64	45
Pre-Modification Outstanding Recorded Investment	$4,884	$11,048	$32,040
Post-Modification Outstanding Recorded Investment	4,820	10,884	29,280
Troubled Debt Restructurings [Member] \| Construction Land Development And Other Financing Receivable [Member]	'	'	'
Troubled Debt Restructurings [Abstract]	'	'	'
Number of Contracts	'	12	26
Pre-Modification Outstanding Recorded Investment	'	4,092	16,200
Post-Modification Outstanding Recorded Investment	'	4,092	13,984
Troubled Debt Restructurings [Member] \| Secured by 1-4 Family Residential Properties [Member]	'	'	'
Troubled Debt Restructurings [Abstract]	'	'	'
Number of Contracts	10	48	17
Pre-Modification Outstanding Recorded Investment	498	5,399	3,843
Post-Modification Outstanding Recorded Investment	441	5,383	3,793
Troubled Debt Restructurings [Member] \| Secured by Nonfarm, Nonresidential Properties [Member]	'	'	'
Troubled Debt Restructurings [Abstract]	'	'	'
Number of Contracts	1	2	'
Pre-Modification Outstanding Recorded Investment	952	1,210	'
Post-Modification Outstanding Recorded Investment	952	1,210	'
Troubled Debt Restructurings [Member] \| Other Loans Secured by Real Estate [Member]	'	'	'
Troubled Debt Restructurings [Abstract]	'	'	'
Number of Contracts	'	1	'
Pre-Modification Outstanding Recorded Investment	'	199	'
Post-Modification Outstanding Recorded Investment	'	199	'
Troubled Debt Restructurings [Member] \| Commercial and Industrial [Member]	'	'	'
Troubled Debt Restructurings [Abstract]	'	'	'
Number of Contracts	2	1	2
Pre-Modification Outstanding Recorded Investment	944	148	11,997
Post-Modification Outstanding Recorded Investment	937	0	11,503
Troubled Debt Restructurings [Member] \| Other Loans [Member]	'	'	'
Troubled Debt Restructurings [Abstract]	'	'	'
Number of Contracts	1	'	'
Pre-Modification Outstanding Recorded Investment	2,490	'	'
Post-Modification Outstanding Recorded Investment	2,490	'	'
Troubled Debt Restructurings that Subsequently Defaulted [Member]	'	'	'
Troubled Debt Restructurings that Subsequently Defaulted [Abstract]	'	'	'
Number of Contracts	5	24	6
Recorded Investment	345	4,212	3,237
Troubled Debt Restructurings that Subsequently Defaulted [Member] \| Construction Land Development And Other Financing Receivable [Member]	'	'	'
Troubled Debt Restructurings that Subsequently Defaulted [Abstract]	'	'	'
Number of Contracts	0	7	5
Recorded Investment	0	1,881	3,058
Troubled Debt Restructurings that Subsequently Defaulted [Member] \| Secured by 1-4 Family Residential Properties [Member]	'	'	'
Troubled Debt Restructurings that Subsequently Defaulted [Abstract]	'	'	'
Number of Contracts	5	16	1
Recorded Investment	345	1,469	179
Troubled Debt Restructurings that Subsequently Defaulted [Member] \| Secured by Nonfarm, Nonresidential Properties [Member]	'	'	'
Troubled Debt Restructurings that Subsequently Defaulted [Abstract]	'	'	'
Number of Contracts	0	1	0
Recorded Investment	$0	$862	$0

Loans_Held_for_Investment_LHFI5

Loans Held for Investment (LHFI) and Allowance for Loan Losses, LHFI (3) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Financing Receivable, Modifications [Line Items]	'	'
Nonaccrual	$65,238	$82,363
Troubled Debt Restructurings [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Accruing	1,320	1,513
Nonaccrual	13,456	22,760
Total	14,776	24,273
Troubled Debt Restructurings [Member] \| Construction Land Development and Other Land Loans [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Accruing	0	233
Nonaccrual	6,247	12,073
Total	6,247	12,306
Troubled Debt Restructurings [Member] \| Secured by 1-4 Family Residential Properties [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Accruing	1,320	1,280
Nonaccrual	4,201	5,908
Total	5,521	7,188
Troubled Debt Restructurings [Member] \| Secured by Nonfarm, Nonresidential Properties [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Accruing	0	0
Nonaccrual	2,292	4,582
Total	2,292	4,582
Troubled Debt Restructurings [Member] \| Other Loans Secured by Real Estate [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Accruing	0	0
Nonaccrual	167	197
Total	167	197
Troubled Debt Restructurings [Member] \| Commercial And Industrial Loans [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Accruing	0	'
Nonaccrual	549	'
Total	$549	'

Loans_Held_for_Investment_LHFI6

Loans Held for Investment (LHFI) and Allowance for Loan Losses, LHFI (4) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
	CreditRiskGrade
	KeyRatios
	Loan
Financing Receivable Aging [Abstract]	'	'
Current	$5,714,900,000	$5,468,820,000
Past Due 30 - 89 Days	15,445,000	35,193,000
Nonaccrual	65,238,000	82,363,000
Total LHFI	5,798,881,000	5,592,754,000
Credit amount used as baseline in evaluating residential real estate development and non-owner occupied commercial real estate for loan policy	1,000,000	'
Number of days used as baseline in evaluating collateral documentation exceptions for loan policy (in days)	'90 days	'
Loan amount used as baseline in credit quality review for loan policy	100,000	'
Charge-off amount used as baseline in credit quality review for loan policy	25,000	'
Number of key quality ratios	6	'
Number of individual credit risk grades	10	'
Number of primary commercial loan groups	9	'
Minimum [Member]	'	'
Financing Receivable Aging [Abstract]	'	'
Period to conduct asset review	'6 months	'
Maximum [Member]	'	'
Financing Receivable Aging [Abstract]	'	'
Period to conduct asset review	'18 months	'
Loans Secured by Real Estate [Member] \| Construction Land Development and Other Land Loans [Member]	'	'
Financing Receivable Aging [Abstract]	'	'
Current	582,639,000	436,475,000
Past Due 30 - 89 Days	923,000	4,957,000
Nonaccrual	13,327,000	27,105,000
Total LHFI	596,889,000	468,975,000
Loans Secured by Real Estate [Member] \| Secured by 1-4 Family Residential Properties [Member]	'	'
Financing Receivable Aging [Abstract]	'	'
Current	1,451,528,000	1,454,609,000
Past Due 30 - 89 Days	9,437,000	12,626,000
Nonaccrual	21,603,000	27,114,000
Total LHFI	1,485,564,000	1,497,480,000
Loans Secured by Real Estate [Member] \| Secured by Nonfarm, Nonresidential Properties [Member]	'	'
Financing Receivable Aging [Abstract]	'	'
Current	1,391,286,000	1,382,515,000
Past Due 30 - 89 Days	2,044,000	9,460,000
Nonaccrual	21,809,000	18,289,000
Total LHFI	1,415,139,000	1,410,264,000
Loans Secured by Real Estate [Member] \| Other Real Estate Secured Financing Receivable [Member]	'	'
Financing Receivable Aging [Abstract]	'	'
Current	188,030,000	185,821,000
Past Due 30 - 89 Days	5,000	172,000
Nonaccrual	1,327,000	3,956,000
Total LHFI	189,362,000	189,949,000
Consumer Loans [Member]	'	'
Financing Receivable Aging [Abstract]	'	'
Current	162,843,000	167,536,000
Past Due 30 - 89 Days	2,012,000	3,480,000
Nonaccrual	151,000	360,000
Total LHFI	165,308,000	171,660,000
Other Loans [Member]	'	'
Financing Receivable Aging [Abstract]	'	'
Current	788,253,000	683,934,000
Past Due 30 - 89 Days	17,000	181,000
Nonaccrual	735,000	798,000
Total LHFI	789,005,000	684,913,000
Commercial Portfolio Segment [Member]	'	'
Financing Receivable [Abstract]	'	'
Financing receivable commercial	4,213,735,000	3,990,846,000
Commercial Portfolio Segment [Member] \| Pass [Member]	'	'
Financing Receivable [Abstract]	'	'
Financing receivable commercial	3,982,761,000	3,691,500,000
Commercial Portfolio Segment [Member] \| Special Mention [Member]	'	'
Financing Receivable [Abstract]	'	'
Financing receivable commercial	36,313,000	74,475,000
Commercial Portfolio Segment [Member] \| Substandard [Member]	'	'
Financing Receivable [Abstract]	'	'
Financing receivable commercial	190,743,000	222,178,000
Commercial Portfolio Segment [Member] \| Doubtful [Member]	'	'
Financing Receivable [Abstract]	'	'
Financing receivable commercial	3,918,000	2,693,000
Commercial Portfolio Segment [Member] \| Loans Secured by Real Estate [Member] \| Construction Land Development and Other Land Loans [Member]	'	'
Financing Receivable [Abstract]	'	'
Financing receivable commercial	545,691,000	422,966,000
Commercial Portfolio Segment [Member] \| Loans Secured by Real Estate [Member] \| Construction Land Development and Other Land Loans [Member] \| Pass [Member]	'	'
Financing Receivable [Abstract]	'	'
Financing receivable commercial	493,380,000	335,179,000
Commercial Portfolio Segment [Member] \| Loans Secured by Real Estate [Member] \| Construction Land Development and Other Land Loans [Member] \| Special Mention [Member]	'	'
Financing Receivable [Abstract]	'	'
Financing receivable commercial	4,383,000	23,812,000
Commercial Portfolio Segment [Member] \| Loans Secured by Real Estate [Member] \| Construction Land Development and Other Land Loans [Member] \| Substandard [Member]	'	'
Financing Receivable [Abstract]	'	'
Financing receivable commercial	47,610,000	63,832,000
Commercial Portfolio Segment [Member] \| Loans Secured by Real Estate [Member] \| Construction Land Development and Other Land Loans [Member] \| Doubtful [Member]	'	'
Financing Receivable [Abstract]	'	'
Financing receivable commercial	318,000	143,000
Commercial Portfolio Segment [Member] \| Loans Secured by Real Estate [Member] \| Secured by 1-4 Family Residential Properties [Member]	'	'
Financing Receivable [Abstract]	'	'
Financing receivable commercial	128,068,000	125,080,000
Commercial Portfolio Segment [Member] \| Loans Secured by Real Estate [Member] \| Secured by 1-4 Family Residential Properties [Member] \| Pass [Member]	'	'
Financing Receivable [Abstract]	'	'
Financing receivable commercial	119,640,000	110,333,000
Commercial Portfolio Segment [Member] \| Loans Secured by Real Estate [Member] \| Secured by 1-4 Family Residential Properties [Member] \| Special Mention [Member]	'	'
Financing Receivable [Abstract]	'	'
Financing receivable commercial	479,000	1,012,000
Commercial Portfolio Segment [Member] \| Loans Secured by Real Estate [Member] \| Secured by 1-4 Family Residential Properties [Member] \| Substandard [Member]	'	'
Financing Receivable [Abstract]	'	'
Financing receivable commercial	7,839,000	13,303,000
Commercial Portfolio Segment [Member] \| Loans Secured by Real Estate [Member] \| Secured by 1-4 Family Residential Properties [Member] \| Doubtful [Member]	'	'
Financing Receivable [Abstract]	'	'
Financing receivable commercial	110,000	432,000
Commercial Portfolio Segment [Member] \| Loans Secured by Real Estate [Member] \| Secured by Nonfarm, Nonresidential Properties [Member]	'	'
Financing Receivable [Abstract]	'	'
Financing receivable commercial	1,413,692,000	1,409,058,000
Commercial Portfolio Segment [Member] \| Loans Secured by Real Estate [Member] \| Secured by Nonfarm, Nonresidential Properties [Member] \| Pass [Member]	'	'
Financing Receivable [Abstract]	'	'
Financing receivable commercial	1,313,470,000	1,298,820,000
Commercial Portfolio Segment [Member] \| Loans Secured by Real Estate [Member] \| Secured by Nonfarm, Nonresidential Properties [Member] \| Special Mention [Member]	'	'
Financing Receivable [Abstract]	'	'
Financing receivable commercial	12,620,000	12,156,000
Commercial Portfolio Segment [Member] \| Loans Secured by Real Estate [Member] \| Secured by Nonfarm, Nonresidential Properties [Member] \| Substandard [Member]	'	'
Financing Receivable [Abstract]	'	'
Financing receivable commercial	87,203,000	98,082,000
Commercial Portfolio Segment [Member] \| Loans Secured by Real Estate [Member] \| Secured by Nonfarm, Nonresidential Properties [Member] \| Doubtful [Member]	'	'
Financing Receivable [Abstract]	'	'
Financing receivable commercial	399,000	0
Commercial Portfolio Segment [Member] \| Loans Secured by Real Estate [Member] \| Other Real Estate Secured Financing Receivable [Member]	'	'
Financing Receivable [Abstract]	'	'
Financing receivable commercial	185,942,000	185,002,000
Commercial Portfolio Segment [Member] \| Loans Secured by Real Estate [Member] \| Other Real Estate Secured Financing Receivable [Member] \| Pass [Member]	'	'
Financing Receivable [Abstract]	'	'
Financing receivable commercial	178,951,000	178,790,000
Commercial Portfolio Segment [Member] \| Loans Secured by Real Estate [Member] \| Other Real Estate Secured Financing Receivable [Member] \| Special Mention [Member]	'	'
Financing Receivable [Abstract]	'	'
Financing receivable commercial	0	444,000
Commercial Portfolio Segment [Member] \| Loans Secured by Real Estate [Member] \| Other Real Estate Secured Financing Receivable [Member] \| Substandard [Member]	'	'
Financing Receivable [Abstract]	'	'
Financing receivable commercial	6,756,000	5,768,000
Commercial Portfolio Segment [Member] \| Loans Secured by Real Estate [Member] \| Other Real Estate Secured Financing Receivable [Member] \| Doubtful [Member]	'	'
Financing Receivable [Abstract]	'	'
Financing receivable commercial	235,000	0
Commercial Portfolio Segment [Member] \| Commercial and Industrial Loans [Member]	'	'
Financing Receivable [Abstract]	'	'
Financing receivable commercial	1,157,596,000	1,169,161,000
Commercial Portfolio Segment [Member] \| Commercial and Industrial Loans [Member] \| Pass [Member]	'	'
Financing Receivable [Abstract]	'	'
Financing receivable commercial	1,099,429,000	1,091,356,000
Commercial Portfolio Segment [Member] \| Commercial and Industrial Loans [Member] \| Special Mention [Member]	'	'
Financing Receivable [Abstract]	'	'
Financing receivable commercial	18,771,000	36,992,000
Commercial Portfolio Segment [Member] \| Commercial and Industrial Loans [Member] \| Substandard [Member]	'	'
Financing Receivable [Abstract]	'	'
Financing receivable commercial	37,209,000	39,479,000
Commercial Portfolio Segment [Member] \| Commercial and Industrial Loans [Member] \| Doubtful [Member]	'	'
Financing Receivable [Abstract]	'	'
Financing receivable commercial	2,187,000	1,334,000
Commercial Portfolio Segment [Member] \| Consumer Loans [Member]	'	'
Financing Receivable [Abstract]	'	'
Financing receivable commercial	496,000	404,000
Commercial Portfolio Segment [Member] \| Consumer Loans [Member] \| Pass [Member]	'	'
Financing Receivable [Abstract]	'	'
Financing receivable commercial	496,000	404,000
Commercial Portfolio Segment [Member] \| Consumer Loans [Member] \| Special Mention [Member]	'	'
Financing Receivable [Abstract]	'	'
Financing receivable commercial	0	0
Commercial Portfolio Segment [Member] \| Consumer Loans [Member] \| Substandard [Member]	'	'
Financing Receivable [Abstract]	'	'
Financing receivable commercial	0	0
Commercial Portfolio Segment [Member] \| Consumer Loans [Member] \| Doubtful [Member]	'	'
Financing Receivable [Abstract]	'	'
Financing receivable commercial	0	0
Commercial Portfolio Segment [Member] \| Other Loans [Member]	'	'
Financing Receivable [Abstract]	'	'
Financing receivable commercial	782,250,000	679,175,000
Commercial Portfolio Segment [Member] \| Other Loans [Member] \| Pass [Member]	'	'
Financing Receivable [Abstract]	'	'
Financing receivable commercial	777,395,000	676,618,000
Commercial Portfolio Segment [Member] \| Other Loans [Member] \| Special Mention [Member]	'	'
Financing Receivable [Abstract]	'	'
Financing receivable commercial	60,000	59,000
Commercial Portfolio Segment [Member] \| Other Loans [Member] \| Substandard [Member]	'	'
Financing Receivable [Abstract]	'	'
Financing receivable commercial	4,126,000	1,714,000
Commercial Portfolio Segment [Member] \| Other Loans [Member] \| Doubtful [Member]	'	'
Financing Receivable [Abstract]	'	'
Financing receivable commercial	669,000	784,000
Consumer Portfolio Segment [Member]	'	'
Financing Receivable Aging [Abstract]	'	'
Current	1,552,447,000	1,562,265,000
Past Due 30 - 89 Days	11,095,000	15,101,000
Past Due Greater Than 90 Days	3,298,000	2,915,000
Nonaccrual	18,306,000	21,627,000
Subtotal	1,585,146,000	1,601,908,000
Total LHFI	5,798,881,000	5,592,754,000
Consumer Portfolio Segment [Member] \| Loans Secured by Real Estate [Member] \| Construction Land Development and Other Land Loans [Member]	'	'
Financing Receivable Aging [Abstract]	'	'
Current	50,850,000	44,131,000
Past Due 30 - 89 Days	131,000	1,109,000
Past Due Greater Than 90 Days	0	0
Nonaccrual	217,000	769,000
Subtotal	51,198,000	46,009,000
Total LHFI	596,889,000	468,975,000
Consumer Portfolio Segment [Member] \| Loans Secured by Real Estate [Member] \| Secured by 1-4 Family Residential Properties [Member]	'	'
Financing Receivable Aging [Abstract]	'	'
Current	1,327,624,000	1,339,000,000
Past Due 30 - 89 Days	8,937,000	10,332,000
Past Due Greater Than 90 Days	2,996,000	2,630,000
Nonaccrual	17,939,000	20,438,000
Subtotal	1,357,496,000	1,372,400,000
Total LHFI	1,485,564,000	1,497,480,000
Consumer Portfolio Segment [Member] \| Loans Secured by Real Estate [Member] \| Secured by Nonfarm, Nonresidential Properties [Member]	'	'
Financing Receivable Aging [Abstract]	'	'
Current	1,439,000	1,206,000
Past Due 30 - 89 Days	8,000	0
Past Due Greater Than 90 Days	0	0
Nonaccrual	0	0
Subtotal	1,447,000	1,206,000
Total LHFI	1,415,139,000	1,410,264,000
Consumer Portfolio Segment [Member] \| Loans Secured by Real Estate [Member] \| Other Real Estate Secured Financing Receivable [Member]	'	'
Financing Receivable Aging [Abstract]	'	'
Current	3,418,000	4,746,000
Past Due 30 - 89 Days	2,000	150,000
Past Due Greater Than 90 Days	0	0
Nonaccrual	0	51,000
Subtotal	3,420,000	4,947,000
Total LHFI	189,362,000	189,949,000
Consumer Portfolio Segment [Member] \| Commercial and Industrial Loans [Member]	'	'
Financing Receivable Aging [Abstract]	'	'
Current	13,000	313,000
Past Due 30 - 89 Days	5,000	29,000
Past Due Greater Than 90 Days	0	0
Nonaccrual	0	10,000
Subtotal	18,000	352,000
Total LHFI	1,157,614,000	1,169,513,000
Consumer Portfolio Segment [Member] \| Consumer Loans [Member]	'	'
Financing Receivable Aging [Abstract]	'	'
Current	162,348,000	167,131,000
Past Due 30 - 89 Days	2,012,000	3,481,000
Past Due Greater Than 90 Days	302,000	285,000
Nonaccrual	150,000	359,000
Subtotal	164,812,000	171,256,000
Total LHFI	165,308,000	171,660,000
Consumer Portfolio Segment [Member] \| Other Loans [Member]	'	'
Financing Receivable Aging [Abstract]	'	'
Current	6,755,000	5,738,000
Past Due 30 - 89 Days	0	0
Past Due Greater Than 90 Days	0	0
Nonaccrual	0	0
Subtotal	6,755,000	5,738,000
Total LHFI	$789,005,000	$684,913,000

Loans_Held_for_Investment_LHFI7

Loans Held for Investment (LHFI) and Allowance for Loan Losses, LHFI (5) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012
Financing Receivable, Recorded Investment, Aging [Abstract]	'		'
Past Due 30 - 89 Days	$15,445,000		$35,193,000
Past Due Greater Than 90 Days	3,298,000	[1]	6,378,000	[1]
Total Past Due	18,743,000		41,571,000
Nonaccrual	65,238,000		82,363,000
Current Loans	5,714,900,000		5,468,820,000
Total LHFI	5,798,881,000		5,592,754,000
Covered Serviced Financing Receivable Available for Repurchase, Recorded Investment, Equal to Greater than 90 Days Past Due	21,500,000		43,100,000
Percentage of Outstanding Principal To Be Repurchased Under GNMA Optional Repurchase Program (in hundredths)	100.00%		'
Loans Secured by Real Estate [Member] \| Construction Land Development and Other Land Loans [Member]	'		'
Financing Receivable, Recorded Investment, Aging [Abstract]	'		'
Past Due 30 - 89 Days	923,000		4,957,000
Past Due Greater Than 90 Days	0	[1]	438,000	[1]
Total Past Due	923,000		5,395,000
Nonaccrual	13,327,000		27,105,000
Current Loans	582,639,000		436,475,000
Total LHFI	596,889,000		468,975,000
Loans Secured by Real Estate [Member] \| Secured by 1-4 Family Residential Properties [Member]	'		'
Financing Receivable, Recorded Investment, Aging [Abstract]	'		'
Past Due 30 - 89 Days	9,437,000		12,626,000
Past Due Greater Than 90 Days	2,996,000	[1]	3,131,000	[1]
Total Past Due	12,433,000		15,757,000
Nonaccrual	21,603,000		27,114,000
Current Loans	1,451,528,000		1,454,609,000
Total LHFI	1,485,564,000		1,497,480,000
Loans Secured by Real Estate [Member] \| Secured by Nonfarm, Nonresidential Properties [Member]	'		'
Financing Receivable, Recorded Investment, Aging [Abstract]	'		'
Past Due 30 - 89 Days	2,044,000		9,460,000
Past Due Greater Than 90 Days	0	[1]	0	[1]
Total Past Due	2,044,000		9,460,000
Nonaccrual	21,809,000		18,289,000
Current Loans	1,391,286,000		1,382,515,000
Total LHFI	1,415,139,000		1,410,264,000
Loans Secured by Real Estate [Member] \| Other Real Estate Secured Financing Receivable [Member]	'		'
Financing Receivable, Recorded Investment, Aging [Abstract]	'		'
Past Due 30 - 89 Days	5,000		172,000
Past Due Greater Than 90 Days	0	[1]	0	[1]
Total Past Due	5,000		172,000
Nonaccrual	1,327,000		3,956,000
Current Loans	188,030,000		185,821,000
Total LHFI	189,362,000		189,949,000
Commercial And Industrial Loans [Member]	'		'
Financing Receivable, Recorded Investment, Aging [Abstract]	'		'
Past Due 30 - 89 Days	1,007,000		4,317,000
Past Due Greater Than 90 Days	0	[1]	2,525,000	[1]
Total Past Due	1,007,000		6,842,000
Nonaccrual	6,286,000		4,741,000
Current Loans	1,150,321,000		1,157,930,000
Total LHFI	1,157,614,000		1,169,513,000
Consumer Loans [Member]	'		'
Financing Receivable, Recorded Investment, Aging [Abstract]	'		'
Past Due 30 - 89 Days	2,012,000		3,480,000
Past Due Greater Than 90 Days	302,000	[1]	284,000	[1]
Total Past Due	2,314,000		3,764,000
Nonaccrual	151,000		360,000
Current Loans	162,843,000		167,536,000
Total LHFI	165,308,000		171,660,000
Other Loans [Member]	'		'
Financing Receivable, Recorded Investment, Aging [Abstract]	'		'
Past Due 30 - 89 Days	17,000		181,000
Past Due Greater Than 90 Days	0	[1]	0	[1]
Total Past Due	17,000		181,000
Nonaccrual	735,000		798,000
Current Loans	788,253,000		683,934,000
Total LHFI	$789,005,000		$684,913,000

[1]	Past due 90 days or more but still accruing interest.

Loans_Held_for_Investment_LHFI8

Loans Held for Investment (LHFI) and Allowance for Loan Losses, LHFI (6) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
	Scale
	LoanPool
	Factor
	Loan
Financing Receivable, Allowance for Credit Losses [Roll Forward]	'	'	'
Balance at beginning of period	$78,738,000	$89,518,000	$93,510,000
Loans charged-off	-13,478,000	-31,376,000	-45,769,000
Recoveries	14,609,000	13,830,000	12,073,000
Net recoveries (charge-offs)	1,131,000	-17,546,000	-33,696,000
Provision for loan losses, LHFI	-13,421,000	6,766,000	29,704,000
Balance at end of period	66,448,000	78,738,000	89,518,000
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]	'	'	'
Total	66,448,000	78,738,000	89,518,000
Gain on repurchase and sale of loans	534,000	'	'
Number of Loan Types For Commercial Portfolio	9	'	'
Number of Risk Rate Factors For Commercial Loans	450	'	'
Number Of Unique Qualitative Factors Used To Analyze Consumer Loans	5	'	'
The Minimum Score For Qualitative Risk Factor	0	'	'
The Maximum Score For Qualitative Risk Factor	100	'	'
One time additional provision due to revision of methodology	1,600,000	1,400,000	'
Number of loan pools over which weighted-average qualitative factor applied	6	'	'
Allowance for Loan Loses, LHFI [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Roll Forward]	'	'	'
Balance at beginning of period	78,738,000	89,518,000	'
Loans charged-off	-13,478,000	-31,376,000	'
Recoveries	14,609,000	13,830,000	'
Provision for loan losses, LHFI	-13,421,000	6,766,000	'
Balance at end of period	66,448,000	78,738,000	'
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]	'	'	'
Individually	5,181,000	10,504,000	'
Collectively	61,267,000	68,234,000	'
Total	66,448,000	78,738,000	'
Real Estate Secured Financing Receivable [Member] \| Construction Land Development and Other Land Loans [Member] \| Allowance for Loan Loses, LHFI [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Roll Forward]	'	'	'
Balance at beginning of period	21,838,000	27,220,000	'
Loans charged-off	-1,441,000	-3,480,000	'
Recoveries	3,077,000	0	'
Provision for loan losses, LHFI	-10,309,000	-1,902,000	'
Balance at end of period	13,165,000	21,838,000	'
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]	'	'	'
Individually	988,000	4,992,000	'
Collectively	12,177,000	16,846,000	'
Total	13,165,000	21,838,000	'
Real Estate Secured Financing Receivable [Member] \| Secured by 1-4 Family Residential Properties [Member] \| Allowance for Loan Loses, LHFI [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Roll Forward]	'	'	'
Balance at beginning of period	12,957,000	12,650,000	'
Loans charged-off	-1,298,000	-5,532,000	'
Recoveries	427,000	435,000	'
Provision for loan losses, LHFI	-2,453,000	5,404,000	'
Balance at end of period	9,633,000	12,957,000	'
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]	'	'	'
Individually	191,000	1,469,000	'
Collectively	9,442,000	11,488,000	'
Total	9,633,000	12,957,000	'
Real Estate Secured Financing Receivable [Member] \| Secured by Nonfarm, Nonresidential Properties [Member] \| Allowance for Loan Loses, LHFI [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Roll Forward]	'	'	'
Balance at beginning of period	21,096,000	24,358,000	'
Loans charged-off	-1,002,000	-5,410,000	'
Recoveries	225,000	0	'
Provision for loan losses, LHFI	-647,000	2,148,000	'
Balance at end of period	19,672,000	21,096,000	'
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]	'	'	'
Individually	2,307,000	2,296,000	'
Collectively	17,365,000	18,800,000	'
Total	19,672,000	21,096,000	'
Real Estate Secured Financing Receivable [Member] \| Other Loans Secured by Real Estate [Member] \| Allowance for Loan Loses, LHFI [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Roll Forward]	'	'	'
Balance at beginning of period	2,197,000	3,079,000	'
Loans charged-off	-910,000	-1,601,000	'
Recoveries	229,000	0	'
Provision for loan losses, LHFI	564,000	719,000	'
Balance at end of period	2,080,000	2,197,000	'
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]	'	'	'
Individually	123,000	760,000	'
Collectively	1,957,000	1,437,000	'
Total	2,080,000	2,197,000	'
Commercial And Industrial Loans [Member] \| Allowance for Loan Loses, LHFI [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Roll Forward]	'	'	'
Balance at beginning of period	14,319,000	15,868,000	'
Loans charged-off	-1,371,000	-6,922,000	'
Recoveries	2,298,000	3,916,000	'
Provision for loan losses, LHFI	276,000	1,457,000	'
Balance at end of period	15,522,000	14,319,000	'
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]	'	'	'
Individually	1,253,000	640,000	'
Collectively	14,269,000	13,679,000	'
Total	15,522,000	14,319,000	'
Consumer Loans [Member] \| Allowance for Loan Loses, LHFI [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Roll Forward]	'	'	'
Balance at beginning of period	3,087,000	3,656,000	'
Loans charged-off	-2,425,000	-3,082,000	'
Recoveries	4,798,000	6,211,000	'
Provision for loan losses, LHFI	-3,055,000	-3,698,000	'
Balance at end of period	2,405,000	3,087,000	'
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]	'	'	'
Individually	2,000	5,000	'
Collectively	2,403,000	3,082,000	'
Total	2,405,000	3,087,000	'
Other Loans [Member] \| Allowance for Loan Loses, LHFI [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Roll Forward]	'	'	'
Balance at beginning of period	3,244,000	2,687,000	'
Loans charged-off	-5,031,000	-5,349,000	'
Recoveries	3,555,000	3,268,000	'
Provision for loan losses, LHFI	2,203,000	2,638,000	'
Balance at end of period	3,971,000	3,244,000	'
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]	'	'	'
Individually	317,000	342,000	'
Collectively	3,654,000	2,902,000	'
Total	$3,971,000	$3,244,000	'

Acquired_Loans_Details

Acquired Loans (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Covered [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Acquired loans	$34,216	$52,041
Less allowance for loan losses, acquired loans	2,387	4,190
Net acquired loans	31,829	47,851
Noncovered [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Acquired loans	769,990	81,523
Less allowance for loan losses, acquired loans	7,249	1,885
Net acquired loans	762,741	79,638
Real Estate Secured Financing Receivable [Member] \| Construction Land Development And Other Financing Receivable [Member] \| Covered [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Acquired loans	2,363	3,924
Real Estate Secured Financing Receivable [Member] \| Construction Land Development And Other Financing Receivable [Member] \| Noncovered [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Acquired loans	98,928	10,056
Real Estate Secured Financing Receivable [Member] \| Secured by 1-4 Family Residential Properties [Member] \| Covered [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Acquired loans	16,416	23,990
Real Estate Secured Financing Receivable [Member] \| Secured by 1-4 Family Residential Properties [Member] \| Noncovered [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Acquired loans	157,914	19,404
Real Estate Secured Financing Receivable [Member] \| Secured by Nonfarm, Nonresidential Properties [Member] \| Covered [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Acquired loans	10,945	18,407
Real Estate Secured Financing Receivable [Member] \| Secured by Nonfarm, Nonresidential Properties [Member] \| Noncovered [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Acquired loans	287,136	45,649
Real Estate Secured Financing Receivable [Member] \| Other Real Estate Secured Financing Receivable [Member] \| Covered [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Acquired loans	2,644	3,567
Real Estate Secured Financing Receivable [Member] \| Other Real Estate Secured Financing Receivable [Member] \| Noncovered [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Acquired loans	33,948	669
Commercial And Industrial Loans [Member] \| Covered [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Acquired loans	394	747
Commercial And Industrial Loans [Member] \| Noncovered [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Acquired loans	149,495	3,035
Consumer Loans Financing Receivable [Member] \| Covered [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Acquired loans	119	177
Consumer Loans Financing Receivable [Member] \| Noncovered [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Acquired loans	18,428	2,610
Other Loans Financing Receivable [Member] \| Covered [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Acquired loans	1,335	1,229
Other Loans Financing Receivable [Member] \| Noncovered [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Acquired loans	$24,141	$100

Acquired_Loans_Part_1_Details

Acquired Loans Part 1 (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012		Dec. 31, 2011		Feb. 15, 2013	Mar. 16, 2012
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012		Dec. 31, 2011		BancTrust Financial Group, Inc. [Member]	Bay Bank and Trust Company [Member]
At acquisition date [Abstract]	'	'		'		'	'
Contractually required principal and interest	'	'		'		$1,256,669	$134,615
Nonaccretable difference	'	'		'		201,324	20,161
Cash flows expected to be collected	'	'		'		1,055,345	114,454
Accretable yield	-109,006	-26,383	[1]	-17,653	[1]	98,394	15,538
FASB ASC Topic 310-20 discount	'	'		'		12,716	1,002
Fair value of loans at acquisition	'	'		'		$944,235	$97,914

[1]	Accretable yield at January 1, 2012, includes $777 thousand of accretable yield for noncovered loans acquired from Heritage and accounted for under FASB ASC Topic 310-30.

Acquired_Loans_Part_2_Details

Acquired Loans Part 2 (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
Carrying value of acquired loans [Abstract]	'		'
Accretion to interest income	$40,688		$12,169
Acquired Impaired [Member] \| Covered Loans [Member]	'		'
Carrying value of acquired loans [Abstract]	'		'
Net carrying value, beginning	45,391		72,131
Loans acquired	0	[1]	0	[2]
Accretion to interest income	5,150		8,031
Payments received, net	-18,976		-27,496
Other	-3,202		-3,085
Less allowance for loan losses, acquired loans	1,803		-4,190
Net carrying value, ending	30,166		45,391
Acquired Impaired [Member] \| Noncovered Loans [Member]	'		'
Carrying value of acquired loans [Abstract]	'		'
Net carrying value, beginning	72,942		4,350
Loans acquired	790,335	[1]	91,987	[2]
Accretion to interest income	35,538		4,138
Payments received, net	-229,618		-24,330
Other	-24,177		-1,318
Less allowance for loan losses, acquired loans	-5,364		-1,885
Net carrying value, ending	639,656		72,942
Acquired Not ASC 310-30 [Member] \| Covered Loans [Member]	'		'
Carrying value of acquired loans [Abstract]	'		'
Net carrying value, beginning	2,460	[3]	4,171	[3]
Loans acquired	0	[1],[3]	0	[2],[3]
Accretion to interest income	159	[3]	367	[3]
Payments received, net	-819	[3]	-2,107	[3]
Other	-137	[3]	29	[3]
Less allowance for loan losses, acquired loans	0	[3]	0	[3]
Net carrying value, ending	1,663	[3]	2,460	[3]
Acquired Not ASC 310-30 [Member] \| Noncovered Loans [Member]	'		'
Carrying value of acquired loans [Abstract]	'		'
Net carrying value, beginning	6,696	[3]	13	[3]
Loans acquired	153,900	[1],[3]	5,927	[2],[3]
Accretion to interest income	2,628	[3]	161	[3]
Payments received, net	-39,281	[3]	868	[3]
Other	-858	[3]	-273	[3]
Less allowance for loan losses, acquired loans	0	[3]	0	[3]
Net carrying value, ending	$123,085	[3]	$6,696	[3]

[1]	Adjusted fair value of loans acquired from BancTrust on February 15, 2013.
[2]	Fair value of loans acquired from Bay Bank on March 16, 2012.
[3]	Acquired nonimpaired loans consist of revolving credit agreements and commercial leases that are not in scope for FASB ASC Topic 310-30.

Acquired_Loans_Part_3_Details

Acquired Loans Part 3 (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Feb. 15, 2013	Mar. 16, 2012
	Dec. 31, 2013		Dec. 31, 2012		BancTrust Financial Group, Inc. [Member]	Bay Bank and Trust Company [Member]
Change in accretable difference on acquired loans [Abstract]	'		'		'	'
Accretable yield, beginning	($26,383)	[1]	($17,653)	[1]	$98,394	$15,538
Additions due to acquisition	-98,394	[2]	-15,538	[2]	'	'
Accretion to interest income	40,688		12,169		'	'
Disposals	18,438		3,757		'	'
Reclassification to / (from) nonaccretable difference	-43,355		-9,118		'	'
Accretable yield, ending	($109,006)		($26,383)	[1]	$98,394	$15,538

[1]	Accretable yield at January 1, 2012, includes $777 thousand of accretable yield for noncovered loans acquired from Heritage and accounted for under FASB ASC Topic 310-30.
[2]	Accretable yield on loans acquired from BancTrust on February 15, 2013 and Bay Bank on March 16, 2012.

Acquired_Loans_Part_4_Details

Acquired Loans Part 4 (Details) (USD $)	12 Months Ended					12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Feb. 15, 2013	Mar. 16, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
	CreditRiskGrade	Dec. 31, 2012	BancTrust Financial Group, Inc. [Member]	BancTrust Financial Group, Inc. [Member]	Bay Bank and Trust Company [Member]	Covered Loans [Member]	Covered Loans [Member]	Noncovered Loans [Member]	Noncovered Loans [Member]
Allowance for loan loss [Abstract]	'	'	'	'	'	'	'	'	'
Balance, beginning	$6,075,000	$502,000	'	'	'	$4,190,000	$502,000	$1,885,000	$0
Provision for loan losses, acquired loans	6,039,000	5,528,000	'	'	'	-1,328,000	3,612,000	7,367,000	1,916,000
Loans charged-off	-4,094,000	-371,000	'	'	'	-460,000	-81,000	-3,634,000	-290,000
Recoveries	1,616,000	416,000	'	'	'	-15,000	157,000	1,631,000	259,000
Net (charge-offs) recoveries	-2,478,000	45,000	'	'	'	-475,000	76,000	-2,003,000	-31,000
Balance, ending	9,636,000	6,075,000	'	'	'	2,387,000	4,190,000	7,249,000	1,885,000
Revolving credit agreements acquired	'	'	'	153,900,000	5,900,000	'	'	'	'
Decrease in acquired non covered loans as measurement period adjustment	'	'	6,800,000	'	'	'	'	'	'
Number of individual credit risk grades	10	'	'	'	'	'	'	'	'
Nonaccrual loans not accounted for under FASB ASC Topic 310-30	$2,400,000	$1,100,000	'	'	'	'	'	'	'

Acquired_Loans_Part_5_Details

Acquired Loans Part 5 (Details) (USD $)	Dec. 31, 2013		Dec. 31, 2012
In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
Acquired Loans, Aging [Abstract]	'		'
Current	$718,638		$111,779
Past Due 30-89 Days	19,771		10,608
Past Due Greater Than 90 Days	63,444	[1]	10,074	[1]
Nonaccrual	2,353	[2]	1,103	[2]
Percentage of risk of losses incurred on acquired covered loans (in hundredths)	20.00%		20.00%
Covered [Member]	'		'
Acquired Loans, Aging [Abstract]	'		'
Current	27,006		41,377
Past Due 30-89 Days	3,588		6,213
Past Due Greater Than 90 Days	3,136	[1]	3,724	[1]
Nonaccrual	486	[2]	727	[2]
Noncovered [Member]	'		'
Acquired Loans, Aging [Abstract]	'		'
Current	691,632		70,402
Past Due 30-89 Days	16,183		4,395
Past Due Greater Than 90 Days	60,308	[1]	6,350	[1]
Nonaccrual	1,867	[2]	376	[2]
Real Estate Secured Financing Receivable [Member] \| Construction Land Development And Other Financing Receivable [Member] \| Covered [Member]	'		'
Acquired Loans, Aging [Abstract]	'		'
Current	1,278		2,993
Past Due 30-89 Days	87		240
Past Due Greater Than 90 Days	553	[1]	246	[1]
Nonaccrual	445	[2]	445	[2]
Real Estate Secured Financing Receivable [Member] \| Construction Land Development And Other Financing Receivable [Member] \| Noncovered [Member]	'		'
Acquired Loans, Aging [Abstract]	'		'
Current	65,001		6,434
Past Due 30-89 Days	2,116		0
Past Due Greater Than 90 Days	31,744	[1]	3,622	[1]
Nonaccrual	67	[2]	0	[2]
Real Estate Secured Financing Receivable [Member] \| Secured by 1-4 Family Residential Properties [Member] \| Covered [Member]	'		'
Acquired Loans, Aging [Abstract]	'		'
Current	14,401		20,168
Past Due 30-89 Days	873		1,705
Past Due Greater Than 90 Days	1,142	[1]	1,883	[1]
Nonaccrual	0	[2]	234	[2]
Real Estate Secured Financing Receivable [Member] \| Secured by 1-4 Family Residential Properties [Member] \| Noncovered [Member]	'		'
Acquired Loans, Aging [Abstract]	'		'
Current	145,142		17,311
Past Due 30-89 Days	5,067		458
Past Due Greater Than 90 Days	7,589	[1]	1,392	[1]
Nonaccrual	116	[2]	243	[2]
Real Estate Secured Financing Receivable [Member] \| Secured by Nonfarm, Nonresidential Properties [Member] \| Covered [Member]	'		'
Acquired Loans, Aging [Abstract]	'		'
Current	8,247		12,915
Past Due 30-89 Days	1,905		3,953
Past Due Greater Than 90 Days	793	[1]	1,539	[1]
Nonaccrual	0	[2]	0	[2]
Real Estate Secured Financing Receivable [Member] \| Secured by Nonfarm, Nonresidential Properties [Member] \| Noncovered [Member]	'		'
Acquired Loans, Aging [Abstract]	'		'
Current	263,276		40,773
Past Due 30-89 Days	7,978		3,526
Past Due Greater Than 90 Days	15,421	[1]	1,217	[1]
Nonaccrual	461	[2]	133	[2]
Real Estate Secured Financing Receivable [Member] \| Other Real Estate Secured Financing Receivable [Member] \| Covered [Member]	'		'
Acquired Loans, Aging [Abstract]	'		'
Current	1,932		3,285
Past Due 30-89 Days	710		221
Past Due Greater Than 90 Days	2	[1]	52	[1]
Nonaccrual	0	[2]	9	[2]
Real Estate Secured Financing Receivable [Member] \| Other Real Estate Secured Financing Receivable [Member] \| Noncovered [Member]	'		'
Acquired Loans, Aging [Abstract]	'		'
Current	31,953		595
Past Due 30-89 Days	40		30
Past Due Greater Than 90 Days	1,922	[1]	44	[1]
Nonaccrual	33	[2]	0	[2]
Commercial And Industrial Loans Financing Receivable [Member] \| Covered [Member]	'		'
Acquired Loans, Aging [Abstract]	'		'
Current	340		610
Past Due 30-89 Days	13		94
Past Due Greater Than 90 Days	0	[1]	4	[1]
Nonaccrual	41	[2]	39	[2]
Commercial And Industrial Loans Financing Receivable [Member] \| Noncovered [Member]	'		'
Acquired Loans, Aging [Abstract]	'		'
Current	144,195		2,795
Past Due 30-89 Days	743		217
Past Due Greater Than 90 Days	3,387	[1]	23	[1]
Nonaccrual	1,170	[2]	0	[2]
Consumer Loans Financing Receivable [Member] \| Covered [Member]	'		'
Acquired Loans, Aging [Abstract]	'		'
Current	119		177
Past Due 30-89 Days	0		0
Past Due Greater Than 90 Days	0	[1]	0	[1]
Nonaccrual	0	[2]	0	[2]
Consumer Loans Financing Receivable [Member] \| Noncovered [Member]	'		'
Acquired Loans, Aging [Abstract]	'		'
Current	18,097		2,394
Past Due 30-89 Days	239		164
Past Due Greater Than 90 Days	92	[1]	52	[1]
Nonaccrual	0	[2]	0	[2]
Other Loans Financing Receivable [Member] \| Covered [Member]	'		'
Acquired Loans, Aging [Abstract]	'		'
Current	689		1,229
Past Due 30-89 Days	0		0
Past Due Greater Than 90 Days	646	[1]	0	[1]
Nonaccrual	0	[2]	0	[2]
Other Loans Financing Receivable [Member] \| Noncovered [Member]	'		'
Acquired Loans, Aging [Abstract]	'		'
Current	23,968		100
Past Due 30-89 Days	0		0
Past Due Greater Than 90 Days	153	[1]	0	[1]
Nonaccrual	20	[2]	0	[2]
Commercial Portfolio Segment [Member] \| Pass [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	433,015		47,308
Commercial Portfolio Segment [Member] \| Pass [Member] \| Covered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	8,660	[3]	11,096	[3]
Commercial Portfolio Segment [Member] \| Pass [Member] \| Noncovered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	424,355		36,212
Commercial Portfolio Segment [Member] \| Special Mention [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	18,902		6,460
Commercial Portfolio Segment [Member] \| Special Mention [Member] \| Covered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	701	[3]	2,656	[3]
Commercial Portfolio Segment [Member] \| Special Mention [Member] \| Noncovered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	18,201		3,804
Commercial Portfolio Segment [Member] \| Substandard [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	186,787		43,866
Commercial Portfolio Segment [Member] \| Substandard [Member] \| Covered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	8,890	[3]	16,051	[3]
Commercial Portfolio Segment [Member] \| Substandard [Member] \| Noncovered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	177,897		27,815
Commercial Portfolio Segment [Member] \| Doubtful [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	22,494		3,937
Commercial Portfolio Segment [Member] \| Doubtful [Member] \| Covered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	1,419	[3]	2,162	[3]
Commercial Portfolio Segment [Member] \| Doubtful [Member] \| Noncovered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	21,075		1,775
Commercial Portfolio Segment [Member] \| Commercial Subtotal [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	661,198		101,571
Commercial Portfolio Segment [Member] \| Commercial Subtotal [Member] \| Covered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	19,670	[3]	31,965	[3]
Commercial Portfolio Segment [Member] \| Commercial Subtotal [Member] \| Noncovered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	641,528		69,606
Commercial Portfolio Segment [Member] \| Real Estate Secured Financing Receivable [Member] \| Construction Land Development And Other Financing Receivable [Member] \| Pass [Member] \| Covered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	228	[3]	1,341	[3]
Commercial Portfolio Segment [Member] \| Real Estate Secured Financing Receivable [Member] \| Construction Land Development And Other Financing Receivable [Member] \| Pass [Member] \| Noncovered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	39,075		3,259
Commercial Portfolio Segment [Member] \| Real Estate Secured Financing Receivable [Member] \| Construction Land Development And Other Financing Receivable [Member] \| Special Mention [Member] \| Covered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	0	[3]	18	[3]
Commercial Portfolio Segment [Member] \| Real Estate Secured Financing Receivable [Member] \| Construction Land Development And Other Financing Receivable [Member] \| Special Mention [Member] \| Noncovered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	2,506		119
Commercial Portfolio Segment [Member] \| Real Estate Secured Financing Receivable [Member] \| Construction Land Development And Other Financing Receivable [Member] \| Substandard [Member] \| Covered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	1,126	[3]	1,489	[3]
Commercial Portfolio Segment [Member] \| Real Estate Secured Financing Receivable [Member] \| Construction Land Development And Other Financing Receivable [Member] \| Substandard [Member] \| Noncovered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	42,486		4,915
Commercial Portfolio Segment [Member] \| Real Estate Secured Financing Receivable [Member] \| Construction Land Development And Other Financing Receivable [Member] \| Doubtful [Member] \| Covered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	771	[3]	744	[3]
Commercial Portfolio Segment [Member] \| Real Estate Secured Financing Receivable [Member] \| Construction Land Development And Other Financing Receivable [Member] \| Doubtful [Member] \| Noncovered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	8,445		921
Commercial Portfolio Segment [Member] \| Real Estate Secured Financing Receivable [Member] \| Construction Land Development And Other Financing Receivable [Member] \| Commercial Subtotal [Member] \| Covered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	2,125	[3]	3,592	[3]
Commercial Portfolio Segment [Member] \| Real Estate Secured Financing Receivable [Member] \| Construction Land Development And Other Financing Receivable [Member] \| Commercial Subtotal [Member] \| Noncovered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	92,512		9,214
Commercial Portfolio Segment [Member] \| Real Estate Secured Financing Receivable [Member] \| Secured by 1-4 Family Residential Properties [Member] \| Pass [Member] \| Covered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	1,629	[3]	3,128	[3]
Commercial Portfolio Segment [Member] \| Real Estate Secured Financing Receivable [Member] \| Secured by 1-4 Family Residential Properties [Member] \| Pass [Member] \| Noncovered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	33,810		7,325
Commercial Portfolio Segment [Member] \| Real Estate Secured Financing Receivable [Member] \| Secured by 1-4 Family Residential Properties [Member] \| Special Mention [Member] \| Covered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	430	[3]	810	[3]
Commercial Portfolio Segment [Member] \| Real Estate Secured Financing Receivable [Member] \| Secured by 1-4 Family Residential Properties [Member] \| Special Mention [Member] \| Noncovered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	2,983		0
Commercial Portfolio Segment [Member] \| Real Estate Secured Financing Receivable [Member] \| Secured by 1-4 Family Residential Properties [Member] \| Substandard [Member] \| Covered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	1,798	[3]	2,940	[3]
Commercial Portfolio Segment [Member] \| Real Estate Secured Financing Receivable [Member] \| Secured by 1-4 Family Residential Properties [Member] \| Substandard [Member] \| Noncovered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	17,422		3,708
Commercial Portfolio Segment [Member] \| Real Estate Secured Financing Receivable [Member] \| Secured by 1-4 Family Residential Properties [Member] \| Doubtful [Member] \| Covered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	0	[3]	85	[3]
Commercial Portfolio Segment [Member] \| Real Estate Secured Financing Receivable [Member] \| Secured by 1-4 Family Residential Properties [Member] \| Doubtful [Member] \| Noncovered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	538		23
Commercial Portfolio Segment [Member] \| Real Estate Secured Financing Receivable [Member] \| Secured by 1-4 Family Residential Properties [Member] \| Commercial Subtotal [Member] \| Covered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	3,857	[3]	6,963	[3]
Commercial Portfolio Segment [Member] \| Real Estate Secured Financing Receivable [Member] \| Secured by 1-4 Family Residential Properties [Member] \| Commercial Subtotal [Member] \| Noncovered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	54,753		11,056
Commercial Portfolio Segment [Member] \| Real Estate Secured Financing Receivable [Member] \| Secured by Nonfarm, Nonresidential Properties [Member] \| Pass [Member] \| Covered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	5,446	[3]	5,857	[3]
Commercial Portfolio Segment [Member] \| Real Estate Secured Financing Receivable [Member] \| Secured by Nonfarm, Nonresidential Properties [Member] \| Pass [Member] \| Noncovered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	184,594		22,453
Commercial Portfolio Segment [Member] \| Real Estate Secured Financing Receivable [Member] \| Secured by Nonfarm, Nonresidential Properties [Member] \| Special Mention [Member] \| Covered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	109	[3]	1,052	[3]
Commercial Portfolio Segment [Member] \| Real Estate Secured Financing Receivable [Member] \| Secured by Nonfarm, Nonresidential Properties [Member] \| Special Mention [Member] \| Noncovered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	9,027		3,596
Commercial Portfolio Segment [Member] \| Real Estate Secured Financing Receivable [Member] \| Secured by Nonfarm, Nonresidential Properties [Member] \| Substandard [Member] \| Covered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	4,723	[3]	9,839	[3]
Commercial Portfolio Segment [Member] \| Real Estate Secured Financing Receivable [Member] \| Secured by Nonfarm, Nonresidential Properties [Member] \| Substandard [Member] \| Noncovered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	88,952		18,682
Commercial Portfolio Segment [Member] \| Real Estate Secured Financing Receivable [Member] \| Secured by Nonfarm, Nonresidential Properties [Member] \| Doubtful [Member] \| Covered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	0	[3]	798	[3]
Commercial Portfolio Segment [Member] \| Real Estate Secured Financing Receivable [Member] \| Secured by Nonfarm, Nonresidential Properties [Member] \| Doubtful [Member] \| Noncovered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	4,563		831
Commercial Portfolio Segment [Member] \| Real Estate Secured Financing Receivable [Member] \| Secured by Nonfarm, Nonresidential Properties [Member] \| Commercial Subtotal [Member] \| Covered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	10,278	[3]	17,546	[3]
Commercial Portfolio Segment [Member] \| Real Estate Secured Financing Receivable [Member] \| Secured by Nonfarm, Nonresidential Properties [Member] \| Commercial Subtotal [Member] \| Noncovered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	287,136		45,562
Commercial Portfolio Segment [Member] \| Real Estate Secured Financing Receivable [Member] \| Other Real Estate Secured Financing Receivable [Member] \| Pass [Member] \| Covered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	832	[3]	443	[3]
Commercial Portfolio Segment [Member] \| Real Estate Secured Financing Receivable [Member] \| Other Real Estate Secured Financing Receivable [Member] \| Pass [Member] \| Noncovered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	28,156		236
Commercial Portfolio Segment [Member] \| Real Estate Secured Financing Receivable [Member] \| Other Real Estate Secured Financing Receivable [Member] \| Special Mention [Member] \| Covered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	134	[3]	318	[3]
Commercial Portfolio Segment [Member] \| Real Estate Secured Financing Receivable [Member] \| Other Real Estate Secured Financing Receivable [Member] \| Special Mention [Member] \| Noncovered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	1,437		0
Commercial Portfolio Segment [Member] \| Real Estate Secured Financing Receivable [Member] \| Other Real Estate Secured Financing Receivable [Member] \| Substandard [Member] \| Covered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	717	[3]	1,231	[3]
Commercial Portfolio Segment [Member] \| Real Estate Secured Financing Receivable [Member] \| Other Real Estate Secured Financing Receivable [Member] \| Substandard [Member] \| Noncovered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	4,071		417
Commercial Portfolio Segment [Member] \| Real Estate Secured Financing Receivable [Member] \| Other Real Estate Secured Financing Receivable [Member] \| Doubtful [Member] \| Covered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	2	[3]	0	[3]
Commercial Portfolio Segment [Member] \| Real Estate Secured Financing Receivable [Member] \| Other Real Estate Secured Financing Receivable [Member] \| Doubtful [Member] \| Noncovered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	184		0
Commercial Portfolio Segment [Member] \| Real Estate Secured Financing Receivable [Member] \| Other Real Estate Secured Financing Receivable [Member] \| Commercial Subtotal [Member] \| Covered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	1,685	[3]	1,992	[3]
Commercial Portfolio Segment [Member] \| Real Estate Secured Financing Receivable [Member] \| Other Real Estate Secured Financing Receivable [Member] \| Commercial Subtotal [Member] \| Noncovered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	33,848		653
Commercial Portfolio Segment [Member] \| Commercial And Industrial Loans Financing Receivable [Member] \| Pass [Member] \| Covered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	254	[3]	82	[3]
Commercial Portfolio Segment [Member] \| Commercial And Industrial Loans Financing Receivable [Member] \| Pass [Member] \| Noncovered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	116,818		2,853
Commercial Portfolio Segment [Member] \| Commercial And Industrial Loans Financing Receivable [Member] \| Special Mention [Member] \| Covered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	28	[3]	458	[3]
Commercial Portfolio Segment [Member] \| Commercial And Industrial Loans Financing Receivable [Member] \| Special Mention [Member] \| Noncovered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	2,248		89
Commercial Portfolio Segment [Member] \| Commercial And Industrial Loans Financing Receivable [Member] \| Substandard [Member] \| Covered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	112	[3]	207	[3]
Commercial Portfolio Segment [Member] \| Commercial And Industrial Loans Financing Receivable [Member] \| Substandard [Member] \| Noncovered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	24,084		93
Commercial Portfolio Segment [Member] \| Commercial And Industrial Loans Financing Receivable [Member] \| Doubtful [Member] \| Covered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	0	[3]	0	[3]
Commercial Portfolio Segment [Member] \| Commercial And Industrial Loans Financing Receivable [Member] \| Doubtful [Member] \| Noncovered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	6,039		0
Commercial Portfolio Segment [Member] \| Commercial And Industrial Loans Financing Receivable [Member] \| Commercial Subtotal [Member] \| Covered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	394	[3]	747	[3]
Commercial Portfolio Segment [Member] \| Commercial And Industrial Loans Financing Receivable [Member] \| Commercial Subtotal [Member] \| Noncovered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	149,189		3,035
Commercial Portfolio Segment [Member] \| Consumer Loans Financing Receivable [Member] \| Pass [Member] \| Covered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	0	[3]	0	[3]
Commercial Portfolio Segment [Member] \| Consumer Loans Financing Receivable [Member] \| Pass [Member] \| Noncovered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	21		0
Commercial Portfolio Segment [Member] \| Consumer Loans Financing Receivable [Member] \| Special Mention [Member] \| Covered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	0	[3]	0	[3]
Commercial Portfolio Segment [Member] \| Consumer Loans Financing Receivable [Member] \| Special Mention [Member] \| Noncovered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	0		0
Commercial Portfolio Segment [Member] \| Consumer Loans Financing Receivable [Member] \| Substandard [Member] \| Covered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	0	[3]	0	[3]
Commercial Portfolio Segment [Member] \| Consumer Loans Financing Receivable [Member] \| Substandard [Member] \| Noncovered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	0		0
Commercial Portfolio Segment [Member] \| Consumer Loans Financing Receivable [Member] \| Doubtful [Member] \| Covered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	0	[3]	0	[3]
Commercial Portfolio Segment [Member] \| Consumer Loans Financing Receivable [Member] \| Doubtful [Member] \| Noncovered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	0		0
Commercial Portfolio Segment [Member] \| Consumer Loans Financing Receivable [Member] \| Commercial Subtotal [Member] \| Covered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	0	[3]	0	[3]
Commercial Portfolio Segment [Member] \| Consumer Loans Financing Receivable [Member] \| Commercial Subtotal [Member] \| Noncovered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	21		0
Commercial Portfolio Segment [Member] \| Other Loans Financing Receivable [Member] \| Pass [Member] \| Covered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	271	[3]	245	[3]
Commercial Portfolio Segment [Member] \| Other Loans Financing Receivable [Member] \| Pass [Member] \| Noncovered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	21,881		86
Commercial Portfolio Segment [Member] \| Other Loans Financing Receivable [Member] \| Special Mention [Member] \| Covered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	0	[3]	0	[3]
Commercial Portfolio Segment [Member] \| Other Loans Financing Receivable [Member] \| Special Mention [Member] \| Noncovered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	0		0
Commercial Portfolio Segment [Member] \| Other Loans Financing Receivable [Member] \| Substandard [Member] \| Covered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	414	[3]	345	[3]
Commercial Portfolio Segment [Member] \| Other Loans Financing Receivable [Member] \| Substandard [Member] \| Noncovered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	882		0
Commercial Portfolio Segment [Member] \| Other Loans Financing Receivable [Member] \| Doubtful [Member] \| Covered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	646	[3]	535	[3]
Commercial Portfolio Segment [Member] \| Other Loans Financing Receivable [Member] \| Doubtful [Member] \| Noncovered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	1,306		0
Commercial Portfolio Segment [Member] \| Other Loans Financing Receivable [Member] \| Commercial Subtotal [Member] \| Covered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	1,331	[3]	1,125	[3]
Commercial Portfolio Segment [Member] \| Other Loans Financing Receivable [Member] \| Commercial Subtotal [Member] \| Noncovered [Member]	'		'
Acquired Loans, Commercial Loans [Abstract]	'		'
Acquired loans	24,069		86
Consumer Portfolio Segment [Member]	'		'
Acquired Loans, Aging [Abstract]	'		'
Current	132,901		28,086
Past Due 30-89 Days	4,793		1,792
Past Due Greater Than 90 Days	5,205		2,009
Nonaccrual	109		106
Subtotal	143,008		31,993
Total acquired loans	804,206		133,564
Consumer Portfolio Segment [Member] \| Covered [Member]	'		'
Acquired Loans, Aging [Abstract]	'		'
Current	12,547	[3]	17,058	[3]
Past Due 30-89 Days	847	[3]	1,271	[3]
Past Due Greater Than 90 Days	1,152	[3]	1,702	[3]
Nonaccrual	0	[3]	45	[3]
Subtotal	14,546	[3]	20,076	[3]
Total acquired loans	34,216	[3]	52,041	[3]
Consumer Portfolio Segment [Member] \| Noncovered [Member]	'		'
Acquired Loans, Aging [Abstract]	'		'
Current	120,354		11,028
Past Due 30-89 Days	3,946		521
Past Due Greater Than 90 Days	4,053		307
Nonaccrual	109		61
Subtotal	128,462		11,917
Total acquired loans	769,990		81,523
Consumer Portfolio Segment [Member] \| Real Estate Secured Financing Receivable [Member] \| Construction Land Development And Other Financing Receivable [Member] \| Covered [Member]	'		'
Acquired Loans, Aging [Abstract]	'		'
Current	133	[3]	306	[3]
Past Due 30-89 Days	77	[3]	26	[3]
Past Due Greater Than 90 Days	28	[3]	0	[3]
Nonaccrual	0	[3]	0	[3]
Subtotal	238	[3]	332	[3]
Total acquired loans	2,363	[3]	3,924	[3]
Consumer Portfolio Segment [Member] \| Real Estate Secured Financing Receivable [Member] \| Construction Land Development And Other Financing Receivable [Member] \| Noncovered [Member]	'		'
Acquired Loans, Aging [Abstract]	'		'
Current	5,813		802
Past Due 30-89 Days	108		0
Past Due Greater Than 90 Days	495		40
Nonaccrual	0		0
Subtotal	6,416		842
Total acquired loans	98,928		10,056
Consumer Portfolio Segment [Member] \| Real Estate Secured Financing Receivable [Member] \| Secured by 1-4 Family Residential Properties [Member] \| Covered [Member]	'		'
Acquired Loans, Aging [Abstract]	'		'
Current	11,179	[3]	14,311	[3]
Past Due 30-89 Days	428	[3]	1,028	[3]
Past Due Greater Than 90 Days	952	[3]	1,650	[3]
Nonaccrual	0	[3]	38	[3]
Subtotal	12,559	[3]	17,027	[3]
Total acquired loans	16,416	[3]	23,990	[3]
Consumer Portfolio Segment [Member] \| Real Estate Secured Financing Receivable [Member] \| Secured by 1-4 Family Residential Properties [Member] \| Noncovered [Member]	'		'
Acquired Loans, Aging [Abstract]	'		'
Current	95,987		7,715
Past Due 30-89 Days	3,599		357
Past Due Greater Than 90 Days	3,466		215
Nonaccrual	109		61
Subtotal	103,161		8,348
Total acquired loans	157,914		19,404
Consumer Portfolio Segment [Member] \| Real Estate Secured Financing Receivable [Member] \| Secured by Nonfarm, Nonresidential Properties [Member] \| Covered [Member]	'		'
Acquired Loans, Aging [Abstract]	'		'
Current	495	[3]	692	[3]
Past Due 30-89 Days	0	[3]	169	[3]
Past Due Greater Than 90 Days	172	[3]	0	[3]
Nonaccrual	0	[3]	0	[3]
Subtotal	667	[3]	861	[3]
Total acquired loans	10,945	[3]	18,407	[3]
Consumer Portfolio Segment [Member] \| Real Estate Secured Financing Receivable [Member] \| Secured by Nonfarm, Nonresidential Properties [Member] \| Noncovered [Member]	'		'
Acquired Loans, Aging [Abstract]	'		'
Current	0		87
Past Due 30-89 Days	0		0
Past Due Greater Than 90 Days	0		0
Nonaccrual	0		0
Subtotal	0		87
Total acquired loans	287,136		45,649
Consumer Portfolio Segment [Member] \| Real Estate Secured Financing Receivable [Member] \| Other Real Estate Secured Financing Receivable [Member] \| Covered [Member]	'		'
Acquired Loans, Aging [Abstract]	'		'
Current	617	[3]	1,468	[3]
Past Due 30-89 Days	342	[3]	48	[3]
Past Due Greater Than 90 Days	0	[3]	52	[3]
Nonaccrual	0	[3]	7	[3]
Subtotal	959	[3]	1,575	[3]
Total acquired loans	2,644	[3]	3,567	[3]
Consumer Portfolio Segment [Member] \| Real Estate Secured Financing Receivable [Member] \| Other Real Estate Secured Financing Receivable [Member] \| Noncovered [Member]	'		'
Acquired Loans, Aging [Abstract]	'		'
Current	100		16
Past Due 30-89 Days	0		0
Past Due Greater Than 90 Days	0		0
Nonaccrual	0		0
Subtotal	100		16
Total acquired loans	33,948		669
Consumer Portfolio Segment [Member] \| Commercial And Industrial Loans Financing Receivable [Member] \| Covered [Member]	'		'
Acquired Loans, Aging [Abstract]	'		'
Current	0	[3]	0	[3]
Past Due 30-89 Days	0	[3]	0	[3]
Past Due Greater Than 90 Days	0	[3]	0	[3]
Nonaccrual	0	[3]	0	[3]
Subtotal	0	[3]	0	[3]
Total acquired loans	394	[3]	747	[3]
Consumer Portfolio Segment [Member] \| Commercial And Industrial Loans Financing Receivable [Member] \| Noncovered [Member]	'		'
Acquired Loans, Aging [Abstract]	'		'
Current	306		0
Past Due 30-89 Days	0		0
Past Due Greater Than 90 Days	0		0
Nonaccrual	0		0
Subtotal	306		0
Total acquired loans	149,495		3,035
Consumer Portfolio Segment [Member] \| Consumer Loans Financing Receivable [Member] \| Covered [Member]	'		'
Acquired Loans, Aging [Abstract]	'		'
Current	119	[3]	177	[3]
Past Due 30-89 Days	0	[3]	0	[3]
Past Due Greater Than 90 Days	0	[3]	0	[3]
Nonaccrual	0	[3]	0	[3]
Subtotal	119	[3]	177	[3]
Total acquired loans	119	[3]	177	[3]
Consumer Portfolio Segment [Member] \| Consumer Loans Financing Receivable [Member] \| Noncovered [Member]	'		'
Acquired Loans, Aging [Abstract]	'		'
Current	18,076		2,394
Past Due 30-89 Days	239		164
Past Due Greater Than 90 Days	92		52
Nonaccrual	0		0
Subtotal	18,407		2,610
Total acquired loans	18,428		2,610
Consumer Portfolio Segment [Member] \| Other Loans Financing Receivable [Member] \| Covered [Member]	'		'
Acquired Loans, Aging [Abstract]	'		'
Current	4	[3]	104	[3]
Past Due 30-89 Days	0	[3]	0	[3]
Past Due Greater Than 90 Days	0	[3]	0	[3]
Nonaccrual	0	[3]	0	[3]
Subtotal	4	[3]	104	[3]
Total acquired loans	1,335	[3]	1,229	[3]
Consumer Portfolio Segment [Member] \| Other Loans Financing Receivable [Member] \| Noncovered [Member]	'		'
Acquired Loans, Aging [Abstract]	'		'
Current	72		14
Past Due 30-89 Days	0		0
Past Due Greater Than 90 Days	0		0
Nonaccrual	0		0
Subtotal	72		14
Total acquired loans	$24,141		$100

[1]	Past due 90 days or more but still accruing interest.
[2]	Acquired loans not accounted for under FASB ASC Topic 310-30.
[3]	Total dollar balances are presented in this table; however, these loans are covered by the loss-share agreement with the FDIC. TNB is at risk for only 20% of the losses incurred on these loans.

Acquired_Loans_Part_6_Details

Acquired Loans Part 6 (Details) (USD $)	Dec. 31, 2013		Dec. 31, 2012
In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
Acquired Loans, Aging [Abstract]	'		'
Past Due 30 - 89 Days	$19,771		$10,608
Past Due Greater Than 90 Days	63,444	[1]	10,074	[1]
Total Past Due	83,215		20,682
Nonaccrual	2,353	[2]	1,103	[2]
Current Loans	718,638		111,779
Acquired loans	804,206		133,564
Covered [Member]	'		'
Acquired Loans, Aging [Abstract]	'		'
Past Due 30 - 89 Days	3,588		6,213
Past Due Greater Than 90 Days	3,136	[1]	3,724	[1]
Total Past Due	6,724		9,937
Nonaccrual	486	[2]	727	[2]
Current Loans	27,006		41,377
Acquired loans	34,216		52,041
Noncovered [Member]	'		'
Acquired Loans, Aging [Abstract]	'		'
Past Due 30 - 89 Days	16,183		4,395
Past Due Greater Than 90 Days	60,308	[1]	6,350	[1]
Total Past Due	76,491		10,745
Nonaccrual	1,867	[2]	376	[2]
Current Loans	691,632		70,402
Acquired loans	769,990		81,523
Real Estate Secured Financing Receivable [Member] \| Construction Land Development And Other Financing Receivable [Member] \| Covered [Member]	'		'
Acquired Loans, Aging [Abstract]	'		'
Past Due 30 - 89 Days	87		240
Past Due Greater Than 90 Days	553	[1]	246	[1]
Total Past Due	640		486
Nonaccrual	445	[2]	445	[2]
Current Loans	1,278		2,993
Acquired loans	2,363		3,924
Real Estate Secured Financing Receivable [Member] \| Construction Land Development And Other Financing Receivable [Member] \| Noncovered [Member]	'		'
Acquired Loans, Aging [Abstract]	'		'
Past Due 30 - 89 Days	2,116		0
Past Due Greater Than 90 Days	31,744	[1]	3,622	[1]
Total Past Due	33,860		3,622
Nonaccrual	67	[2]	0	[2]
Current Loans	65,001		6,434
Acquired loans	98,928		10,056
Real Estate Secured Financing Receivable [Member] \| Secured by 1-4 Family Residential Properties [Member] \| Covered [Member]	'		'
Acquired Loans, Aging [Abstract]	'		'
Past Due 30 - 89 Days	873		1,705
Past Due Greater Than 90 Days	1,142	[1]	1,883	[1]
Total Past Due	2,015		3,588
Nonaccrual	0	[2]	234	[2]
Current Loans	14,401		20,168
Acquired loans	16,416		23,990
Real Estate Secured Financing Receivable [Member] \| Secured by 1-4 Family Residential Properties [Member] \| Noncovered [Member]	'		'
Acquired Loans, Aging [Abstract]	'		'
Past Due 30 - 89 Days	5,067		458
Past Due Greater Than 90 Days	7,589	[1]	1,392	[1]
Total Past Due	12,656		1,850
Nonaccrual	116	[2]	243	[2]
Current Loans	145,142		17,311
Acquired loans	157,914		19,404
Real Estate Secured Financing Receivable [Member] \| Secured by Nonfarm, Nonresidential Properties [Member] \| Covered [Member]	'		'
Acquired Loans, Aging [Abstract]	'		'
Past Due 30 - 89 Days	1,905		3,953
Past Due Greater Than 90 Days	793	[1]	1,539	[1]
Total Past Due	2,698		5,492
Nonaccrual	0	[2]	0	[2]
Current Loans	8,247		12,915
Acquired loans	10,945		18,407
Real Estate Secured Financing Receivable [Member] \| Secured by Nonfarm, Nonresidential Properties [Member] \| Noncovered [Member]	'		'
Acquired Loans, Aging [Abstract]	'		'
Past Due 30 - 89 Days	7,978		3,526
Past Due Greater Than 90 Days	15,421	[1]	1,217	[1]
Total Past Due	23,399		4,743
Nonaccrual	461	[2]	133	[2]
Current Loans	263,276		40,773
Acquired loans	287,136		45,649
Real Estate Secured Financing Receivable [Member] \| Other Real Estate Secured Financing Receivable [Member] \| Covered [Member]	'		'
Acquired Loans, Aging [Abstract]	'		'
Past Due 30 - 89 Days	710		221
Past Due Greater Than 90 Days	2	[1]	52	[1]
Total Past Due	712		273
Nonaccrual	0	[2]	9	[2]
Current Loans	1,932		3,285
Acquired loans	2,644		3,567
Real Estate Secured Financing Receivable [Member] \| Other Real Estate Secured Financing Receivable [Member] \| Noncovered [Member]	'		'
Acquired Loans, Aging [Abstract]	'		'
Past Due 30 - 89 Days	40		30
Past Due Greater Than 90 Days	1,922	[1]	44	[1]
Total Past Due	1,962		74
Nonaccrual	33	[2]	0	[2]
Current Loans	31,953		595
Acquired loans	33,948		669
Commercial And Industrial Loans Financing Receivable [Member] \| Covered [Member]	'		'
Acquired Loans, Aging [Abstract]	'		'
Past Due 30 - 89 Days	13		94
Past Due Greater Than 90 Days	0	[1]	4	[1]
Total Past Due	13		98
Nonaccrual	41	[2]	39	[2]
Current Loans	340		610
Acquired loans	394		747
Commercial And Industrial Loans Financing Receivable [Member] \| Noncovered [Member]	'		'
Acquired Loans, Aging [Abstract]	'		'
Past Due 30 - 89 Days	743		217
Past Due Greater Than 90 Days	3,387	[1]	23	[1]
Total Past Due	4,130		240
Nonaccrual	1,170	[2]	0	[2]
Current Loans	144,195		2,795
Acquired loans	149,495		3,035
Consumer Loans Financing Receivable [Member] \| Covered [Member]	'		'
Acquired Loans, Aging [Abstract]	'		'
Past Due 30 - 89 Days	0		0
Past Due Greater Than 90 Days	0	[1]	0	[1]
Total Past Due	0		0
Nonaccrual	0	[2]	0	[2]
Current Loans	119		177
Acquired loans	119		177
Consumer Loans Financing Receivable [Member] \| Noncovered [Member]	'		'
Acquired Loans, Aging [Abstract]	'		'
Past Due 30 - 89 Days	239		164
Past Due Greater Than 90 Days	92	[1]	52	[1]
Total Past Due	331		216
Nonaccrual	0	[2]	0	[2]
Current Loans	18,097		2,394
Acquired loans	18,428		2,610
Other Loans Financing Receivable [Member] \| Covered [Member]	'		'
Acquired Loans, Aging [Abstract]	'		'
Past Due 30 - 89 Days	0		0
Past Due Greater Than 90 Days	646	[1]	0	[1]
Total Past Due	646		0
Nonaccrual	0	[2]	0	[2]
Current Loans	689		1,229
Acquired loans	1,335		1,229
Other Loans Financing Receivable [Member] \| Noncovered [Member]	'		'
Acquired Loans, Aging [Abstract]	'		'
Past Due 30 - 89 Days	0		0
Past Due Greater Than 90 Days	153	[1]	0	[1]
Total Past Due	153		0
Nonaccrual	20	[2]	0	[2]
Current Loans	23,968		100
Acquired loans	$24,141		$100

[1]	Past due 90 days or more but still accruing interest.
[2]	Acquired loans not accounted for under FASB ASC Topic 310-30.

Premises_and_Equipment_Net_Det

Premises and Equipment, Net (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Premises and Equipment, Net, by Type [Abstract]	'	'
Premises and equipment, gross	$412,741	$346,736
Less accumulated depreciation and amortization	205,458	191,895
Premises and equipment, net	207,283	154,841
Land [Member]	'	'
Premises and Equipment, Net, by Type [Abstract]	'	'
Premises and equipment, gross	58,132	40,327
Building and Leasehold Improvements [Member]	'	'
Premises and Equipment, Net, by Type [Abstract]	'	'
Premises and equipment, gross	199,976	163,638
Furniture and Equipment [Member]	'	'
Premises and Equipment, Net, by Type [Abstract]	'	'
Premises and equipment, gross	$154,633	$142,771

Mortgage_Banking_Details

Mortgage Banking (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
	CPR	CPR	Dec. 31, 2011
Mortgage servicing rights [Abstract]	'	'	'
Balance at beginning of period	$47,341,000	$43,274,000	'
Origination of servicing assets	18,481,000	23,253,000	'
Change in fair value:	'	'	'
Due to market changes	11,818,000	-9,378,000	'
Due to runoff	-9,806,000	-9,808,000	'
Balance at end of period	67,834,000	47,341,000	43,274,000
Assumed average prepayment speed	9.72	16.98	'
Average discount rate (in hundredths)	10.52%	10.71%	'
Residential mortgage loans sold	1,358,000,000	1,816,000,000	969,400,000
Gains on sales of residential mortgage loans, before tax	26,400,000	33,900,000	12,000,000
Servicing fee income percentage of outstanding balance of underlying loans (in hundredths)	0.34%	'	'
Mortgage loans serviced for others	5,461,000,000	5,158,000,000	'
Period of putback response	'60 days	'	'
Mortgage loan servicing representation and warranty expenses	1,500,000	8,000,000	5,100,000
Additional accrual for mortgage loan servicing representation and warranty expenses	'	4,000,000	'
Payments to FNMA for repurchase obligations	3,600,000	'	'
Reserve for mortgage loan servicing putback expenses	$1,100,000	$7,800,000	'

Goodwill_and_Identifiable_Inta2

Goodwill and Identifiable Intangible Assets (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Goodwill [Roll Forward]	'	'	'
Goodwill	$291,104,000	'	'
Goodwill from acquisitions during 2013	81,747,000	'	'
Balance	372,851,000	291,104,000	'
Finite-Lived Intangible Assets [Line Items]	'	'	'
Gross Carrying Amount	99,532,000	66,035,000	'
Accumulated Amortization	57,542,000	48,729,000	'
Net Carrying Amount	41,990,000	17,306,000	'
Remaining Weighted-Average Amortization Period in Years	'8 years 4 months 24 days	'	'
Amortization expense of identifiable intangible assets	8,800,000	3,800,000	3,100,000
Future amortization expense for identifiable intangible assets [Abstract]	'	'	'
2014	8,800,000	'	'
2015	7,600,000	'	'
2016	6,700,000	'	'
2017	5,700,000	'	'
2018	4,800,000	'	'
Impairment losses on identifiable intangible assets	0	0	0
Core Deposit Intangibles [Member]	'	'	'
Finite-Lived Intangible Assets [Line Items]	'	'	'
Gross Carrying Amount	85,824,000	52,327,000	'
Accumulated Amortization	46,437,000	38,532,000	'
Net Carrying Amount	39,387,000	13,795,000	'
Remaining Weighted-Average Amortization Period in Years	'8 years 6 months	'	'
Insurance Intangibles [Member]	'	'	'
Finite-Lived Intangible Assets [Line Items]	'	'	'
Gross Carrying Amount	11,693,000	11,693,000	'
Accumulated Amortization	9,967,000	9,188,000	'
Net Carrying Amount	1,726,000	2,505,000	'
Remaining Weighted-Average Amortization Period in Years	'5 years 6 months	'	'
Banking Charters [Member]	'	'	'
Finite-Lived Intangible Assets [Line Items]	'	'	'
Gross Carrying Amount	1,325,000	1,325,000	'
Accumulated Amortization	678,000	612,000	'
Net Carrying Amount	647,000	713,000	'
Remaining Weighted-Average Amortization Period in Years	'9 years 8 months 12 days	'	'
Borrower Relationship Intangible [Member]	'	'	'
Finite-Lived Intangible Assets [Line Items]	'	'	'
Gross Carrying Amount	690,000	690,000	'
Accumulated Amortization	460,000	397,000	'
Net Carrying Amount	230,000	293,000	'
Remaining Weighted-Average Amortization Period in Years	'3 years 8 months 12 days	'	'
General Banking [Member]	'	'	'
Goodwill [Roll Forward]	'	'	'
Goodwill	246,736,000	'	'
Goodwill from acquisitions during 2013	81,747,000	'	'
Balance	328,483,000	'	'
Insurance [Member]	'	'	'
Goodwill [Roll Forward]	'	'	'
Goodwill	44,368,000	'	'
Goodwill from acquisitions during 2013	0	'	'
Balance	$44,368,000	'	'

Other_Real_Estate_and_Covered_2

Other Real Estate and Covered Other Real Estate (Details) (USD $)

12 Months Ended

In Thousands, unless otherwise specified

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Feb. 15, 2013

Mar. 16, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Market

Construction Land Development And Other Land Properties [Member]

1-4 Family Residential Properties [Member]

Nonfarm, Nonresidential Properties [Member]

BancTrust Financial Group, Inc. [Member]

Bay Bank and Trust Company [Member]

Construction, Land Development And Other Land Properties [Member]

1 - 4 Family Residential Properties [Member]

Nonfarm, Nonresidential Properties [Member]

Other Real Estate Properties [Member]

Other real estate, excluding covered other real estate [Rollforward]

Balance at beginning of period

$78,189

$79,053

$86,704

$65,273

$46,957

$14,696

$8,134

$26,433

$22,760

$137

$338

Additions

80,256

[1]

38,894

[1]

56,929

[1]

Disposals

-45,545

-33,155

-50,724

Writedowns

-6,361

-6,603

-13,856

Balance at end of period

106,539

78,189

79,053

65,273

46,957

14,696

8,134

26,433

22,760

137

338

(Loss) gain, net on the sale of noncovered other real estate included in ORE/Foreclosure expense

-881

-279

1,605

Other real estate, excluding covered other real estate [Line Items]

Total other real estate, excluding covered other real estate

106,539

78,189

79,053

65,273

46,957

14,696

8,134

26,433

22,760

137

338

Covered other real estate, beginning of period

5,741

6,331

733

1,284

1,981

1,306

2,394

3,151

Covered other real estate acquired

[2]

7,485

[2]

Transfers from covered loans

1,934

1,424

632

FASB ASC 310-30 adjustment for the residual recorded investment

-345

-112

-264

Net transfers from covered loans

1,589

1,312

368

Disposals

-1,442

-1,631

-1,489

Writedowns

-780

-271

-33

Covered other real estate, end of period

5,108

5,741

6,331

733

1,284

1,981

1,306

2,394

3,151

Gain, net on the sale of covered other real estate included in ORE/Foreclosure expenses

119

485

286

Business Acquisition [Line Items]

Business acquisition, covered other real estate acquired

40,100

2,600

Key market regions

Schedule Of Covered Loans And Other Real Estate Acquired [Line Items]

Total covered other real estate

$5,108

$5,741

$6,331

$733

$1,284

$1,981

$1,306

$2,394

$3,151

[1]

Includes $40.1 million of other real estate acquired from BancTrust on February 15, 2013, and $2.6 million of other real estate acquired from Bay Bank on March 16, 2012.

[2]

Covered other real estate acquired from Heritage on April 15, 2011.

Other_Real_Estate_and_Covered_3

Other Real Estate and Covered Other Real Estate, by geographical location (Details) (USD $)	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011	Dec. 31, 2010
In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011	Dec. 31, 2010
Other real estate, excluding covered other real estate by geographic location [Line Items]	'		'		'	'
Total other real estate, excluding covered other real estate	$106,539		$78,189		$79,053	$86,704
Alabama [Member]	'		'		'	'
Other real estate, excluding covered other real estate by geographic location [Line Items]	'		'		'	'
Total other real estate, excluding covered other real estate	25,912		0		'	'
Florida [Member]	'		'		'	'
Other real estate, excluding covered other real estate by geographic location [Line Items]	'		'		'	'
Total other real estate, excluding covered other real estate	34,480		18,569		'	'
Mississippi [Member]	'		'		'	'
Other real estate, excluding covered other real estate by geographic location [Line Items]	'		'		'	'
Total other real estate, excluding covered other real estate	22,766	[1]	27,771	[1]	'	'
Tennessee [Member]	'		'		'	'
Other real estate, excluding covered other real estate by geographic location [Line Items]	'		'		'	'
Total other real estate, excluding covered other real estate	12,892	[2]	17,589	[2]	'	'
Texas [Member]	'		'		'	'
Other real estate, excluding covered other real estate by geographic location [Line Items]	'		'		'	'
Total other real estate, excluding covered other real estate	$10,489		$14,260		'	'

[1]	Mississippi includes Central and Southern Mississippi Regions
[2]	Tennessee includes Memphis, Tennessee and Northern Mississippi Regions

FDIC_Indemnification_Asset_Det

FDIC Indemnification Asset (Details) (USD $)	12 Months Ended
FDIC Indemnification Asset (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
FDIC Indemnification Asset [Abstract]	'	'	'
FDIC True-up provisions	$1,500,000	$1,100,000	'
Amortization of FDIC indemnification asset included in other noninterest income	2,500,000	'	'
Reduction of FDIC indemnification asset included in other noninterest income	3,400,000	3,700,000	4,200,000
Balance, beginning of period	21,774,000	28,348,000	0
Additions from acquisition	0	0	33,333,000
(Amortization) accretion	-2,469,000	245,000	185,000
Transfers to FDIC claims	-851,000	-2,544,000	-986,000
Change in expected cash flows	-3,472,000	-3,761,000	-4,157,000
Change in FDIC true-up provision	-635,000	-514,000	-27,000
Balance, end of period	$14,347,000	$21,774,000	$28,348,000

Deposits_Details

Deposits (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Deposits [Abstract]	'	'	'
Noninterest-bearing demand deposits	$2,663,503	$2,254,211	'
Interest-bearing demand	1,923,701	1,481,182	'
Savings	2,997,294	2,322,280	'
Time	2,275,404	1,838,844	'
Total deposits	9,859,902	7,896,517	'
Interest expense on deposits by type [Abstract]	'	'	'
Interest-bearing demand	3,948	3,975	7,077
Savings	3,889	6,004	8,144
Time	11,881	14,625	21,073
Total	19,718	24,604	36,294
Maturities of time deposits of $ 100000 or more [Abstract]	'	'	'
3 months or less	242,757	161,806	'
Over 3 months through 6 months	208,863	142,026	'
Over 6 months through 12 months	312,189	221,056	'
Over 12 months	208,208	208,600	'
Total	972,017	733,488	'
Maturities of interest-bearing deposits [Abstract]	'	'	'
2014	1,808,342	'	'
2015	277,273	'	'
2016	83,288	'	'
2017	47,550	'	'
2018 and thereafter	58,951	'	'
Total time deposits	2,275,404	1,838,844	'
Interest-bearing deposits with no stated maturity	4,920,995	'	'
Total interest-bearing deposits	$7,196,399	$5,642,306	'

Borrowings_Details

Borrowings (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
	Loan	Dec. 31, 2012	Dec. 31, 2011
Short-Term Borrowings [Abstract]	'	'	'
Total short-term borrowings	$66,385,000	$86,920,000	'
Fair market value adjustment [Member]	'	'	'
Short-Term Borrowings [Abstract]	'	'	'
Total short-term borrowings	28,000	'	'
Atlanta [Member]	'	'	'
Short-Term Borrowings [Abstract]	'	'	'
Number of outstanding short-term FHLB advances	2	'	'
Weighted average cost related to FHLB advances (in hundredths)	4.24%	'	'
Weighted average remaining maturity	'134 days	'	'
Additional disclosures - Short Term Borrowings [Abstract]	'	'	'
Interest expense, short-term borrowings	6,000	81,000	215,000
Dallas [Member]	'	'	'
Short-Term Borrowings [Abstract]	'	'	'
Number of outstanding short-term FHLB advances	0	0	'
Total short-term borrowings	0	0	'
Additional disclosures - Short Term Borrowings [Abstract]	'	'	'
Additional debt instrument borrowing capacity	1,768,000,000	1,882,000,000	'
Advance One [Member] \| Atlanta [Member]	'	'	'
Short-Term Borrowings [Abstract]	'	'	'
Total short-term borrowings	2,000,000	'	'
Interest rate (in hundredths)	4.21%	'	'
Advance Two [Member] \| Atlanta [Member]	'	'	'
Short-Term Borrowings [Abstract]	'	'	'
Total short-term borrowings	34,000	'	'
Interest rate (in hundredths)	6.11%	'	'
Federal Home Loan Bank Advances [Member]	'	'	'
Short-Term Borrowings [Abstract]	'	'	'
Total short-term borrowings	2,062,000	0	'
Serviced GNMA Loans Eligible for Repurchase [Member]	'	'	'
Short-Term Borrowings [Abstract]	'	'	'
Total short-term borrowings	38,036,000	59,775,000	'
Other [Member]	'	'	'
Short-Term Borrowings [Abstract]	'	'	'
Total short-term borrowings	$26,287,000	$27,145,000	'

Borrowings_Longterm_Debt_Instr

Borrowings, Long-term Debt Instruments (Details) (USD $)	12 Months Ended
Borrowings, Long-term Debt Instruments (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Long-Term Borrowings [Abstract]	'	'	'
Long-term FHLB advance	$8,458,000	$0	'
Subordinated Notes	49,904,000	49,871,000	'
Federal Home Loan Bank Advances [Member]	'	'	'
Long-Term Borrowings [Abstract]	'	'	'
Interest expense, long-term	57,000	0	7,000
Weighted average remaining maturity	'2 years 10 months 6 days	'	'
Weighted average cost related to FHLB advances (in hundredths)	3.55%	'	'
Federal Home Loan Bank Advances [Member] \| Minimum [Member]	'	'	'
Long-Term Borrowings [Abstract]	'	'	'
Long-term FHLB advance	30,000	'	'
Interest rate (in hundredths)	0.08%	'	'
Federal Home Loan Bank Advances [Member] \| Maximum [Member]	'	'	'
Long-Term Borrowings [Abstract]	'	'	'
Long-term FHLB advance	6,500,000	'	'
Interest rate (in hundredths)	6.95%	'	'
Federal Home Loan Bank Advances [Member] \| Fair market value adjustment [Member]	'	'	'
Long-Term Borrowings [Abstract]	'	'	'
Long-term FHLB advance	412,000	'	'
Federal Home Loan Bank Advances [Member] \| Atlanta [Member]	'	'	'
Long-Term Borrowings [Abstract]	'	'	'
Number of outstanding long-term FHLB advances	6	'	'
Long-term FHLB advance	8,458,000	'	'
Subordinated Notes Payable [Member]	'	'	'
Long-Term Borrowings [Abstract]	'	'	'
Interest rate (in hundredths)	5.67%	'	'
Face amount of debt issued	50,000,000	'	'
Maturity date	15-Dec-16	'	'
Subordinated Notes	$49,904,000	$49,871,000	'
Percentage of debt qualify as Tier 2 Capital (in hundredths)	40.00%	'	'
Percentage of debt qualify as Tier 2 Capital yearly reduction (in hundredths)	20.00%	'	'
Subordinated Notes Payable [Member] \| Minimum [Member]	'	'	'
Long-Term Borrowings [Abstract]	'	'	'
Maturity period	'2 years	'	'
Subordinated Notes Payable [Member] \| Maximum [Member]	'	'	'
Long-Term Borrowings [Abstract]	'	'	'
Maturity period	'3 years	'	'

Borrowings_Junior_Subordinated

Borrowings, Junior Subordinated Debt Securities (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Variable Interest Entity [Line Items]	'	'	'
Junior subordinated debt securities	$61,856,000	$61,856,000	'
Total Assets	11,790,383,000	9,828,667,000	'
Total Liabilities and Shareholders' Equity	11,790,383,000	9,828,667,000	'
Common securities	14,038,000	13,506,000	'
Net income	117,060,000	117,283,000	106,841,000
Trustmark Preferred Capital Trust I [Member]	'	'	'
Variable Interest Entity [Line Items]	'	'	'
Total Assets	61,900,000	61,900,000	'
Total Liabilities and Shareholders' Equity	61,900,000	61,900,000	'
Common securities	1,900,000	1,900,000	'
Net income	37,600	41,300	38,100
Dividends paid	37,600	41,300	38,100
Trustmark Preferred Capital Trust I [Member] \| Junior Subordinated Debt Securities [Member]	'	'	'
Variable Interest Entity [Line Items]	'	'	'
Face amount of debt issued	60,000,000	'	'
Maturity date	30-Sep-36	'	'
Variable interest rate, description	'three-month LIBOR	'	'
Basis spread over LIBOR rate (in hundredths)	1.72%	'	'
Junior subordinated debt securities	$61,856,000	'	'
Consecutive quarters that Trustmark may defer interest payments (in quarters)	20	'	'

Income_Taxes_Details

Income Taxes (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Current [Abstract]	'	'	'
Federal	$14,537	$48,186	$46,749
State	1,237	2,366	4,712
Deferred [Abstract]	'	'	'
Federal	18,394	-7,349	-8,414
State	2,769	-1,103	-1,269
Income tax provision	36,937	42,100	41,778
Reconciliation of provision for tax from the federal rate to the effective tax rate [Abstract]	'	'	'
Income tax computed at statutory tax rate	53,899	55,784	52,017
Tax exempt interest	-5,222	-5,150	-5,244
Nondeductible interest expense	121	144	153
State income taxes, net	2,604	821	2,238
Income tax credits	-15,755	-9,255	-7,633
Other	1,290	-244	247
Income tax provision	36,937	42,100	41,778
Statutory federal income tax rate (in hundredths)	35.00%	35.00%	35.00%
Deferred tax assets [Abstract]	'	'	'
Loan purchase accounting	63,048	7,020	'
Other real estate	47,981	30,001	'
Allowance for loan losses	29,102	32,441	'
Deferred compensation	20,000	5,055	'
Securities	17,741	0	'
Realized built in losses	9,182	0	'
Pension and other postretirement benefit plans	7,511	32,507	'
Non accrual loans	4,452	1,178	'
Stock-based compensation	3,357	4,723	'
Other	14,771	12,025	'
Gross deferred tax asset	217,145	124,950	'
Valuation allowance	-16,000	0	'
Deferred tax asset net of valuation allowance	201,145	124,950	'
Deferred tax liabilities [Abstract]	'	'	'
Goodwill and other identifiable intangibles	29,809	18,707	'
Premises and equipment	21,543	17,339	'
Mortgage servicing rights	8,145	1,737	'
Leases	3,290	0	'
Unrealized gains on securities available for sale	1,969	27,834	'
Securities	1,270	2,055	'
Other	4,642	2,276	'
Gross deferred tax liability	70,668	69,948	'
Net deferred tax asset	130,477	55,002	'
Changes in unrecognized tax benefits [Roll Forward]	'	'	'
Balance at beginning of period	1,864	'	'
Increases due to tax positions taken during the current year	78	'	'
Decreases due to tax positions taken during a prior year	-8	'	'
Decreases due to the lapse of applicable statute of limitations during the current year	-155	'	'
Balance at end of period	1,779	1,864	'
Accrued interest, net of federal benefit, at end of period	435	'	'
Unrecognized tax benefits that would impact the effective tax rate, if recognized, at end of period	$1,173	'	'

Defined_Benefit_and_Other_Post2

Defined Benefit and Other Postretirement Benefits (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Other Benefit Plans - Defined Contribution Plan [Abstract]	'	'	'
Defined contribution plan contribution	$6,800,000	$5,700,000	$5,400,000
Defined Benefit Plans [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Years of service required to vest	'3 years	'	'
Change in benefit obligation [Roll Forward]	'	'	'
Benefit obligation, beginning of year	103,235,000	100,556,000	'
Benefit obligation from business combination	43,138,000	0	'
Service cost	595,000	547,000	522,000
Interest cost	4,758,000	3,942,000	4,460,000
Actuarial loss	-8,060,000	4,559,000	'
Benefits paid	-14,692,000	-6,369,000	'
Benefit obligation, end of year	128,974,000	103,235,000	100,556,000
Change in plan assets [ Roll Forward]	'	'	'
Fair value of plan assets, beginning of year	76,660,000	72,304,000	'
Fair value of plan assets from business combination	40,391,000	0	'
Actual return on plan assets	21,661,000	9,178,000	'
Employer contributions	2,122,000	1,547,000	'
Benefit payments	-14,692,000	-6,369,000	'
Fair value of plan assets, end of year	126,142,000	76,660,000	72,304,000
Funded status at end of year - net liability	-2,832,000	-26,575,000	'
Balance, end of period	126,142,000	76,660,000	72,304,000
Amounts recognized in accumulated other comprehensive income (loss) [Abstract]	'	'	'
Net loss - amount recognized	15,436,000	45,178,000	'
Net periodic benefit cost [Abstract]	'	'	'
Service cost	595,000	547,000	522,000
Interest cost	4,758,000	3,942,000	4,460,000
Expected return on plan assets	-7,720,000	-5,983,000	-5,882,000
Recognized net loss due to settlement	2,225,000	0	0
Recognized net actuarial loss	5,516,000	5,225,000	4,127,000
Net periodic benefit cost	5,374,000	3,731,000	3,227,000
Other changes in plan assets and benefit obligation recognized in other comprehensive (loss), before taxes [Abstract]	'	'	'
Total recognized in other comprehensive income (loss)	-29,742,000	-3,861,000	9,707,000
Total recognized in net periodic benefit cost and other comprehensive income (loss)	-24,368,000	-130,000	12,934,000
Weighted-average assumptions as of end of year [Abstract]	'	'	'
Discount rate for benefit obligation (in hundredths)	4.30%	3.50%	4.00%
Discount rate for net periodic benefit cost (in hundredths)	3.50%	4.00%	5.05%
Expected long-term return on plan assets (in hundredths)	7.50%	8.00%	8.00%
Rate of compensation increase (in hundredths)	3.00%	3.00%	3.00%
Asset target allocations [Abstract]	'	'	'
Weighted-average asset allocation (in hundredths)	100.00%	100.00%	'
Fair value of plan assets	126,142,000	76,660,000	72,304,000
Contributions [Abstract]	'	'	'
Period of average interest rate before MAP-21	'2 years	'	'
Period of average interest rate after MAP-21	'25 years	'	'
Pension funding contributions cap percentage (in hundredths)	115.00%	110.00%	'
Pension funding contributions floor percentage (in hundredths)	85.00%	90.00%	'
Minimum required contribution	2,100,000	1,500,000	'
Change in minimum required contribution	600,000	'	'
Defined Benefit Plan, Effective Interest Rate	6.13%	6.82%	'
Expected minimum required contribution in next fiscal year	2,000,000	'	'
Estimated future benefit payments [Abstract]	'	'	'
2014	12,220,000	'	'
2015	10,841,000	'	'
2016	9,576,000	'	'
2017	9,555,000	'	'
2018	8,133,000	'	'
2019 - 2023	40,755,000	'	'
Accumulated other comprehensive loss expected to be recognized during next fiscal year as components of net periodic benefit cost	4,400,000	'	'
Defined Benefit Plans [Member] \| Level 1 [ Member]	'	'	'
Change in plan assets [ Roll Forward]	'	'	'
Fair value of plan assets, end of year	119,416,000	75,469,000	'
Balance, end of period	119,416,000	75,469,000	'
Asset target allocations [Abstract]	'	'	'
Fair value of plan assets	119,416,000	75,469,000	'
Defined Benefit Plans [Member] \| Level 2 [Member]	'	'	'
Change in plan assets [ Roll Forward]	'	'	'
Fair value of plan assets, end of year	6,563,000	1,028,000	'
Balance, end of period	6,563,000	1,028,000	'
Asset target allocations [Abstract]	'	'	'
Fair value of plan assets	6,563,000	1,028,000	'
Defined Benefit Plans [Member] \| Level 3 [Member]	'	'	'
Change in plan assets [ Roll Forward]	'	'	'
Fair value of plan assets, end of year	163,000	163,000	'
Balance, end of period	163,000	163,000	'
Asset target allocations [Abstract]	'	'	'
Fair value of plan assets	163,000	163,000	'
Defined Benefit Plans [Member] \| Money Market Funds [Member]	'	'	'
Change in plan assets [ Roll Forward]	'	'	'
Fair value of plan assets, end of year	6,563,000	1,028,000	'
Balance, end of period	6,563,000	1,028,000	'
Asset target allocations [Abstract]	'	'	'
Weighted-average asset allocation (in hundredths)	5.20%	1.30%	'
Fair value of plan assets	6,563,000	1,028,000	'
Defined Benefit Plans [Member] \| Money Market Funds [Member] \| Level 1 [ Member]	'	'	'
Change in plan assets [ Roll Forward]	'	'	'
Fair value of plan assets, end of year	0	0	'
Balance, end of period	0	0	'
Asset target allocations [Abstract]	'	'	'
Fair value of plan assets	0	0	'
Defined Benefit Plans [Member] \| Money Market Funds [Member] \| Level 2 [Member]	'	'	'
Change in plan assets [ Roll Forward]	'	'	'
Fair value of plan assets, end of year	6,563,000	1,028,000	'
Balance, end of period	6,563,000	1,028,000	'
Asset target allocations [Abstract]	'	'	'
Fair value of plan assets	6,563,000	1,028,000	'
Defined Benefit Plans [Member] \| Money Market Funds [Member] \| Level 3 [Member]	'	'	'
Change in plan assets [ Roll Forward]	'	'	'
Fair value of plan assets, end of year	0	0	'
Balance, end of period	0	0	'
Asset target allocations [Abstract]	'	'	'
Fair value of plan assets	0	0	'
Defined Benefit Plans [Member] \| Fixed Income Mutual Funds [Member]	'	'	'
Change in plan assets [ Roll Forward]	'	'	'
Fair value of plan assets, end of year	22,225,000	15,145,000	'
Balance, end of period	22,225,000	15,145,000	'
Asset target allocations [Abstract]	'	'	'
Weighted-average asset allocation (in hundredths)	17.60%	19.80%	'
Fair value of plan assets	22,225,000	15,145,000	'
Defined Benefit Plans [Member] \| Fixed Income Mutual Funds [Member] \| Level 1 [ Member]	'	'	'
Change in plan assets [ Roll Forward]	'	'	'
Fair value of plan assets, end of year	22,225,000	15,145,000	'
Balance, end of period	22,225,000	15,145,000	'
Asset target allocations [Abstract]	'	'	'
Fair value of plan assets	22,225,000	15,145,000	'
Defined Benefit Plans [Member] \| Fixed Income Mutual Funds [Member] \| Level 2 [Member]	'	'	'
Change in plan assets [ Roll Forward]	'	'	'
Fair value of plan assets, end of year	0	0	'
Balance, end of period	0	0	'
Asset target allocations [Abstract]	'	'	'
Fair value of plan assets	0	0	'
Defined Benefit Plans [Member] \| Fixed Income Mutual Funds [Member] \| Level 3 [Member]	'	'	'
Change in plan assets [ Roll Forward]	'	'	'
Fair value of plan assets, end of year	0	0	'
Balance, end of period	0	0	'
Asset target allocations [Abstract]	'	'	'
Fair value of plan assets	0	0	'
Defined Benefit Plans [Member] \| Equity Mutual Funds [Member]	'	'	'
Change in plan assets [ Roll Forward]	'	'	'
Fair value of plan assets, end of year	73,608,000	48,414,000	'
Balance, end of period	73,608,000	48,414,000	'
Asset target allocations [Abstract]	'	'	'
Weighted-average asset allocation (in hundredths)	58.40%	63.20%	'
Fair value of plan assets	73,608,000	48,414,000	'
Defined Benefit Plans [Member] \| Equity Mutual Funds [Member] \| Level 1 [ Member]	'	'	'
Change in plan assets [ Roll Forward]	'	'	'
Fair value of plan assets, end of year	73,608,000	48,414,000	'
Balance, end of period	73,608,000	48,414,000	'
Asset target allocations [Abstract]	'	'	'
Fair value of plan assets	73,608,000	48,414,000	'
Defined Benefit Plans [Member] \| Equity Mutual Funds [Member] \| Level 2 [Member]	'	'	'
Change in plan assets [ Roll Forward]	'	'	'
Fair value of plan assets, end of year	0	0	'
Balance, end of period	0	0	'
Asset target allocations [Abstract]	'	'	'
Fair value of plan assets	0	0	'
Defined Benefit Plans [Member] \| Equity Mutual Funds [Member] \| Level 3 [Member]	'	'	'
Change in plan assets [ Roll Forward]	'	'	'
Fair value of plan assets, end of year	0	0	'
Balance, end of period	0	0	'
Asset target allocations [Abstract]	'	'	'
Fair value of plan assets	0	0	'
Defined Benefit Plans [Member] \| Equity Securities [Member]	'	'	'
Change in plan assets [ Roll Forward]	'	'	'
Fair value of plan assets, end of year	23,583,000	11,910,000	'
Balance, end of period	23,583,000	11,910,000	'
Asset target allocations [Abstract]	'	'	'
Weighted-average asset allocation (in hundredths)	18.70%	15.50%	'
Fair value of plan assets	23,583,000	11,910,000	'
Defined Benefit Plans [Member] \| Equity Securities [Member] \| Level 1 [ Member]	'	'	'
Change in plan assets [ Roll Forward]	'	'	'
Fair value of plan assets, end of year	23,583,000	11,910,000	'
Balance, end of period	23,583,000	11,910,000	'
Asset target allocations [Abstract]	'	'	'
Fair value of plan assets	23,583,000	11,910,000	'
Defined Benefit Plans [Member] \| Equity Securities [Member] \| Level 2 [Member]	'	'	'
Change in plan assets [ Roll Forward]	'	'	'
Fair value of plan assets, end of year	0	0	'
Balance, end of period	0	0	'
Asset target allocations [Abstract]	'	'	'
Fair value of plan assets	0	0	'
Defined Benefit Plans [Member] \| Equity Securities [Member] \| Level 3 [Member]	'	'	'
Change in plan assets [ Roll Forward]	'	'	'
Fair value of plan assets, end of year	0	0	'
Balance, end of period	0	0	'
Asset target allocations [Abstract]	'	'	'
Fair value of plan assets	0	0	'
Defined Benefit Plans [Member] \| Fixed Income Hedge Funds [Member]	'	'	'
Change in plan assets [ Roll Forward]	'	'	'
Fair value of plan assets, end of year	163,000	163,000	'
Balance, end of period	163,000	163,000	'
Asset target allocations [Abstract]	'	'	'
Weighted-average asset allocation (in hundredths)	0.10%	0.20%	'
Fair value of plan assets	163,000	163,000	'
Defined Benefit Plans [Member] \| Fixed Income Hedge Funds [Member] \| Level 1 [ Member]	'	'	'
Change in plan assets [ Roll Forward]	'	'	'
Fair value of plan assets, end of year	0	0	'
Balance, end of period	0	0	'
Asset target allocations [Abstract]	'	'	'
Fair value of plan assets	0	0	'
Defined Benefit Plans [Member] \| Fixed Income Hedge Funds [Member] \| Level 2 [Member]	'	'	'
Change in plan assets [ Roll Forward]	'	'	'
Fair value of plan assets, end of year	0	0	'
Balance, end of period	0	0	'
Asset target allocations [Abstract]	'	'	'
Fair value of plan assets	0	0	'
Defined Benefit Plans [Member] \| Fixed Income Hedge Funds [Member] \| Level 3 [Member]	'	'	'
Change in plan assets [ Roll Forward]	'	'	'
Fair value of plan assets, beginning of year	'	301,000	'
Fair value of plan assets, end of year	163,000	163,000	'
Change in fair value	'	-138,000	'
Balance, end of period	163,000	163,000	'
Asset target allocations [Abstract]	'	'	'
Fair value of plan assets	163,000	163,000	'
Defined Benefit Plans [Member] \| Cash and Cash Equivalents [Member]	'	'	'
Asset target allocations [Abstract]	'	'	'
Target asset allocation, minimum (in hundredths)	0.00%	'	'
Target asset allocation, maximum (in hundredths)	10.00%	'	'
Defined Benefit Plans [Member] \| Fixed Income Funds [Member]	'	'	'
Asset target allocations [Abstract]	'	'	'
Target asset allocation, minimum (in hundredths)	10.00%	'	'
Target asset allocation, maximum (in hundredths)	30.00%	'	'
Defined Benefit Plans [Member] \| Domestic Equity [Member]	'	'	'
Asset target allocations [Abstract]	'	'	'
Target asset allocation, minimum (in hundredths)	30.00%	'	'
Target asset allocation, maximum (in hundredths)	55.00%	'	'
Defined Benefit Plans [Member] \| International Equity [Member]	'	'	'
Asset target allocations [Abstract]	'	'	'
Target asset allocation, minimum (in hundredths)	10.00%	'	'
Target asset allocation, maximum (in hundredths)	30.00%	'	'
Defined Benefit Plans [Member] \| Other Investments [Member]	'	'	'
Asset target allocations [Abstract]	'	'	'
Target asset allocation, minimum (in hundredths)	0.00%	'	'
Target asset allocation, maximum (in hundredths)	20.00%	'	'
Supplemental Retirement Plans [Member]	'	'	'
Change in benefit obligation [Roll Forward]	'	'	'
Benefit obligation, beginning of year	56,619,000	52,646,000	'
Benefit obligation from business combination	1,658,000	0	'
Service cost	597,000	679,000	589,000
Interest cost	1,943,000	2,067,000	2,276,000
Actuarial loss	-4,187,000	3,368,000	'
Benefits paid	-4,141,000	-2,339,000	'
Prior service cost due to amendment	0	198,000	'
Benefit obligation, end of year	52,489,000	56,619,000	52,646,000
Change in plan assets [ Roll Forward]	'	'	'
Fair value of plan assets, beginning of year	0	0	'
Employer contributions	4,141,000	2,339,000	'
Benefit payments	-4,141,000	-2,339,000	'
Fair value of plan assets, end of year	0	0	0
Funded status at end of year - net liability	-52,489,000	-56,619,000	'
Balance, end of period	0	0	0
Amounts recognized in accumulated other comprehensive income (loss) [Abstract]	'	'	'
Net loss - amount recognized	14,509,000	19,733,000	'
Prior service cost	2,110,000	2,360,000	'
Amounts recognized	16,619,000	22,093,000	'
Net periodic benefit cost [Abstract]	'	'	'
Service cost	597,000	679,000	589,000
Interest cost	1,943,000	2,067,000	2,276,000
Amortization of prior service credits	250,000	250,000	236,000
Recognized net actuarial loss	1,038,000	861,000	495,000
Net periodic benefit cost	3,828,000	3,857,000	3,596,000
Other changes in plan assets and benefit obligation recognized in other comprehensive (loss), before taxes [Abstract]	'	'	'
Net (gain) loss	-5,224,000	2,507,000	5,336,000
Prior service cost	0	198,000	1,192,000
Amortization of prior service cost	-250,000	-250,000	-236,000
Total recognized in other comprehensive income (loss)	-5,474,000	2,455,000	6,292,000
Total recognized in net periodic benefit cost and other comprehensive income (loss)	-1,646,000	6,312,000	9,888,000
Weighted-average assumptions as of end of year [Abstract]	'	'	'
Discount rate for benefit obligation (in hundredths)	4.30%	3.50%	4.00%
Discount rate for net periodic benefit cost (in hundredths)	3.50%	4.00%	5.05%
Asset target allocations [Abstract]	'	'	'
Fair value of plan assets	0	0	0
Estimated future benefit payments [Abstract]	'	'	'
2014	2,735,000	'	'
2015	2,940,000	'	'
2016	3,186,000	'	'
2017	3,491,000	'	'
2018	3,592,000	'	'
2019 - 2023	19,004,000	'	'
Accumulated other comprehensive loss expected to be recognized during next fiscal year as components of net periodic benefit cost	'	659,000	'
Accumulated other comprehensive loss expected to be recognized during next fiscal year as prior service cost	'	250,000	'
BancTrust Pension Plan [Member]	'	'	'
Contributions [Abstract]	'	'	'
Expected minimum required contribution in next fiscal year	$0	$0	'

Stock_and_Incentive_Compensati2

Stock and Incentive Compensation Plans (Details) (USD $)	12 Months Ended
Stock and Incentive Compensation Plans (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Options [Roll Forward]	'	'	'
Outstanding, beginning of year (in shares)	699,600	1,205,100	1,311,925
Granted (in shares)	0	0	0
Exercised (in shares)	-187,300	-11,125	-69,525
Expired (in shares)	-406,850	-494,375	-36,000
Forfeited (in shares)	0	0	-1,300
Outstanding, end of year (in shares)	105,450	699,600	1,205,100
Exercisable, end of year (in shares)	105,450	699,600	1,205,100
Weighted average option price [Abstract]	'	'	'
Outstanding, beginning of year (in dollars per share)	$27.58	$27.31	$27.03
Granted (in dollars per share)	$0	$0	$0
Exercised (in dollars per share)	$26.96	$24.09	$21.68
Expired (in dollars per share)	$27.90	$27.01	$27.71
Forfeited (in dollars per share)	$0	$0	$31.55
Outstanding, end of year (in dollars per share)	$27.43	$27.58	$27.31
Exercisable, end of year (in dollars per share)	$27.43	$27.58	$27.31
Aggregate intrinsic value [Abstract]	'	'	'
Outstanding, end of year	$0	$0	$44,365
Exercisable, end of year	0	0	44,365
Compensation expense for all stock incentive plans [Abstract]	'	'	'
Recognized compensation expense	3,599,000	3,973,000	3,974,000
Unrecognized compensation expense	4,057,000	'	'
Options outstanding [Abstract]	'	'	'
Outstanding, end of period (in shares)	105,450	'	'
Weighted- Average Remaining Years To Expiration	'0 years 3 months 18 days	'	'
Weighted- Average Exercise Price (in dollars per share)	$27.43	'	'
Options exercisable [Abstract]	'	'	'
Exercisable, end of period (in shares)	105,450	'	'
Exercisable Weighted- Average Remaining Years To Expiration	'0 years 3 months 18 days	'	'
Exercisable Weighted- Average Exercise Price (in dollars per share)	$27.43	'	'
Price Range 25.88-29.11 [Member]	'	'	'
Options outstanding [Abstract]	'	'	'
Range of Exercise Prices, lower limit (in dollars per share)	$25.88	'	'
Range of Exercise Prices, upper limit (in dollars per share)	$29.11	'	'
Outstanding, end of period (in shares)	99,450	'	'
Weighted- Average Remaining Years To Expiration	'0 years 3 months 18 days	'	'
Weighted- Average Exercise Price (in dollars per share)	$27.31	'	'
Options exercisable [Abstract]	'	'	'
Exercisable, end of period (in shares)	99,450	'	'
Exercisable Weighted- Average Remaining Years To Expiration	'0 years 3 months 18 days	'	'
Exercisable Weighted- Average Exercise Price (in dollars per share)	$27.31	'	'
Price Range 29.11-32.35 [Member]	'	'	'
Options outstanding [Abstract]	'	'	'
Range of Exercise Prices, lower limit (in dollars per share)	$29.11	'	'
Range of Exercise Prices, upper limit (in dollars per share)	$32.35	'	'
Outstanding, end of period (in shares)	6,000	'	'
Weighted- Average Remaining Years To Expiration	'0 years 2 months 12 days	'	'
Weighted- Average Exercise Price (in dollars per share)	$29.38	'	'
Options exercisable [Abstract]	'	'	'
Exercisable, end of period (in shares)	6,000	'	'
Exercisable Weighted- Average Remaining Years To Expiration	'0 years 2 months 12 days	'	'
Exercisable Weighted- Average Exercise Price (in dollars per share)	$29.38	'	'
Performance Based Award [Member]	'	'	'
Shares [Roll Forward]	'	'	'
Nonvested shares, beginning of year (in shares)	159,583	179,421	210,797
Granted (in shares)	62,119	55,295	53,863
Released from restriction (in shares)	-54,784	-72,632	-84,338
Forfeited (in shares)	-6,398	-2,501	-901
Nonvested shares, end of year (in shares)	160,520	159,583	179,421
Weighted-average grant date fair value [Abstract]	'	'	'
Nonvested shares, beginning of year (in dollars per share)	$24.26	$20.30	$20.30
Granted (in dollars per share)	$23.65	$25.66	$25.40
Released from restriction (in dollars per share)	$24.15	$21.38	$20
Forfeited (in dollars per share)	$25.42	$24.70	$23.82
Nonvested shares, end of year (in dollars per share)	$25.20	$24.26	$20.30
Compensation expense for all stock incentive plans [Abstract]	'	'	'
Recognized compensation expense	825,000	868,000	855,000
Unrecognized compensation expense	955,000	'	'
Weighted average life of unrecognized compensation expense	'1 year 8 months 12 days	'	'
Time Vested Award [Member]	'	'	'
Shares [Roll Forward]	'	'	'
Nonvested shares, beginning of year (in shares)	317,573	334,356	343,469
Granted (in shares)	112,964	141,616	157,178
Released from restriction (in shares)	-122,727	-151,331	-160,447
Forfeited (in shares)	-16,176	-7,068	-5,844
Nonvested shares, end of year (in shares)	291,634	317,573	334,356
Weighted-average grant date fair value [Abstract]	'	'	'
Nonvested shares, beginning of year (in dollars per share)	$23.28	$21.04	$20.33
Granted (in dollars per share)	$24.47	$24.66	$24.15
Released from restriction (in dollars per share)	$24.40	$23.14	$20.46
Forfeited (in dollars per share)	$25.14	$24.14	$20.17
Nonvested shares, end of year (in dollars per share)	$24.48	$23.28	$21.04
Compensation expense for all stock incentive plans [Abstract]	'	'	'
Recognized compensation expense	2,774,000	3,105,000	2,835,000
Unrecognized compensation expense	3,102,000	'	'
Weighted average life of unrecognized compensation expense	'1 year 9 months 18 days	'	'
Restricted Stock [Member] \| Performance Based Award [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Vesting period	'3 years	'	'
Restricted Stock [Member] \| Performance Based Excess Time-Vested [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Vesting period	'3 years	'	'
Restricted Stock [Member] \| Time Vested Award [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Vesting period	'3 years	'	'
Restricted Stock Units (RSUs) [Member]	'	'	'
Weighted-average grant date fair value [Abstract]	'	'	'
ROATE Performance measure (in hundredths)	'	'	100.00%
TSR Performance measure (in hundredths)	'	'	100.00%
Fair value of stock (in dollars per share)	'	'	$23.65
Compensation expense for all stock incentive plans [Abstract]	'	'	'
Recognized compensation expense	0	0	184,000
Unrecognized compensation expense	0	'	'
Weighted average life of unrecognized compensation expense	'0 years	'	'
Stock option-based awards [Member]	'	'	'
Aggregate intrinsic value [Abstract]	'	'	'
Total intrinsic value of options exercised	191,000	16,000	144,000
Compensation expense for all stock incentive plans [Abstract]	'	'	'
Recognized compensation expense	0	0	100,000
Unrecognized compensation expense	$0	'	'
Weighted average life of unrecognized compensation expense	'0 years	'	'
2005 Stock and Incentive Compensation Plan [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Common stock available for issuance (in shares)	5,735,706	'	'
Stock and incentive compensation plan, contractual term	'7 years	'	'
Vesting period	'5 years	'	'
1997 Long Term Incentive Plan [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Stock and incentive compensation plan, contractual term	'10 years	'	'
Vesting period	'4 years	'	'

Commitments_and_Contingencies_1

Commitments and Contingencies (Details) (USD $)	12 Months Ended						12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2012	Dec. 31, 2013	Oct. 25, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
				Standby Letters of Credit [Member]	Standby Letters of Credit [Member]	Pending or Threatened Litigation, Stanford Financial Group [Member]	Pending or Threatened Litigation, Overdraft Fees [Member]	Pending or Threatened Litigation, Overdraft Fees [Member]	Pending or Threatened Litigation, Overdraft Fees [Member]	Commitments to Extend Credit [Member]	Commitments to Extend Credit [Member]
						Lawsuit			Lawsuit
Commitments for credit [Abstract]	'	'	'	'	'	'	'	'	'	'	'
Commitments to extend credit	'	'	'	'	'	'	'	'	'	$2,193,000,000	$1,909,000,000
Loss Contingencies [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Maximum potential exposure to credit loss in the event of nonperformance	'	'	'	143,200,000	140,500,000	'	'	'	'	'	'
Letters of Credit, Maturity Term - Maximum	'	'	'	'3 years	'	'	'	'	'	'	'
Collateral Held, Fair Value	'	'	'	35,900,000	'	'	'	'	'	'	'
Lease Commitments [Abstract]	'	'	'	'	'	'	'	'	'	'	'
Rental expense	8,400,000	7,400,000	7,500,000	'	'	'	'	'	'	'	'
Future minimum rental commtiments under noncancellable operating leases [Abstract]	'	'	'	'	'	'	'	'	'	'	'
2014	6,787,000	'	'	'	'	'	'	'	'	'	'
2015	5,503,000	'	'	'	'	'	'	'	'	'	'
2016	3,340,000	'	'	'	'	'	'	'	'	'	'
2017	2,914,000	'	'	'	'	'	'	'	'	'	'
2018	2,629,000	'	'	'	'	'	'	'	'	'	'
Thereafter	9,445,000	'	'	'	'	'	'	'	'	'	'
Total	30,618,000	'	'	'	'	'	'	'	'	'	'
Legal Proceedings [Abstract]	'	'	'	'	'	'	'	'	'	'	'
Lawsuits Naming Entity as Defendant, number	'	'	'	'	'	2	'	'	2	'	'
Settlement amount	'	'	'	'	'	'	4,000,000	'	'	'	'
Settlement amount, net of tax	'	'	'	'	'	'	2,500,000	'	'	'	'
Settlement amount deposited into Settlement Administrator escrow account	'	'	'	'	'	'	'	$4,000,000	'	'	'

Derivative_Financial_Instrumen2

Derivative Financial Instruments, Part 3 (Details) (Interest Rate Swap [Member], USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Interest Rate Swap [Member]	'	'
Offsetting Derivative Assets [Abstract]	'	'
Gross Amounts of Recognized Assets, Offsetting of Derivative Assets	$7,431	$5,241
Gross Amounts Offset in the Statement of Financial Position, Offsetting of Derivative Assets	0	0
Net Amounts of Assets presented in the Statement of Financial Position, Offsetting of Derivative Assets	7,431	5,241
Financial Instruments, Gross Amounts Not Offset in the Statement of Financial Position, Offsetting of Derivative Assets	-967	0
Cash Collateral Received, Gross Amounts Not Offset in the Statement of Financial Position, Offsetting of Derivative Assets	-1,920	0
Net Amount, Offsetting of Derivative Assets	4,544	5,241
Offsetting Derivative Liabilities [Abstract]	'	'
Gross Amounts of Recognized Liabilities, Offsetting of Derivative Liabilities	4,628	5,329
Gross Amounts Offset in the Statement of Financial Position, Offsetting of Derivative Liabilities	0	0
Net Amounts of Liabilities presented in the Statement of Financial Position, Offsetting of Derivative Liabilities	4,628	5,329
Financial Instruments, Gross Amounts Not Offset in the Statement of Financial Position, Offsetting of Derivative Liabilities	-967	0
Cash Collateral Posted, Gross Amounts Not Offset in the Statement of Financial Position, Offsetting of Derivative Liabilities	0	-594
Net Amount, Offsetting of Derivative Liabilities	$3,661	$4,735

Shareholders_Equity_Details

Shareholders' Equity (Details) (USD $)	12 Months Ended
Shareholders' Equity (Details) (USD $)	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Securities available for sale and transferred securities, Before tax amount: [Abstract]	'		'		'
Unrealized holding (losses) gains arising during the period, Before tax amount	($67,135,000)		$97,000		$39,636,000
Net unrealized holding loss on securities transferred to held to maturity, Before tax amount	-46,383,000		'		'
Reclassification adjustment for net gains realized in net income, Before tax amount	-485,000		-1,059,000		-80,000
Total securities available for sale and transferred securities, Before tax amount	-114,003,000		-962,000		39,556,000
Securities available for sale and transferred securities, Tax (expense) benefit: [Abstract]	'		'		'
Unrealized holding (losses) gains arising during period, Tax Effect	25,679,000		-37,000		-15,161,000
Net unrealized holding loss on securities transferred to held to maturity, Tax	17,741,000		'		'
Reclassification adjustment for net gains realized in net income, Tax	186,000		405,000		31,000
Total securities available for sale and transferred securities, Tax	43,606,000		368,000		-15,130,000
Securities available for sale and transferred securities, Net of tax amount: [Abstract]	'		'		'
Unrealized holding (losses) gains arising during the period, after tax income (expense)	-41,456,000		60,000		24,475,000
Net unrealized holding loss on securities transferred to held to maturity, after tax income (expense)	-28,642,000		0		0
Reclassification adjustment for net gains realized in net income, after tax income (expense)	-299,000		-654,000		-49,000
Total securities available for sale and transferred securities, after tax income (expense)	-70,397,000		-594,000		24,426,000
Pension and other postretirement benefit plans, Before tax amount: [Abstract]	'		'		'
Net change in prior service costs, before tax amount	251,000		52,000		-957,000
Recognized net loss due to Settlement, before tax amount	2,225,000		'		'
Recognized net actuarial loss (gain), before tax amount	32,742,000		1,354,000		-15,041,000
Total pension and other postretirement benefit plans, before tax amount	35,218,000		1,406,000		-15,998,000
Pension and other postretirement benefit plans, Tax (expense) benefit: [Abstract]	'		'		'
Net change in prior service costs, tax (expense) benefit	-96,000		-20,000		366,000
Recognized net loss due to settlement, tax (expense) benefit	-851,000		'		'
Recognized net actuarial loss (gain), tax (expense) benefit	-12,524,000		-518,000		5,753,000
Total pension and other postretirement benefit plans, tax (expense) benefit	-13,471,000		-538,000		6,119,000
Pension and other postretirement benefit plans, Net of tax amount: [Abstract]	'		'		'
Net change in prior service costs, after tax income (expense)	155,000		32,000		-591,000
Recognized net loss due to settlement after tax income (expense)	1,374,000		'		'
Recognized net actuarial loss (gain), after tax income (expense)	20,218,000		836,000		-9,288,000
Total pension and other postretirement benefit plans, after tax income (expense)	21,747,000		868,000		-9,879,000
Derivatives, Before tax amount: [Abstract]	'		'		'
Change in accumulated gain on effective cash flow hedge derivatives, before tax amount	2,468,000		'		'
Derivatives, Tax (expense) benefit: [Abstract]	'		'		'
Change in accumulated gain on effective cash flow hedge derivatives, tax (expense) benefit	-944,000		'		'
Derivatives, Net of tax amount: [Abstract]	'		'		'
Change in the accumulated gain on effective cash flow hedge derivatives, after tax amount	1,524,000		0		0
Total other comprehensive income (loss), Before tax amount	-76,317,000		444,000		23,558,000
Total other comprehensive income (loss), Tax expense (benefit)	29,191,000		-170,000		-9,011,000
Total other comprehensive income (loss), Net of tax	-47,126,000		274,000		14,547,000
Accumulated Other Comprehensive Income (Loss) [Line Items]	'		'		'
Opening balance	3,395,000		3,121,000		-11,426,000
Other comprehensive income before reclassification	-46,827,000		928,000		14,596,000
Amounts reclassified from accumulated other comprehensive income	-299,000		-654,000		-49,000
Net other comprehensive (loss) income	-47,126,000		274,000		14,547,000
Ending balance	-43,731,000		3,395,000		3,121,000
Securities Available for Sale and Transferred Securities [Member]	'		'		'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'		'		'
Opening balance	44,935,000		45,529,000		21,103,000
Other comprehensive income before reclassification	-70,098,000		60,000		24,475,000
Amounts reclassified from accumulated other comprehensive income	-299,000		-654,000		-49,000
Net other comprehensive (loss) income	-70,397,000		-594,000		24,426,000
Ending balance	-25,462,000		44,935,000		45,529,000
Defined Benefit Pension Items [Member]	'		'		'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'		'		'
Opening balance	-41,540,000		-42,408,000		-32,529,000
Other comprehensive income before reclassification	21,747,000		868,000		-9,879,000
Amounts reclassified from accumulated other comprehensive income	0		0		0
Net other comprehensive (loss) income	21,747,000		868,000		-9,879,000
Ending balance	-19,793,000		-41,540,000		-42,408,000
Gains on Cash Flow Hedge [Member]	'		'		'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'		'		'
Opening balance	0		0		0
Other comprehensive income before reclassification	1,524,000		0		0
Amounts reclassified from accumulated other comprehensive income	0		0		0
Net other comprehensive (loss) income	1,524,000		0		0
Ending balance	1,524,000		0		0
Common Shares [Member]	'		'		'
Dividends on common stock [Abstract]	'		'		'
Dividend potential for next fiscal year	99,400,000		'		'
Period for which retained net income considered for approval	'2 years		'		'
Trustmark Corporation [Member] \| Total Capital (to Risk Weighted Assets) [Member]	'		'		'
Total Capital (to Risk Weighted Assets) [Abstract]	'		'		'
Actual Regulatory Capital Amount	1,122,904,000		1,157,838,000		'
Actual Regulatory Capital Ratio (in hundredths)	14.18%		17.22%		'
Minimum Regulatory Capital Required Amount	633,310,000		537,861,000		'
Minimum Regulatory Capital Required Ratio (in hundredths)	8.00%		8.00%		'
Minimum Regulatory Provision to be Well-Capitalized Amount	'	[1]	'	[1]	'
Minimum Regulatory Provision to be Well-Capitalized Ratio (in hundredths)	'	[1]	'	[1]	'
Trustmark Corporation [Member] \| Tier 1 Capital (to Risk Weighted Assets) [Member]	'		'		'
Tier 1 Capital (to Risk Weighted Assets) [Abstract]	'		'		'
Actual Regulatory Capital Amount	1,026,858,000		1,043,865,000		'
Actual Regulatory Capital Ratio (in hundredths)	12.97%		15.53%		'
Minimum Regulatory Capital Required Amount	316,655,000		268,930,000		'
Minimum Regulatory Capital Required Ratio (in hundredths)	4.00%		4.00%		'
Minimum Regulatory Provision to be Well-Capitalized Amount	'	[1]	'	[1]	'
Minimum Regulatory Provision to be Well-Capitalized Ratio (in hundredths)	'	[1]	'	[1]	'
Trustmark Corporation [Member] \| Tier 1 Capital (to Average Assets) [Member]	'		'		'
Tier 1 Capital (to Average Assets) [Abstract]	'		'		'
Actual Regulatory Capital Amount	1,026,858,000		1,043,865,000		'
Actual Regulatory Capital Ratio (in hundredths)	9.06%		10.97%		'
Minimum Regulatory Capital Required Amount	340,115,000		285,556,000		'
Minimum Regulatory Capital Required Ratio (in hundredths)	3.00%		3.00%		'
Minimum Regulatory Provision to be Well-Capitalized Amount	'	[1]	'	[1]	'
Minimum Regulatory Provision to be Well-Capitalized Ratio (in hundredths)	'	[1]	'	[1]	'
Trustmark National Bank [Member] \| Total Capital (to Risk Weighted Assets) [Member]	'		'		'
Total Capital (to Risk Weighted Assets) [Abstract]	'		'		'
Actual Regulatory Capital Amount	1,076,391,000		1,119,438,000		'
Actual Regulatory Capital Ratio (in hundredths)	13.74%		16.85%		'
Minimum Regulatory Capital Required Amount	626,672,000		531,577,000		'
Minimum Regulatory Capital Required Ratio (in hundredths)	8.00%		8.00%		'
Minimum Regulatory Provision to be Well-Capitalized Amount	783,340,000		664,472,000		'
Minimum Regulatory Provision to be Well-Capitalized Ratio (in hundredths)	10.00%		10.00%		'
Trustmark National Bank [Member] \| Tier 1 Capital (to Risk Weighted Assets) [Member]	'		'		'
Tier 1 Capital (to Risk Weighted Assets) [Abstract]	'		'		'
Actual Regulatory Capital Amount	982,925,000		1,007,775,000		'
Actual Regulatory Capital Ratio (in hundredths)	12.55%		15.17%		'
Minimum Regulatory Capital Required Amount	313,336,000		265,789,000		'
Minimum Regulatory Capital Required Ratio (in hundredths)	4.00%		4.00%		'
Minimum Regulatory Provision to be Well-Capitalized Amount	470,004,000		398,683,000		'
Minimum Regulatory Provision to be Well-Capitalized Ratio (in hundredths)	6.00%		6.00%		'
Trustmark National Bank [Member] \| Tier 1 Capital (to Average Assets) [Member]	'		'		'
Tier 1 Capital (to Average Assets) [Abstract]	'		'		'
Actual Regulatory Capital Amount	982,925,000		1,007,775,000		'
Actual Regulatory Capital Ratio (in hundredths)	8.76%		10.72%		'
Minimum Regulatory Capital Required Amount	336,499,000		281,984,000		'
Minimum Regulatory Capital Required Ratio (in hundredths)	3.00%		3.00%		'
Minimum Regulatory Provision to be Well-Capitalized Amount	$560,831,000		$469,974,000		'
Minimum Regulatory Provision to be Well-Capitalized Ratio (in hundredths)	5.00%		5.00%		'

[1]	n/a

Fair_Value_Part_1_Details

Fair Value Part 1 (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Securities available for sale	$2,194,154	$2,657,745	'
Loans held for sale	149,169	257,986	'
Mortgage servicing rights	67,834	47,341	43,274
Fair Value, Measurements, Recurring [Member]	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
U.S. Treasury securities	502	'	'
U.S. Government agency obligations	169,472	105,745	'
Obligations of states and political subdivisions	171,738	215,761	'
Mortgage-backed securities	1,788,505	2,094,612	'
Asset-backed securities	63,937	241,627	'
Securities available for sale	2,194,154	2,657,745	'
Loans held for sale	149,169	257,986	'
Mortgage servicing rights	67,834	47,341	'
Other assets - derivatives	4,994	7,107	'
Other liabilities - derivatives	3,298	6,612	'
Fair Value, Inputs, Level 1 [Member] \| Fair Value, Measurements, Recurring [Member]	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
U.S. Treasury securities	0	'	'
U.S. Government agency obligations	0	0	'
Obligations of states and political subdivisions	0	0	'
Mortgage-backed securities	0	0	'
Asset-backed securities	0	0	'
Securities available for sale	0	0	'
Loans held for sale	0	0	'
Mortgage servicing rights	0	0	'
Other assets - derivatives	-2,579	-440	'
Other liabilities - derivatives	581	545	'
Fair Value, Inputs, Level 2 [Member] \| Fair Value, Measurements, Recurring [Member]	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
U.S. Treasury securities	502	'	'
U.S. Government agency obligations	169,472	105,745	'
Obligations of states and political subdivisions	171,738	215,761	'
Mortgage-backed securities	1,788,505	2,094,612	'
Asset-backed securities	63,937	241,627	'
Securities available for sale	2,194,154	2,657,745	'
Loans held for sale	149,169	257,986	'
Mortgage servicing rights	0	0	'
Other assets - derivatives	7,447	5,263	'
Other liabilities - derivatives	2,717	6,067	'
Fair Value, Inputs, Level 3 [Member] \| Fair Value, Measurements, Recurring [Member]	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
U.S. Treasury securities	0	'	'
U.S. Government agency obligations	0	0	'
Obligations of states and political subdivisions	0	0	'
Mortgage-backed securities	0	0	'
Asset-backed securities	0	0	'
Securities available for sale	0	0	'
Loans held for sale	0	0	'
Mortgage servicing rights	67,834	47,341	'
Other assets - derivatives	126	2,284	'
Other liabilities - derivatives	$0	$0	'

Fair_Value_Part_2_Details

Fair Value Part 2 (Details) (Recurring Basis[Member], Level 3 [Member], USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
Other Assets - Derivatives [Member]	'		'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'		'
Beginning Balance	$2,284		$702
Total net (losses) gains included in net income	7,754	[1]	13,441	[1]
Additions	0		0
Sales	-9,912		-11,859
Ending Balance	126		2,284
The amount of total (losses) gains for the period included in earnings that are attributable to the change in unrealized gains or losses still held, end of period	735		2,317
MSR [Member]	'		'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'		'
Beginning Balance	47,341		43,274
Total net (losses) gains included in net income	2,012	[1]	-19,186	[1]
Additions	18,481		23,253
Sales	0		0
Ending Balance	67,834		47,341
The amount of total (losses) gains for the period included in earnings that are attributable to the change in unrealized gains or losses still held, end of period	$11,818		($9,378)

[1]	Total net (losses) gains included in Mortgage banking, net relating to MSR includes changes in fair value due to market changes and due to runoff.

Fair_Value_Part_3_Details

Fair Value Part 3 (Details) (USD $)	12 Months Ended
Fair Value Part 3 (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'	'
Securities held to maturity	$1,168,728,000	$42,188,000	'	'
Net LHFI	5,732,433,000	5,514,016,000	'	'
FDIC indemnification asset	14,347,000	21,774,000	28,348,000	0
Deposits	9,859,902,000	7,896,517,000	'	'
Long-term FHLB advances	8,458,000	0	'	'
Subordinated notes	49,904,000	49,871,000	'	'
Junior subordinated debt securities	61,856,000	61,856,000	'	'
Nonfinancial Assets and Liabilities [Abstract]	'	'	'	'
Outstanding balances in impaired loans	31,600,000	40,600,000	'	'
Foreclosed assets measured at fair value	80,300,000	38,900,000	'	'
Allowance for possible loan losses, Charge-offs	11,400,000	9,000,000	'	'
Foreclosed assets re-measured after initial recognition	47,400,000	38,000,000	'	'
Write-downs Of Allowance For Foreclosed Assets After Initial Recognition	5,700,000	6,600,000	'	'
Estimated fair value of financial instruments with immediate and shorter-term maturities maximum	'90 days	'	'	'
Bay Bank and Trust Company [Member]	'	'	'	'
Nonfinancial Assets and Liabilities [Abstract]	'	'	'	'
Foreclosed assets measured at fair value	2,600,000	'	'	'
BancTrust Financial Group, Inc. [Member]	'	'	'	'
Nonfinancial Assets and Liabilities [Abstract]	'	'	'	'
Foreclosed assets measured at fair value	40,100,000	'	'	'
Level 2 [Member] \| Carrying Value [Member]	'	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'	'
Cash and short-term investments	353,014,000	238,535,000	'	'
Securities held to maturity	1,168,728,000	42,188,000	'	'
Deposits	9,859,902,000	7,896,517,000	'	'
Short-term liabilities	317,972,000	375,749,000	'	'
Long-term FHLB advances	8,458,000	0	'	'
Subordinated notes	49,904,000	49,871,000	'	'
Junior subordinated debt securities	61,856,000	61,856,000	'	'
Level 2 [Member] \| Estimate of Fair Value [Member]	'	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'	'
Cash and short-term investments	353,014,000	238,535,000	'	'
Securities held to maturity	1,150,833,000	46,888,000	'	'
Deposits	9,866,118,000	7,904,179,000	'	'
Short-term liabilities	317,972,000	375,749,000	'	'
Long-term FHLB advances	8,474,000	0	'	'
Subordinated notes	53,387,000	53,980,000	'	'
Junior subordinated debt securities	40,206,000	40,206,000	'	'
Level 3 [Member] \| Carrying Value [Member]	'	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'	'
Net LHFI	5,732,433,000	5,514,016,000	'	'
Net acquired loans	794,570,000	127,489,000	'	'
FDIC indemnification asset	14,347,000	21,774,000	'	'
Level 3 [Member] \| Estimate of Fair Value [Member]	'	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'	'
Net LHFI	5,787,408,000	5,619,933,000	'	'
Net acquired loans	794,570,000	127,489,000	'	'
FDIC indemnification asset	$14,347,000	$21,774,000	'	'

Derivative_Financial_Instrumen3

Derivative Financial Instruments Part 1 (Details) (USD $)	12 Months Ended
Derivative Financial Instruments Part 1 (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Designated as Hedging Instrument [Member]	'	'
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]	'	'
Accumulated net, after tax gain included in other comprehensive loss	$1,524,000	$0
Designated as Hedging Instrument [Member] \| Forward Contracts [Member]	'	'
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]	'	'
Off-balance sheet obligations	155,800,000	310,300,000
Valuation adjustment	1,900,000	-738,000
Designated as Hedging Instrument [Member] \| Interest Rate Swap [Member]	'	'
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]	'	'
Notional amount of mirror-image derivative contracts	60,000,000	'
Derivative inception date	31-Dec-14	'
Derivative maturity date	31-Dec-19	'
Description of variable rate basis for derivative	'three-month LIBOR	'
Swap fixed interest rate to be paid (in hundredths)	1.66%	'
Period for which cash flow hedges will be used to hedge quarterly interest payments	'5 years	'
Period before derivative becomes effective	'12 months	'
Estimated amount to be reclassified as an increase to interest expense	2,000	'
Accumulated net, after tax gain included in other comprehensive loss	1,524,000	'
Derivatives not Designated as Hedging Instruments [Member]	'	'
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]	'	'
Net negative ineffectiveness on MSR fair value	'	3,400,000
Net positive ineffectiveness on MSR fair value	3,700,000	'
Aggregate notional amount of credit risk participation agreements	19,700,000	10,100,000
Number of risk participation agreements	3	2
Derivatives not Designated as Hedging Instruments [Member] \| Interest Rate Lock Commitments Member]	'	'
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]	'	'
Off-balance sheet obligations	58,500,000	186,900,000
Positive valuation adjustment	126,000	2,300,000
Derivatives not Designated as Hedging Instruments [Member] \| Interest Rate Swap [Member]	'	'
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]	'	'
Notional amount of mirror-image derivative contracts	355,900,000	321,300,000
Termination value of derivatives	508,000	5,400,000
Market value of posted collateral	$1,200,000	'

Derivative_Financial_Instrumen4

Derivative Financial Instruments Part 2 (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Interest Rate Swap [Member]	'	'	'
Derivatives, Fair Value [Line Items]	'	'	'
Fair value of derivative asset	$7,431	$5,241	'
Fair value of derivative liability	4,628	5,329	'
Derivatives in Hedging Relationships [Member]	'	'	'
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net [Abstract]	'	'	'
Amount of (loss) gain recognized in other comprehensive (loss) income	1,524	0	'
Derivatives in Hedging Relationships [Member] \| Mortgage Banking, Net [Member]	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Amount of gain (loss) recognized	2,649	1,479	-5,360
Derivatives in Hedging Relationships [Member] \| Interest Rate Swap [Member] \| Other Assets [Member]	'	'	'
Derivatives, Fair Value [Line Items]	'	'	'
Fair value of derivative liability	2,469	0	'
Derivatives in Hedging Relationships [Member] \| Forward Contracts [Member] \| Other Liabilities [Member]	'	'	'
Derivatives, Fair Value [Line Items]	'	'	'
Fair value of derivative liability	-1,911	738	'
Derivatives not Designated as Hedging Instruments [Member] \| Mortgage Banking, Net [Member]	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Amount of gain (loss) recognized	-10,459	7,585	19,929
Derivatives not Designated as Hedging Instruments [Member] \| Bankcard and Other Fees [Member]	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Amount of gain (loss) recognized	290	-82	-79
Derivatives not Designated as Hedging Instruments [Member] \| Interest Rate Swap [Member] \| Other Assets [Member]	'	'	'
Derivatives, Fair Value [Line Items]	'	'	'
Fair value of derivative asset	4,962	5,241	'
Derivatives not Designated as Hedging Instruments [Member] \| Interest Rate Swap [Member] \| Other Liabilities [Member]	'	'	'
Derivatives, Fair Value [Line Items]	'	'	'
Fair value of derivative asset	4,628	5,329	'
Derivatives not Designated as Hedging Instruments [Member] \| Future Contracts [Member] \| Other Assets [Member]	'	'	'
Derivatives, Fair Value [Line Items]	'	'	'
Fair value of derivative asset	-2,662	-482	'
Derivatives not Designated as Hedging Instruments [Member] \| Exchange Traded Purchased Options [Member] \| Other Assets [Member]	'	'	'
Derivatives, Fair Value [Line Items]	'	'	'
Fair value of derivative asset	83	42	'
Derivatives not Designated as Hedging Instruments [Member] \| OTC Written Options (Rate Locks) [Member] \| Other Assets [Member]	'	'	'
Derivatives, Fair Value [Line Items]	'	'	'
Fair value of derivative asset	126	2,284	'
Derivatives not Designated as Hedging Instruments [Member] \| Credit Risk Participation Agreement [Member] \| Other Assets [Member]	'	'	'
Derivatives, Fair Value [Line Items]	'	'	'
Fair value of derivative asset	16	22	'
Derivatives not Designated as Hedging Instruments [Member] \| Exchange Traded Written Options [Member] \| Other Liabilities [Member]	'	'	'
Derivatives, Fair Value [Line Items]	'	'	'
Fair value of derivative asset	$581	$545	'

Derivative_Financial_Instrumen5

Derivative Financial Instruments, Offsetting Derivative Assets and Liabilities (Details) (Interest Rate Swap [Member], USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Interest Rate Swap [Member]	'	'
Offsetting Derivative Assets [Abstract]	'	'
Gross Amounts of Recognized Assets, Offsetting of Derivative Assets	$7,431	$5,241
Gross Amounts Offset in the Statement of Financial Position, Offsetting of Derivative Assets	0	0
Net Amounts of Assets presented in the Statement of Financial Position, Offsetting of Derivative Assets	7,431	5,241
Financial Instruments, Gross Amounts Not Offset in the Statement of Financial Position, Offsetting of Derivative Assets	-967	0
Cash Collateral Received, Gross Amounts Not Offset in the Statement of Financial Position, Offsetting of Derivative Assets	-1,920	0
Net Amount, Offsetting of Derivative Assets	4,544	5,241
Offsetting Derivative Liabilities [Abstract]	'	'
Gross Amounts of Recognized Liabilities, Offsetting of Derivative Liabilities	4,628	5,329
Gross Amounts Offset in the Statement of Financial Position, Offsetting of Derivative Liabilities	0	0
Net Amounts of Liabilities presented in the Statement of Financial Position, Offsetting of Derivative Liabilities	4,628	5,329
Financial Instruments, Gross Amounts Not Offset in the Statement of Financial Position, Offsetting of Derivative Liabilities	-967	0
Cash Collateral Posted, Gross Amounts Not Offset in the Statement of Financial Position, Offsetting of Derivative Liabilities	0	-594
Net Amount, Offsetting of Derivative Liabilities	$3,661	$4,735

Segment_Information_Details

Segment Information (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
	Segment	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting Information [Line Items]	'	'	'
Number of segments in which the business operates	3	'	'
Net interest income	$388,487,000	$340,990,000	$348,943,000
Provision for loan losses, net	-7,382,000	12,294,000	30,328,000
Noninterest income	173,859,000	175,189,000	159,854,000
Noninterest expense	415,731,000	344,502,000	329,850,000
Income Before Income Taxes	153,997,000	159,383,000	148,619,000
Income taxes	36,937,000	42,100,000	41,778,000
Net Income	117,060,000	117,283,000	106,841,000
Selected Financial Information [Abstract]	'	'	'
Average assets	11,530,969,000	9,803,051,000	9,583,443,000
Depreciation and amortization	37,153,000	29,275,000	25,273,000
General Banking [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Net interest income	383,851,000	336,362,000	344,415,000
Provision for loan losses, net	-7,419,000	12,188,000	30,185,000
Noninterest income	113,436,000	122,421,000	109,601,000
Noninterest expense	364,940,000	300,097,000	284,849,000
Income Before Income Taxes	139,766,000	146,498,000	138,982,000
Income taxes	31,924,000	37,523,000	38,414,000
Net Income	107,842,000	108,975,000	100,568,000
Selected Financial Information [Abstract]	'	'	'
Average assets	11,393,972,000	9,658,924,000	9,436,557,000
Depreciation and amortization	35,961,000	27,876,000	23,640,000
Wealth Management [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Net interest income	4,317,000	4,327,000	4,256,000
Provision for loan losses, net	37,000	106,000	143,000
Noninterest income	29,581,000	24,565,000	23,300,000
Noninterest expense	26,804,000	23,053,000	23,300,000
Income Before Income Taxes	7,057,000	5,733,000	4,113,000
Income taxes	2,329,000	1,910,000	1,303,000
Net Income	4,728,000	3,823,000	2,810,000
Selected Financial Information [Abstract]	'	'	'
Average assets	70,121,000	78,567,000	81,472,000
Depreciation and amortization	167,000	174,000	209,000
Insurance [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Net interest income	319,000	301,000	272,000
Noninterest income	30,842,000	28,203,000	26,953,000
Noninterest expense	23,987,000	21,352,000	21,701,000
Income Before Income Taxes	7,174,000	7,152,000	5,524,000
Income taxes	2,684,000	2,667,000	2,061,000
Net Income	4,490,000	4,485,000	3,463,000
Selected Financial Information [Abstract]	'	'	'
Average assets	66,876,000	65,560,000	65,414,000
Depreciation and amortization	$1,025,000	$1,225,000	$1,424,000

Parent_Company_Only_Financial_2

Parent Company Only Financial Information (Details) (USD $)	12 Months Ended
Parent Company Only Financial Information (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Assets [Abstract]	'	'	'	'
Other assets	$582,363,000	$374,412,000	'	'
Total Assets	11,790,383,000	9,828,667,000	'	'
Liabilities and Shareholders' Equity [Abstract]	'	'	'	'
Junior subordinated debt securities	61,856,000	61,856,000	'	'
Shareholders' equity	1,354,953,000	1,287,369,000	1,215,037,000	1,149,484,000
Total Liabilities and Shareholders' Equity	11,790,383,000	9,828,667,000	'	'
Expense [Abstract]	'	'	'	'
Net Income	117,060,000	117,283,000	106,841,000	'
Operating Activities [Abstract]	'	'	'	'
Net income	117,060,000	117,283,000	106,841,000	'
Adjustments to reconcile net income to net cash provided by operating activities [Abstract]	'	'	'	'
Other	7,523,000	22,497,000	30,713,000	'
Net cash provided by operating activities	155,417,000	92,125,000	173,589,000	'
Investing Activities: [Abstract]	'	'	'	'
Net cash (used in) provided by investing activities	-113,201,000	193,891,000	95,284,000	'
Financing Activities [Abstract]	'	'	'	'
Cash dividends paid on common stock	-62,276,000	-59,961,000	-59,485,000	'
Net cash provided by (used in) financing activities	72,056,000	-257,152,000	-227,792,000	'
Increase in cash and cash equivalents	114,272,000	28,864,000	41,081,000	'
Cash and cash equivalents at beginning of year	231,489,000	202,625,000	161,544,000	'
Cash and cash equivalents at end of year	345,761,000	231,489,000	202,625,000	'
Income taxes paid	14,520,000	57,834,000	37,604,000	'
Interest paid	25,715,000	31,496,000	44,060,000	'
Trustmark Corp (Parent Company Only) [Member]	'	'	'	'
Assets [Abstract]	'	'	'	'
Investment in banks	1,394,250,000	1,330,452,000	'	'
Other assets	25,314,000	19,608,000	'	'
Total Assets	1,419,564,000	1,350,060,000	'	'
Liabilities and Shareholders' Equity [Abstract]	'	'	'	'
Accrued expense	2,755,000	835,000	'	'
Junior subordinated debt securities	61,856,000	61,856,000	'	'
Shareholders' equity	1,354,953,000	1,287,369,000	'	'
Total Liabilities and Shareholders' Equity	1,419,564,000	1,350,060,000	'	'
Revenue [Abstract]	'	'	'	'
Dividends received from banks	64,155,000	72,216,000	61,138,000	'
Earnings of subsidiaries over distributions	54,195,000	46,220,000	46,818,000	'
Other income	64,000	59,000	54,000	'
Total Revenue	118,414,000	118,495,000	108,010,000	'
Expense [Abstract]	'	'	'	'
Other expense	1,354,000	1,212,000	1,169,000	'
Total Expense	1,354,000	1,212,000	1,169,000	'
Net Income	117,060,000	117,283,000	106,841,000	'
Operating Activities [Abstract]	'	'	'	'
Net income	117,060,000	117,283,000	106,841,000	'
Adjustments to reconcile net income to net cash provided by operating activities [Abstract]	'	'	'	'
Increase in investment in subsidiaries	-54,195,000	-46,220,000	-46,818,000	'
Other	962,000	-376,000	268,000	'
Net cash provided by operating activities	63,827,000	70,687,000	60,291,000	'
Investing Activities: [Abstract]	'	'	'	'
Payment for investments in subsidiaries	-73,263,000	-10,003,000	0	'
Repayment for investments in subsidiaries	106,000,000	0	0	'
Net cash (used in) provided by investing activities	32,737,000	-10,003,000	0	'
Financing Activities [Abstract]	'	'	'	'
Repayments of advances from subsidiaries	-33,000,000	0	0	'
Cash dividends paid on common stock	-62,276,000	-59,961,000	-59,485,000	'
Other common stock transactions, net	2,832,000	-1,237,000	-141,000	'
Net cash provided by (used in) financing activities	-92,444,000	-61,198,000	-59,626,000	'
Increase in cash and cash equivalents	4,120,000	-514,000	665,000	'
Cash and cash equivalents at beginning of year	17,656,000	18,170,000	17,505,000	'
Cash and cash equivalents at end of year	21,776,000	17,656,000	18,170,000	'
Income taxes paid	14,500,000	57,800,000	37,600,000	'
Interest paid	$0	$0	$0	'