First Citizens BancShares (FCNCO) 10-K 26 Feb 14 2013 FY Annual report Financial data

Document_And_Entity_Informatio

Document And Entity Information (USD $)	12 Months Ended
	Dec. 31, 2013	Jun. 28, 2013	Feb. 26, 2014	Feb. 26, 2014
			Class A Common Stock	Class B Common Stock
Entity Registrant Name	'FIRST CITIZENS BANCSHARES INC /DE/	'	'	'
Entity Central Index Key	'0000798941	'	'	'
Current Fiscal Year End Date	'--12-31	'	'	'
Entity Filer Category	'Large Accelerated Filer	'	'	'
Document Type	'10-K	'	'	'
Document Period End Date	31-Dec-13	'	'	'
Document Fiscal Year Focus	'2013	'	'	'
Document Fiscal Period Focus	'FY	'	'	'
Amendment Flag	'false	'	'	'
Entity Common Stock, Shares Outstanding	'	'	8,586,058	1,032,883
Entity Well-known Seasoned Issuer	'Yes	'	'	'
Entity Voluntary Filers	'No	'	'	'
Entity Current Reporting Status	'Yes	'	'	'
Entity Public Float	'	$1,199,498,891	'	'

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Assets	'	'
Cash and due from banks	$533,599	$639,730
Overnight investments	859,324	443,180
Investment securities available for sale	5,387,703	5,226,228
Investment securities held to maturity	907	1,342
Loans held for sale	47,271	86,333
Loans and leases:	'	'
Acquired	1,029,426	1,809,235
Originated	12,104,298	11,576,115
Less allowance for loan and lease losses	233,394	319,018
Net loans and leases	12,900,330	13,066,332
Premises and equipment	876,522	882,768
Other real estate owned:	'	'
Covered under loss share agreements in other real estate owned	47,081	102,577
Real Estate Acquired Through Foreclosure	36,898	43,513
Income earned not collected	48,390	47,666
Receivable from FDIC for loss share agreements	93,397	270,192
Goodwill	102,625	102,625
Other intangible assets	1,247	3,556
Other assets	263,797	367,610
Total assets	21,199,091	21,283,652
Liabilities	'	'
Noninterest-bearing	5,241,817	4,885,700
Interest-bearing	12,632,249	13,200,325
Total deposits	17,874,066	18,086,025
Debt, Current	511,418	568,505
Long-term obligations	510,769	444,921
Payable to FDIC for loss share agreements	109,378	101,641
Other liabilities	116,785	218,553
Total liabilities	19,122,416	19,419,645
Shareholders' Equity	'	'
Surplus	143,766	143,766
Retained earnings	1,948,558	1,792,726
Accumulated other comprehensive loss	-25,268	-82,106
Total shareholders' equity	2,076,675	1,864,007
Total liabilities and shareholders' equity	21,199,091	21,283,652
Class A Common Stock	'	'
Shareholders' Equity	'	'
Common stock	8,586	8,588
Class B Common Stock	'	'
Shareholders' Equity	'	'
Common stock	$1,033	$1,033

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Class A Common Stock	'	'
Common stock, par value (in dollars per share)	$1	$1
Common stock, shared authorized	11,000,000	11,000,000
Common stock, shares issued	8,586,058	8,588,031
Common stock, shares outstanding	8,586,058	8,588,031
Class B Common Stock	'	'
Common stock, par value (in dollars per share)	$1	$1
Common stock, shared authorized	2,000,000	2,000,000
Common stock, shares issued	1,032,883	1,032,883
Common stock, shares outstanding	1,032,883	1,032,883

Consolidated_Statements_of_Inc

Consolidated Statements of Income (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Interest income	'	'	'
Loans and leases	$757,197	$967,601	$967,737
Investment securities:	'	'	'
U. S. Treasury	1,645	2,471	8,248
Government agency	12,265	15,688	19,848
Residential mortgage-backed securities	22,642	14,388	9,235
Corporate bonds	0	2,574	7,975
State, county and municipal	12	36	174
Other	320	340	548
Total investment securities interest and dividend income	36,884	35,497	46,028
Overnight investments	2,723	1,738	1,394
Total interest income	796,804	1,004,836	1,015,159
Interest expense	'	'	'
Deposits	34,495	57,568	101,888
Short-term borrowings	2,724	5,107	5,993
Long-term obligations	19,399	27,473	36,311
Total interest expense	56,618	90,148	144,192
Net interest income (loss)	740,186	914,688	870,967
Provision for loan and lease losses	-32,255	142,885	232,277
Net interest income after provision for loan and lease losses	772,441	771,803	638,690
Noninterest income	'	'	'
Gains on acquisitions	0	0	150,417
Cardholder and merchant services	48,360	45,174	56,279
Merchant Discount Fees	56,024	50,298	54,543
Service charges on deposit accounts	60,661	61,564	63,775
Wealth management services	59,628	57,236	54,974
Fees from processing services	22,821	34,816	30,487
Securities gains (losses)	0	2,277	-288
Other service charges and fees	15,696	14,239	22,647
Mortgage income	11,065	8,072	6,597
Insurance commissions	10,694	9,974	9,165
ATM income	5,026	5,279	6,020
Adjustments for FDIC receivable for loss share agreements	-72,342	-101,594	-19,305
Other	45,970	1,965	29,055
Total noninterest income	263,603	189,300	464,366
Noninterest expense	'	'	'
Salaries and wages	308,941	307,331	308,088
Employee benefits	90,479	78,861	72,526
Occupancy expense	75,718	74,798	74,832
Equipment expense	75,545	74,822	69,951
FDIC insurance expense	10,175	10,656	16,459
Foreclosure-related expenses	17,134	40,654	46,133
Other	193,388	179,811	204,936
Total noninterest expense	771,380	766,933	792,925
Income before income taxes	264,664	194,170	310,131
Income taxes	96,965	59,822	115,103
Income taxes	49,076	95,087	131,740
Net income	$167,699	$134,348	$195,028
Average shares outstanding (in shares)	9,618,952	10,244,472	10,376,445
Cash dividends (in dollars per share)	$1.20	$1.20	$1.20
Net income per share	$17.43	$13.11	$18.80

Consolidated_Statement_of_Comp

Consolidated Statement of Comprehensive Income (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Statement of Comprehensive Income [Abstract]	'	'	'
Net income	$167,699	$134,348	$195,028
Unrealized gains and losses on securities:	'	'	'
Change in unrealized securities gains (losses) arising during period	-50,441	9,566	3,108
Deferred tax benefit (expense)	19,833	-3,759	-1,148
Reclassification adjustment for losses (gains) included in income before income taxes	0	-2,322	262
Deferred tax expense (benefit)	0	917	-159
Total change in unrealized gains (losses) on securities, net of tax	-30,608	4,402	2,063
Change in fair value of cash flow hedges:	'	'	'
Change in unrecognized loss on cash flow hedges	-103	-2,779	-8,329
Deferred tax benefit	43	1,097	3,289
Reclassification adjustment for losses included in income before income taxes	3,281	3,095	7,107
Deferred tax benefit	-1,363	-1,222	-2,806
Total change in unrecognized loss on cash flow hedges, net of tax	1,858	191	-739
Change in pension obligation:	'	'	'
Change in pension obligation	123,557	-44,315	-58,630
Deferred tax benefit (expense)	-48,475	17,354	22,959
Reclassification adjustment for losses included in income before income taxes	17,195	11,236	7,071
Deferred tax benefit	-6,689	-4,400	-2,769
Total change in pension obligation, net of tax	85,588	-20,125	-31,369
Net current period other comprehensive income (loss)	56,838	-15,532	-30,045
Total comprehensive income	$224,537	$118,816	$164,983

Consolidated_Statements_of_Cha

Consolidated Statements of Changes In Shareholders' Equity (USD $)

Total

Class A Common Stock

Class B Common Stock

Common Stock

Common Stock

Surplus

Surplus

Surplus

Retained Earnings

Retained Earnings

Retained Earnings

Accumulated Other Comprehensive Loss

Accumulated Other Comprehensive Loss

Accumulated Other Comprehensive Loss

In Thousands, unless otherwise specified

Class A Common Stock

Class B Common Stock

Class A Common Stock

Class B Common Stock

Class A Common Stock

Class B Common Stock

Class A Common Stock

Class B Common Stock

Beginning balance at Dec. 31, 2010

$1,732,962

'

'

$8,757

$1,678

$143,766

'

'

$1,615,290

'

'

($36,529)

'

'

Increase (Decrease) in Stockholders' Equity [Roll Forward]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net income

195,028

'

'

0

0

0

'

'

195,028

'

'

0

'

'

Net current period other comprehensive income

-30,045

'

'

0

0

0

'

'

0

'

'

-30,045

'

'

Repurchase of common stock shares

'

-16,785

-7,602

-113

-38

'

0

0

'

-16,672

-7,564

'

0

0

Cash dividends

-12,430

'

'

0

0

0

'

'

-12,430

'

'

0

'

'

Ending balance at Dec. 31, 2011

1,861,128

'

'

8,644

1,640

143,766

'

'

1,773,652

'

'

-66,574

'

'

Increase (Decrease) in Stockholders' Equity [Roll Forward]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net income

134,348

'

'

0

0

0

'

'

134,348

'

'

0

'

'

Net current period other comprehensive income

-15,532

'

'

0

0

0

'

'

0

'

'

-15,532

'

'

Repurchase of common stock shares

'

-9,131

-94,493

-56

-607

'

0

0

'

-9,075

-93,886

'

0

0

Cash dividends

-12,313

'

'

0

0

0

'

'

-12,313

'

'

0

'

'

Ending balance at Dec. 31, 2012

1,864,007

'

'

8,588

1,033

143,766

'

'

1,792,726

'

'

-82,106

'

'

Increase (Decrease) in Stockholders' Equity [Roll Forward]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net income

167,699

'

'

0

0

0

'

'

167,699

'

'

0

'

'

Net current period other comprehensive income

56,838

'

'

0

0

0

'

'

0

'

'

56,838

'

'

Repurchase of common stock shares

'

-321

'

-2

'

'

0

'

'

-319

'

'

0

'

Cash dividends

-11,548

'

'

0

0

0

'

'

-11,548

'

'

0

'

'

Ending balance at Dec. 31, 2013

$2,076,675

'

'

$8,586

$1,033

$143,766

'

'

$1,948,558

'

'

($25,268)

'

'

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
Statement of Stockholders' Equity [Abstract]	'	'	'
Stock Repurchased During Period, Shares	0	'	'
Cash dividends (in dollars per share)	$1.20	$1.20	$1.20
Class A Common Stock	'	'	'
Statement of Stockholders' Equity [Abstract]	'	'	'
Stock Repurchased During Period, Shares	'	56,276	'
Class B Common Stock	'	'	'
Statement of Stockholders' Equity [Abstract]	'	'	'
Stock Repurchased During Period, Shares	0	100	'

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	$167,699		$134,348	$195,028
Adjustments to reconcile net income to cash provided by operating activities:	'		'	'
Provision for loan and lease losses	-32,255		142,885	232,277
Deferred tax expense (benefit)	47,889		-35,265	-16,637
Change in current taxes payable	-79,173		29,095	-2,820
Depreciation	70,841		68,941	65,170
Change in accrued interest payable	-2,616		-14,366	-14,340
Change in income earned not collected	-724		-5,450	48,423
Business Combination, Bargain Purchase, Gain Recognized, Amount	0		0	-150,417
Gain on sale of other assets	-4,085		0	0
Securities losses (gains)	0		-2,277	288
Origination of loans held for sale	-393,908		-575,705	-513,253
Proceeds from sale of loans held for sale	443,708		589,376	518,398
Gain on sale of loans	-10,738		-7,465	-8,751
Loss on sale of other real estate	6,686		36,229	53,450
Gain on retirement of long-term obligations	0		0	-9,685
Net amortization of premiums and discounts	-115,060		-158,227	-194,434
FDIC receivable for loss share agreements	71,771		-7,181	44,551
Net change in other assets	103,974		-17,617	89,979
Net change in other liabilities	56,998		23,967	-1,541
Net cash provided by operating activities	331,007		201,288	335,686
INVESTING ACTIVITIES	'		'	'
Net change in loans outstanding	323,436		627,806	473,974
Purchases of investment securities available for sale	-2,671,420		-5,169,641	-3,480,699
Proceeds from maturities of investment securities held to maturity	435		480	709
Proceeds from maturities of investment securities available for sale	2,437,851		3,986,370	4,002,724
Proceeds from sales of investment securities available for sale	0		7,900	242,023
Net change in overnight investments	-416,144		-8,205	-36,585
Cash received from the FDIC for loss share agreements	19,373		251,972	293,067
Proceeds from Sale of Other Real Estate	147,550		147,858	135,803
Additions to premises and equipment	-66,037		-88,883	-76,901
Cash Acquired from Acquisition	0		0	1,150,879
Net cash (used) provided by investing activities	-224,956		-244,343	2,704,994
FINANCING ACTIVITIES	'		'	'
Net change in time deposits	-699,005		-1,049,761	-2,273,418
Net change in demand and other interest-bearing deposits	487,046		1,558,512	4,417
Net change in short-term borrowings	-57,087		-101,717	-283,440
Repayment of long-term obligations	-4,152		-196,338	-320,730
Origination of long-term obligations	70,000		310	0
Repurchase of common stock	-321		-103,624	-24,387
Cash dividends paid	-8,663		-15,398	-12,499
Net cash provided (used) by financing activities	-212,182		91,984	-2,910,057
Change in cash and due from banks	-106,131		48,929	130,623
Cash and due from banks at beginning of period	639,730		590,801	460,178
Cash and due from banks at end of period	533,599		639,730	590,801
CASH PAYMENTS FOR:	'		'	'
Interest	59,234		104,514	157,477
Income taxes	102,890		66,453	91,465
SUPPLEMENTAL DISCLOSURE OF NONCASH INVESTING AND FINANCING ACTIVITIES:	'		'	'
Change in unrealized securities gains (losses)	-50,441		7,244	3,370
Change in fair value of cash flow hedge	3,178		316	-1,222
Change in pension obligation	140,752		-33,079	-51,559
Transfers of loans to other real estate	92,125		140,645	213,195
Dividends Declared but not Paid	2,885		0	0
Reclassification	7,368	[1]	0	0
Assets acquired	0		0	2,934,464
Liabilities assumed	0		0	2,784,047
Net assets acquired	$0		$0	$150,417
[1]	Reclassification results from enhancements to the ALLL calculation during the second quarter of 2013 that resulted in the allocation of $15.8 million previously designated as 'nonspecific' to other loan classes and the absorption of $7.4 million of the reserve for unfunded commitments related to unfunded, revocable loan commitments into the ALLL. Further discussion is contained in Note A.

Accounting_Policies_and_Basis_

Accounting Policies and Basis of Presentation	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
Accounting Policies and Basis of Presentation	'
	ACCOUNTING POLICIES AND BASIS OF PRESENTATION
	General
	First Citizens BancShares, Inc. (BancShares) is a financial holding company organized under the laws of Delaware and conducts operations through its banking subsidiary, First-Citizens Bank & Trust Company (FCB), which is headquartered in Raleigh, North Carolina.
	On January 1, 2014, FCB completed the merger of 1st Financial Services Corporation (1st Financial). The 1st Financial merger was accounted for under the acquisition method of accounting. The purchased assets, assumed liabilities and identifiable intangible assets were recorded at their acquisition date estimated fair values. Fair values are subject to refinement for up to one year after the closing date of the transaction as additional information regarding closing date fair values becomes available. See Note V for additional information regarding the 1st Financial merger.
	The accounting and reporting policies of BancShares and its subsidiaries are in accordance with accounting principles generally accepted in the United States of America (GAAP). Additionally, where applicable, the policies conform to the accounting and reporting guidelines prescribed by bank regulatory authorities. The following is a summary of BancShares' more significant accounting policies.
	Nature of Operations
	FCB operates 397 branches in North Carolina, Virginia, West Virginia, Maryland, Tennessee, California, Washington, Florida, Washington, DC, Georgia, Texas, Arizona, New Mexico, Colorado, Oregon, Missouri, Oklahoma and Kansas. FCB provides full-service banking services designed to meet the needs of retail and commercial customers in the markets in which it operates. The services provided include transaction and savings deposit accounts, commercial and consumer loans, trust and asset management. Investment services, including sales of annuities and third party mutual funds are offered through First Citizens Investor Services, Inc., and title insurance is offered through Neuse Financial Services, Inc.
	Principles of Consolidation and Segment Reporting
	The consolidated financial statements of BancShares include the accounts of BancShares and those subsidiaries that are majority owned by BancShares and over which BancShares exercises control. In consolidation, all significant intercompany accounts and transactions are eliminated. The results of operations of companies or assets acquired are included only from the dates of acquisition. All material wholly-owned and majority-owned subsidiaries are consolidated unless GAAP requires otherwise.
	On January 7, 2011, IronStone Bank (ISB), a federally-chartered thrift institution and wholly-owned subsidiary of BancShares, was legally merged into FCB resulting in a single banking subsidiary of BancShares. Prior to the January 2011 merger, FCB and ISB were considered to be distinct operating segments. As a result of the merger and various organizational changes resulting from the merger, there is no longer a focus on the discrete financial measures of each entity, and, based on application of GAAP, no other reportable operating segments exist. Therefore, BancShares now operates as one reportable segment.
	FCB has investments in certain low income housing tax credit and renewable energy LLCs that have been evaluated and determined to be variable interest entities (VIEs). VIEs are legal entities in which equity investors do not have sufficient equity at risk for the entity to independently finance its activities, or as a group, the holders of the equity investment at risk lack the power through voting or similar rights to direct the activities of the entity that most significantly impact its economic performance, or do not have the obligation to absorb the expected losses of the entity or the right to receive expected residual returns of the entity. Consolidation of a VIE is considered appropriate if a reporting entity holds a controlling financial interest in the VIE. Analysis of these investments concluded that FCB is not the primary beneficiary and does not hold a controlling interest in the VIEs and, therefore, the assets and liabilities of these partnerships are not consolidated into the financial statements of FCB or BancShares. The recorded investment in these partnerships is reported within other assets in BancShares' Consolidated Balance Sheets.
	Reclassifications
	In certain instances, amounts reported in prior years' consolidated financial statements have been reclassified to conform to the current financial statement presentation. Such reclassifications had no effect on previously reported cash flows, shareholders' equity or net income.
	During the third quarter of 2013, management reevaluated its fair value leveling methodology and the inputs utilized by the 3rd party pricing services for the current and prior periods. Management concluded that due to the reliance on significant observable inputs, the fair values of its US Treasury, Government agency and other securities should be classified as level 2 rather than the level 1 previously disclosed. Management also concluded that its equity securities should be classified as level 2 rather than the level 1 previously disclosed due to the inactive nature of the markets in which these securities trade.
	Use of Estimates in the Preparation of Financial Statements
	The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the financial statements and the reported amounts of revenues and expenses during the reporting periods. Actual results could differ from those estimates, and different assumptions in the application of these policies could result in material changes in BancShares' consolidated financial position, the consolidated results of its operations or related disclosures. Material estimates that are particularly susceptible to significant change include:
	•	Allowance for loan and lease losses
	•	Fair value of financial instruments, including acquired assets and assumed liabilities
	•	Pension plan assumptions
	•	Cash flow estimates on acquired loans
	•	Receivable from and payable to the FDIC for loss share agreements
	•	Income tax assets, liabilities and expense
	Business Combinations
	BancShares accounts for all business combinations using the acquisition method of accounting as required by Accounting Standards Codification (ASC) Topic 805, Business Combinations. Under this method of accounting, acquired assets and assumed liabilities are included with the acquirer's accounts as of the date of acquisition, with any excess of purchase price over the fair value of the net assets acquired (including identifiable core deposit intangibles (CDI)) capitalized as goodwill. The CDI asset is recognized as an asset apart from goodwill when it arises from contractual or other legal rights or if it is capable of being separated or divided from the acquired entity and sold, transferred, licensed, rented or exchanged. In addition, acquisition-related costs and restructuring costs are recognized as period expenses as incurred.
	The acquired assets and assumed liabilities are recorded at estimated fair values. Management makes significant estimates and exercises significant judgment in accounting for business combinations. Management judgmentally assigns risk ratings to loans based on credit quality, appraisals and estimated collateral values, and estimated expected cash flows to measure fair values for loans. Other real estate (OREO) is valued based upon pending sales contracts and appraised values, adjusted for current market conditions. CDI is valued based on a weighted combination of the income and market approach where the income approach converts anticipated economic benefits to a present value and the market approach evaluates the market in which the asset is traded to find an indication of prices from actual transactions. Management uses quoted or current market prices to determine the fair value of investment securities. Fair values of deposits, short-term borrowings and long-term obligations are based on current market interest rates and are inclusive of any applicable prepayment penalties.
	Cash and Cash Equivalents
	Cash and cash equivalents include cash and due from banks, interest-bearing deposits with banks and Federal funds sold. Cash and cash equivalents have maturities of three months or less. Accordingly, the carrying amount of such instruments is considered a reasonable estimate of fair value.
	Investment Securities
	BancShares' investments consist of government agency securities, U.S. Treasury securities, mortgage-backed securities, corporate bonds, state, county and municipal obligations and equity securities.
	BancShares classifies marketable investment securities as held to maturity, available for sale or trading. Interest income and dividends on securities are recognized in interest income on an accrual basis. Premiums and discounts on debt securities are amortized as an adjustment to interest income using the interest method. At December 31, 2013, and 2012, BancShares had no investment securities held for trading purposes.
	Debt securities are classified as held to maturity where BancShares has both the intent and ability to hold the securities to maturity. These securities are reported at amortized cost.
	Investment securities that may be sold to meet liquidity needs arising from unanticipated deposit and loan fluctuations, changes in regulatory capital requirements or unforeseen changes in market conditions, are classified as available for sale. Securities available for sale are reported at estimated fair value, with unrealized gains and losses reported in accumulated other comprehensive income or loss, net of deferred income taxes, in the shareholders' equity section of the Consolidated Balance Sheets. Gains or losses realized from the sale of securities available for sale are determined by specific identification and are included in noninterest income. As of December 31, 2013, there was no intent to sell any of the securities classified as available for sale.
	BancShares evaluates each held to maturity and available for sale security in a loss position for other-than-temporary impairment (OTTI) in accordance with ASC Topic 320-10, Investments - Debt and Equity Securities, at least quarterly. BancShares considers such factors as the length of time and the extent to which the market value has been below amortized cost, long term expectations and recent experience regarding principal and interest payments, BancShares' intent to sell, and whether it is more likely than not that it would be required to sell those securities before the anticipated recovery of the amortized cost basis. The credit component of an OTTI loss is recognized in earnings and the non-credit component is recognized in accumulated other comprehensive income in situations where BancShares does not intend to sell the security, and it is more likely than not that BancShares will not be required to sell the security prior to recovery.
	Nonmarketable Securities - FHLB Stock and TARP Stock
	Federal law requires a member institution of the Federal Home Loan Bank (FHLB) system to purchase and hold restricted stock of its district FHLB according to a predetermined formula. This stock is restricted in that it may only be sold to the FHLB and all sales must be at par. Accordingly, the FHLB restricted stock is carried at cost, less any applicable impairment charges.
	Investments in preferred stock that had initially been issued under the U. S. Treasury's Troubled Asset Recovery Program (TARP) and were purchased in the auction process initiated when the U. S. Treasury decided to liquidate its investments are carried at cost, less any applicable impairment charges, because the securities are not traded and an active market does not exist. Nonmarketable securities are periodically evaluated for impairment. BancShares considers positive and negative evidence, including the profitability and asset quality of the issuer, dividend payment history and recent redemption experience when determining the ultimate recoverability of the recorded investment. Investments in FHLB stock and TARP stock are included in other assets.
	Loans Held For Sale
	BancShares accounts for new originations of prime residential mortgage loans at the lower of aggregate cost or fair value. Gains and losses on sales of mortgage loans are charged to the Consolidated Statements of Income in mortgage income.
	Loans and Leases
	BancShares' accounting methods for loans and leases differ depending on whether they are originated or acquired, and if acquired, whether or not the acquired assets reflect credit deterioration since the date of origination such that it is probable at the date of acquisition that BancShares will be unable to collect all contractually required payments.
	Originated Loans and Leases
	Loans and leases for which management has the intent and ability to hold for the foreseeable future are classified as held for investment and carried at the principal amount outstanding net of any unearned income, charge-offs and unamortized fees and costs on originated loans. Nonrefundable fees collected and certain direct costs incurred related to loan originations are deferred and recorded as an adjustment to loans and leases outstanding. The net amount of the nonrefundable fees and costs are amortized to interest income over the contractual lives using methods that approximate a constant yield.
	Acquired Loans and Leases
	Acquired loans and leases are recorded at fair value at the date of acquisition. No allowance for loan and lease losses is recorded on the acquisition date as the fair value of the acquired assets incorporates assumptions regarding credit risk.
	Acquired loans and leases are evaluated at acquisition and where a discount is noted at least in part due to credit, the loans are accounted for under the guidance in ASC Topic 310-30, Loans and Debt Securities Acquired with Deteriorated Credit Quality. Purchased impaired loans and leases reflect credit deterioration since origination such that it is probable at acquisition that BancShares will be unable to collect all contractually required payments. As of the acquisition date, the difference between contractually required payments and the cash flows expected to be collected is the nonaccretable difference, which is included as a reduction to the carrying amount of acquired loans and leases. If the timing and amount of the future cash flows is reasonably estimable, any excess of cash flows expected at acquisition over the estimated fair value is the accretable yield and is recognized in interest income over the asset's remaining life using a level yield method.
	Over the life of acquired loans and leases, BancShares continues to estimate cash flows expected to be collected on individual loans and leases or on pools of loans and leases sharing common risk characteristics. BancShares evaluates at each balance sheet date whether the estimated cash flows and corresponding present value of its loans and leases determined using the effective interest rates has decreased and if so, recognizes provision for loan and lease losses in its Consolidated Statements of Income. For any increases in cash flows expected to be collected, BancShares adjusts any prior recorded allowance for loan and lease losses first, and then the amount of accretable yield recognized on a prospective basis over the loan's or pool's remaining life.
	Accretion income is recognized on all non-pooled loans and leases except for situations when the timing and amount of future cash flows cannot be determined. Loans and leases with uncertain future cash flows are accounted for under the cost recovery method and those loans and leases are generally reported as nonaccrual.
	For loans and leases where the cash flow analysis was initially performed at the loan pool level, the amount of accretable yield and nonaccretable difference is determined at the pool level. Each loan pool is made up of assets with similar characteristics at the date of acquisition including loan type, collateral type and performance status. All loan pools that have accretable yield to be recognized in interest income are classified as accruing regardless of the status of individual loans within the pool.
	Impaired Loans, Troubled Debt Restructurings (TDR) and Nonperforming Assets
	Management will deem originated loans and leases to be impaired when, based on current information and events, it is probable that a borrower will be unable to pay all amounts due according to the contractual terms of the loan agreement. Generally, management considers the following loans to be impaired; all TDR loans, commercial and consumer relationships which are nonaccrual or 90+ days past due and greater than $500,000 as well as any other loan management deems impaired. Once a loan is considered impaired, it is required to be individually evaluated for impairment at least quarterly using discounted cash flows, observable market price or the fair value of collateral. When the ultimate collectability of an impaired loan's principal is doubtful, all cash receipts are applied to principal. Once the recorded principal balance has been reduced to zero, future cash receipts are applied to interest income, to the extent that any interest has been foregone.
	A loan is considered a TDR when a modification to a borrower's debt agreement is made and where a concession that is granted for economic or legal reasons related to a borrower's financial difficulties that otherwise would not be granted. TDRs are undertaken in order to improve the likelihood of collection on the loan and may result in a stated interest rate lower than the current market rate for new debt with similar risk, other modifications to the structure of the loan that fall outside of normal underwriting policies and procedures or, in certain limited circumstances, forgiveness of principal or interest. Modifications of acquired loans that are part of a pool accounted for as a single asset are not designated as TDRs. TDRs can involve loans remaining on nonaccrual, moving to nonaccrual or continuing on accruing status, depending on the individual facts and circumstances of the borrower. In circumstances where a portion of the loan balance is charged off, BancShares typically classifies the remaining balance as nonaccrual.
	In connection with commercial TDRs, the decision to maintain a loan that has been restructured on accrual status is based on a current credit evaluation of the borrower's financial condition and prospects for repayment under the modified terms. This evaluation includes consideration of the borrower's current capacity to pay, which may include a review of the borrower's current financial statements, an analysis of cash flow documenting the borrower's capacity to pay all debt obligations and an evaluation of secondary sources of payment from the borrower and any guarantors. This evaluation also includes an evaluation of the borrower's current willingness to pay, which may include a review of past payment history, an evaluation of the borrower's willingness to provide information on a timely basis and consideration of offers from the borrower to provide additional collateral or guarantor support. The credit evaluation also reflects consideration of the adequacy of collateral to cover all principal and interest and trends indicating improving profitability and collectability of receivables.
	Nonaccrual TDRs may be returned to accrual status based on a current credit evaluation of the borrower's financial condition and prospects for repayment under the modified terms. This evaluation includes consideration of the borrower's sustained historical repayment performance for a reasonable period, generally a minimum of six months, prior to the date on which the loan is returned to accrual status. Sustained historical repayment performance for a reasonable time prior to the restructuring may also be considered.
	Nonperforming assets include nonaccrual loans and leases and foreclosed property. Foreclosed property consists of real estate and other assets acquired as a result of loan defaults.
	BancShares classifies all originated loans and leases as past due when the payment of principal and interest based upon contractual terms is greater than 30 days delinquent. Generally, commercial loans are placed on nonaccrual status when principal or interest becomes 90 days past due or when it is probable that principal or interest is not fully collectible, whichever occurs first. Once a loan is placed on nonaccrual status it is evaluated for impairment and a charge-off is recorded in the amount of the impairment. Consumer loans are subject to mandatory charge-off at a specified delinquency date consistent with regulatory guidelines.
	Generally, when loans and leases are placed on nonaccrual status, accrued interest receivable that had been recognized in the current year is reversed against interest income; accrued interest receivable that had been recognized in a prior year is charged off. All payments received thereafter are applied as a reduction to the remaining principal balance as long as concern exists as to the ultimate collection of the principal. Loans and leases are generally removed from nonaccrual status when they become current as to both principal and interest and concern no longer exists as to the collectability of principal and interest.
	Noncovered OREO acquired as a result of foreclosure is carried at net realizable value. Net realizable value equals fair value less estimated selling costs. Any excess of cost over fair value at the time of foreclosure is charged to the allowance for loan and lease losses. Cost is determined based on the sum of unpaid principal, accrued but unpaid interest and acquisition costs associated with the loan.
	OREO are subject to periodic revaluations of the underlying collateral, at least annually. The periodic revaluations are generally based on the appraised value of the property and may include additional adjustments based upon management's review of the valuation and specific knowledge of the OREO. Routine maintenance costs, subsequent declines in market value and net losses on disposal are included in foreclosed property expense. Gains and losses resulting from the sale or writedown of OREO and income and expenses related to its operation are recorded in other noninterest income.
	OREO covered by loss share agreements with the FDIC is reported exclusive of expected reimbursement cash flows from the FDIC at net realizable value. Subsequent downward adjustments to the estimated recoverable value of covered OREO result in a reduction of covered OREO, a charge to foreclosure related expenses and an increase in the FDIC receivable for the estimated amount to be reimbursed, with a corresponding amount recorded as an adjustment to FDIC receivable.
	Covered Assets and Receivable from FDIC for Loss Share Agreements
	Assets subject to loss share agreements with the FDIC include certain acquired loans and OREO. These loss share agreements afford BancShares significant protection. The agreements cover realized losses on certain loans and other assets purchased from the FDIC during the time period specified in the agreements. Realized losses covered include loan contractual balances, accrued interest on loans for up to 90 days, the book value of foreclosed real estate acquired and certain direct costs, less cash or other consideration received by BancShares.
	The FDIC receivable is recorded at fair value at the acquisition date of the indemnified assets and is measured on the same basis as the underlying loans, subject to collectability or contractual limitations. The fair value of the loss share agreements on the acquisition date reflects the discounted reimbursements expected to be received from the FDIC, using an appropriate discount rate, which was based on the market rate for a similar term security at the time of the acquisition adjusted for additional risk premium.
	The loss share agreements continue to be measured on the same basis as the related indemnified assets. Because the acquired loans are subject to the accounting prescribed by ASC 310-30, subsequent changes to the basis of the loss share agreements also follow that model. Deterioration in the credit quality of the loans, which is immediately recorded as an adjustment to the allowance for loan losses, would immediately increase the FDIC receivable, with the offset recorded through the consolidated statement of income. Improvements in the credit quality or cash flows of loans, which is reflected as an adjustment to yield and accreted into income over the remaining life of the loans, decrease the FDIC receivable, with such decrease being amortized into income over (1) the same period as the underlying loans or (2) the life of the loss share agreements, whichever is shorter. Loss assumptions used in the basis of the indemnified loans are consistent with the loss assumptions used to measure the indemnification asset. Discounts and premiums reflecting the estimated timing of expected reimbursements is accreted into income over the life of the loss share agreements.
Collection and other servicing costs related to loans covered under FDIC loss share agreements are charged to noninterest expense as incurred. A receivable from the FDIC is recorded for the estimated amount of such expenses that are expected to be reimbursed and results in an increase to noninterest income. The estimated amount of such reimbursements is determined by several factors including the existence of loan participation agreements with other financial institutions, the presence of partial guarantees from the Small Business Administration and whether a reimbursable loss has been recorded on the loan for which collection and servicing costs have been incurred. Future adjustments to the receivable from the FDIC may be necessary as additional information becomes available related to the amount of previously recorded collection and servicing costs that will actually be reimbursed by the FDIC and the probable timing of such reimbursements.
Payable to the FDIC for Loss Share Agreements
The purchase and assumption agreements for certain FDIC-assisted transactions include contingent payments that may be owed to the FDIC at the termination of the loss share agreements. The contingent payment is due to the FDIC if actual cumulative losses on acquired covered assets are lower than the cumulative losses originally estimated by the FDIC at the time of acquisition. The contingent liability, which is reported in the Consolidated Balance Sheets as a payable to the FDIC for loss share agreements, is calculated by discounting estimated future payments. The ultimate settlement amount of the contingent payment is dependent upon the performance of the underlying covered loans, the passage of time and actual claims submitted to the FDIC.
Allowance for Loan and Lease Losses (ALLL)
Originated Loans
The ALLL represents management's best estimate of probable credit losses within the loan and lease portfolio at the balance sheet date. Management determines the ALLL based on an ongoing evaluation. This evaluation is inherently subjective because it requires material estimates, including the amount and timing of cash flows expected to be received on acquired loans. Those estimates are susceptible to significant change. Adjustments to the ALLL are recorded with a corresponding entry to provision for loan and lease losses. Loan and lease balances deemed to be uncollectible are charged off against the ALLL. Recoveries of amounts previously charged off are generally credited to the ALLL.
Accounting standards require the presentation of certain information at the portfolio segment level, which represents the level at which an entity develops and documents a systematic methodology to determine its ALLL. BancShares evaluates its loan and lease portfolio using three portfolio segments: originated commercial, originated noncommercial and acquired. The originated commercial segment includes commercial construction and land development, commercial mortgage, commercial and industrial, lease financing and other commercial real estate loans, and the related ALLL is calculated based on a risk-based approach as reflected in credit risk grades assigned to commercial segment loans. The originated noncommercial segment includes noncommercial construction and land development, residential mortgage, revolving mortgage and consumer loans, and the associated ALLL was determined using a delinquency-based approach.
BancShares' methodology for calculating the ALLL includes estimating a general allowance for pools of unimpaired loans and specific allocations for significant individual impaired loans. The general allowance is based on net historical loan loss experience for homogeneous groups of loans based mostly on loan type then aggregated on the basis of similar risk characteristics and performance trends. The general allowance estimate also contains qualitative components that allow management to adjust reserves based on historical loan loss experience for changes in the economic environment, portfolio trends and other factors. The specific allowance component is determined when management believes that the collectability of an individually reviewed loan has been impaired and a loss is probable. The fair value of impaired loans is based on the present value of expected cash flows, market prices of the loans, if available, or the value of the underlying collateral. Expected cash flows are discounted at the loans' effective interest rates.
The general allowance considers probable, incurred losses that are inherent within the loan portfolio but have not been specifically identified. Loans are divided into segments for analysis based in part on the risk profile inherent in each segment. Loans are further segmented into classes to appropriately recognize changes in inherent risk. A primary component of determining the general allowance for performing and classified loans not analyzed specifically is the actual loss history of the various classes. Loan loss factors based on historical experience may be adjusted for significant factors that, in management's judgment, affect the collectability of the portfolio at the balance sheet date. For originated commercial loans and leases, management incorporates historical net loss data to develop the applicable loan loss factors by utilizing information that considers the class of the commercial loan and associated risk rating. For the originated noncommercial segment, management incorporates specific loan class and delinquency status trends into the loan loss factors. Loan loss factors may be adjusted quarterly based on changes in the level of historical net charge-offs and model adjustment parameter updates by management, such as the number of periods included in the calculation of loss factors, loss severity and portfolio attrition.
The quarterly ALLL evaluation process for the general allowance also includes a qualitative framework that considers economic conditions, composition of the loan portfolio, trends in delinquent and nonperforming loans, historical loss experience by categories of loans, concentrations of credit, changes in lending policies and underwriting standards, regulatory exam results and other factors indicative of inherent losses remaining in the portfolio. Management may adjust the ALLL calculated based on historical loan loss factors when assessing changes in the factors in the qualitative framework. The adjustments to the ALLL for the qualitative framework are based on economic data, data analysis of portfolio trends and management judgment. These adjustments are specific to the loan class level. Prior to the second quarter of 2013, a portion of the allowance for loan and lease losses was not allocated to any specific class of loans. This nonspecific portion reflected management's best estimate of the elements of imprecision and estimation risk inherent in the calculation of the overall allowance.
During the second quarter of 2013, BancShares implemented enhancements to the process to estimate the ALLL and the reserve for unfunded commitments, described below. Through detailed analysis of historical loss data, the process enhancements enabled allocation of the previously unallocated "nonspecific" ALLL and a portion of the reserve for unfunded loan commitments to specific loan classes. The enhanced ALLL estimates implicitly include the risk of draws on open lines within each loan class. Other than the modifications described above, the enhancements to the methodology had no material impact on the ALLL.
Specific allocations are made for significant, individual impaired loans. Management deems a loan to be impaired when, based upon current information and events, it is probable that BancShares will be unable to collect all amounts due according to the contractual terms of the loan. Generally management considers the following loans to be impaired: all TDR loans, commercial and consumer relationships which are nonaccrual or 90+ days past due and greater than $500,000 as well as any other loan management deems impaired. All impaired loans are reviewed for potential impairment on a quarterly basis. Specific valuation allowances are established or partial charge-offs are recorded on impaired loans for the difference between the loan amount and the estimated fair value.
Management continuously monitors and actively manages the credit quality of the entire loan portfolio and adjusts the ALLL to an appropriate level. By assessing the probable estimated incurred losses in the loan portfolio on a quarterly basis, management is able to adjust specific and general loss estimates based upon the most recent information available. Future adjustments to the ALLL may be necessary based on changes in economic and other conditions. Additionally, various regulatory agencies, as an integral part of their examination process, periodically review BancShares' ALLL. Such agencies may require the recognition of adjustments to the ALLL based on their judgments of information available to them at the time of their examination. Management considers the established ALLL adequate to absorb probable losses that relate to loans and leases outstanding as of December 31, 2013.
Each portfolio segment and the classes within those segments are subject to risks that could have an adverse impact on the credit quality of the loan and lease portfolio and the related ALLL. Management has identified the most significant risks as described below that are generally similar among the segments and classes. While the list is not exhaustive, it provides a description of the risks management has determined are the most significant.
Originated Commercial Loans and Leases
Each commercial loan or lease is centrally underwritten based primarily upon the customer's ability to generate the required cash flow to service the debt in accordance with the contractual terms and conditions of the loan agreement. A complete understanding of the borrower's business, including the experience and background of the principals, is obtained prior to approval. To the extent that the loan or lease is secured by collateral, which is true for the majority of commercial loans and leases, the likely value of the collateral and what level of strength the collateral brings to the transaction is evaluated. To the extent that the principals or other parties provide personal guarantees, the relative financial strength and liquidity of each guarantor is assessed.
The significant majority of relationships in the originated commercial segment are assigned credit risk grades based upon an assessment of conditions that affect the borrower's ability to meet contractual obligations under the loan agreement. This process includes reviewing the borrowers' financial information, payment history, credit documentation, public information and other information specific to each borrower. Credit risk grades are reviewed annually, or at any point management becomes aware of information affecting the borrowers' ability to fulfill their obligations. Our credit risk grading standards are described in Note C.
The impairment assessment and determination of the related specific reserve for each impaired loan is based on a loan's characteristics. Impairment measurement for loans that are not collateral dependent is based on the present value of expected cash flows discounted at the loan's effective interest rate. Specific valuation allowances are established or partial charge-offs are recorded for the difference between the loan amount and the estimated fair value. Impairment measurement for most real estate loans, particularly when a loan is considered to be a probable foreclosure, is based on the fair value of the underlying collateral. Collateral is appraised and market value, appropriately adjusted for an assessment of the sales and marketing costs as well as the expected holding period, is used to calculate an anticipated fair value.
General reserves for collective impairment are based on estimated incurred losses related to unimpaired commercial loans and leases as of the balance sheet date. Incurred loss estimates for the originated commercial segment are based on average loss rates by credit risk ratings, which are estimated using historical loss experience and credit risk rating migrations. Incurred loss estimates may be adjusted through a qualitative assessment to reflect current economic conditions and portfolio trends including credit quality, concentrations, aging of the portfolio and significant policy and underwriting changes.
Common risks to each class of commercial loans include general economic conditions within the markets BancShares serves, as well as risks that are specific to each transaction including demand for products and services, personal events, such as disability or change in marital status and reductions in the value of collateral. Due to the concentration of loans in the medical, dental and related fields, BancShares is susceptible to risks that governmental actions, including implementation of the Affordable Care Act, will fundamentally alter the medical care industry in the United States.
In addition to these common risks for the majority of the originated commercial segment, additional risks are inherent in certain classes of originated commercial loans and leases.
Commercial construction and land development
Commercial construction and land development loans are highly dependent on the supply and demand for commercial real estate in the markets served by BancShares as well as the demand for newly constructed residential homes and lots that customers are developing. Deterioration in demand could result in decreases in collateral values and could make repayment of the outstanding loans more difficult for customers.
Commercial mortgage, commercial and industrial and lease financing
Commercial mortgage loans, commercial and industrial loans and lease financing are primarily dependent on the ability of borrowers to achieve business results consistent with those projected at loan origination resulting in cash flow sufficient to service the debt. To the extent that a customer's business results are significantly unfavorable versus the original projections, the ability for the loan to be serviced on a basis consistent with the contractual terms may be at risk. While these loans and leases are generally secured by real property, personal property or business assets such as inventory or accounts receivable, it is possible that the liquidation of the collateral will not fully satisfy the obligation.
Other commercial real estate
Other commercial real estate loans consist primarily of loans secured by multifamily housing and agricultural loans. The primary risk associated with multifamily loans is the ability of the income-producing property that collateralizes the loan to produce adequate cash flow to service the debt. High unemployment or generally weak economic conditions may result in customers having to provide rental rate concessions to achieve adequate occupancy rates. The performance of agricultural loans is highly dependent on favorable weather, reasonable costs for seed and fertilizer and the ability to successfully market the product at a profitable margin. The demand for these products is also dependent on macroeconomic conditions that are beyond the control of the borrower.
Originated Noncommercial Loans and Leases
Each originated noncommercial loan is centrally underwritten using automated credit scoring and analysis tools. These credit scoring tools take into account factors such as payment history, credit utilization, length of credit history, types of credit currently in use and recent credit inquiries. To the extent that the loan is secured by collateral, the likely value of that collateral is evaluated.
The ALLL for the originated noncommercial segment is primarily calculated on a pooled basis using a delinquency-based approach. Estimates of incurred losses are based on historical loss experience and the migration of receivables through the various delinquency pools applied to the current risk mix. These estimates may be adjusted through a qualitative assessment to reflect current economic conditions, portfolio trends and other factors. The remaining portion of the ALLL related to the originated noncommercial segment results from loans that are deemed impaired. The impairment assessment and determination of the related specific reserve for each impaired loan is based on a loan's characteristics. Impairment measurement for loans that are not collateral dependent is based on the present value of expected cash flows discounted at the loan's effective interest rate. Specific valuation allowances are established or partial charge-offs are recorded for the difference between the loan amount and the estimated fair value. Impairment measurement for most real estate loans, particularly when a loan is considered to be a probable foreclosure, is based on the fair value of the underlying collateral. Collateral is appraised and market value, appropriately adjusted for an assessment of the sales and marketing costs as well as the expected holding period, is used to calculate an anticipated fair value.
Common risks to each class of noncommercial loans include risks that are not specific to individual transactions such as general economic conditions within the markets BancShares serves, particularly unemployment and potential declines in real estate values. Personal events such as disability or change in marital status also add risk to noncommercial loans.
In addition to these common risks for the majority of noncommercial loans, additional risks are inherent in certain classes of noncommercial loans.
Revolving mortgage
Revolving mortgage loans are often secured by second liens on residential real estate, thereby making such loans particularly susceptible to declining collateral values. A substantial decline in collateral value could render a second lien position to be effectively unsecured. Additional risks include lien perfection inaccuracies, disputes with first lienholders and uncertainty regarding the customer's performance with respect to the first lien that may further weaken the collateral position. Further, the open-end structure of these loans creates the risk that customers may draw on the lines in excess of the collateral value if there have been significant declines since origination.
Consumer
The consumer loan portfolio includes loans secured by personal property such as automobiles, marketable securities, other titled recreational vehicles including boats and motorcycles, as well as unsecured consumer debt. The value of underlying collateral within this class is especially volatile due to potential rapid depreciation in values since date of loan origination, potentially in excess of principal balances.
Residential mortgage and noncommercial construction and land development
Residential mortgage and noncommercial construction and land development loans are made to individuals and are typically secured by 1-4 family residential property, undeveloped land and partially developed land in anticipation of pending construction of a personal residence. Significant and rapid declines in real estate values can result in residential mortgage loan borrowers having debt levels in excess of the current market value of the collateral. Noncommercial construction and land development projects can experience delays in completion and cost overruns that exceed the borrower's financial ability to complete the project. Such cost overruns can routinely result in foreclosure of partially completed and unmarketable collateral.
Acquired loans
The risks associated with acquired loans are generally consistent with the risks identified for commercial and noncommercial originated loans and the classes of loans within those segments. However, these loans were underwritten by other institutions with weaker lending standards. Additionally, in some cases, collateral for acquired loans is located in regions that have experienced profound erosion of real estate values. Therefore, there exists a significant risk that acquired loans are not adequately supported by borrower cash flow or the values of underlying collateral.
The ALLL for acquired loans is estimated based on the estimated cash flows approach. Over the life of acquired loans and leases, BancShares continues to estimate cash flows expected to be collected on individual loans and leases or on pools of loans and leases sharing common risk characteristics. BancShares evaluates at each balance sheet date whether the estimated cash flows and corresponding present value of its loans and leases determined using the effective interest rates has decreased and if so, recognizes provision for loan and lease losses. For any increases in cash flows expected to be collected, BancShares adjusts any prior recorded allowance for loan and lease losses first and then the amount of accretable yield recognized on a prospective basis over the loan's or pool's remaining life.
Reserve for Unfunded Commitments
The reserve for unfunded commitments represents the estimated probable losses related to unfunded lending commitments, such as letters of credit, financial guarantees and similar binding commitments. The reserve is calculated in a manner similar to the loans evaluated collectively for impairment, while also considering the timing and likelihood that the available credit will be utilized as well as the exposure upon default. The reserve for unfunded commitments is presented within other liabilities on the consolidated balance sheets, distinct from the ALLL, and adjustments to the reserve for unfunded commitments are included in other noninterest expense in the consolidated statements of income.
Securities Sold Under Repurchase Agreements
Securities sold under repurchase agreements generally have maturities of one day and are reflected as short-term borrowings on the Consolidated Balance Sheets and are recorded based on the amount of cash received in connection with the borrowing. At December 31, 2013, and 2012, BancShares had $97.0 million and $111.9 million of securities sold under repurchase agreements, respectively.
Premises and Equipment
Premises, equipment and capital leases are stated at cost less accumulated depreciation and amortization. For financial reporting purposes, depreciation and amortization are computed using the straight-line method and are expensed over the estimated useful lives of the assets, which range from 25 to 40 years for premises and three to 10 years for furniture, software and equipment. Leasehold improvements are amortized over the terms of the respective leases or the useful lives of the improvements, whichever is shorter. Gains and losses on dispositions are recorded in other noninterest expense. Maintenance and repairs are charged to occupancy expense or equipment expense as incurred. Obligations under capital leases are amortized over the life of the lease using the interest method to allocate payments between principal reduction and interest expense. Rent expense and rental income on operating leases are recorded using the straight-line method over the appropriate lease terms.
Goodwill and Other Intangible Assets
BancShares accounts for acquisitions using the acquisition method of accounting. Under acquisition accounting, if the purchase price of an acquired company exceeds the fair value of its net assets, the excess is carried on the acquirer's balance sheet as goodwill. An intangible asset is recognized as an asset apart from goodwill if it arises from contractual or other legal rights or if it is capable of being separated or divided from the acquired entity and sold, transferred, licensed, rented or exchanged. Intangible assets are identifiable assets, such as core deposit intangibles, resulting from acquisitions which are amortized on an accelerated basis over an estimated useful life and evaluated for impairment whenever events or changes in circumstances indicate the carrying amount of the assets may not be recoverable.
Goodwill is not amortized but is evaluated at least annually for impairment or more frequently if events occur or circumstances change that may trigger a decline in the value of the reporting unit or otherwise indicate that a potential impairment exists. Examples of such events or circumstances include deterioration of general economic conditions, limitations on accessing capital, other equity and credit market developments, adverse change(s) in the environment in which BancShares operates, regulatory or political developments and changes in management, key personnel, strategy or customers. The evaluation of goodwill is based on a variety of factors, including common stock trading multiples and data from comparable acquisitions. Potential impairment of goodwill exists when the carrying amount of a reporting unit exceeds its fair value. In accordance with ASC Topic 350, Intangibles - Goodwill and Other, the fair value for the reporting unit is computed using various methods including market capitalization, price-earnings multiples, price-to-tangible book and market premium.
To the extent the reporting unit's carrying amount exceeds its fair value, an indication exists that the reporting unit's goodwill may be impaired, and the second step of impairment testing will be performed. In the second step, the implied fair value of the reporting unit's goodwill is determined by allocating the reporting unit's fair value to all of its assets (recognized and unrecognized) and liabilities as if the reporting unit had been acquired in a business combination at the date of the impairment test. If the implied fair value of the reporting unit's goodwill is lower than its carrying amount, goodwill is impaired and is written down to the implied fair value. The loss recognized is limited to the carrying amount of goodwill. Once an impairment loss is recognized, future increases in fair value will not result in the reversal of previously recognized losses.
Annual impairment tests are conducted as of July 31 each year. Based on the July 31, 2013, impairment test, management concluded there was no indication of goodwill impairment. In addition to the annual testing requirement, impairment tests are performed if various other events occur including significant adverse changes in the business climate, considering various qualitative and quantitative factors to determine whether impairment exists. There were no such events subsequent to the annual impairment test performed during 2013.
Other intangible assets with estimable lives are amortized over their estimated useful lives, which are periodically reviewed for reasonableness. As a result of the FDIC-assisted transactions in 2011, 2010 and 2009, identifiable intangible assets were recorded representing the estimated value of the core deposits acquired and certain customer relationships.
Fair Values
Fair value disclosures are required for all financial instruments, whether or not recognized in the balance sheet, for which it is practicable to estimate that value. Under GAAP, individual fair value estimates are ranked on a three-tier scale based on the relative reliability of the inputs used in the valuation. Fair values determined using level 1 inputs rely on active and observable markets to price identical assets or liabilities. In situations where identical assets and liabilities are not traded in active markets, fair values may be determined based on level 2 inputs, which represent observable data for similar assets and liabilities. Fair values for assets and liabilities that are not actively traded in observable markets are based on level 3 inputs, which are considered to be nonobservable. Fair value estimates derived from level 3 inputs cannot be substantiated by comparison to independent markets and, in many cases, cannot be realized through immediate settlement of the instrument. Accordingly, the aggregate fair value amounts presented do not necessarily represent the underlying value to BancShares. For additional information, see Note L to the Consolidated Financial Statements.
Income Taxes
Deferred income taxes are reported when different accounting methods have been used in determining income for income tax purposes and for financial reporting purposes. Deferred taxes are computed using the asset and liability approach as prescribed in ASC Topic 740, Income Taxes. Under this method, a deferred tax asset or liability is determined based on the currently enacted tax rates applicable to the period in which the differences between the financial statement carrying amounts and tax basis of existing assets and liabilities are expected to be reported in BancShares' income tax returns. The effect on deferred taxes of a change in tax rates is recognized in income in the period that includes the enactment date.
BancShares continually monitors and evaluates the potential impact of current events on the estimates used to establish income tax expenses and income tax liabilities. On a periodic basis, BancShares evaluates its income tax positions based on current tax law, positions taken by various tax auditors within the jurisdictions that BancShares is required to file income tax returns, as well as potential or pending audits or assessments by such tax auditors.
BancShares files a consolidated federal income tax return and various combined and separate company state tax returns.
Derivative Financial Instruments
A derivative is a financial instrument that derives its cash flows, and therefore its value, by reference to an underlying instrument, index or referenced interest rate. These instruments include interest rate swaps, caps, floors, collars, options or other financial instruments designed to hedge exposures to interest rate risk or for speculative purposes.
BancShares selectively uses interest rate swaps for interest rate risk management purposes. During 2011, BancShares entered into an interest rate swap that qualifies as a cash flow hedge under GAAP. This interest rate swap converts variable-rate exposure on outstanding debt to a fixed rate. The derivative is valued each quarter and changes in the fair value are recorded on the consolidated balance sheet with an offset to other comprehensive income for the effective portion and an offset to the consolidated statement of income for any ineffective portion. The assessment of effectiveness is performed using the long-haul method. BancShares’ interest rate swap has been fully effective since inception; therefore, changes in the fair value of the interest rate swap have had no impact on net income. There are no speculative derivative financial instruments in any period.
In the event of a change in the forecasted cash flows of the underlying hedged item, the related hedge will be terminated, and management will consider the appropriateness of entering into another hedge for the remaining exposure. The fair value of the terminated hedge will be amortized from accumulated other comprehensive income into earnings over the original life of the terminated swap, provided the remaining cash flows are still probable.
Subsequent Events
Management has evaluated subsequent events through the date of filing this Form 10-K. See Note V for more information.
Per Share Data
Net income per share has been computed by dividing net income by the average number of both classes of common shares outstanding during each period. BancShares had no potential common stock outstanding in any period.
Cash dividends per share apply to both Class A and Class B common stock. Shares of Class A common stock carry one vote per share, while shares of Class B common stock carry 16 votes per share.
Defined Benefit Pension Plan
BancShares offers a noncontributory defined benefit pension plan to certain qualifying employees. The calculation of the obligations and related expenses under the plan requires the use of actuarial valuation methods and assumptions. Actuarial assumptions used in the determination of future values of plan assets and liabilities are subject to management judgment and may differ significantly if different assumptions are used. The discount rate assumption used to measure the plan obligation is based on a yield curve developed from high-quality corporate bonds across a full maturity spectrum. The projected cash flows of the pension plan are discounted based on this yield curve, and a single discount rate is calculated to achieve the same present value. Refer to Note M in the Consolidated Financial Statements for disclosures related to BancShares' defined benefit pension plan.
Recently Adopted Accounting Pronouncements
FASB ASU 2013-02, “Comprehensive Income (Topic 220): Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income”
This ASU requires BancShares to provide information about the amounts reclassified out of accumulated other comprehensive income by component. In addition, an entity is required to present, either on the face of the statement where net income is presented or in the notes, significant amounts reclassified out of accumulated other comprehensive income by the respective line items of net income but only if the amount reclassified is required under GAAP to be reclassified to net income in its entirety in the same reporting period. For other amounts, BancShares is required to cross-reference to other disclosures required under GAAP that provide additional detail about those amounts.
For public entities, the amendments are effective prospectively for reporting periods beginning after December 15, 2012. BancShares adopted the methodologies prescribed by this ASU by the date required. Adoption of this ASU did not have a material effect on BancShares' financial position or results of operations. BancShares has included the required disclosures in its Consolidated Statements of Comprehensive Income and in Note U to the Consolidated Financial Statements.
FASB 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”
This ASU addresses the diversity in practice about how to interpret the terms on the same basis and contractual limitations when subsequently measuring an indemnification asset recognized in a government-assisted (Federal Deposit Insurance Corporation or National Credit Union Administration) acquisition of a financial institution that includes a loss sharing agreement (indemnification agreement). When BancShares recognizes an indemnification asset (in accordance with Subtopic 805-20) as a result of a government-assisted acquisition of a financial institution and subsequently a change in the cash flows expected to be collected on the indemnification asset occurs (as a result of a change in cash flows expected to be collected on the assets subject to indemnification), BancShares should subsequently account for the change in the measurement of the indemnification asset on the same basis as the change in the assets subject to indemnification. Any amortization of changes in value should be limited to the contractual term of the indemnification agreement (that is, the lesser of the term of the indemnification agreement and the remaining life of the indemnified assets).
This guidance became effective for annual periods beginning on or after December 15, 2012, and interim periods within those annual periods. BancShares adopted ASU 2012-06 on January 1, 2013. BancShares had previously accounted for its indemnification asset in accordance with this guidance; accordingly, the adoption of this guidance had no impact on BancShares' consolidated financial position, results of operations or cash flows.
Recently Issued Accounting Pronouncements
FASB ASU 2014-01, “Investments—Equity Method and Joint Ventures (Topic 323)—Accounting for Investments in Qualified Affordable Housing Projects”
This ASU permits BancShares to make an accounting policy election to account for their investments in qualified affordable housing projects using the proportional amortization method if certain conditions are met. Under the proportional amortization method, BancShares would amortize the initial cost of the investment in proportion to the tax credits and other tax benefits received and recognize the net investment performance in the income statement as a component of income tax expense (benefit).
For those investments in qualified affordable housing projects not accounted for using the proportional amortization method, the investment should be accounted for as an equity method investment or a cost method investment in accordance with Subtopic 970-323.
The decision to apply the proportional amortization method of accounting will be applied consistently to all qualifying affordable housing project investments rather than a decision to be applied to individual investments.
The amendments in this ASU should be applied retrospectively to all periods presented and are effective for annual periods and interim reporting periods within those annual periods, beginning after December 15, 2014. Early adoption is permitted.
BancShares is in the process of evaluating this ASU and the potential impact of adoption and, therefore, has elected not to adopt the proportional amortization method as outlined in ASU 2014-01 at this time.
FASB ASU 2013-11, “Income Taxes (Topic 740)”
This ASU states that an unrecognized tax benefit, or a portion of an unrecognized tax benefit, should be presented in the 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, except as follows. 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 BancShares to use, and BancShares 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. The assessment of whether a deferred tax asset is available is based on the unrecognized tax benefit and deferred tax asset that exist at the reporting date and should be made presuming disallowance of the tax position at the reporting date.
The provisions of this ASU are effective for fiscal years, and interim periods within those years, beginning after December 15, 2013. Early adoption is permitted.
The provisions of this ASU will be applied prospectively to all unrecognized tax benefits that exist at the effective date. Retrospective application is permitted. BancShares will adopt this ASU by the date required and does not anticipate that the ASU will have a material effect on its financial position or results of operations.
FASB ASU 2013-04, “Liabilities”
This ASU provides guidance for the recognition, measurement, and disclosure of obligations resulting from joint and several liability arrangements for which the total amount of the obligation within the scope of this ASU is fixed at the reporting date, except for obligations addressed within existing guidance in GAAP.
The updated guidance requires BancShares to measure those obligations as the sum of the amount the reporting entity agreed to pay on the basis of its arrangement among its co-obligors and any additional amount the reporting entity expects to pay on behalf of its co-obligors. The guidance in this ASU also requires an entity to disclose the nature and amount of the obligation as well as other information about those obligations.
The amendments in this update are effective for fiscal years beginning after December 31, 2013. Early adoption is permitted. BancShares will adopt the methodologies prescribed by this ASU by the date required, and does not anticipate that the ASU will have a material effect on its financial position or results of operations.

Investments

Investments	12 Months Ended
	Dec. 31, 2013
Investments [Abstract]	'
Investments	'
	INVESTMENTS
	Investment securities as of December 31, 2013, and 2012, along with unrealized gains and losses determined on an individual security basis, are as follows:
		Cost		Gross			Gross unrealized			Fair
				unrealized			losses			value
				gains
		(dollars in thousands)
	Investment securities available for sale
	December 31, 2013
	U.S. Treasury	$	373,223	$	259		$	45		$	373,437
	Government agency	2,543,223		1,798			792			2,544,229
	Mortgage-backed securities	2,486,297		4,526			43,950			2,446,873
	Equity securities	543		21,604			—			22,147
	State, county and municipal	186		1			—			187
	Other	863		—			33			830
	Total investment securities available for sale	$	5,404,335	$	28,188		$	44,820		$	5,387,703
	December 31, 2012
	U.S. Treasury	$	823,241	$	403		$	12		$	823,632
	Government agency	3,052,040		3,501			337			3,055,204
	Mortgage-backed securities	1,315,211		14,787			341			1,329,657
	Equity securities	543		15,822			—			16,365
	State, county and municipal	546		4			—			550
	Other	838		—			18			820
	Total investment securities available for sale	$	5,192,419	$	34,517		$	708		$	5,226,228
	Investment securities held to maturity
	December 31, 2013
	Mortgage-backed securities	$	907	$	67		$	—		$	974
	December 31, 2012
	Mortgage-backed securities	$	1,342	$	133		$	27		$	1,448
	Investments in mortgage-backed securities primarily represent securities issued by the Government National Mortgage Association, Federal National Mortgage Association and Federal Home Loan Mortgage Corporation.
	The following table provides the maturity distribution of amortizing investment securities. Repayments of mortgage-backed securities are dependent on the underlying loan balances. Equity securities do not have a stated maturity date.
		December 31, 2013					December 31, 2012
		Cost		Fair			Cost			Fair
				value						value
		(dollars in thousands)
	Investment securities available for sale
	Amortizing securities maturing in:
	One year or less	$	839,956	$	840,883		$	2,285,159		$	2,286,403
	One through five years	2,077,539		2,077,800			1,590,608			1,592,923
	Five through 10 years	—		—			898			880
	Mortgage-backed securities	2,486,297		2,446,873			1,315,211			1,329,657
	Equity securities	543		22,147			543			16,365
	Total investment securities available for sale	$	5,404,335	$	5,387,703		$	5,192,419		$	5,226,228
	Investment securities held to maturity
	Mortgage-backed securities held to maturity	$	907	$	974		$	1,342		$	1,448
	For each period presented, securities gains (losses) include the following:
		Year ended December 31
		2013		2012			2011
		(dollars in thousands)
	Gross gains on sales of investment securities available for sale	$	—	$	2,324		$	531
	Gross losses on sales of investment securities available for sale	—		(2		)	(793		)
	Other than temporary impairment loss on equity securities	—		(45		)	(26		)
	Total securities gains (losses)	$	—	$	2,277		$	(288	)
	The following table provides information regarding securities with unrealized losses as of December 31, 2013, and 2012.
		Less than 12 months					12 months or more					Total
		Fair		Unrealized			Fair			Unrealized		Fair		Unrealized
		Value		Losses			Value			Losses		Value		Losses
		(dollars in thousands)
	December 31, 2013
	Investment securities available for sale:
	U.S. Treasury	$	102,105	$	45		$	—		$	—	$	102,105	$	45
	Government agency	780,552		761			29,969			31		810,521		792
	Mortgage-backed securities	2,221,213		42,876			26,861			1,074		2,248,074		43,950
	Other	830		33			—			—		830		33
Total	$	3,104,700	$	43,715		$	56,830		$	1,105	$	3,161,530	$	44,820
Investment securities held to maturity:
Mortgage-backed securities	$	—	$	—		$	—		$	—	$	—	$	—
December 31, 2012
Investment securities available for sale:
U.S. Treasury	$	120,045	$	12		$	—		$	—	$	120,045	$	12
Government agency	407,498		337			—			—		407,498		337
Mortgage-backed securities	135,880		214			9,433			127		145,313		341
Other	820		18			—			—		820		18
Total	$	664,243	$	581		$	9,433		$	127	$	673,676	$	708
Investment securities held to maturity:
Mortgage-backed securities	$	—	$	—		$	17		$	27	$	17	$	27
Investment securities with an aggregate fair value of $56.8 million have had continuous unrealized losses for more than 12 months as of December 31, 2013, with an aggregate unrealized loss of $1.1 million. These 18 investments included mortgage-backed and government agency securities. None of the unrealized losses identified as of December 31, 2013, or December 31, 2012, relate to the marketability of the securities or the issuer’s ability to honor redemption obligations. For all periods presented, BancShares had the ability and intent to retain these securities for a period of time sufficient to recover all unrealized losses. Therefore, none of the securities were deemed to be other than temporarily impaired.
Investment securities having an aggregate carrying value of $2.75 billion at December 31, 2013, and $2.35 billion at December 31, 2012, were pledged as collateral to secure public funds on deposit and certain short-term borrowings, and for other purposes as required by law.

Loans_and_Leases

Loans and Leases	12 Months Ended
	Dec. 31, 2013
Loans and Leases Receivable Disclosure [Abstract]	'
Loans and Leases	'
	LOANS AND LEASES
	Loans and leases outstanding include the following as of the dates indicated:
		December 31, 2013			December 31, 2012
		(dollars in thousands)
	Acquired loans
	Commercial:
	Construction and land development	$	78,915		$	237,906
	Commercial mortgage	642,891			1,054,473
	Other commercial real estate	41,381			107,119
	Commercial and industrial	17,254			49,463
	Other	866			1,074
	Total commercial loans	781,307			1,450,035
	Noncommercial:
	Residential mortgage	213,851			297,926
	Revolving mortgage	30,834			38,710
	Construction and land development	2,583			20,793
	Consumer	851			1,771
	Total noncommercial loans	248,119			359,200
	Total acquired loans	1,029,426			1,809,235
	Originated loans and leases:
	Commercial:
	Construction and land development	319,847			309,190
	Commercial mortgage	6,362,490			6,029,435
	Other commercial real estate	178,754			160,980
	Commercial and industrial	1,081,158			1,038,530
	Lease financing	381,763			330,679
	Other	175,336			125,681
	Total commercial loans	8,499,348			7,994,495
	Noncommercial:
	Residential mortgage	982,421			822,889
	Revolving mortgage	2,113,285			2,210,133
	Construction and land development	122,792			131,992
	Consumer	386,452			416,606
	Total noncommercial loans	3,604,950			3,581,620
	Total originated loans and leases	12,104,298			11,576,115
	Total loans and leases	$	13,133,724		$	13,385,350
	At December 31, 2013, $2.56 billion in originated loans were pledged to secure debt obligations, compared to $2.57 billion at December 31, 2012.
	Credit quality indicators
	Loans and leases are monitored for credit quality on a recurring basis. The credit quality indicators used are dependent on the portfolio segment to which the loan relates. Originated commercial loans and leases, originated noncommercial loans and leases and acquired loans have different credit quality indicators as a result of the methods used to monitor each of these loan segments.
	The credit quality indicators for originated commercial loans and leases and all acquired loans and leases are developed through review of individual borrowers on an ongoing basis. Each borrower is evaluated at least annually with more frequent evaluation of more severely criticized loans or leases. The indicators represent the rating for loans or leases as of the date presented based on the most recent assessment performed. These credit quality indicators are defined as follows:
	Pass – A pass rated asset is not adversely classified because it does not display any of the characteristics for adverse classification.
	Special mention – A special mention asset has potential weaknesses that deserve management’s close attention. If left uncorrected, such potential weaknesses may result in deterioration of the repayment prospects or collateral position at some future date. Special mention assets are not adversely classified and do not warrant adverse classification.
	Substandard – A substandard asset is inadequately protected by the current net worth and paying capacity of the borrower or of the collateral pledged, if any. Assets classified as substandard generally have a well-defined weakness, or weaknesses, that jeopardize the liquidation of the debt. These assets are characterized by the distinct possibility of loss if the deficiencies are not corrected.
	Doubtful – An asset classified as doubtful has all the weaknesses inherent in an asset classified substandard with the added characteristic that the weaknesses make collection or liquidation in full highly questionable and improbable on the basis of currently existing facts, conditions and values.
	Loss – Assets classified as loss are considered uncollectible and of such little value that it is inappropriate to be carried as an asset. This classification is not necessarily equivalent to no potential for recovery or salvage value, but rather that it is not appropriate to defer a full charge-off even though partial recovery may be effected in the future.
	Ungraded – Ungraded loans represent loans that are not included in the individual credit grading process due to their relatively small balances or borrower type. The majority of originated, ungraded loans at December 31, 2013, relate to business credit cards and tobacco buyout loans classified as commercial and industrial loans. Business credit card loans with an outstanding balance of $72.4 million at December 31, 2013, are subject to automatic charge-off when they become 120 days past due in the same manner as unsecured consumer lines of credit. Tobacco buyout loans with an outstanding balance of $22.1 million at December 31, 2013, are secured by assignments of receivables made pursuant to the Fair and Equitable Tobacco Reform Act of 2004. The credit risk associated with these loans is considered low as the payments that began in 2005 and continue through 2014 are made by the Commodity Credit Corporation, which is part of the United States Department of Agriculture. Final payment from the Commodity Credit Corporation was received during January 2014.
	The credit quality indicators for originated, noncommercial loans are based on the delinquency status of the borrower. As the borrower becomes more delinquent, the likelihood of loss increases.
	The composition of the loans and leases outstanding at December 31, 2013, and December 31, 2012, by credit quality indicator is provided below:
		Originated commercial loans and leases
	Grade:	Construction and land			Commercial			Other		Commercial and		Lease financing		Other		Total originated commercial loans and leases
		development			mortgage			commercial real estate		industrial
		(dollars in thousands)
	December 31, 2013
	Pass	$	308,231		$	6,094,505		$	174,913	$	964,840	$	375,371	$	174,314	$	8,092,174
	Special mention	8,620			119,515			1,362		14,686		2,160		982		147,325
	Substandard	2,944			141,913			2,216		6,352		3,491		40		156,956
	Doubtful	52			5,159			75		144		592		—		6,022
	Ungraded	—			1,398			188		95,136		149		—		96,871
	Total	$	319,847		$	6,362,490		$	178,754	$	1,081,158	$	381,763	$	175,336	$	8,499,348
	December 31, 2012
	Pass	$	274,480		$	5,688,541		$	151,549	$	894,998	$	325,626	$	124,083	$	7,459,277
	Special mention	14,666			166,882			2,812		13,275		1,601		837		200,073
	Substandard	18,761			157,966			5,038		12,073		1,663		756		196,257
Doubtful	952			13,475			98		1,040		771		—		16,336
Ungraded	331			2,571			1,483		117,144		1,018		5		122,552
Total	$	309,190		$	6,029,435		$	160,980	$	1,038,530	$	330,679	$	125,681	$	7,994,495
	Originated noncommercial loans and leases
	Residential			Revolving			Construction		Consumer		Total originated noncommercial
	mortgage			mortgage			and land				loans
							development
	(dollars in thousands)
December 31, 2013
Current	$	955,300		$	2,095,480		$	121,026	$	382,710	$	3,554,516
30-59 days past due	12,885			10,977			1,193		2,114		27,169
60-89 days past due	4,658			2,378			317		955		8,308
90 days or greater past due	9,578			4,450			256		673		14,957
Total	$	982,421		$	2,113,285		$	122,792	$	386,452	$	3,604,950
December 31, 2012
Current	$	786,626		$	2,190,186		$	128,764	409,218		$	3,514,794
30-59 days past due	15,711			12,868			1,941		4,405		34,925
60-89 days past due	7,559			3,200			490		1,705		12,954
90 days or greater past due	12,993			3,879			797		1,278		18,947
Total	$	822,889		$	2,210,133		$	131,992	$	416,606	$	3,581,620
	Acquired loans
Grade:	Construction			Commercial			Other		Commercial		Residential		Revolving		Construction		Consumer		Total acquired
	and land			mortgage			commercial		and		mortgage		mortgage		and land		and other		loans
	development -						real estate		industrial						development -
	commercial														noncommercial
	(dollars in thousands)
December 31, 2013
Pass	$	2,619		$	296,824		$	22,225	$	8,021	$	135,326	$	26,322	$	149	$	1,345	$	492,831
Special mention	15,530			125,295			3,431		2,585		6,301		2,608		—		—		155,750
Substandard	52,228			179,657			7,012		5,225		52,774		1,013		2,139		—		300,048
Doubtful	7,436			40,471			8,713		1,257		2,058		891		295		—		61,121
Ungraded	1,102			644			—		166		17,392		—		—		372		19,676
Total	$	78,915		$	642,891		$	41,381	$	17,254	$	213,851	$	30,834	$	2,583	$	1,717	$	1,029,426
December 31, 2012
Pass	$	17,010		$	376,974		$	33,570	$	19,451	$	172,165	$	29,540	$	334	$	1,617	$	650,661
Special mention	25,734			259,264			17,518		12,465		14,863		1,736		—		34		331,614
Substandard	105,061			344,542			44,335		14,698		83,193		7,434		17,190		239		616,692
Doubtful	87,445			73,016			11,696		2,757		4,268		—		3,269		117		182,568
Ungraded	2,656			677			—		92		23,437		—		—		838		27,700
Total	$	237,906		$	1,054,473		$	107,119	$	49,463	$	297,926	$	38,710	$	20,793	$	2,845	$	1,809,235
The aging of the outstanding loans and leases, by class, at December 31, 2013, and December 31, 2012, (excluding loans and leases acquired with deteriorated credit quality) is provided in the table below. The calculation of days past due begins on the day after payment is due and includes all days through which all required interest or principal has not been paid. Loans and leases 30 days or less past due are considered current due to various grace periods that allow borrowers to make payments within a stated period after the due date and still remain in compliance with the loan agreement.
	30-59 days			60-89 days			90 days or greater		Total past		Current		Total loans
	past due			past due					due				and leases
	(dollars in thousands)
December 31, 2013
Originated loans and leases:
Construction and land development - commercial	$	1,603		$	9		$	457	$	2,069	$	317,778	$	319,847
Commercial mortgage	11,131			3,601			14,407		29,139		6,333,351		6,362,490
Other commercial real estate	139			210			470		819		177,935		178,754
Commercial and industrial	3,336			682			436		4,454		1,076,704		1,081,158
Lease financing	789			1,341			101		2,231		379,532		381,763
Other	—			85			—		85		175,251		175,336
Residential mortgage	12,885			4,658			9,578		27,121		955,300		982,421
Revolving mortgage	10,977			2,378			4,450		17,805		2,095,480		2,113,285
Construction and land development - noncommercial	1,193			317			256		1,766		121,026		122,792
Consumer	2,114			955			673		3,742		382,710		386,452
Total originated loans and leases	$	44,167		$	14,236		$	30,828	$	89,231	$	12,015,067	$	12,104,298
December 31, 2012
Originated loans and leases:
Construction and land development - commercial	$	927		$	—		$	7,878	$	8,805	$	300,385	$	309,190
Commercial mortgage	24,447			4,179			21,327		49,953		5,979,482		6,029,435
Other commercial real estate	387			1,240			1,034		2,661		158,319		160,980
Commercial and industrial	2,833			1,096			605		4,534		1,033,996		1,038,530
Lease financing	991			138			621		1,750		328,929		330,679
Other	18			13			—		31		125,650		125,681
Residential mortgage	15,711			7,559			12,993		36,263		786,626		822,889
Revolving mortgage	12,868			3,200			3,879		19,947		2,190,186		2,210,133
Construction and land development - noncommercial	1,941			490			797		3,228		128,764		131,992
Consumer	4,405			1,705			1,278		7,388		409,218		416,606
Total originated loans and leases	$	64,528		$	19,620		$	50,412	$	134,560	$	11,441,555	$	11,576,115
The recorded investment, by class, in loans and leases on nonaccrual status, and loans and leases greater than 90 days past due and still accruing at December 31, 2013, and December 31, 2012, (excluding loans and leases acquired with deteriorated credit quality) are as follows:
	December 31, 2013						December 31, 2012
	Nonaccrual			Loans and			Nonaccrual		Loans and
	loans and			leases > 90			loans and		leases > 90
	leases			days and			leases		days and
				accruing					accruing
	(dollars in thousands)
Originated loans and leases:
Construction and land development - commercial	$	544		$	—		$	14,930	$	541
Commercial mortgage	33,529			1,113			50,532		1,671
Commercial and industrial	1,428			294			6,972		466
Lease financing	832			—			1,075		—
Other commercial real estate	1,610			—			2,319		—
Construction and land development - noncommercial	457			256			668		111
Residential mortgage	14,701			1,998			12,603		3,337
Revolving mortgage	—			4,450			—		3,877
Consumer	69			673			746		1,269
Total originated loans and leases	$	53,170		$	8,784		$	89,845	$	11,272
Acquired Loans
The following table provides changes in the carrying value of acquired loans during the years ended December 31, 2013, and December 31, 2012:
	2013			2012
	(dollars in thousands)
Balance at January 1	$	1,809,235		$	2,362,152
Reductions for repayments, foreclosures and decreases in fair value	(779,809		)	(552,917		)
Balance at December 31	$	1,029,426		$	1,809,235
Outstanding principal balance at December 31	$	1,833,955		$	3,281,958
The carrying value of loans on the cost recovery method was $28.5 million at December 31, 2013, and $74.5 million at December 31, 2012. The cost recovery method is applied to loans when the timing of future cash flows is not reasonably estimable due to borrower nonperformance or uncertainty in the ultimate disposition of the asset.
For acquired loans, improved cash flow estimates and receipt of unscheduled loan payments result in the reclassification of nonaccretable difference to accretable yield. Accretable yield resulting from the improved ability to estimate future cash flows generally does not represent amounts previously identified as nonaccretable difference.
The following table documents changes to the amount of accretable yield for 2013 and 2012. Removals represent a reduction to the accretable yield as a result of loans that were fully charged off or paid off during the period.
	2013			2012
	(dollars in thousands)
Balance at January 1	$	539,564		$	276,690
Accretion	(224,672		)	(304,023		)
Reclassifications from nonaccretable difference	92,349			353,708
Changes in expected cash flows that do not affect nonaccretable difference	32,749			213,189
Balance at December 31	$	439,990		$	539,564

Allowance_for_Loan_and_Lease_L

Allowance for Loan and Lease Losses	12 Months Ended
	Dec. 31, 2013
Allowance for Loan and Lease Losses, Adjustments, Net [Abstract]	'
Allowance for Loan and Lease Losses	'
	ALLOWANCE FOR LOAN AND LEASE LOSSES
	Activity in the allowance for loan and lease losses is summarized as follows:
		Originated			Acquired				Total
		(dollars in thousands)
	Balance at December 31, 2010	$	176,517		$	51,248			$	227,765
	Provision for loan and lease losses	57,799			174,478				232,277
	Loans and leases charged off	(59,287		)	(137,553		)		(196,840		)
	Loans and leases recovered	5,854			1,088				6,942
	Net charge-offs	(53,433		)	(136,465		)		(189,898		)
	Balance at December 31, 2011	180,883			89,261				270,144
	Provision for loan and lease losses	42,046			100,839				142,885
	Loans and leases charged off	(50,208		)	(50,270		)		(100,478		)
	Loans and leases recovered	6,325			142				6,467
	Net charge-offs	(43,883		)	(50,128		)		(94,011		)
	Balance at December 31, 2012	179,046			139,972				319,018
	Reclassification (1)	7,368			—				7,368
	Provision for loan and lease losses	19,289			(51,544		)		(32,255		)
	Loans and leases charged off	(33,118		)	(34,908		)		(68,026		)
	Loans and leases recovered	7,289			—				7,289
	Net charge-offs	(25,829		)	(34,908		)		(60,737		)
	Balance at December 31, 2013	$	179,874		$	53,520			$	233,394
	(1) Reclassification results from enhancements to the ALLL calculation during the second quarter of 2013 that resulted in the allocation of $15.8 million previously designated as 'nonspecific' to other loan classes and the absorption of $7.4 million of the reserve for unfunded commitments related to unfunded, revocable loan commitments into the ALLL. Further discussion is contained in Note A.
	Activity in the allowance for loan and lease losses, ending balances of loans and leases and related allowance by class of loans is summarized as follows:
		Construction			Commercial				Other				Commercial				Lease			Other			Residential			Revolving			Construction			Consumer			Non-			Total
		and land			mortgage				commercial				and				financing						mortgage			mortgage			and land						specific
		development							real estate				industrial																development
		- commercial																											- non-
																													commercial
		(dollars in thousands)
	Originated Loans
	Allowance for loan and lease losses:
	Balance at January 1, 2012	$	5,467		$	67,486			$	2,169			$	23,723			$	3,288		$	1,315		$	8,879		$	27,045		$	1,427		$	25,962		$	14,122		$	180,883
	Provision	9,665			18,198				130				(4,982		)		498			(116		)	(782		)	8,783			1,161			7,763			1,728			42,046
	Charge-offs	(9,546		)	(7,081		)		(254		)		(5,472		)		(361		)	(28		)	(4,790		)	(11,341		)	(1,047		)	(10,288		)	—			(50,208		)
	Recoveries	445			1,626				14				781				96			4			529			698			180			1,952			—			6,325
	Balance at December 31, 2012	6,031			80,229				2,059				14,050				3,521			1,175			3,836			25,185			1,721			25,389			15,850			179,046
	Reclassification (1)	5,141			27,421				(815		)		7,551				(253		)	(1,288		)	5,717			(9,838		)	(478		)	(10,018		)	(15,772		)	7,368
	Provision	2,809			(4,485		)		(32		)		4,333				1,646			308			2,786			6,296			(379		)	6,085			(78		)	19,289
	Charge-offs	(4,685		)	(3,904		)		(312		)		(4,785		)		(272		)	(6		)	(2,387		)	(6,064		)	(392		)	(10,311		)	—			(33,118		)
	Recoveries	1,039			996				109				1,213				107			1			559			660			209			2,396			—			7,289
	Balance at December 31, 2013	$	10,335		$	100,257			$	1,009			$	22,362			$	4,749		$	190		$	10,511		$	16,239		$	681		$	13,541		$	—		$	179,874
	(1) Reclassification results from enhancements to the ALLL calculation during the second quarter of 2013 that resulted in the allocation of $15.8 million previously designated as 'nonspecific' to other loan classes and the absorption of $7.4 million of the reserve for unfunded commitments related to unfunded, revocable loan commitments into the ALLL. Further discussion is contained in Note A.
		Construction			Commercial				Other				Commercial				Lease			Other			Residential			Revolving			Construction			Consumer			Non-			Total
		and land			mortgage				commercial				and industrial				financing						mortgage			mortgage			and land						specific
		development							real estate																				development
		- commercial																											- non-commercial
		(dollars in thousands)
	Allowance for loan and lease losses:
	December 31, 2013
	ALLL for loans and leases individually evaluated for impairment	$	103		$	6,873			$	209			$	771			$	54		$	—		$	1,586		$	372		$	72		$	121		$	—		$	10,161
	ALLL for loans and leases collectively evaluated for impairment	10,232			93,384				800				21,591				4,695			190			8,925			15,867			609			13,420			—			169,713
	Nonspecific ALLL	—			—				—				—				—			—			—			—			—			—			—			—
	Total allowance for loan and lease losses	$	10,335		$	100,257			$	1,009			$	22,362			$	4,749		$	190		$	10,511		$	16,239		$	681		$	13,541		$	—		$	179,874
	December 31, 2012
	ALLL for loans and leases individually evaluated for impairment	$	2,469		$	11,697			$	298			$	2,133			$	202		$	53		$	959		$	1		$	287		$	256		$	—		$	18,355
	ALLL for loans and leases collectively evaluated for impairment	3,562			68,532				1,761				11,917				3,319			1,122			2,877			25,184			1,434			25,133			—			144,841
	Nonspecific ALLL	—			—				—				—				—			—			—			—			—			—			15,850			15,850
	Total allowance for loan and lease losses	$	6,031		$	80,229			$	2,059			$	14,050			$	3,521		$	1,175		$	3,836		$	25,185		$	1,721		$	25,389		$	15,850		$	179,046
		Construction			Commercial				Other				Commercial				Lease			Other			Residential			Revolving			Construction			Consumer			Non-			Total
		and land			mortgage				commercial				and industrial				financing						mortgage			mortgage			and land						specific
		development							real estate																				development
		- commercial																											- non-commercial
		(dollars in thousands)
Loans and leases:
December 31, 2013
Loans and leases individually evaluated for impairment	$	2,272		$	97,111			$	1,878			$	9,300			$	188		$	—		$	15,539		$	3,596		$	1,108		$	1,154		$	—		$	132,146
Loans and leases collectively evaluated for impairment	317,575			6,265,379				176,876				1,071,858				381,575			175,336			966,882			2,109,689			121,684			385,298			—			11,972,152
Total loan and leases	$	319,847		$	6,362,490			$	178,754			$	1,081,158			$	381,763		$	175,336		$	982,421		$	2,113,285		$	122,792		$	386,452		$	—		$	12,104,298
December 31, 2012
Loans and leases individually evaluated for impairment	$	17,075		$	133,804			$	3,375			$	22,619			$	804		$	707		$	15,836		$	4,203		$	1,321		$	2,509		$	—		$	202,253
Loans and leases collectively evaluated for impairment	292,115			5,895,631				157,605				1,015,911				329,875			124,974			807,053			2,205,930			130,671			414,097			—			11,373,862
Total loan and leases	$	309,190		$	6,029,435			$	160,980			$	1,038,530			$	330,679		$	125,681		$	822,889		$	2,210,133		$	131,992		$	416,606		$	—		$	11,576,115
	Construction			Commercial				Other				Commercial				Lease			Residential			Revolving			Construction			Consumer			Total
	and land			mortgage				commercial				and				financing			mortgage			mortgage			and land			and other
	development -							real estate				industrial													development -
	commercial																								noncommercial
	(dollars in thousands)
Acquired Loans
Allowance for loan and lease losses:
Balance at January 1, 2012	$	16,693		$	39,557			$	16,862			$	5,500			$	13		$	5,433		$	77		$	4,652		$	474		$	89,261
Provision	23,160			34,227				(4,372		)		11,839				(13		)	18,401			10,796			6,520			281			100,839
Charge-offs	(8,667		)	(23,509		)		(1,256		)		(8,442		)		—			(4,139		)	(1,119		)	(2,885		)	(253		)	(50,270		)
Recoveries	—			—				—				—				—			142			—			—			—			142
Balance at December 31, 2012	31,186			50,275				11,234				8,897				—			19,837			9,754			8,287			502			139,972
Provision	(22,942		)	(3,872		)		(8,949		)		470				—			(5,487		)	(6,399		)	(4,170		)	(195		)	(51,544		)
Charge-offs	(6,924		)	(16,497		)		(931		)		(4,092		)		—			(2,548		)	(396		)	(3,435		)	(85		)	(34,908		)
Recoveries	—			—				—				—				—			—			—			—			—			—
Balance at December 31, 2013	$	1,320		$	29,906			$	1,354			$	5,275			$	—		$	11,802		$	2,959		$	682		$	222		$	53,520
Allowance for loan and lease losses:
December 31, 2013
ALLL for loans and leases acquired with deteriorated credit quality	$	1,320		$	29,906			$	1,354			$	5,275			$	—		$	11,802		$	2,959		$	682		$	222		$	53,520
December 31, 2012
ALLL for loans and leases acquired with deteriorated credit quality	31,186			50,275				11,234				8,897				—			19,837			9,754			8,287			502			139,972
Loans and leases:
December 31, 2013
Loans and leases acquired with deteriorated credit quality	78,915			642,891				41,381				17,254				—			213,851			30,834			2,583			1,717			1,029,426
December 31, 2012
Loans and leases acquired with deteriorated credit quality	237,906			1,054,473				107,119				49,463				—			297,926			38,710			20,793			2,845			1,809,235
The following tables provide information on originated impaired loans and leases, exclusive of loans and leases evaluated collectively as a homogeneous group, including interest income recognized in the period during which the loans and leases were considered impaired.
	With a			With no				Total				Unpaid				Related
	recorded			recorded								principal				allowance
	allowance			allowance								balance				recorded
	(dollars in thousands)
December 31, 2013
Impaired originated loans and leases
Construction and land development - commercial	$	1,025		$	1,247			$	2,272			$	7,306			$	103
Commercial mortgage	57,819			39,292				97,111				103,522				6,873
Other commercial real estate	783			1,095				1,878				2,279				209
Commercial and industrial	7,197			2,103				9,300				10,393				771
Lease financing	133			55				188				188				54
Residential mortgage	11,534			4,005				15,539				15,939				1,586
Revolving mortgage	3,382			214				3,596				3,596				372
Construction and land development - noncommercial	651			457				1,108				1,108				72
Consumer	1,154			—				1,154				1,154				121
Total impaired originated loans and leases	$	83,678		$	48,468			$	132,146			$	145,485			$	10,161
December 31, 2012
Impaired originated loans and leases
Construction and land development - commercial	$	5,941		$	11,134			$	17,075			$	32,898			$	2,469
Commercial mortgage	39,648			94,156				133,804				136,743				11,697
Other commercial real estate	1,425			1,950				3,375				3,475				298
Commercial and industrial	7,429			15,190				22,619				22,619				2,133
Lease financing	665			139				804				804				202
Other	—			707				707				707				53
Residential mortgage	9,346			6,490				15,836				16,229				959
Revolving mortgage	1,238			2,965				4,203				4,203				1
Construction and land development - noncommercial	1,162			159				1,321				1,321				287
Consumer	1,609			900				2,509				2,509				256
Nonspecific	—			—				—				—				—
Total impaired originated loans and leases	$	68,463		$	133,790			$	202,253			$	221,508			$	18,355
	YTD			YTD Interest Income Recognized
	Average
	Balance
	(dollars in thousands)
Year ended December 31, 2013
Originated impaired loans and leases:
Construction and land development - commercial	$	6,414		$	270
Commercial mortgage	105,628			5,702
Other commercial real estate	2,658			144
Commercial and industrial	12,772			642
Lease financing	350			22
Other	—			—
Residential mortgage	15,470			444
Revolving mortgage	5,653			485
Construction and land development - noncommercial	958			55
Consumer	1,427			53
Total originated impaired loans and leases	$	151,330		$	7,817
Year ended December 31, 2012
Originated impaired loans and leases:
Construction and land development - commercial	$	22,493		$	399
Commercial mortgage	96,082			4,630
Other commercial real estate	2,690			142
Commercial and industrial	13,658			788
Lease financing	497			37
Other	424			23
Residential mortgage	14,951			586
Revolving mortgage	2,931			68
Construction and land development - noncommercial	2,850			41
Consumer	1,850			21
Total originated impaired loans and leases	$	158,426		$	6,735
Year ended December 31, 2011
Originated impaired loans and leases:
Construction and land development - commercial	$	26,612		$	56
Commercial mortgage	65,729			1,330
Other commercial real estate	1,368			55
Commercial and industrial	12,984			456
Lease financing	587			21
Other	38			—
Residential mortgage	9,252			300
Revolving mortgage	—			—
Construction and land development - noncommercial	2,022			105
Consumer	636			18
Total originated impaired loans and leases	$	119,228		$	2,341
At December 31, 2013, acquired loans that have had an adverse change in expected cash flows since the date of acquisition equaled $459.9 million, for which $53.5 million in related allowance for loan losses has been recorded.
Troubled Debt Restructurings
BancShares accounts for certain loan modifications or restructurings as troubled debt restructurings (TDRs). In general, the modification or restructuring of a loan is considered a TDR if, for economic reasons or legal reasons related to a borrower's financial difficulties, a concession is granted to the borrower that creditors would not otherwise consider. Concessions may relate to the contractual interest rate, maturity date, payment structure or other actions. In accordance with GAAP, loans acquired under ASC 310-30, Loans and Debt Securities Acquired
with Deteriorated Credit Quality, are not initially considered to be TDRs, but can be classified as such if a modification is made subsequent to acquisition. The following table provides a summary of total TDRs by accrual status.
	December 31, 2013											December 31, 2012
	Accruing			Nonaccruing				Total				Accruing				Nonaccruing			Total
	(dollars in thousands)
Commercial loans
Construction and land development - commercial	$	21,032		$	1,002			$	22,034			$	47,368			$	26,920		$	74,288
Commercial mortgage	113,323			23,387				136,710				151,728				37,603			189,331
Other commercial real estate	3,470			1,150				4,620				10,137				2,194			12,331
Commercial and industrial	9,838			1,142				10,980				10,940				7,237			18,177
Lease	49			—				49				224				—			224
Total commercial loans	147,712			26,681				174,393				220,397				73,954			294,351
Noncommercial
Residential	23,343			3,663				27,006				28,777				5,828			34,605
Revolving mortgage	3,095			—				3,095				48				—			48
Construction and land development - noncommercial	651			457				1,108				1,657				—			1,657
Consumer and other	1,154			—				1,154				2,509				—			2,509
Total noncommercial loans	28,243			4,120				32,363				32,991				5,828			38,819
Total loans	$	175,955		$	30,801			$	206,756			$	253,388			$	79,782		$	333,170
Total troubled debt restructurings at December 31, 2013, equaled $206.8 million, of which $102.3 million were acquired and $104.4 million were originated. TDRs at December 31, 2012, totaled $333.2 million, which consisted of $193.2 million acquired and $140.0 million that were originated.
The majority of TDRs are included in the special mention, substandard or doubtful grading categories, which results in more elevated loss expectations when determining the expected cash flows that are used to determine the allowance for loan losses associated with these loans. When a restructured loan subsequently defaults, it is evaluated and downgraded if appropriate. The more severely graded the loan, the lower the estimated expected cash flows and the greater the allowance recorded. Further, TDRs over $500,000 and graded substandard or lower are evaluated individually for impairment through a review of collateral values.
The following tables provide the types of TDRs made during the three months ended December 31, 2013, and 2012, as well as a summary of loans that were modified as a TDR during the 12 months ended December 31, 2013, and 2012 that subsequently defaulted during the three months ended December 31, 2013, and 2012. BancShares defines payment default as movement of the TDR to nonaccrual status, foreclosure or charge-off, whichever occurs first.
.
	Three months ended December 31, 2013									Three months ended December 31, 2012
	All restructurings				Restructurings with payment default					All restructurings					Restructurings with payment default
	Number of Loans	Recorded investment at period end			Number of Loans	Recorded investment at period end				Number of Loans	Recorded investment at period end				Number of Loans	Recorded investment at period end
	(dollars in thousands)
Originated loans
Interest only period provided
Commercial mortgage	1	$	305		1	$	—			1	$	861			1	$	595
Commercial and industrial	1	198			—	—				2	337				1	746
Residential mortgage	—	—			—	—				—	—				1	559
Construction and land development-noncommercial	—	—			—	—				1	476				—	—
Total interest only	2	503			1	—				4	1,674				3	1,900
Loan term extension
Commercial mortgage	1	770			—	—				7	2,319				3	122
Commercial and industrial	—	—			—	—				1	24				1	24
Residential mortgage	3	241			—	—				1	16				1	108
Consumer	—	—			—	—				1	8				—	—
Total loan term extension	4	1,011			—	—				10	2,367				5	254
Below market interest rate
Commercial mortgage	8	3,964			1	295				8	3,444				1	490
Commercial and industrial	—	—			—	—				3	311				—	—
Residential mortgage	6	347			—	—				2	130				1	59
Revolving mortgage	6	496			2	378				—	—				—	—
Consumer	—	—			—	—				2	16				—	—
Total below market interest rate	20	4,807			3	673				15	3,901				2	549
Discharged from bankruptcy
Residential mortgage	1	32			—	—				—	—				—	—
Revolving mortgage	—	—			3	130				—	—				—	—
Total discharged from bankruptcy	1	32			3	130				—	—				—	—
Total originated restructurings	27	$	6,353		7	$	803			29	$	7,942			10	$	2,703
	Three months ended December 31, 2013									Three months ended December 31, 2012
	All restructurings				Restructurings with payment default					All restructurings					Restructurings with payment default
	Number of loans	Recorded investment at period end			Number of loans	Recorded investment at period end				Number of loans	Recorded investment at period end				Number of loans	Recorded investment at period end
	(dollars in thousands)
Acquired loans
Interest only period provided
Commercial mortgage	2	$	403		—	$	—			—	$	—			—	$	—
Other commercial real estate	—	—			—	—				1	2,994				—	—
Total interest only	2	403			—	—				1	2,994				—	—
Loan term extension
Construction and land development - commercial	1	100			—	—				—	—				—	—
Commercial mortgage	—	—			1	157				—	—				—	—
Residential mortgage	—	—			—	—				—	—				1	66
Total loan term extension	1	100			1	157				—	—				1	66
Below market interest rate
Construction and land development - commercial	—	—			—	—				3	17,615				3	7,050
Commercial mortgage	1	165			2	2,183				4	2,715				1	1,229
Commercial and industrial	—	—			—	—				1	253				—	—
Residential mortgage	1	100			—	—				3	2,542				3	122
Total below market interest rate	2	265			2	2,183				11	23,125				7	8,401
Other concession
Residential mortgage	—	—			—	—				—	—				1	54
Total other concession	—	—			—	—				—	—				1	54
Total restructurings	5	$	768		3	$	2,340			12	$	26,119			9	$	8,521
For the three months ended December 31, 2013, the recorded investment in troubled debt restructurings subsequent to modification was not materially impacted by the modification since forgiveness of principal is not a restructuring option frequently used by BancShares.
The following tables provide the types of TDRs made during the twelve months ended December 31, 2013, and 2012, as well as a summary of loans that were modified as a TDR during the 12 months ended December 31, 2013, and 2012 that subsequently defaulted during the
twelve months ended December 31, 2013, and 2012. BancShares defines payment default as movement of the TDR to nonaccrual status, foreclosure or charge-off, whichever occurs first.
	Year ended December 31, 2013									Year ended December 31, 2012
	All restructurings				Restructurings with payment default					All restructurings					Restructurings with payment default
	Number of Loans	Recorded investment at period end			Number of Loans	Recorded investment at period end				Number of Loans	Recorded investment at period end				Number of Loans	Recorded investment at period end
	(dollars in thousands)
Originated loans
Interest only period provided
Construction and land development - commercial	—	$	—		—	$	—			2	$	316			—	$	—
Commercial mortgage	6	1,520			1	—				12	3,891				3	1,440
Commercial and industrial	2	397			—	—				2	574				—	—
Other commercial real estate	1	—			—	—				—	—				—	—
Residential mortgage	1	630			—	—				2	893				2	893
Total interest only	10	2,547			1	—				18	5,674				5	2,333
Loan term extension
Construction and land development - commercial	—	—			—	—				2	7,667				—	—
Commercial mortgage	9	3,270			—	—				50	16,818				13	3,456
Other commercial real estate	—	—			—	—				3	1,318				—	—
Commercial and industrial	1	47			—	—				11	1,363				4	169
Lease financing	—	—			—	—				3	166				—	—
Residential mortgage	11	539			—	—				9	521				2	155
Construction and land development - noncommercial	—	—			—	—				1	158				—	—
Consumer	2	62			—	—				7	1,132				—	—
Total loan term extension	23	3,918			—	—				86	29,143				19	3,780
Below market interest rate
Construction and land development - commercial	3	609			—	—				1	227				—	—
Commercial mortgage	28	10,873			1	295				12	7,333				1	490
Commercial and industrial	3	851			—	—				11	1,584				1	—
Other commercial real estate	2	378			—	—				—	—				—	—
Residential mortgage	21	1,235			—	—				13	1,887				5	828
Revolving mortgage	13	801			3	451				1	48				1	48
Construction & land development - noncommercial	4	269			—	—				—	—				—	—
Consumer	3	219			—	—				4	17				1	—
Total below market interest rate	77	15,235			4	746				42	11,096				9	1,366
Discharged from bankruptcy
Residential mortgage	7	510			2	60				—	—				—	—
Revolving mortgage	31	2,577			6	274				—	—				—	—
Total discharged from bankruptcy	38	3,087			8	334				—	—				—	—
Other concession
Commercial mortgage	—	—			—	—				3	1,036				—	—
Residential mortgage	—	—			—	—				1	384				—	—
Total other concession	—	—			—	—				4	1,420				—	—
Total originated restructurings	148	$	24,787		13	$	1,080			150	$	47,333			33	$	7,479
	Year ended December 31, 2013									Year ended December 31, 2012
	All restructurings				Restructurings with payment default					All restructurings					Restructurings with payment default
	Number of Loans	Recorded investment at period end			Number of Loans	Recorded investment at period end				Number of Loans	Recorded investment at period end				Number of Loans	Recorded investment at period end
	(dollars in thousands)
Acquired loans
Interest only period provided
Construction and land development - commercial	1	$	2,590		1	$	2,590			2	$	496			1	$	356
Commercial mortgage	5	2,880			1	299				4	10,404				1	234
Other commercial real estate	—	—			—	—				1	2,994				—	—
Commercial and industrial	1	21			—	—				1	170				—	—
Residential mortgage	1	39			—	—				1	98				—	—
Total interest only	8	5,530			2	2,889				9	14,162				2	590
Loan term extension
Construction and land development - commercial	6	2,247			—	—				9	7,294				1	3,703
Commercial mortgage	1	157			1	157				4	2,584				—	—
Commercial and industrial	2	1,080			—	—				2	158				—	—
Residential mortgage	3	5,153			2	5,120				4	5,111				2	4,629
Total loan term extension	12	8,637			3	5,277				19	15,147				3	8,332
Below market interest rate
Construction and land development - commercial	2	106			—	—				13	19,953				5	8,781
Commercial mortgage	12	7,513			4	2,418				18	19,100				6	3,906
Other commercial real estate	—	—			—	—				2	1,954				—	—
Commercial and industrial	2	493			—	—				5	1,299				2	—
Residential mortgage	10	2,088			5	1,475				21	4,622				10	490
Construction and land development - noncommercial	—	—			—	—				1	—				1	—
Total below market interest rate	26	10,200			9	3,893				60	46,928				24	13,177
Other concession
Commercial mortgage	1	110			—	—				—	—				—	—
Residential mortgage	—	—			—	—				1	54				1	54
Total other concession	1	110			—	—				1	54				1	54
Total acquired restructurings	47	$	24,477		14	$	12,059			89	$	76,291			30	$	22,153
The following tables provide information on originated impaired loans and leases, exclusive of loans and leases evaluated collectively as a homogeneous group, including interest income recognized in the period during which the loans and leases were considered impaired.
	With a			With no				Total				Unpaid				Related
	recorded			recorded								principal				allowance
	allowance			allowance								balance				recorded
	(dollars in thousands)
December 31, 2013
Impaired originated loans and leases
Construction and land development - commercial	$	1,025		$	1,247			$	2,272			$	7,306			$	103
Commercial mortgage	57,819			39,292				97,111				103,522				6,873
Other commercial real estate	783			1,095				1,878				2,279				209
Commercial and industrial	7,197			2,103				9,300				10,393				771
Lease financing	133			55				188				188				54
Residential mortgage	11,534			4,005				15,539				15,939				1,586
Revolving mortgage	3,382			214				3,596				3,596				372
Construction and land development - noncommercial	651			457				1,108				1,108				72
Consumer	1,154			—				1,154				1,154				121
Total impaired originated loans and leases	$	83,678		$	48,468			$	132,146			$	145,485			$	10,161
December 31, 2012
Impaired originated loans and leases
Construction and land development - commercial	$	5,941		$	11,134			$	17,075			$	32,898			$	2,469
Commercial mortgage	39,648			94,156				133,804				136,743				11,697
Other commercial real estate	1,425			1,950				3,375				3,475				298
Commercial and industrial	7,429			15,190				22,619				22,619				2,133
Lease financing	665			139				804				804				202
Other	—			707				707				707				53
Residential mortgage	9,346			6,490				15,836				16,229				959
Revolving mortgage	1,238			2,965				4,203				4,203				1
Construction and land development - noncommercial	1,162			159				1,321				1,321				287
Consumer	1,609			900				2,509				2,509				256
Nonspecific	—			—				—				—				—
Total impaired originated loans and leases	$	68,463		$	133,790			$	202,253			$	221,508			$	18,355
	YTD			YTD Interest Income Recognized
	Average
	Balance
	(dollars in thousands)
Year ended December 31, 2013
Originated impaired loans and leases:
Construction and land development - commercial	$	6,414		$	270
Commercial mortgage	105,628			5,702
Other commercial real estate	2,658			144
Commercial and industrial	12,772			642
Lease financing	350			22
Other	—			—
Residential mortgage	15,470			444
Revolving mortgage	5,653			485
Construction and land development - noncommercial	958			55
Consumer	1,427			53
Total originated impaired loans and leases	$	151,330		$	7,817
Year ended December 31, 2012
Originated impaired loans and leases:
Construction and land development - commercial	$	22,493		$	399
Commercial mortgage	96,082			4,630
Other commercial real estate	2,690			142
Commercial and industrial	13,658			788
Lease financing	497			37
Other	424			23
Residential mortgage	14,951			586
Revolving mortgage	2,931			68
Construction and land development - noncommercial	2,850			41
Consumer	1,850			21
Total originated impaired loans and leases	$	158,426		$	6,735
Year ended December 31, 2011
Originated impaired loans and leases:
Construction and land development - commercial	$	26,612		$	56
Commercial mortgage	65,729			1,330
Other commercial real estate	1,368			55
Commercial and industrial	12,984			456
Lease financing	587			21
Other	38			—
Residential mortgage	9,252			300
Revolving mortgage	—			—
Construction and land development - noncommercial	2,022			105
Consumer	636			18
Total originated impaired loans and leases	$	119,228		$	2,341

Premises_and_Equipment_Notes

Premises and Equipment (Notes)	12 Months Ended
	Dec. 31, 2013
Property, Plant and Equipment [Abstract]	'
PREMISES and EQUIPMENT	'
	PREMISES AND EQUIPMENT
	Major classifications of premises and equipment at December 31, 2013, and 2012, are summarized as follows:
		2013		2012
		(dollars in thousands)
	Land	$	204,259	$	202,168
	Premises and leasehold improvements	875,511		840,149
	Furniture and equipment	394,348		390,345
	Total	1,474,118		1,432,662
	Less accumulated depreciation and amortization	597,596		549,894
	Total premises and equipment	$	876,522	$	882,768
	There were no premises pledged to secure borrowings at December 31, 2013, and 2012.
	BancShares leases certain premises and equipment under various lease agreements that provide for payment of property taxes, insurance and maintenance costs. Operating leases frequently provide for one or more renewal options on the same basis as current rental terms. However, certain leases require increased rentals under cost of living escalation clauses. Some leases also provide purchase options.
	Future minimum rental commitments for noncancellable operating leases with initial or remaining terms of one or more years consisted of the following at December 31, 2013:
	Year ended December 31
	(dollars in thousands)
	2014	$	17,181
	2015	13,004
	2016	8,539
	2017	5,969
	2018	4,574
	Thereafter	41,554
	Total minimum payments	$	90,821
	Total rent expense for all operating leases amounted to $21.4 million in 2013, $23.6 million in 2012 and $24.7 million in 2011, net of rent income, which totaled $1.8 million, $1.7 million and $1.7 million during 2013, 2012 and 2011, respectively.

Other_Real_Estate_Owned

Other Real Estate Owned	12 Months Ended
	Dec. 31, 2013
Banking and Thrift [Abstract]	'
Other Real Estate Owned	'
	OTHER REAL ESTATE OWNED
	The following table explains changes in other real estate owned during 2013 and 2012.
		Covered			Noncovered			Total
		(dollars in thousands)
	Balance at January 1, 2012	$	148,599		$	50,399		$	198,998
	Additions	105,059			35,586			140,645
	Sales	(124,435		)	(33,564		)	(157,999		)
	Writedowns	(26,646		)	(8,908		)	(35,554		)
	Balance at December 31, 2012	102,577			43,513			146,090
	Additions	59,034			33,908			92,942
	Sales	(96,744		)	(36,168		)	(132,912		)
	Writedowns	(17,786		)	(4,355		)	(22,141		)
	Balance at December 31, 2013	$	47,081		$	36,898		$	83,979

Receivable_from_FDIC_for_Loss_

Receivable from FDIC for Loss Share Agreements	12 Months Ended
	Dec. 31, 2013
Receivable From FDIC For Loss Share Agreements [Abstract]	'
Receivable from FDIC for Loss Share Agreements	'
	RECEIVABLE FROM THE FDIC FOR LOSS SHARE AGREEMENTS
	The following table presents the changes in the receivable for loss share agreements:
		Year ended December 31
		2013			2012			2011
		(dollars in thousands)
	Balance at January 1	$	270,192		$	617,377		$	671,023
	Additional receivable from acquisitions	—			—			316,932
	Amortization of discounts and premiums, net	(85,651		)	(102,394		)	(32,960		)
	Cash payments from FDIC	(19,373		)	(251,972		)	(293,067		)
	Post-acquisition and other adjustments, net	(71,771		)	7,181			(44,551		)
	Balance at December 31	$	93,397		$	270,192		$	617,377
	The receivable from the FDIC for loss share agreements is measured separately from the related covered assets and is recorded at fair value at the acquisition date using projected cash flows related to the loss share agreements based on the expected reimbursements for losses and the applicable loss share percentages. See Note T for information related to BancShares' recorded payable to the FDIC for loss share agreements.
	Post-acquisition adjustments represent the net change in loss estimates related to acquired loans and covered OREO as a result of changes in expected cash flows and the allowance for loan and lease losses related to those covered loans. For loans covered by loss share agreements, subsequent decreases in the amount expected to be collected from the borrower or collateral liquidation result in a provision for loan and lease losses, an increase in the allowance for loan and lease losses and a proportional adjustment to the receivable from the FDIC for the estimated amount to be reimbursed. Subsequent increases in the amount expected to be collected from the borrower or collateral liquidation result in the reversal of any previously recorded provision for loan and lease losses and related allowance for loan and lease losses and adjustments to the receivable from the FDIC, or prospective adjustment to the accretable yield and the related receivable from the FDIC if no provision for loan and lease losses had been recorded previously. Other adjustments include those resulting from unexpected recoveries of amounts previously charged off.

Mortgage_Servicing_Rights_Note

Mortgage Servicing Rights (Notes)	12 Months Ended
	Dec. 31, 2013
Mortgage Banking [Abstract]	'
Transfers and Servicing of Financial Assets [Text Block]	'
	MORTGAGE SERVICING RIGHTS
	Mortgage servicing rights totaled $16,000 and $1.8 million at December 31, 2013, and 2012, respectively. During 2013, BancShares sold substantially all of its servicing asset. During 2011, BancShares acquired the rights to service mortgage loans that had previously been sold by United Western. The acquired asset was recorded at its fair value and amortized over the remaining estimated servicing life, which was estimated to be 60 months as of the acquisition date. BancShares does not hedge its mortgage servicing asset.

Deposits

Deposits	12 Months Ended
	Dec. 31, 2013
Deposits [Abstract]	'
Deposits	'
	DEPOSITS
	Deposits at December 31 are summarized as follows:
		2013		2012
		(dollars in thousands)
	Demand	$	5,241,817	$	4,885,700
	Checking With Interest	2,445,972		2,363,317
	Money market accounts	6,306,942		6,357,309
	Savings	1,004,097		905,456
	Time	2,875,238		3,574,243
	Total deposits	$	17,874,066	$	18,086,025
	Time deposits with a minimum denomination of $100,000 totaled $1.27 billion and $1.61 billion at December 31, 2013, and 2012, respectively.
	At December 31, 2013, the scheduled maturities of time deposits were:
	Year	Scheduled maturities
		(dollars in thousands)
	2014	$	1,920,998
	2015	532,711
	2016	296,073
	2017	87,179
	2018	38,277
	Thereafter	—
	Total time deposits	$	2,875,238

ShortTerm_Borrowings

Short-Term Borrowings	12 Months Ended
	Dec. 31, 2013
Short-term Debt [Abstract]	'
Short-term Borrowings	'
	SHORT-TERM BORROWINGS
	Short-term borrowings at December 31 are as follows:
		2013		2012
		(dollars in thousands)
	Master notes	$	411,907	$	399,047
	Repurchase agreements	96,960		111,907
	Notes payable to Federal Home Loan Banks	—		55,000
	Federal funds purchased	2,551		2,551
	Total short-term borrowings	$	511,418	$	568,505
	At December 31, 2013, BancShares and FCB had unused credit lines allowing contingent access to overnight borrowings of up to $665.0 million on an unsecured basis. Additionally, under borrowing arrangements with the Federal Home Loan Bank of Atlanta, FCB has access to an additional $1.14 billion on a secured basis.

LongTerm_Obligations

Long-Term Obligations	12 Months Ended
	Dec. 31, 2013
LONG-TERM OBLIGATIONS [Abstract]	'
Long-term Obligations	'
	LONG-TERM OBLIGATIONS
	Long-term obligations at December 31 include:
		2013		2012
		(dollars in thousands)
	Junior subordinated debenture at 3-month LIBOR plus 1.75 percent maturing June 30, 2036	96,392		96,392
	Subordinated notes payable at 5.125 percent maturing June 1, 2015	125,000		125,000
	Obligations under capitalized leases extending to June 2026	6,515		10,020
	Notes payable to Federal Home Loan Bank of Atlanta with rates ranging from 2.00 percent to 3.88 percent and maturing through September 2021	240,283		170,299
	Note payable to the Federal Home Loan Bank of Seattle with a rate of 4.74 percent and a maturity date of July 2017	10,000		10,000
	Unamortized acquisition accounting adjustments	2,449		3,069
	Other long-term debt	30,130		30,141
	Total long-term obligations	$	510,769	$	444,921
	Long-term obligations maturing in each of the five years subsequent to December 31, 2013, include:
	Year	Scheduled maturities
	(dollars in thousands)
	2014	$	2,908
	2015	205,422
	2016	—
	2017	11,005
	2018	121,444
	Thereafter	169,990
	Total long-term obligations	$	510,769

Estimated_Fair_Values

Estimated Fair Values	12 Months Ended
	Dec. 31, 2013
Fair Value Disclosures [Abstract]	'
Estimated Fair Values	'
	ESTIMATED FAIR VALUES
	Fair value estimates are intended to represent the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants as of the measurement date. Where there is no active market for a financial instrument, BancShares has made estimates using discounted cash flow or other valuation techniques. Inputs to these valuation methods are subjective in nature, involve uncertainties and require significant judgment and therefore cannot be determined with precision. Accordingly, the derived fair value estimates presented below are not necessarily indicative of the amounts BancShares could realize in a current market exchange.
	Assets and liabilities are recorded at fair value according to a fair value hierarchy comprised of three levels. The levels are based on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to determine fair value. The level of an asset or liability within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement (with level 1 considered highest and level 3 considered lowest). A brief description of each level follows:
	•	Level 1 values are based on quoted prices for identical instruments in active markets.
	•	Level 2 values are based on quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active and model-based valuation techniques for which all significant assumptions are observable in the market.
	•	Level 3 values are generated from model-based techniques that use at least one significant assumption not observable in the market. These unobservable assumptions reflect estimates that market participants would use in pricing the asset or liability. Valuation techniques include the use of discounted cash flow models and similar techniques.
	The methodologies used to estimate the fair value of financial assets and financial liabilities are discussed below:
	Investment securities. U.S.Treasury, government agency, mortgage-backed securities and state, county and municipal securities are measured at fair value using significant observable inputs such as benchmark yields, reported trades, broker/dealer quotes, issuer spreads, benchmark securities and bids/offers. The inputs used for these securities are considered level 2 inputs. Equity securities are measured at fair value using observable closing prices. Management also considers the level of market activity by examining the trade volume of each security. Due to the relatively inactive nature of the markets, the inputs used for these securities are considered level 2 inputs.
	Loans held for sale. Fair value for loans held for sale is generally based on market prices for loans with similar characteristics or external valuations. The inputs used in the fair value measurements for loans held for sale are considered level 2 inputs.
	Loans and leases (acquired and originated). For variable rate loans, carrying value is a reasonable estimate of fair value. For fixed rate loans, fair values are estimated based on discounted future cash flows using the current interest rates at which loans with similar terms would be made to borrowers of similar credit quality. Additional valuation adjustments are made for liquidity and credit risk. The inputs used in the fair value measurements for loans and leases are considered level 3 inputs.
	Receivable from the FDIC for loss share agreements. Fair value is estimated based on discounted future cash flows using current discount rates. Due to post-acquisition improvements in expected losses, significant portions of the FDIC receivable will be recovered through amortization of the receivable over the remaining life of the loss share agreement rather than by cash flows from the FDIC. The estimated amounts to be amortized in future periods have no fair value. The inputs used in the fair value measurements for the FDIC receivable are considered level 3 inputs. The FDIC loss share agreements are not transferable and, accordingly, there is no market for this receivable.
	FHLB stock. The carrying amount of FHLB stock is a reasonable estimate of fair value as these securities are not readily marketable and are evaluated for impairment based on the ultimate recoverability of the par value. BancShares considers positive and negative evidence, including the profitability and asset quality of the issuer, dividend payment history and recent redemption experience, when determining the ultimate recoverability of the par value. BancShares believes its investment in FHLB stock is ultimately recoverable at par.
	Preferred stock issued under the TARP program. Preferred securities issued under the Troubled Asset Recovery Program are recorded at cost and are evaluated quarterly for impairment based on the ultimate recoverability of the purchase price. The fair value of these securities is derived from a third-party proprietary model that is considered to be a level 3 input.
	Deposits. For non-time deposits and variable rate time deposits, carrying value is a reasonable estimate of fair value. The fair value of fixed rate time deposits is estimated by discounting future cash flows using the interest rates currently offered for deposits of similar remaining maturities. The inputs used in the fair value measurements for deposits are considered level 2 inputs.
	Long-term obligations. For fixed rate trust preferred securities, the fair values are determined based on recent trades of the actual security. For other long-term obligations, fair values are estimated by discounting future cash flows using current interest rates for similar financial instruments. The inputs used in the fair value measurements for long-term obligations are considered level 2 inputs.
	Payable to the FDIC for loss share agreements. The fair value of the payable to the FDIC for loss share agreements is determined by the projected cash flows based on expected payments to the FDIC in accordance with the loss share agreements. Cash flows are discounted to reflect the timing of the estimated amounts due to the FDIC. The inputs used in the fair value measurements for the payable to the FDIC are considered level 3 inputs. See Note T for more information on the payable to the FDIC.
	Interest rate swap. Under the terms of the existing cash flow hedge, BancShares pays a fixed payment to the counterparty in exchange for receipt of a variable payment that is determined based on the three-month LIBOR rate. The fair value of the cash flow hedge is, therefore, based on projected LIBOR rates for the duration of the hedge, values that, while observable in the market, are subject to adjustment due to pricing considerations for the specific instrument. If the fair value of the swap is a net asset, the risk of default by the counterparty is considered in the determination of fair value and is considered a level 3 input. The inputs used in the fair value measurements of the interest rate swap are considered level 2 inputs.
	Off-balance-sheet commitments and contingencies. Carrying amounts are reasonable estimates of the fair values for such financial instruments. Carrying amounts include unamortized fee income and, in some cases, reserves for any credit losses from those financial instruments. These amounts are not material to BancShares' financial position.
	For all other financial assets and financial liabilities, the carrying value is a reasonable estimate of the fair value as of December 31, 2013, and December 31, 2012. The carrying value and fair value for these assets and liabilities are equivalent because they are relatively short term in nature and there is no interest rate or credit risk relating to them that would cause the fair value to differ from the carrying value.
		December 31, 2013				December 31, 2012
		Carrying value		Fair value		Carrying value		Fair value
		(dollars in thousands)
	Cash and due from banks	$	533,599	$	533,599	$	639,730	$	639,730
	Overnight investments	859,324		859,324		443,180		443,180
	Investment securities available for sale	5,387,703		5,387,703		5,226,228		5,226,228
	Investment securities held to maturity	907		974		1,342		1,448
	Loans held for sale	47,271		47,956		86,333		87,654
	Acquired loans, net of allowance for loan and lease losses	975,906		956,388		1,669,263		1,635,878
	Originated loans, net of allowance for loan and lease losses	11,924,424		11,589,149		11,397,069		11,238,597
	Receivable from the FDIC for loss share agreements (1)	93,397		38,438		270,192		100,161
	Income earned not collected	48,390		48,390		47,666		47,666
	Stock issued by:
	Federal Home Loan Bank of Atlanta	30,813		30,813		36,139		36,139
	Federal Home Loan Bank of San Francisco	5,756		5,756		10,107		10,107
	Federal Home Loan Bank of Seattle	4,250		4,250		4,410		4,410
	Preferred stock	33,564		34,786		40,768		40,793
	Deposits	17,874,066		17,898,570		18,086,025		18,126,893
	Short-term borrowings	511,418		511,418		568,505		568,505
	Long-term obligations	510,769		526,037		444,921		472,642
	Payable to the FDIC for loss share agreements	109,378		111,941		101,641		111,679
	Accrued interest payable	6,737		6,737		9,353		9,353
	Interest rate swap	7,220		7,220		10,398		10,398
	(1) The fair value of the FDIC receivable excludes receivable related to accretable yield to be amortized in prospective periods.
	Among BancShares’ assets and liabilities, investment securities available for sale and interest rate swaps accounted for as cash flow hedges are reported at their fair values on a recurring basis. Certain other assets are adjusted to their fair value on a nonrecurring basis, including loans held for sale, which are carried at the lower of cost or fair value. Impaired loans, OREO, goodwill and other intangible assets are periodically tested for impairment. Loans held for investment, deposits, short-term borrowings and long-term obligations are not reported at fair value. BancShares did not elect to voluntarily report any assets or liabilities at fair value.
	For assets and liabilities carried at fair value on a recurring basis, the following table provides fair value information as of December 31, 2013, and December 31, 2012.
				Fair value measurements using:
		Fair value		Level 1		Level 2		Level 3
		(dollars in thousands)
	December 31, 2013
	Assets measured at fair value
	Investment securities available for sale
	U.S. Treasury	$	373,437	$	—	$	373,437	$	—
	Government agency	2,544,229		—		2,544,229		—
	Mortgage-backed securities	2,446,873		—		2,446,873		—
	Equity securities	22,147		—		22,147		—
	State, county, municipal	187		—		187		—
	Other	830		—		830		—
	Total	$	5,387,703	$	—	$	5,387,703	$	—
	Liabilities measured at fair value
	Interest rate swaps accounted for as cash flow hedges	$	7,220	$	—	$	7,220	$	—
	December 31, 2012
	Assets measured at fair value
	Investment securities available for sale
U.S. Treasury	$	823,632	$	—	$	823,632	$	—
Government agency	3,055,204		—		3,055,204		—
Mortgage-backed securities	1,329,657		—		1,329,657		—
Equity securities	16,365		—		16,365		—
State, county, municipal	550		—		550		—
Other	820		—		820		—
Total	$	5,226,228	$	—	$	5,226,228	$	—
Liabilities measured at fair value
Interest rate swaps accounted for as cash flow hedges	$	10,398	$	—	$	10,398	$	—
During the third quarter of 2013, management reevaluated its fair value leveling methodology and the inputs utilized by the 3rd party pricing services for the current and prior periods. Management concluded that due to the reliance on significant observable inputs, the fair values of its U.S. Treasury, Government agency and other securities should be classified as level 2 rather than the level 1 previously disclosed. Management also concluded that its equity securities should be classified as level 2 rather than the level 1 previously disclosed due to the inactive nature of the markets in which these securities trade.
There were no transfers between levels during the years ended December 31, 2013, and 2012, other than the reclassification referenced above, which was made for all periods presented.
Certain financial assets and liabilities are carried at fair value on a nonrecurring basis. Loans held for sale are carried at the lower of aggregate cost or fair value and are, therefore, carried at fair value only when fair value is less than the asset cost. Certain impaired loans are also carried at fair value. Noncovered OREO that has been recently remeasured is deemed to be at fair value. For financial assets and liabilities carried at fair value on a nonrecurring basis, the following table provides fair value information as of December 31, 2013, and December 31, 2012.
			Fair value measurements using:
	Fair value		Level 1		Level 2		Level 3
	(dollars in thousands)
December 31, 2013
Loans held for sale	$	29,389	$	—	$	29,389	$	—
Originated impaired loans	73,517		—		—		73,517
Other real estate not covered under loss share agreements remeasured during current year	20,526		—		—		20,526
Other real estate covered under loss share agreements remeasured during current year	37,587		—		—		37,587
December 31, 2012
Loans held for sale	65,244		—		65,244		—
Originated impaired loans	51,644		—		—		51,644
Other real estate not covered under loss share agreements remeasured during current year	21,113		—		—		21,113
Other real estate covered under loss share agreements remeasured during current year	59,545		—		—		61,026
The value of loans held for sale are generally based on market prices for loans with similar characteristics or external valuations.
The value of impaired loans is determined by either collateral valuations or discounted present value of the expected cash flow calculations. Collateral values are determined using appraisals or other third-party value estimates of the subject property with discounts generally between 10 and 14 percent applied for estimated holding and selling costs and other external factors that may impact the marketability of the property. Impaired loans are assigned to an asset manager and monitored monthly for significant changes since the last valuation. If significant changes are noted, the asset manager orders a new valuation or adjusts the valuation accordingly. Expected cash flows are determined using expected loss rates developed from historic experience for loans with similar risk characteristics.
OREO is measured and reported at fair value using level 3 inputs for valuations based on unobservable criteria. The values of OREO are determined by collateral valuations. Collateral values are determined using appraisals or other third-party value estimates of the subject property with discounts generally between 10 and 14 percent applied for estimated holding and selling costs and other external factors that may impact the marketability of the property. Changes to the value of the assets between scheduled valuation dates are monitored through continued communication with brokers and monthly reviews by the asset manager assigned to each asset. The asset manager uses the information gathered from brokers and other market sources to identify any significant changes in the market or the subject property as they occur. Valuations are then adjusted or new appraisals are ordered to ensure the reported values reflect the most current information.
No financial liabilities were carried at fair value on a nonrecurring basis as of December 31, 2013, and December 31, 2012.

Employee_Benefit_Plans

Employee Benefit Plans	12 Months Ended
	Dec. 31, 2013
General Discussion of Pension and Other Postretirement Benefits [Abstract]	'
Employee Benefit Plans	'
	EMPLOYEE BENEFIT PLANS
	BancShares sponsors benefit plans for its qualifying employees including a noncontributory defined benefit pension plan, a 401(k) savings plan and an enhanced 401(k) savings plan. These plans are qualified under the Internal Revenue Code. BancShares also maintains agreements with certain executives that provide supplemental benefits that are paid upon death or separation from service at an agreed-upon age.
	Defined Benefit Pension Plan
	Employees who were hired prior to April 1, 2007, and who qualify under length of service and other requirements may participate in a noncontributory defined benefit pension plan (Plan). Under the Plan, benefits are based on years of service and average earnings. BancShares made no contributions to the plan during 2013 or 2012, and does not anticipate making any contribution during 2014.
	Obligations and Funded Status
	The following table provides the changes in benefit obligation and plan assets and the funded status of the plan at December 31, 2013, and 2012.
		2013				2012
		(dollars in thousands)
	Change in benefit obligation
	Benefit obligation at January 1	$	580,938			$	493,648
	Service cost	16,332				14,241
	Interest cost	23,686				23,711
	Actuarial (gain) loss	(74,060		)		64,540
	Benefits paid	(16,218		)		(15,202		)
	Benefit obligation at December 31	530,678				580,938
	Change in plan assets
	Fair value of plan assets at January 1	463,005				429,505
	Actual return on plan assets	77,230				48,702
	Employer contributions	—				—
	Benefits paid	(16,218		)		(15,202		)
	Fair value of plan assets at December 31	524,017				463,005
	Funded status at December 31	$	(6,661	)		$	(117,933	)
	The amounts recognized in the consolidated balance sheets as of December 31, 2013, and 2012, consist of:
		2013				2012
		(dollars in thousands)
	Other assets	$	—			$	—
	Other liabilities	(6,661		)		(117,933		)
	Net asset (liability) recognized	$	(6,661	)		$	(117,933	)
	The following table details the amounts recognized in accumulated other comprehensive income at December 31, 2013, and 2012:
		2013				2012
		(dollars in thousands)
	Net loss (gain)	$	16,605			$	157,147
	Less prior service cost	977				1,187
	Accumulated other comprehensive loss, excluding income taxes	$	17,582			$	158,334
	The following table provides expected amortization amounts for 2014.
		(dollars in thousands)
	Actuarial loss	$	6,184
	Prior service cost	210
	Total	$	6,394
	The accumulated benefit obligation for the plan at December 31, 2013, and 2012, equaled $448.7 million and $485.6 million, respectively. The Plan uses a measurement date of December 31.
	The projected benefit obligation exceeded the fair value of plan assets as of December 31, 2013, and 2012. The fair value of plan assets exceeded the accumulated benefit obligation as of December 31, 2013. The accumulated benefit obligation exceeded the fair value of plan assets as of December 31, 2012.
	The following table shows the components of periodic benefit cost related to the pension plan and changes in plan assets and benefit obligations recognized in other comprehensive income for the years ended December 31, 2013, 2012, and 2011.
		Year ended December 31
		2013				2012				2011
		(dollars in thousands)
	Service cost	$	16,332			$	14,241			$	13,265
	Interest cost	23,686				23,711				23,810
	Expected return on assets	(27,733		)		(28,478		)		(29,184		)
	Amortization of prior service cost	210				210				210
	Amortization of net actuarial loss	16,985				11,026				6,861
	Total net periodic benefit cost	29,480				20,710				14,962
	Current year actuarial (loss) gain	(123,557		)		44,315				58,630
	Amortization of actuarial loss	(16,985		)		(11,026		)		(6,861		)
	Amortization of prior service cost	(210		)		(210		)		(210		)
	Total recognized in other comprehensive income	(140,752		)		33,079				51,559
	Total recognized in net periodic benefit cost and other comprehensive income	$	(111,272	)		$	53,789			$	66,521
	The assumptions used to determine the benefit obligations as of December 31, 2013, and 2012, are as follows:
		2013			2012
		(dollars in thousands)
	Discount rate	4.9	%		4	%
	Rate of compensation increase	4			4
	The assumptions used to determine the net periodic benefit cost for the years ended December 31, 2013, 2012, and 2011, are as follows:
		2013			2012			2011
	(dollars in thousands)
Discount rate	4	%		4.75	%		5.5	%
Rate of compensation increase	4			4			4.5
Expected long-term return on plan assets	7.25			7.5			7.75
The estimated discount rate, which represents the interest rate that could be obtained for a suitable investment used to fund the benefit obligations, is based on a yield curve developed from high-quality corporate bonds across a full maturity spectrum. The projected cash flows of the pension plan are discounted based on this yield curve and a single discount rate is calculated to achieve the same present value.
The estimated long-term rate of return on plan assets is used to calculate the value of plan assets over time. The methodology utilized to establish the estimated long-term rate of return on plan assets considers the actual return on plan assets for various time horizons since 1999 as a predictor of probable future returns. Historical returns are modified as appropriate by estimates of future market conditions that may positively or negatively affect estimated future returns. The return on plan assets for the 15-year, 10-year and 5-year periods ended December 31, 2013, equaled 6.99 percent, 8.39 percent and 13.37 percent, respectively. Based on expectations of modest returns over the next several years, the assumed rate of return for 2013 was 7.25 percent compared to 7.50 percent in 2012.
Plan Assets
BancShares' primary total return objective is to achieve returns that, over the long term, will fund retirement liabilities and provide for the desired plan benefits in a manner that satisfies the fiduciary requirements of the Employee Retirement Income Security Act. The plan assets have a long-term time horizon that runs concurrent with the average life expectancy of the participants. As such, the Plan can assume a time horizon that extends well beyond a full market cycle and can assume a reasonable level of risk. It is expected, however, that both professional investment management and sufficient portfolio diversification will smooth volatility and help to generate a reasonable consistency of return. The investments are broadly diversified among economic sector, industry, quality and size in order to reduce risk and to produce incremental return. Within approved guidelines and restrictions, the investment manager has discretion over the timing and selection of individual investments. Plan assets are currently held by FCB Trust Department.
The fair values of pension plan assets at December 31, 2013, and 2012, by asset class are as follows:
Asset Class	Market Value				Quoted prices in				Significant			Significant		Target Allocation	Actual %
					Active Markets				Observable			Nonobservable			of Plan
					for Identical				Inputs			Inputs			Assets
					Assets (Level 1)				(Level 2)			(Level 3)
	(dollars in thousands)
December 31, 2013
Cash and equivalents	$	2,517			$	2,517			$	—		$	—	0 - 1%	1	%
Equity securities														55 - 65%	62	%
Large cap	218,023				218,023				—			—
Mid cap	10,724				10,724				—			—
Small cap	43,928				43,928				—			—
International equity (developed)	10,535				10,535				—			—
International equity (emerging)	40,643				40,643				—			—
Fixed income									—			—		25-40%	28	%
Investment grade bonds	74,501				—				74,501			—
Intermediate bonds	48,746				—				48,746			—
High-yield corporate bonds	10,111				—				10,111			—
TIPS	4,395				4,395				—			—
International emerging bond	10,119				—				10,119			—
Alternative investments														0-10%	10	%
Commodities	19,014				19,014				—			—
Hedge fund composite	30,761				30,761							—
Total pension assets	$	524,017			$	380,540			$	143,477		$	—		100	%
December 31, 2012
Cash and equivalents	$	3,088			$	3,088			—			—		0 - 1%	1	%
Equity securities														55 - 65%	56	%
Large cap	172,512				172,512				—			—
Mid cap	21,451				21,451				—			—
Small cap	31,053				31,053				—			—
International equity (developed)	9,537				9,537				—			—
International equity (emerging)	24,276				24,276				—			—
Fixed income														36-44%	36	%
Investment grade bonds	71,986				—				71,986			—
Intermediate bonds	59,052				—				59,052			—
High-yield corporate bonds	18,487				—				18,487			—
TIPS	7,613				7,613				—			—
International emerging bond	9,348				—				9,348			—
Alternative investments					—				—			—		0-8%	8	%
Commodities	17,376				17,376				—			—
Hedge fund composite	17,226				17,226							—
Total pension assets	$	463,005			$	304,132			$	158,873		$	—		100	%
Cash Flows
BancShares anticipates making no contributions to the pension plan during 2014. Following are estimated payments to pension plan participants in the indicated periods:
Year	Projected benefit payments
(dollars in thousands)
2014	$	18,070
2015	19,662
2016	21,484
2017	23,244
2018	24,937
2019-2023	150,638
401(k) Savings Plans
Certain employees enrolled in the defined benefit plan are also eligible to participate in a 401(k) savings plan after 31 days of service through deferral of portions of their salary. For employees who participate in the 401(k) savings plan who also continue to accrue additional years of service under the defined benefit plan, based on the employee’s contribution, BancShares matches up to 75 percent of the employee contribution.
At the end of 2007, current employees were given the option to continue to accrue additional years of service under the defined benefit plan or to elect to join an enhanced 401(k) savings plan. Under the enhanced 401(k) savings plan, based on the employee’s contribution, BancShares matches up to 100 percent of the employee contribution. In addition to the employer match of the employee contributions, the enhanced 401(k) savings plan provides a guaranteed contribution to plan participants if they remain employed at the end of each calendar year. Employees who elected to enroll in the enhanced 401(k) savings plan discontinued the accrual of additional years of service under the defined benefit plan and became enrolled in the enhanced 401(k) savings plan effective January 1, 2008. Eligible employees hired after January 1, 2008, have the option to elect to participate in the enhanced 401(k) savings plan.
BancShares made participating contributions to both 401(k) plans totaling $14.9 million, $14.1 million and $13.6 million during 2013, 2012 and 2011, respectively.
Additional Benefits for Executives and Directors and Officers of Acquired Entities
FCB has entered into contractual agreements with certain executives that provide payments for a period of ten years following separation from service at an agreed-upon age. These agreements also provide a death benefit in the event a participant dies before the term of the agreement ends. FCB has also assumed liability for contractual obligations to directors and officers of previously-acquired entities.
The following table provides the accrued liability as of December 31, 2013, and 2012, and the changes in the accrued liability during the years then ended:
	2013				2012
	(dollars in thousands)
Present value of accrued liability as of January 1	$	25,851			$	25,586
Benefit expense	959				462
Benefits paid	(3,042		)		(3,241		)
Benefits forfeited	—				554
Interest cost	192				2,490
Present value of accrued liability as of December 31	$	23,960			$	25,851
Discount rate at December 31	4.9		%		4		%

Other_Noninterest_Income_and_O

Other Noninterest Income and Other Noninterest Expense	12 Months Ended
	Dec. 31, 2013
Noninterest Expense [Abstract]	'
Other Noninterest Income and Other Noninterest Expense	'
	OTHER NONINTEREST INCOME AND OTHER NONINTEREST EXPENSE
	Recoveries of acquired loans previously charged off are included within other noninterest income. These recoveries totaled $29.7 million, $10.5 million and $13.5 million for years ended December 31, 2013, 2012, and 2011, respectively.
	Other noninterest expense for the years ended December 31, 2013, 2012, and 2011, included the following:
		2013		2012		2011
		(dollars in thousands)
	Cardholder processing	$	9,892	$	11,816	$	11,418
	Merchant processing	35,279		33,313		37,196
	Collection	21,209		25,591		23,237
	Processing fees paid to third parties	15,095		14,454		16,336
	Cardholder reward programs	10,154		4,325		11,780
	Telecommunications	10,033		11,131		12,131
	Consultant	9,740		3,915		3,021
	Advertising	8,286		3,897		7,957
	Other	73,700		71,369		81,860
	Total other noninterest expense	$	193,388	$	179,811	$	204,936

Income_Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	INCOME TAXES
	At December 31, income tax expense consisted of the following:
		2013			2012			2011
		(dollars in thousands)
	Current tax expense
	Federal	$	41,996		$	85,875		$	108,639
	State	7,080			9,212			23,101
	Total current tax expense	49,076			95,087			131,740
	Deferred tax expense (benefit)
	Federal	38,974			(27,344		)	(12,127		)
	State	8,915			(7,921		)	(4,510		)
	Total deferred tax expense (benefit)	47,889			(35,265		)	(16,637		)
	Total income tax expense	$	96,965		$	59,822		$	115,103
	Income tax expense differed from the amounts computed by applying the federal income tax rate of 35 percent to pretax income as a result of the following:
		2013			2012			2011
		(dollars in thousands)
	Income taxes at statutory rates	$	92,633		$	67,959		$	108,546
	Increase (reduction) in income taxes resulting from:
	Nontaxable income on loans, leases and investments, net of nondeductible expenses	(1,185		)	(1,309		)	(1,481		)
	State and local income taxes, including change in valuation allowance, net of federal income tax benefit	10,397			839			12,084
	Tax credits	(5,569		)	(7,279		)	(5,166		)
	Other, net	689			(388		)	1,120
	Total income tax expense	$	96,965		$	59,822		$	115,103
	During the third quarter of 2013, BancShares adjusted its net deferred tax asset as a result of reductions in the North Carolina corporate income tax rate that were enacted July 23, 2013, and will become effective January 1, 2014, and January 1, 2015. The lower corporate income tax rate resulted in a reduction in the deferred tax asset and an increase in current period income tax expense. The lower effective tax rate for 2012 also reflects the impact of a $6.4 million credit to income tax expense resulting from the favorable outcome of state tax audits for the period 2008-2010, net of additional federal taxes.
	The net deferred tax asset included the following components at December 31:
		2013			2012
		(dollars in thousands)
	Allowance for loan and lease losses	$	90,790		$	124,928
	Pension liability	2,593			46,178
	Executive separation from service agreements	9,940			10,123
	State operating loss carryforward	79			652
	Unrealized loss on cash flow hedge	2,786			4,106
	Net unrealized loss on securities included in accumulated other comprehensive loss	6,541			—
	Other	17,884			19,465
	Deferred tax asset	130,613			205,452
	Accelerated depreciation	6,226			12,465
	Lease financing activities	10,216			10,366
	Net unrealized gains on securities included in accumulated other comprehensive loss	—			13,292
	Net deferred loan fees and costs	4,115			3,714
	Intangible asset	11,929			11,897
	Gain on FDIC-assisted transactions, deferred for tax purposes	57,895			29,694
	Other	6,352			5,373
	Deferred tax liability	96,733			86,801
	Net deferred tax asset	$	33,880		$	118,651
	No valuation allowance was necessary as of December 31, 2013, to reduce BancShares’ gross state deferred tax asset to the amount that is more likely than not to be realized.
	BancShares and its subsidiaries' federal income tax returns for 2010 through 2012 remain open for examination. Generally, the state jurisdictions in which BancShares files income tax returns are subject to examination for a period up to four years after returns are filed.
	Under GAAP, the benefit of a position taken or expected to be taken in a tax return should be recognized when it is more likely than not that the position will be sustained based on its technical merit. The liability for unrecognized tax benefits was not material at December 31, 2013, and 2012, and changes in the liability were not material during 2013, 2012 and 2011. BancShares does not expect the liability for unrecognized tax benefits to change significantly during 2014. BancShares recognizes interest and penalties, if any, related to income tax matters in income tax expense, and the amounts recognized during 2013, 2012 and 2011 were not material.

Transactions_with_Related_Pers

Transactions with Related Persons	12 Months Ended
	Dec. 31, 2013
Related Party Transactions [Abstract]	'
Transactions with related persons	'
	TRANSACTIONS WITH RELATED PERSONS
	BancShares and FCB have had, and expect to have in the future, banking transactions in the ordinary course of business with directors, officers and their associates (Related Persons) and entities that are controlled by Related Persons.
	For those identified as Related Persons as of December 31, 2013, the following table provides an analysis of changes in the loans outstanding during 2013:
		(dollars in thousands)
	Balance at January 1, 2013	$	1,311
	New loans	605
	Repayments	(91		)
	Balance at December 31, 2013	$	1,825
	Unfunded loan commitments available to Related Persons totaled $5.5 million and $4.4 million as of December 31, 2013, and 2012, respectively.
	During 2013, 2012 and 2011, fees from processing services included $21.6 million, $33.7 million and $34.5 million, respectively, for services rendered to entities controlled by Related Persons. The amounts recorded from the largest individual institution totaled $20.4 million, $22.8 million and $23.5 million for 2013, 2012 and 2011, respectively. Prior to 2013, BancShares provided various processing and operational services to other financial institutions, some of which are controlled by Related Persons. During the first quarter of 2013, BancShares sold its rights and most of its obligations under various service agreements with client banks, including two banks that are controlled by Related Persons. BancShares retained the processing services relationship with the largest client bank, which is controlled by Related Persons.
	Investment securities available for sale include an investment in a financial institution controlled by Related Persons. This investment had a carrying value of $21.6 million and $16.1 million at December 31, 2013, and 2012, respectively. The investment had a cost of $452,000 at December 31, 2013, and $452,000 at December 31, 2012.

Derivatives

Derivatives	12 Months Ended
	Dec. 31, 2013
Summary of Derivative Instruments [Abstract]	'
Derivatives	'
	DERIVATIVE
	At December 31, 2013, BancShares had an interest rate swap that qualifies as a cash flow hedge under GAAP. For all periods presented, the fair value of the outstanding derivative is included in other liabilities in the consolidated balance sheets, and the net change in fair value is included in the consolidated statements of cash flows under the caption net change in other liabilities.
	The following table provides the notional amount of the interest rate swap and the fair value of the liability as of December 31, 2013, and 2012.
		December 31, 2013				December 31, 2012
		Notional		Estimated fair value of liability		Notional		Estimated fair value of liability
		amount				amount
		(dollars in thousands)
	2011 interest rate swap hedging variable rate exposure on trust preferred securities 2011-2016	$	93,500	$	7,220	$	93,500	$	10,398
	The interest rate swap is used for interest rate risk management purposes and converts variable-rate exposure on outstanding debt to a fixed rate. The interest rate swap has a notional amount of $93.5 million, representing the amount of variable rate trust preferred capital securities issued during 2006 and still outstanding at the swap inception date. The interest rate swap hedges interest payments through June 2016 and requires fixed-rate payments by BancShares at 5.50 percent in exchange for variable-rate payments of 175 basis points above the three-month LIBOR, which is equal to the interest paid to the holders of the trust preferred capital securities. Settlement of the swap occurs quarterly. As of December 31, 2013, and 2012, collateral with a fair value of $7.0 million and $9.7 million, respectively, was pledged to secure the existing obligation under the interest rate swap.
	For cash flow hedges, the effective portion of the gain or loss due to changes in the fair value of the derivative hedging instrument is included in other comprehensive income (loss), while the ineffective portion, representing the excess of the cumulative change in the fair value of the derivative over the cumulative change in expected future discounted cash flows on the hedged transaction, is recorded in the consolidated income statement. BancShares’ interest rate swap has been fully effective since inception. Therefore, changes in the fair value of the interest rate swap have had no impact on net income. For the years ended December 31, 2013, 2012, and 2011, BancShares recognized interest expense of $3.3 million, $3.1 million and $4.6 million, respectively, resulting from incremental interest paid to the interest rate swap counterparty, none of which related to ineffectiveness.
	The estimated net amount in accumulated other comprehensive loss at December 31, 2013, that is expected to be reclassified into earnings within the next 12 months is a net after-tax loss of $1.9 million.
	BancShares monitors the credit risk of the interest rate swap counterparty.

Goodwill_and_Intangible_Assets

Goodwill and Intangible Assets	12 Months Ended
	Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]	'
Goodwill and Intangible Assets	'
	GOODWILL AND INTANGIBLE ASSETS
	There was no goodwill activity during 2013 and 2012. Goodwill totaled $102.6 million at December 31, 2013, and 2012, with no impairment recorded during 2013, 2012 and 2011.
	GAAP requires that goodwill be tested each year to determine if goodwill is impaired. The goodwill impairment test requires a two-step method to evaluate and calculate impairment. The first step requires estimation of the reporting unit’s fair value. If the fair value exceeds the carrying value, no further testing is required. If the carrying value exceeds the fair value, a second step is performed to determine whether an impairment charge must be recorded and, if so, the amount of such charge.
	BancShares performs annual impairment tests as of July 31 each year. After the first step for 2013 and 2012, no further analysis was required as there was no indication of impairment.
	The following information relates to other intangible assets, all of which are being amortized over their estimated useful lives:
		2013			2012
		(dollars in thousands)
	Balance at January 1	$	3,556		$	7,032
	Amortization	(2,309		)	(3,476		)
	Balance at December 31	$	1,247		$	3,556
	Intangible assets generated by FDIC-assisted transactions, which represent the estimated fair value of core deposits and other customer relationships that were acquired, are being amortized over a four-year life on an accelerated basis. The gross amount of other intangible assets and accumulated amortization as of December 31, 2013, and 2012, are:
		2013			2012
		(dollars in thousands)
	Gross balance	$	18,966		$	18,966
	Accumulated amortization	(17,719		)	(15,410		)
	Carrying value	$	1,247		$	3,556
	Based on current estimated useful lives and carrying values, BancShares anticipates amortization expense for intangible assets in subsequent periods will be:
	Year	Amortization expense
		(dollars in thousands)
	2014	$	1,122
	2015	125
		$	1,247

Shareholders_Equity_Dividends_

Shareholders' Equity, Dividends Restrictions and Other Regulatory Matters	12 Months Ended
	Dec. 31, 2013
Regulatory Capital Requirements [Abstract]	'
Shareholders' Equity, Dividend Restrictions and Other Regulatory Matters	'
	SHAREHOLDERS' EQUITY, DIVIDEND RESTRICTIONS AND OTHER REGULATORY MATTERS
	Various regulatory agencies have established guidelines that evaluate capital adequacy based on risk-weighted adjusted assets. An additional capital computation evaluates tangible capital based on tangible assets. Minimum capital requirements currently set forth by the regulatory agencies require a tier 1 capital ratio of no less than 4 percent of risk-weighted assets, a total capital ratio of no less than 8 percent of risk-weighted assets and a leverage capital ratio of no less than 3 percent of tangible assets. To meet the FDIC’s well-capitalized standards, the tier 1 and total capital ratios must be at least 6 percent and 10 percent, respectively, while the leverage ratio must equal 5 percent. Failure to meet minimum capital requirements may result in certain actions by regulators that could have a direct material effect on the consolidated financial statements.
	Based on the most recent notifications from its regulators, FCB is well-capitalized under the regulatory framework for prompt corrective action. Management believes that as of December 31, 2013, BancShares and FCB met all capital adequacy requirements to which they are subject and was not aware of any conditions or events that would affect FCB’s well-capitalized status.
	Following is an analysis of capital ratios for BancShares and FCB as of December 31, 2013, and 2012:
		December 31, 2013						December 31, 2012
		Amount		Ratio		Requirements to be well-capitalized		Amount		Ratio		Requirements to be well-capitalized
		(dollars in thousands)
	BancShares
	Tier 1 capital	$	2,109,139	14.92	%	6	%	$	1,949,985	14.27	%	6	%
	Total capital	2,320,792		16.42	%	10	%	2,179,370		15.95	%	10	%
	Leverage capital	2,109,139		9.82	%	5	%	1,949,985		9.23	%	5	%
	FCB
	Tier 1 capital	1,983,349		14.14	%	6	%	1,942,101		14.37	%	6	%
	Total capital	2,184,461		15.57	%	10	%	2,163,034		16	%	10	%
	Leverage capital	1,983,349		9.36	%	5	%	1,942,101		9.34	%	5	%
	As of December 31, 2013, BancShares had $93.5 million of trust preferred capital securities included in tier 1 capital. Beginning January 1, 2015, 75 percent of BancShares' trust preferred capital securities will be excluded from tier 1 capital, with the remaining 25 percent phased out January 1, 2016. Elimination of all trust preferred capital securities from the December 31, 2013, capital structure would result in a proforma tier 1 leverage capital ratio of 9.38 percent, a tier 1 risk-based capital ratio of 14.26 percent and a total risk-based capital ratio of 15.76 percent. On a proforma basis assuming disallowance of all trust preferred capital securities, BancShares and FCB continue to remain well-capitalized under current regulatory guidelines.
	Tier 2 capital of BancShares and FCB includes qualifying subordinated debt that was issued in 2005 with a scheduled maturity date of June 1, 2015. Under current regulatory guidelines, when subordinated debt is within five years of its scheduled maturity date, issuers must discount the amount included in tier 2 capital by 20 percent for each year until the debt matures. The amount of subordinated debt that qualifies as tier 2 capital totaled $25.0 million as of December 31, 2013, compared to $50.0 million at December 31, 2012. Subordinated debt will be completely removed from tier 2 capital in the second quarter of 2014, one year prior to the scheduled maturity of the subordinated debt.
	In July 2013, Bank regulatory agencies approved new global regulatory capital guidelines (Basel) aimed at strengthening existing capital requirements for bank holding companies through a combination of higher minimum capital requirements, new capital conservation buffers and more conservative definitions of capital and balance sheet exposure. When fully implemented in January 2019, the rule includes a minimum ratio of common equity tier 1 capital to risk-weighted assets of 4.5 percent and a common equity tier 1 capital conservation buffer of 2.5 percent of risk-weighted assets, totaling 7 percent. The rule also raises the minimum ratio of tier 1 capital to risk-weighted assets from 4 percent to 6 percent and includes a minimum leverage ratio of 4 percent.
	Additionally, trust preferred securities and cumulative preferred securities are required to be phased out of tier 1 capital by 2016. The inclusion of accumulated other comprehensive income in tier 1 common equity, as described in the proposed rules, is only applicable for institutions larger than $50 billion in assets.
	Management continues to monitor Basel developments and remains committed to managing capital levels in a prudent manner. BancShares' tier 1 common equity ratio based on the current tier 1 capital and risk-weighted assets calculations, excluding trust preferred securities, is 14.26 percent at December 31, 2013, compared to the fully phased-in Federal Reserve standards of 7.00 percent.
	BancShares has two classes of common stock—Class A common and Class B common. Shares of Class A common have one vote per share, while shares of Class B common have 16 votes per share.
	During the second quarter of 2013, BancShares' board granted authority to purchase up to 100,000 and 25,000 shares of Class A and Class B common stock, respectively, beginning on July 1, 2013, and continuing through June 30, 2014. As of December 31, 2013, no purchases had occurred pursuant to that authorization.
	During 2012, the Board of Directors granted authority to purchase up to 100,000 and 25,000 shares of Class A and Class B common stock, respectively, during the period from July 1, 2012, through June 30, 2013. That authority replaced similar plans approved by the Board during 2011 that were in effect during the twelve months preceding July 1, 2012. Pursuant to those plans, during 2012, BancShares purchased and retired an aggregate of 56,276 shares of Class A common stock and 100 shares of Class B common stock.
	Additionally, pursuant to separate authorizations, during 2012, BancShares purchased and retired 606,829 shares of Class B common stock in privately negotiated transactions, including purchases of 593,954 shares during December 2012 from a director and certain of her related interests. The December 2012 stock purchase was approved by BancShares' independent directors, after review and recommendation by a special committee of independent directors.
	The Board of Directors of FCB may declare a dividend on a portion of its undivided profits as it deems appropriate, subject to the requirements of the FDIC and the General Statutes of North Carolina, without prior regulatory approval. As of December 31, 2013, the amount was $1.41 billion. However, to preserve its well-capitalized status, the maximum amount of the dividend was limited to $781.3 million. Dividends declared by FCB amounted to $131.0 million in 2013, $179.6 million in 2012 and $82.8 million in 2011.
	BancShares and FCB are subject to various requirements imposed by state and federal banking statutes and regulations, including regulations requiring the maintenance of noninterest-bearing reserve balances at the Federal Reserve Bank. Banks are allowed to reduce the required balances by the amount of vault cash. For 2013, the requirements averaged $313.4 million.

Commitments_and_Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	COMMITMENTS AND CONTINGENCIES
	To meet the financing needs of its customers, BancShares and its subsidiaries have financial instruments with off-balance sheet risk. These financial instruments include commitments to extend credit, standby letters of credit and recourse obligations on mortgage loans sold. These instruments involve elements of credit, interest rate or liquidity risk.
	Commitments to extend credit are legally binding agreements to lend to customers. Commitments generally have fixed expiration dates or other termination clauses and may require payment of fees. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future liquidity requirements. Established credit standards control the credit risk exposure associated with these commitments. In some cases, BancShares requires that collateral be pledged to secure the commitment, including cash deposits, securities and other assets. At December 31, 2013, BancShares had unused commitments totaling $5.84 billion, compared to $5.47 billion at December 31, 2012.
	Standby letters of credit are commitments guaranteeing performance of a customer to a third party. Those guarantees are issued primarily to support public and private borrowing arrangements. To minimize its exposure, BancShares’ credit policies govern the issuance of standby letters of credit. At December 31, 2013, and 2012, BancShares had standby letters of credit amounting to $54.8 million and $63.1 million, respectively. The credit risk related to the issuance of these letters of credit is essentially the same as that involved in extending loans to clients and, therefore, these letters of credit are collateralized when necessary.
	Residential mortgage loans are sold with standard representations and warranties relating to documentation and underwriting requirements for the loans. If deficiencies are discovered at any point in the life of the loan, the investor may require BancShares to repurchase the loan. As of December 31, 2013, and 2012, other liabilities included a reserve of $3.6 million and $4.1 million, respectively, for estimated losses arising from the repurchase of loans under these provisions.
	In addition to standard representations and warranties, residential mortgage loans sold with limited recourse liability represent guarantees to repurchase the loans or repay a portion of the sale proceeds in the event of nonperformance by the borrower. The recourse period is generally 120 days or fewer after sale. At December 31, 2013, and 2012, BancShares has sold loans of approximately $156.1 million and $205.9 million, respectively, for which the recourse period had not yet elapsed.
	BancShares has recorded a receivable from the FDIC for the expected reimbursement of losses on assets covered under the various loss share agreements. These loss share agreements impose certain obligations on us that, in the event of noncompliance, could result in the delay or disallowance of some or all of our rights under those agreements. Requests for reimbursement are subject to FDIC review and may be delayed or disallowed for noncompliance. The loss share agreements are subject to interpretation by both the FDIC and FCB, and disagreements may arise regarding coverage of losses, expenses and contingencies.
	The loss share agreements for four FDIC-assisted transactions include provisions related to contingent payments that may be owed to the FDIC at the termination of the agreements (clawback liability).The clawback liability represents an estimated payment by BancShares to the FDIC if actual cumulative losses on acquired covered assets are lower than the cumulative losses originally estimated by the FDIC at the time of acquisition. The clawback liability is estimated by discounting estimated future payments and is recorded in the Consolidated Balance Sheets as a payable to the FDIC for loss share agreements. As of December 31, 2013, and 2012, the clawback liability was $109.4 million and $101.6 million, respectively.
	BancShares and various subsidiaries have been named as defendants in legal actions arising from their normal business activities in which damages in various amounts are claimed. BancShares is also exposed to litigation risk relating to the prior business activities of banks from which assets were acquired and liabilities assumed in the various FDIC-assisted transactions. Although the amount of any ultimate liability with respect to such matters cannot be determined, in the opinion of management, any such liability will not have a material effect on BancShares’ consolidated financial statements.

Accumulated_Other_Comprehensiv

Accumulated Other Comprehensive Loss	12 Months Ended
	Dec. 31, 2013
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]	'
Accumulated Other Comprehensive Loss	'
	ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)
	Accumulated other comprehensive income (loss) included the following as of December 31, 2013, and December 31, 2012:
		December 31, 2013										December 31, 2012
		Accumulated				Deferred			Accumulated			Accumulated			Deferred			Accumulated
		other				tax			other			other			tax			other
		comprehensive				benefit			comprehensive			comprehensive			expense			comprehensive
		loss							loss,			income (loss)			(benefit)			income (loss),
									net of tax									net of tax
		(dollars in thousands)
	Unrealized (losses) gains on investment securities available for sale	$	(16,632	)		$	(6,541	)	$	(10,091	)	$	33,809		$	13,292		$	20,517
	Unrealized loss on cash flow hedge	(7,220		)		(2,786		)	(4,434		)	(10,398		)	(4,106		)	(6,292		)
	Funded status of defined benefit plan	(17,582		)		(6,839		)	(10,743		)	(158,334		)	(62,003		)	(96,331		)
	Total	$	(41,434	)		$	(16,166	)	$	(25,268	)	$	(134,923	)	$	(52,817	)	$	(82,106	)
	The following table highlights changes in accumulated other comprehensive income (loss) by component for the years ended December 31, 2013, and 2012:
		Unrealized gains and losses on available-for-sale securities1				Gains and losses on cash flow hedges1			Defined benefit pension items1			Total
		(dollars in thousands)
	Balance at January 1, 2012	$	16,115			$	(6,483	)	$	(76,206	)	$	(66,574	)
	Other comprehensive income (loss) before reclassifications	5,807				(1,682		)	(26,961		)	(22,836		)
	Amounts reclassified from accumulated other comprehensive income (loss)	(1,405		)		1,873			6,836			7,304
	Net current period other comprehensive income (loss)	4,402				191			(20,125		)	(15,532		)
	Balance at December 31, 2012	20,517				(6,292		)	(96,331		)	(82,106		)
	Other comprehensive income (loss) before reclassifications	(30,608		)		(60		)	75,082			44,414
	Amounts reclassified from accumulated other comprehensive loss	—				1,918			10,506			12,424
	Net current period other comprehensive income (loss)	(30,608		)		1,858			85,588			56,838
	Balance at December 31, 2013	$	(10,091	)		$	(4,434	)	$	(10,743	)	$	(25,268	)
	1 All amounts are net of tax. Amounts in parentheses indicate debits.
	Details about accumulated other comprehensive loss		Amount reclassified from accumulated other comprehensive loss1				Affected line item in the statement where net income is presented
			(dollars in thousands)
	Year ended December 31, 2013
	Unrealized gains and losses on available for sale securities
			$	—			Securities gains (losses)
			—				Income taxes
			$	—			Net income
	Gains and losses on cash flow hedges
	Interest rate swap contracts		$	(3,281	)		Long-term obligations
			1,363				Income taxes
			$	(1,918	)		Net income
	Amortization of defined benefit pension items
	Prior service costs		$	(210	)		Employee benefits
	Actuarial losses		(16,985		)		Employee benefits
			(17,195		)		Income before income taxes
			6,689				Income taxes
			$	(10,506	)		Net income
	Total reclassifications for the period		$	(12,424	)
	Year ended December 31, 2012
	Unrealized gains and losses on available for sale securities
			$	2,322			Securities gains (losses)
			(917		)		Income taxes
			$	1,405			Net income
	Gains and losses on cash flow hedges
	Interest rate swap contracts		$	(3,095	)		Long-term obligations
			1,222				Income taxes
			$	(1,873	)		Net income
	Amortization of defined benefit pension items
	Prior service costs		$	(210	)		Employee benefits
	Actuarial losses		(11,026		)		Employee benefits
			(11,236		)		Income before income taxes
			4,400				Income taxes
			$	(6,836	)		Net income
	Total reclassifications for the period		$	(7,304	)
	1 Amounts in parentheses indicate debits to profit/loss.

Subsequent_Events_Notes

Subsequent Events (Notes)	12 Months Ended
	Dec. 31, 2013
Subsequent Events [Abstract]	'
Subsequent Events	'
	SUBSEQUENT EVENTS
	On January 1, 2014, FCB completed its merger with 1st Financial Services Corporation (1st Financial) of Hendersonville, NC and its wholly-owned subsidiary, Mountain 1st Bank & Trust Company (Mountain 1st). The merger allows FCB to expand its presence in Western North Carolina. Mountain 1st had 12 branches located in Asheville, Brevard, Columbus, Etowah, Fletcher, Forest City, Hendersonville, Hickory, Marion, Shelby and Waynesville. Following the merger, FCB applied for permission to close seven Mountain 1st branches due to their proximity to existing FCB branches. Once regulatory approvals have been received, customers have been notified and waiting periods have expired, Mountain 1st branches in Asheville, Brevard, Fletcher, Forest City, Hendersonville, Hickory and Marion will be closed, and customer relationships assigned to those branches will be transferred to the nearest FCB branch.
	First Citizens paid $10.0 million to acquire 1st Financial, including payments of $8.0 million to the U.S. Treasury to satisfy 1st Financial's Troubled Asset Relief Program (TARP) obligation and $2.0 million paid to the shareholders of 1st Financial.
	The 1st Financial merger was accounted for under the acquisition method of accounting. The purchased assets, assumed liabilities and identifiable intangible assets were recorded at their acquisition date estimated fair values. Fair values are subject to refinement for up to one year after the closing date of the transaction as additional information regarding closing date fair values becomes available.
	The following table provides the carrying value of acquired assets and assumed liabilities, as recorded by 1st Financial, the fair value adjustments calculated at the time of the acquisition, and the resulting fair value recorded by FCB.
		January 1, 2014
		As recorded by			Fair value adjustments			As recorded by FCB
		1st Financial
		(dollars in thousands)
	Assets
	Cash and cash equivalents	$	28,194		$	—		$	28,194
	Investment securities available for sale	246,890			(9,452		)	237,438
	Loans held for sale	1,183			—			1,183
	Restricted equity securities	3,105			671			3,776
	Loans	338,170			(21,843		)	316,327
	Less: allowance for loan losses	(7,796		)	7,796			—
	Premises and equipment	3,871			(1,185		)	2,686
	Other real estate owned	12,896			(1,305		)	11,591
	Intangible asset	—			3,780			3,780
	Other assets	16,811			(465		)	16,346
	Total assets acquired	$	643,324		$	(22,003	)	$	621,321
	Liabilities
	Deposits:
	Noninterest-bearing	$	152,444		$	—		$	152,444
	Interest-bearing	477,881			1,546			479,427
	Total deposits	630,325			1,546			631,871
	Federal Funds purchased	406			—			406
	Other liabilities	3,392			167			3,559
	Total liabilities assumed	634,123			1,713			635,836
	Net assets acquired	$	9,201		$	(23,716	)	(14,515		)
	Cash paid to shareholders							(2,000		)
	Cash paid to acquire TARP securities							(8,000		)
	Goodwill recorded for 1st Financial							$	(24,515	)
	Goodwill recorded for 1st Financial represents future revenues to be derived, including efficiencies that will result from combining operations, and other non-identifiable intangible assets. The 1st Financial transaction is a taxable asset acquisition, and goodwill resulting from the transaction is deductible for income tax purposes.
	Merger costs related to the 1st Financial transaction are estimated to be between $6.0 million and $7.0 million.
	All loans resulting from the 1st Financial transaction were considered to have deteriorated credit quality at the acquisition date, and are therefore accounted for under ASC 310-30.
	For loans acquired from 1st Financial, the contractually required payments including principal and interest, cash flows expected to be collected and fair values as of the acquisition date were:
		1-Jan-14
		(dollars in thousands)
	Contractually required payments	$	413,937
	Cash flows expected to be collected	400,326
	Fair value at acquisition date	316,327
	The recorded fair values of loans acquired in the 1st Financial transaction as of the acquisition date were as follows:
		1-Jan-14
		(dollars in thousands)
	Commercial:
	Construction and land development	$	41,516
	Commercial mortgage	123,925
	Other commercial real estate	6,698
	Commercial and industrial	29,126
	Total commercial loans	201,265
	Noncommercial:
	Residential mortgage	113,177
	Consumer	1,885
	Total noncommercial loans	115,062
	Total loans acquired from 1st Financial	$	316,327

Parent_Company_Financial_State

Parent Company Financial Statements	12 Months Ended
	Dec. 31, 2013
Condensed Financial Information of Parent Company Only Disclosure [Abstract]	'
Parent Company Financial Statements	'
	PARENT COMPANY FINANCIAL STATEMENTS
	Parent Company
	Condensed Balance Sheets
		December 31, 2013			December 31, 2012
		(dollars in thousands)
	Assets
	Cash	$	13,047		$	2,131
	Investment securities available for sale	234,488			237,765
	Investment in subsidiaries	2,058,505			1,969,600
	Due from subsidiaries	145,666			78,512
	Other assets	144,998			83,283
	Total assets	$	2,596,704		$	2,371,291
	Liabilities and Shareholders' Equity
	Short-term borrowings	$	411,907		$	399,047
	Long-term obligations	96,392			96,392
	Other liabilities	11,730			11,845
	Shareholders' equity	2,076,675			1,864,007
	Total liabilities and shareholders' equity	$	2,596,704		$	2,371,291
	Parent Company
	Condensed Income Statements
		Year ended December 31
		2013			2012			2011
		(dollars in thousands)
	Interest income	$	1,387		$	1,353		$	1,345
	Interest expense	7,065			15,435			21,512
	Net interest loss	(5,678		)	(14,082		)	(20,167		)
	Dividends from subsidiaries	131,006			179,588			82,812
	Other income	3,620			2,843			9,699
	Other operating expense	2,344			6,384			5,298
	Income before income tax benefit and equity in undistributed net income of subsidiaries	126,604			161,965			67,046
	Income tax benefit	(2,095		)	(8,417		)	(5,531		)
	Income before equity in undistributed net income of subsidiaries	128,699			170,382			72,577
	(Excess distributions) equity in undistributed net income of subsidiaries	39,000			(36,034		)	122,451
	Net income	$	167,699		$	134,348		$	195,028
	Parent Company
	Condensed Statements of Cash Flows
		Year ended December 31
		2013			2012			2011
		(dollars in thousands)
	OPERATING ACTIVITIES
	Net income	$	167,699		$	134,348		$	195,028
	Adjustments
	Excess distributions (undistributed) net income of subsidiaries	(39,000		)	36,034			(122,451		)
	Net amortization of premiums and discounts	334			439			203
	Gain on retirement of long term obligations	—			—			(9,685		)
	Securities gains	—			(2,274		)	(62		)
	Gain on sale of other assets	(1,331		)	—			—
	Other than temporary impairment on securities	—			45			26
	Change in other assets	(61,704		)	30,761			(20,951		)
	Change in other liabilities	(2,096		)	(10,148		)	(1,925		)
	Net cash provided by operating activities	63,902			189,205			40,183
	INVESTING ACTIVITIES
	Net change in due from subsidiaries	(67,154		)	42,323			146,463
	Purchases of investment securities	(126,197		)	(111,409		)	(220,387		)
	Proceeds from sales, calls, and maturities of securities	135,000			112,625			75,151
	Investment in subsidiaries	1,489			9,298			—
	Net cash (used) provided by investing activities	(56,862		)	52,837			1,227
	FINANCING ACTIVITIES
	Net change in short-term borrowings	12,860			23,651			4,046
	Retirement of long-term obligations	—			(155,305		)	(11,815		)
	Repurchase of common stock	(321		)	(103,624		)	(24,387		)
	Cash dividends paid	(8,663		)	(15,398		)	(12,499		)
	Net cash provided (used) by financing activities	3,876			(250,676		)	(44,655		)
Net change in cash	10,916			(8,634		)	(3,245		)
Cash balance at beginning of year	2,131			10,765			14,010
Cash balance at end of year	$	13,047		$	2,131		$	10,765
Cash payments for
Interest	$	6,904		$	25,574		$	20,677
Income taxes	102,890			66,453			91,465

Accounting_Policies_and_Basis_1

Accounting Policies and Basis of Presentation (Policies)	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
Pension and Other Postretirement Plans, Policy [Policy Text Block]	'
	Defined Benefit Pension Plan
	BancShares offers a noncontributory defined benefit pension plan to certain qualifying employees. The calculation of the obligations and related expenses under the plan requires the use of actuarial valuation methods and assumptions. Actuarial assumptions used in the determination of future values of plan assets and liabilities are subject to management judgment and may differ significantly if different assumptions are used. The discount rate assumption used to measure the plan obligation is based on a yield curve developed from high-quality corporate bonds across a full maturity spectrum. The projected cash flows of the pension plan are discounted based on this yield curve, and a single discount rate is calculated to achieve the same present value. Refer to Note M in the Consolidated Financial Statements for disclosures related to BancShares' defined benefit pension plan.
FDIC Indemnification Asset Text Block	'
	Covered Assets and Receivable from FDIC for Loss Share Agreements
	Assets subject to loss share agreements with the FDIC include certain acquired loans and OREO. These loss share agreements afford BancShares significant protection. The agreements cover realized losses on certain loans and other assets purchased from the FDIC during the time period specified in the agreements. Realized losses covered include loan contractual balances, accrued interest on loans for up to 90 days, the book value of foreclosed real estate acquired and certain direct costs, less cash or other consideration received by BancShares.
	The FDIC receivable is recorded at fair value at the acquisition date of the indemnified assets and is measured on the same basis as the underlying loans, subject to collectability or contractual limitations. The fair value of the loss share agreements on the acquisition date reflects the discounted reimbursements expected to be received from the FDIC, using an appropriate discount rate, which was based on the market rate for a similar term security at the time of the acquisition adjusted for additional risk premium.
	The loss share agreements continue to be measured on the same basis as the related indemnified assets. Because the acquired loans are subject to the accounting prescribed by ASC 310-30, subsequent changes to the basis of the loss share agreements also follow that model. Deterioration in the credit quality of the loans, which is immediately recorded as an adjustment to the allowance for loan losses, would immediately increase the FDIC receivable, with the offset recorded through the consolidated statement of income. Improvements in the credit quality or cash flows of loans, which is reflected as an adjustment to yield and accreted into income over the remaining life of the loans, decrease the FDIC receivable, with such decrease being amortized into income over (1) the same period as the underlying loans or (2) the life of the loss share agreements, whichever is shorter. Loss assumptions used in the basis of the indemnified loans are consistent with the loss assumptions used to measure the indemnification asset. Discounts and premiums reflecting the estimated timing of expected reimbursements is accreted into income over the life of the loss share agreements.
	Collection and other servicing costs related to loans covered under FDIC loss share agreements are charged to noninterest expense as incurred. A receivable from the FDIC is recorded for the estimated amount of such expenses that are expected to be reimbursed and results in an increase to noninterest income. The estimated amount of such reimbursements is determined by several factors including the existence of loan participation agreements with other financial institutions, the presence of partial guarantees from the Small Business Administration and whether a reimbursable loss has been recorded on the loan for which collection and servicing costs have been incurred. Future adjustments to the receivable from the FDIC may be necessary as additional information becomes available related to the amount of previously recorded collection and servicing costs that will actually be reimbursed by the FDIC and the probable timing of such reimbursements.
Consolidation, Policy [Policy Text Block]	'
	Principles of Consolidation and Segment Reporting
	The consolidated financial statements of BancShares include the accounts of BancShares and those subsidiaries that are majority owned by BancShares and over which BancShares exercises control. In consolidation, all significant intercompany accounts and transactions are eliminated. The results of operations of companies or assets acquired are included only from the dates of acquisition. All material wholly-owned and majority-owned subsidiaries are consolidated unless GAAP requires otherwise.
	On January 7, 2011, IronStone Bank (ISB), a federally-chartered thrift institution and wholly-owned subsidiary of BancShares, was legally merged into FCB resulting in a single banking subsidiary of BancShares. Prior to the January 2011 merger, FCB and ISB were considered to be distinct operating segments. As a result of the merger and various organizational changes resulting from the merger, there is no longer a focus on the discrete financial measures of each entity, and, based on application of GAAP, no other reportable operating segments exist. Therefore, BancShares now operates as one reportable segment.
	FCB has investments in certain low income housing tax credit and renewable energy LLCs that have been evaluated and determined to be variable interest entities (VIEs). VIEs are legal entities in which equity investors do not have sufficient equity at risk for the entity to independently finance its activities, or as a group, the holders of the equity investment at risk lack the power through voting or similar rights to direct the activities of the entity that most significantly impact its economic performance, or do not have the obligation to absorb the expected losses of the entity or the right to receive expected residual returns of the entity. Consolidation of a VIE is considered appropriate if a reporting entity holds a controlling financial interest in the VIE. Analysis of these investments concluded that FCB is not the primary beneficiary and does not hold a controlling interest in the VIEs and, therefore, the assets and liabilities of these partnerships are not consolidated into the financial statements of FCB or BancShares. The recorded investment in these partnerships is reported within other assets in BancShares' Consolidated Balance Sheets.
Reclassification, Policy [Policy Text Block]	'
	Reclassifications
	In certain instances, amounts reported in prior years' consolidated financial statements have been reclassified to conform to the current financial statement presentation. Such reclassifications had no effect on previously reported cash flows, shareholders' equity or net income.
	During the third quarter of 2013, management reevaluated its fair value leveling methodology and the inputs utilized by the 3rd party pricing services for the current and prior periods. Management concluded that due to the reliance on significant observable inputs, the fair values of its US Treasury, Government agency and other securities should be classified as level 2 rather than the level 1 previously disclosed. Management also concluded that its equity securities should be classified as level 2 rather than the level 1 previously disclosed due to the inactive nature of the markets in which these securities trade.
Use of Estimates, Policy [Policy Text Block]	'
	Use of Estimates in the Preparation of Financial Statements
	The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the financial statements and the reported amounts of revenues and expenses during the reporting periods. Actual results could differ from those estimates, and different assumptions in the application of these policies could result in material changes in BancShares' consolidated financial position, the consolidated results of its operations or related disclosures. Material estimates that are particularly susceptible to significant change include:
	•	Allowance for loan and lease losses
	•	Fair value of financial instruments, including acquired assets and assumed liabilities
	•	Pension plan assumptions
	•	Cash flow estimates on acquired loans
	•	Receivable from and payable to the FDIC for loss share agreements
	•	Income tax assets, liabilities and expense
Business Combinations Policy [Policy Text Block]	'
	Business Combinations
	BancShares accounts for all business combinations using the acquisition method of accounting as required by Accounting Standards Codification (ASC) Topic 805, Business Combinations. Under this method of accounting, acquired assets and assumed liabilities are included with the acquirer's accounts as of the date of acquisition, with any excess of purchase price over the fair value of the net assets acquired (including identifiable core deposit intangibles (CDI)) capitalized as goodwill. The CDI asset is recognized as an asset apart from goodwill when it arises from contractual or other legal rights or if it is capable of being separated or divided from the acquired entity and sold, transferred, licensed, rented or exchanged. In addition, acquisition-related costs and restructuring costs are recognized as period expenses as incurred.
	The acquired assets and assumed liabilities are recorded at estimated fair values. Management makes significant estimates and exercises significant judgment in accounting for business combinations. Management judgmentally assigns risk ratings to loans based on credit quality, appraisals and estimated collateral values, and estimated expected cash flows to measure fair values for loans. Other real estate (OREO) is valued based upon pending sales contracts and appraised values, adjusted for current market conditions. CDI is valued based on a weighted combination of the income and market approach where the income approach converts anticipated economic benefits to a present value and the market approach evaluates the market in which the asset is traded to find an indication of prices from actual transactions. Management uses quoted or current market prices to determine the fair value of investment securities. Fair values of deposits, short-term borrowings and long-term obligations are based on current market interest rates and are inclusive of any applicable prepayment penalties.
Cash and Cash Equivalents, Policy [Policy Text Block]	'
	Cash and Cash Equivalents
	Cash and cash equivalents include cash and due from banks, interest-bearing deposits with banks and Federal funds sold. Cash and cash equivalents have maturities of three months or less. Accordingly, the carrying amount of such instruments is considered a reasonable estimate of fair value.
Investment, Policy [Policy Text Block]	'
	Investment Securities
	BancShares' investments consist of government agency securities, U.S. Treasury securities, mortgage-backed securities, corporate bonds, state, county and municipal obligations and equity securities.
	BancShares classifies marketable investment securities as held to maturity, available for sale or trading. Interest income and dividends on securities are recognized in interest income on an accrual basis. Premiums and discounts on debt securities are amortized as an adjustment to interest income using the interest method. At December 31, 2013, and 2012, BancShares had no investment securities held for trading purposes.
	Debt securities are classified as held to maturity where BancShares has both the intent and ability to hold the securities to maturity. These securities are reported at amortized cost.
	Investment securities that may be sold to meet liquidity needs arising from unanticipated deposit and loan fluctuations, changes in regulatory capital requirements or unforeseen changes in market conditions, are classified as available for sale. Securities available for sale are reported at estimated fair value, with unrealized gains and losses reported in accumulated other comprehensive income or loss, net of deferred income taxes, in the shareholders' equity section of the Consolidated Balance Sheets. Gains or losses realized from the sale of securities available for sale are determined by specific identification and are included in noninterest income. As of December 31, 2013, there was no intent to sell any of the securities classified as available for sale.
	BancShares evaluates each held to maturity and available for sale security in a loss position for other-than-temporary impairment (OTTI) in accordance with ASC Topic 320-10, Investments - Debt and Equity Securities, at least quarterly. BancShares considers such factors as the length of time and the extent to which the market value has been below amortized cost, long term expectations and recent experience regarding principal and interest payments, BancShares' intent to sell, and whether it is more likely than not that it would be required to sell those securities before the anticipated recovery of the amortized cost basis. The credit component of an OTTI loss is recognized in earnings and the non-credit component is recognized in accumulated other comprehensive income in situations where BancShares does not intend to sell the security, and it is more likely than not that BancShares will not be required to sell the security prior to recovery.
	Nonmarketable Securities - FHLB Stock and TARP Stock
	Federal law requires a member institution of the Federal Home Loan Bank (FHLB) system to purchase and hold restricted stock of its district FHLB according to a predetermined formula. This stock is restricted in that it may only be sold to the FHLB and all sales must be at par. Accordingly, the FHLB restricted stock is carried at cost, less any applicable impairment charges.
	Investments in preferred stock that had initially been issued under the U. S. Treasury's Troubled Asset Recovery Program (TARP) and were purchased in the auction process initiated when the U. S. Treasury decided to liquidate its investments are carried at cost, less any applicable impairment charges, because the securities are not traded and an active market does not exist. Nonmarketable securities are periodically evaluated for impairment. BancShares considers positive and negative evidence, including the profitability and asset quality of the issuer, dividend payment history and recent redemption experience when determining the ultimate recoverability of the recorded investment. Investments in FHLB stock and TARP stock are included in other assets.
Receivables, Policy [Policy Text Block]	'
	Loans Held For Sale
	BancShares accounts for new originations of prime residential mortgage loans at the lower of aggregate cost or fair value. Gains and losses on sales of mortgage loans are charged to the Consolidated Statements of Income in mortgage income.
	Loans and Leases
	BancShares' accounting methods for loans and leases differ depending on whether they are originated or acquired, and if acquired, whether or not the acquired assets reflect credit deterioration since the date of origination such that it is probable at the date of acquisition that BancShares will be unable to collect all contractually required payments.
	Originated Loans and Leases
	Loans and leases for which management has the intent and ability to hold for the foreseeable future are classified as held for investment and carried at the principal amount outstanding net of any unearned income, charge-offs and unamortized fees and costs on originated loans. Nonrefundable fees collected and certain direct costs incurred related to loan originations are deferred and recorded as an adjustment to loans and leases outstanding. The net amount of the nonrefundable fees and costs are amortized to interest income over the contractual lives using methods that approximate a constant yield.
	Acquired Loans and Leases
	Acquired loans and leases are recorded at fair value at the date of acquisition. No allowance for loan and lease losses is recorded on the acquisition date as the fair value of the acquired assets incorporates assumptions regarding credit risk.
	Acquired loans and leases are evaluated at acquisition and where a discount is noted at least in part due to credit, the loans are accounted for under the guidance in ASC Topic 310-30, Loans and Debt Securities Acquired with Deteriorated Credit Quality. Purchased impaired loans and leases reflect credit deterioration since origination such that it is probable at acquisition that BancShares will be unable to collect all contractually required payments. As of the acquisition date, the difference between contractually required payments and the cash flows expected to be collected is the nonaccretable difference, which is included as a reduction to the carrying amount of acquired loans and leases. If the timing and amount of the future cash flows is reasonably estimable, any excess of cash flows expected at acquisition over the estimated fair value is the accretable yield and is recognized in interest income over the asset's remaining life using a level yield method.
	Over the life of acquired loans and leases, BancShares continues to estimate cash flows expected to be collected on individual loans and leases or on pools of loans and leases sharing common risk characteristics. BancShares evaluates at each balance sheet date whether the estimated cash flows and corresponding present value of its loans and leases determined using the effective interest rates has decreased and if so, recognizes provision for loan and lease losses in its Consolidated Statements of Income. For any increases in cash flows expected to be collected, BancShares adjusts any prior recorded allowance for loan and lease losses first, and then the amount of accretable yield recognized on a prospective basis over the loan's or pool's remaining life.
	Accretion income is recognized on all non-pooled loans and leases except for situations when the timing and amount of future cash flows cannot be determined. Loans and leases with uncertain future cash flows are accounted for under the cost recovery method and those loans and leases are generally reported as nonaccrual.
	For loans and leases where the cash flow analysis was initially performed at the loan pool level, the amount of accretable yield and nonaccretable difference is determined at the pool level. Each loan pool is made up of assets with similar characteristics at the date of acquisition including loan type, collateral type and performance status. All loan pools that have accretable yield to be recognized in interest income are classified as accruing regardless of the status of individual loans within the pool.
Finance, Loan and Lease Receivables, Held-for-investment, Allowance and Nonperforming Loans, Nonperforming Loans Policy [Policy Text Block]	'
	Impaired Loans, Troubled Debt Restructurings (TDR) and Nonperforming Assets
	Management will deem originated loans and leases to be impaired when, based on current information and events, it is probable that a borrower will be unable to pay all amounts due according to the contractual terms of the loan agreement. Generally, management considers the following loans to be impaired; all TDR loans, commercial and consumer relationships which are nonaccrual or 90+ days past due and greater than $500,000 as well as any other loan management deems impaired. Once a loan is considered impaired, it is required to be individually evaluated for impairment at least quarterly using discounted cash flows, observable market price or the fair value of collateral. When the ultimate collectability of an impaired loan's principal is doubtful, all cash receipts are applied to principal. Once the recorded principal balance has been reduced to zero, future cash receipts are applied to interest income, to the extent that any interest has been foregone.
	A loan is considered a TDR when a modification to a borrower's debt agreement is made and where a concession that is granted for economic or legal reasons related to a borrower's financial difficulties that otherwise would not be granted. TDRs are undertaken in order to improve the likelihood of collection on the loan and may result in a stated interest rate lower than the current market rate for new debt with similar risk, other modifications to the structure of the loan that fall outside of normal underwriting policies and procedures or, in certain limited circumstances, forgiveness of principal or interest. Modifications of acquired loans that are part of a pool accounted for as a single asset are not designated as TDRs. TDRs can involve loans remaining on nonaccrual, moving to nonaccrual or continuing on accruing status, depending on the individual facts and circumstances of the borrower. In circumstances where a portion of the loan balance is charged off, BancShares typically classifies the remaining balance as nonaccrual.
	In connection with commercial TDRs, the decision to maintain a loan that has been restructured on accrual status is based on a current credit evaluation of the borrower's financial condition and prospects for repayment under the modified terms. This evaluation includes consideration of the borrower's current capacity to pay, which may include a review of the borrower's current financial statements, an analysis of cash flow documenting the borrower's capacity to pay all debt obligations and an evaluation of secondary sources of payment from the borrower and any guarantors. This evaluation also includes an evaluation of the borrower's current willingness to pay, which may include a review of past payment history, an evaluation of the borrower's willingness to provide information on a timely basis and consideration of offers from the borrower to provide additional collateral or guarantor support. The credit evaluation also reflects consideration of the adequacy of collateral to cover all principal and interest and trends indicating improving profitability and collectability of receivables.
	Nonaccrual TDRs may be returned to accrual status based on a current credit evaluation of the borrower's financial condition and prospects for repayment under the modified terms. This evaluation includes consideration of the borrower's sustained historical repayment performance for a reasonable period, generally a minimum of six months, prior to the date on which the loan is returned to accrual status. Sustained historical repayment performance for a reasonable time prior to the restructuring may also be considered.
	Nonperforming assets include nonaccrual loans and leases and foreclosed property. Foreclosed property consists of real estate and other assets acquired as a result of loan defaults.
	BancShares classifies all originated loans and leases as past due when the payment of principal and interest based upon contractual terms is greater than 30 days delinquent. Generally, commercial loans are placed on nonaccrual status when principal or interest becomes 90 days past due or when it is probable that principal or interest is not fully collectible, whichever occurs first. Once a loan is placed on nonaccrual status it is evaluated for impairment and a charge-off is recorded in the amount of the impairment. Consumer loans are subject to mandatory charge-off at a specified delinquency date consistent with regulatory guidelines.
	Generally, when loans and leases are placed on nonaccrual status, accrued interest receivable that had been recognized in the current year is reversed against interest income; accrued interest receivable that had been recognized in a prior year is charged off. All payments received thereafter are applied as a reduction to the remaining principal balance as long as concern exists as to the ultimate collection of the principal. Loans and leases are generally removed from nonaccrual status when they become current as to both principal and interest and concern no longer exists as to the collectability of principal and interest.
	Noncovered OREO acquired as a result of foreclosure is carried at net realizable value. Net realizable value equals fair value less estimated selling costs. Any excess of cost over fair value at the time of foreclosure is charged to the allowance for loan and lease losses. Cost is determined based on the sum of unpaid principal, accrued but unpaid interest and acquisition costs associated with the loan.
	OREO are subject to periodic revaluations of the underlying collateral, at least annually. The periodic revaluations are generally based on the appraised value of the property and may include additional adjustments based upon management's review of the valuation and specific knowledge of the OREO. Routine maintenance costs, subsequent declines in market value and net losses on disposal are included in foreclosed property expense. Gains and losses resulting from the sale or writedown of OREO and income and expenses related to its operation are recorded in other noninterest income.
	OREO covered by loss share agreements with the FDIC is reported exclusive of expected reimbursement cash flows from the FDIC at net realizable value. Subsequent downward adjustments to the estimated recoverable value of covered OREO result in a reduction of covered OREO, a charge to foreclosure related expenses and an increase in the FDIC receivable for the estimated amount to be reimbursed, with a corresponding amount recorded as an adjustment to FDIC receivable.
FDIC Payable for Loss Share Agreements [Policy Text Block]	'
	Payable to the FDIC for Loss Share Agreements
	The purchase and assumption agreements for certain FDIC-assisted transactions include contingent payments that may be owed to the FDIC at the termination of the loss share agreements. The contingent payment is due to the FDIC if actual cumulative losses on acquired covered assets are lower than the cumulative losses originally estimated by the FDIC at the time of acquisition. The contingent liability, which is reported in the Consolidated Balance Sheets as a payable to the FDIC for loss share agreements, is calculated by discounting estimated future payments. The ultimate settlement amount of the contingent payment is dependent upon the performance of the underlying covered loans, the passage of time and actual claims submitted to the FDIC.
Loans and Leases Receivable, Allowance for Loan Losses Policy [Policy Text Block]	'
	Allowance for Loan and Lease Losses (ALLL)
	Originated Loans
	The ALLL represents management's best estimate of probable credit losses within the loan and lease portfolio at the balance sheet date. Management determines the ALLL based on an ongoing evaluation. This evaluation is inherently subjective because it requires material estimates, including the amount and timing of cash flows expected to be received on acquired loans. Those estimates are susceptible to significant change. Adjustments to the ALLL are recorded with a corresponding entry to provision for loan and lease losses. Loan and lease balances deemed to be uncollectible are charged off against the ALLL. Recoveries of amounts previously charged off are generally credited to the ALLL.
	Accounting standards require the presentation of certain information at the portfolio segment level, which represents the level at which an entity develops and documents a systematic methodology to determine its ALLL. BancShares evaluates its loan and lease portfolio using three portfolio segments: originated commercial, originated noncommercial and acquired. The originated commercial segment includes commercial construction and land development, commercial mortgage, commercial and industrial, lease financing and other commercial real estate loans, and the related ALLL is calculated based on a risk-based approach as reflected in credit risk grades assigned to commercial segment loans. The originated noncommercial segment includes noncommercial construction and land development, residential mortgage, revolving mortgage and consumer loans, and the associated ALLL was determined using a delinquency-based approach.
	BancShares' methodology for calculating the ALLL includes estimating a general allowance for pools of unimpaired loans and specific allocations for significant individual impaired loans. The general allowance is based on net historical loan loss experience for homogeneous groups of loans based mostly on loan type then aggregated on the basis of similar risk characteristics and performance trends. The general allowance estimate also contains qualitative components that allow management to adjust reserves based on historical loan loss experience for changes in the economic environment, portfolio trends and other factors. The specific allowance component is determined when management believes that the collectability of an individually reviewed loan has been impaired and a loss is probable. The fair value of impaired loans is based on the present value of expected cash flows, market prices of the loans, if available, or the value of the underlying collateral. Expected cash flows are discounted at the loans' effective interest rates.
	The general allowance considers probable, incurred losses that are inherent within the loan portfolio but have not been specifically identified. Loans are divided into segments for analysis based in part on the risk profile inherent in each segment. Loans are further segmented into classes to appropriately recognize changes in inherent risk. A primary component of determining the general allowance for performing and classified loans not analyzed specifically is the actual loss history of the various classes. Loan loss factors based on historical experience may be adjusted for significant factors that, in management's judgment, affect the collectability of the portfolio at the balance sheet date. For originated commercial loans and leases, management incorporates historical net loss data to develop the applicable loan loss factors by utilizing information that considers the class of the commercial loan and associated risk rating. For the originated noncommercial segment, management incorporates specific loan class and delinquency status trends into the loan loss factors. Loan loss factors may be adjusted quarterly based on changes in the level of historical net charge-offs and model adjustment parameter updates by management, such as the number of periods included in the calculation of loss factors, loss severity and portfolio attrition.
	The quarterly ALLL evaluation process for the general allowance also includes a qualitative framework that considers economic conditions, composition of the loan portfolio, trends in delinquent and nonperforming loans, historical loss experience by categories of loans, concentrations of credit, changes in lending policies and underwriting standards, regulatory exam results and other factors indicative of inherent losses remaining in the portfolio. Management may adjust the ALLL calculated based on historical loan loss factors when assessing changes in the factors in the qualitative framework. The adjustments to the ALLL for the qualitative framework are based on economic data, data analysis of portfolio trends and management judgment. These adjustments are specific to the loan class level. Prior to the second quarter of 2013, a portion of the allowance for loan and lease losses was not allocated to any specific class of loans. This nonspecific portion reflected management's best estimate of the elements of imprecision and estimation risk inherent in the calculation of the overall allowance.
	During the second quarter of 2013, BancShares implemented enhancements to the process to estimate the ALLL and the reserve for unfunded commitments, described below. Through detailed analysis of historical loss data, the process enhancements enabled allocation of the previously unallocated "nonspecific" ALLL and a portion of the reserve for unfunded loan commitments to specific loan classes. The enhanced ALLL estimates implicitly include the risk of draws on open lines within each loan class. Other than the modifications described above, the enhancements to the methodology had no material impact on the ALLL.
	Specific allocations are made for significant, individual impaired loans. Management deems a loan to be impaired when, based upon current information and events, it is probable that BancShares will be unable to collect all amounts due according to the contractual terms of the loan. Generally management considers the following loans to be impaired: all TDR loans, commercial and consumer relationships which are nonaccrual or 90+ days past due and greater than $500,000 as well as any other loan management deems impaired. All impaired loans are reviewed for potential impairment on a quarterly basis. Specific valuation allowances are established or partial charge-offs are recorded on impaired loans for the difference between the loan amount and the estimated fair value.
	Management continuously monitors and actively manages the credit quality of the entire loan portfolio and adjusts the ALLL to an appropriate level. By assessing the probable estimated incurred losses in the loan portfolio on a quarterly basis, management is able to adjust specific and general loss estimates based upon the most recent information available. Future adjustments to the ALLL may be necessary based on changes in economic and other conditions. Additionally, various regulatory agencies, as an integral part of their examination process, periodically review BancShares' ALLL. Such agencies may require the recognition of adjustments to the ALLL based on their judgments of information available to them at the time of their examination. Management considers the established ALLL adequate to absorb probable losses that relate to loans and leases outstanding as of December 31, 2013.
	Each portfolio segment and the classes within those segments are subject to risks that could have an adverse impact on the credit quality of the loan and lease portfolio and the related ALLL. Management has identified the most significant risks as described below that are generally similar among the segments and classes. While the list is not exhaustive, it provides a description of the risks management has determined are the most significant.
	Originated Commercial Loans and Leases
	Each commercial loan or lease is centrally underwritten based primarily upon the customer's ability to generate the required cash flow to service the debt in accordance with the contractual terms and conditions of the loan agreement. A complete understanding of the borrower's business, including the experience and background of the principals, is obtained prior to approval. To the extent that the loan or lease is secured by collateral, which is true for the majority of commercial loans and leases, the likely value of the collateral and what level of strength the collateral brings to the transaction is evaluated. To the extent that the principals or other parties provide personal guarantees, the relative financial strength and liquidity of each guarantor is assessed.
	The significant majority of relationships in the originated commercial segment are assigned credit risk grades based upon an assessment of conditions that affect the borrower's ability to meet contractual obligations under the loan agreement. This process includes reviewing the borrowers' financial information, payment history, credit documentation, public information and other information specific to each borrower. Credit risk grades are reviewed annually, or at any point management becomes aware of information affecting the borrowers' ability to fulfill their obligations. Our credit risk grading standards are described in Note C.
	The impairment assessment and determination of the related specific reserve for each impaired loan is based on a loan's characteristics. Impairment measurement for loans that are not collateral dependent is based on the present value of expected cash flows discounted at the loan's effective interest rate. Specific valuation allowances are established or partial charge-offs are recorded for the difference between the loan amount and the estimated fair value. Impairment measurement for most real estate loans, particularly when a loan is considered to be a probable foreclosure, is based on the fair value of the underlying collateral. Collateral is appraised and market value, appropriately adjusted for an assessment of the sales and marketing costs as well as the expected holding period, is used to calculate an anticipated fair value.
	General reserves for collective impairment are based on estimated incurred losses related to unimpaired commercial loans and leases as of the balance sheet date. Incurred loss estimates for the originated commercial segment are based on average loss rates by credit risk ratings, which are estimated using historical loss experience and credit risk rating migrations. Incurred loss estimates may be adjusted through a qualitative assessment to reflect current economic conditions and portfolio trends including credit quality, concentrations, aging of the portfolio and significant policy and underwriting changes.
	Common risks to each class of commercial loans include general economic conditions within the markets BancShares serves, as well as risks that are specific to each transaction including demand for products and services, personal events, such as disability or change in marital status and reductions in the value of collateral. Due to the concentration of loans in the medical, dental and related fields, BancShares is susceptible to risks that governmental actions, including implementation of the Affordable Care Act, will fundamentally alter the medical care industry in the United States.
	In addition to these common risks for the majority of the originated commercial segment, additional risks are inherent in certain classes of originated commercial loans and leases.
	Commercial construction and land development
	Commercial construction and land development loans are highly dependent on the supply and demand for commercial real estate in the markets served by BancShares as well as the demand for newly constructed residential homes and lots that customers are developing. Deterioration in demand could result in decreases in collateral values and could make repayment of the outstanding loans more difficult for customers.
	Commercial mortgage, commercial and industrial and lease financing
	Commercial mortgage loans, commercial and industrial loans and lease financing are primarily dependent on the ability of borrowers to achieve business results consistent with those projected at loan origination resulting in cash flow sufficient to service the debt. To the extent that a customer's business results are significantly unfavorable versus the original projections, the ability for the loan to be serviced on a basis consistent with the contractual terms may be at risk. While these loans and leases are generally secured by real property, personal property or business assets such as inventory or accounts receivable, it is possible that the liquidation of the collateral will not fully satisfy the obligation.
	Other commercial real estate
	Other commercial real estate loans consist primarily of loans secured by multifamily housing and agricultural loans. The primary risk associated with multifamily loans is the ability of the income-producing property that collateralizes the loan to produce adequate cash flow to service the debt. High unemployment or generally weak economic conditions may result in customers having to provide rental rate concessions to achieve adequate occupancy rates. The performance of agricultural loans is highly dependent on favorable weather, reasonable costs for seed and fertilizer and the ability to successfully market the product at a profitable margin. The demand for these products is also dependent on macroeconomic conditions that are beyond the control of the borrower.
	Originated Noncommercial Loans and Leases
	Each originated noncommercial loan is centrally underwritten using automated credit scoring and analysis tools. These credit scoring tools take into account factors such as payment history, credit utilization, length of credit history, types of credit currently in use and recent credit inquiries. To the extent that the loan is secured by collateral, the likely value of that collateral is evaluated.
	The ALLL for the originated noncommercial segment is primarily calculated on a pooled basis using a delinquency-based approach. Estimates of incurred losses are based on historical loss experience and the migration of receivables through the various delinquency pools applied to the current risk mix. These estimates may be adjusted through a qualitative assessment to reflect current economic conditions, portfolio trends and other factors. The remaining portion of the ALLL related to the originated noncommercial segment results from loans that are deemed impaired. The impairment assessment and determination of the related specific reserve for each impaired loan is based on a loan's characteristics. Impairment measurement for loans that are not collateral dependent is based on the present value of expected cash flows discounted at the loan's effective interest rate. Specific valuation allowances are established or partial charge-offs are recorded for the difference between the loan amount and the estimated fair value. Impairment measurement for most real estate loans, particularly when a loan is considered to be a probable foreclosure, is based on the fair value of the underlying collateral. Collateral is appraised and market value, appropriately adjusted for an assessment of the sales and marketing costs as well as the expected holding period, is used to calculate an anticipated fair value.
	Common risks to each class of noncommercial loans include risks that are not specific to individual transactions such as general economic conditions within the markets BancShares serves, particularly unemployment and potential declines in real estate values. Personal events such as disability or change in marital status also add risk to noncommercial loans.
	In addition to these common risks for the majority of noncommercial loans, additional risks are inherent in certain classes of noncommercial loans.
	Revolving mortgage
	Revolving mortgage loans are often secured by second liens on residential real estate, thereby making such loans particularly susceptible to declining collateral values. A substantial decline in collateral value could render a second lien position to be effectively unsecured. Additional risks include lien perfection inaccuracies, disputes with first lienholders and uncertainty regarding the customer's performance with respect to the first lien that may further weaken the collateral position. Further, the open-end structure of these loans creates the risk that customers may draw on the lines in excess of the collateral value if there have been significant declines since origination.
	Consumer
	The consumer loan portfolio includes loans secured by personal property such as automobiles, marketable securities, other titled recreational vehicles including boats and motorcycles, as well as unsecured consumer debt. The value of underlying collateral within this class is especially volatile due to potential rapid depreciation in values since date of loan origination, potentially in excess of principal balances.
	Residential mortgage and noncommercial construction and land development
	Residential mortgage and noncommercial construction and land development loans are made to individuals and are typically secured by 1-4 family residential property, undeveloped land and partially developed land in anticipation of pending construction of a personal residence. Significant and rapid declines in real estate values can result in residential mortgage loan borrowers having debt levels in excess of the current market value of the collateral. Noncommercial construction and land development projects can experience delays in completion and cost overruns that exceed the borrower's financial ability to complete the project. Such cost overruns can routinely result in foreclosure of partially completed and unmarketable collateral.
	Acquired loans
	The risks associated with acquired loans are generally consistent with the risks identified for commercial and noncommercial originated loans and the classes of loans within those segments. However, these loans were underwritten by other institutions with weaker lending standards. Additionally, in some cases, collateral for acquired loans is located in regions that have experienced profound erosion of real estate values. Therefore, there exists a significant risk that acquired loans are not adequately supported by borrower cash flow or the values of underlying collateral.
	The ALLL for acquired loans is estimated based on the estimated cash flows approach. Over the life of acquired loans and leases, BancShares continues to estimate cash flows expected to be collected on individual loans and leases or on pools of loans and leases sharing common risk characteristics. BancShares evaluates at each balance sheet date whether the estimated cash flows and corresponding present value of its loans and leases determined using the effective interest rates has decreased and if so, recognizes provision for loan and lease losses. For any increases in cash flows expected to be collected, BancShares adjusts any prior recorded allowance for loan and lease losses first and then the amount of accretable yield recognized on a prospective basis over the loan's or pool's remaining life.
Reserve for unfunded commitments, Policy [Policy Text Block]	'
	Reserve for Unfunded Commitments
	The reserve for unfunded commitments represents the estimated probable losses related to unfunded lending commitments, such as letters of credit, financial guarantees and similar binding commitments. The reserve is calculated in a manner similar to the loans evaluated collectively for impairment, while also considering the timing and likelihood that the available credit will be utilized as well as the exposure upon default. The reserve for unfunded commitments is presented within other liabilities on the consolidated balance sheets, distinct from the ALLL, and adjustments to the reserve for unfunded commitments are included in other noninterest expense in the consolidated statements of income.
Repurchase and Resale Agreements Policy [Policy Text Block]	'
	Securities Sold Under Repurchase Agreements
	Securities sold under repurchase agreements generally have maturities of one day and are reflected as short-term borrowings on the Consolidated Balance Sheets and are recorded based on the amount of cash received in connection with the borrowing. At December 31, 2013, and 2012, BancShares had $97.0 million and $111.9 million of securities sold under repurchase agreements, respectively.
Property, Plant and Equipment, Policy [Policy Text Block]	'
	Premises and Equipment
	Premises, equipment and capital leases are stated at cost less accumulated depreciation and amortization. For financial reporting purposes, depreciation and amortization are computed using the straight-line method and are expensed over the estimated useful lives of the assets, which range from 25 to 40 years for premises and three to 10 years for furniture, software and equipment. Leasehold improvements are amortized over the terms of the respective leases or the useful lives of the improvements, whichever is shorter. Gains and losses on dispositions are recorded in other noninterest expense. Maintenance and repairs are charged to occupancy expense or equipment expense as incurred. Obligations under capital leases are amortized over the life of the lease using the interest method to allocate payments between principal reduction and interest expense. Rent expense and rental income on operating leases are recorded using the straight-line method over the appropriate lease terms.
Goodwill and Intangible Assets, Policy [Policy Text Block]	'
	Goodwill and Other Intangible Assets
	BancShares accounts for acquisitions using the acquisition method of accounting. Under acquisition accounting, if the purchase price of an acquired company exceeds the fair value of its net assets, the excess is carried on the acquirer's balance sheet as goodwill. An intangible asset is recognized as an asset apart from goodwill if it arises from contractual or other legal rights or if it is capable of being separated or divided from the acquired entity and sold, transferred, licensed, rented or exchanged. Intangible assets are identifiable assets, such as core deposit intangibles, resulting from acquisitions which are amortized on an accelerated basis over an estimated useful life and evaluated for impairment whenever events or changes in circumstances indicate the carrying amount of the assets may not be recoverable.
	Goodwill is not amortized but is evaluated at least annually for impairment or more frequently if events occur or circumstances change that may trigger a decline in the value of the reporting unit or otherwise indicate that a potential impairment exists. Examples of such events or circumstances include deterioration of general economic conditions, limitations on accessing capital, other equity and credit market developments, adverse change(s) in the environment in which BancShares operates, regulatory or political developments and changes in management, key personnel, strategy or customers. The evaluation of goodwill is based on a variety of factors, including common stock trading multiples and data from comparable acquisitions. Potential impairment of goodwill exists when the carrying amount of a reporting unit exceeds its fair value. In accordance with ASC Topic 350, Intangibles - Goodwill and Other, the fair value for the reporting unit is computed using various methods including market capitalization, price-earnings multiples, price-to-tangible book and market premium.
	To the extent the reporting unit's carrying amount exceeds its fair value, an indication exists that the reporting unit's goodwill may be impaired, and the second step of impairment testing will be performed. In the second step, the implied fair value of the reporting unit's goodwill is determined by allocating the reporting unit's fair value to all of its assets (recognized and unrecognized) and liabilities as if the reporting unit had been acquired in a business combination at the date of the impairment test. If the implied fair value of the reporting unit's goodwill is lower than its carrying amount, goodwill is impaired and is written down to the implied fair value. The loss recognized is limited to the carrying amount of goodwill. Once an impairment loss is recognized, future increases in fair value will not result in the reversal of previously recognized losses.
	Annual impairment tests are conducted as of July 31 each year. Based on the July 31, 2013, impairment test, management concluded there was no indication of goodwill impairment. In addition to the annual testing requirement, impairment tests are performed if various other events occur including significant adverse changes in the business climate, considering various qualitative and quantitative factors to determine whether impairment exists. There were no such events subsequent to the annual impairment test performed during 2013.
	Other intangible assets with estimable lives are amortized over their estimated useful lives, which are periodically reviewed for reasonableness. As a result of the FDIC-assisted transactions in 2011, 2010 and 2009, identifiable intangible assets were recorded representing the estimated value of the core deposits acquired and certain customer relationships.
Fair Value of Financial Instruments, Policy [Policy Text Block]	'
	Fair Values
	Fair value disclosures are required for all financial instruments, whether or not recognized in the balance sheet, for which it is practicable to estimate that value. Under GAAP, individual fair value estimates are ranked on a three-tier scale based on the relative reliability of the inputs used in the valuation. Fair values determined using level 1 inputs rely on active and observable markets to price identical assets or liabilities. In situations where identical assets and liabilities are not traded in active markets, fair values may be determined based on level 2 inputs, which represent observable data for similar assets and liabilities. Fair values for assets and liabilities that are not actively traded in observable markets are based on level 3 inputs, which are considered to be nonobservable. Fair value estimates derived from level 3 inputs cannot be substantiated by comparison to independent markets and, in many cases, cannot be realized through immediate settlement of the instrument. Accordingly, the aggregate fair value amounts presented do not necessarily represent the underlying value to BancShares. For additional information, see Note L to the Consolidated Financial Statements.
Income Tax, Policy [Policy Text Block]	'
	Income Taxes
	Deferred income taxes are reported when different accounting methods have been used in determining income for income tax purposes and for financial reporting purposes. Deferred taxes are computed using the asset and liability approach as prescribed in ASC Topic 740, Income Taxes. Under this method, a deferred tax asset or liability is determined based on the currently enacted tax rates applicable to the period in which the differences between the financial statement carrying amounts and tax basis of existing assets and liabilities are expected to be reported in BancShares' income tax returns. The effect on deferred taxes of a change in tax rates is recognized in income in the period that includes the enactment date.
	BancShares continually monitors and evaluates the potential impact of current events on the estimates used to establish income tax expenses and income tax liabilities. On a periodic basis, BancShares evaluates its income tax positions based on current tax law, positions taken by various tax auditors within the jurisdictions that BancShares is required to file income tax returns, as well as potential or pending audits or assessments by such tax auditors.
	BancShares files a consolidated federal income tax return and various combined and separate company state tax returns.
Derivatives, Policy [Policy Text Block]	'
	Derivative Financial Instruments
	A derivative is a financial instrument that derives its cash flows, and therefore its value, by reference to an underlying instrument, index or referenced interest rate. These instruments include interest rate swaps, caps, floors, collars, options or other financial instruments designed to hedge exposures to interest rate risk or for speculative purposes.
	BancShares selectively uses interest rate swaps for interest rate risk management purposes. During 2011, BancShares entered into an interest rate swap that qualifies as a cash flow hedge under GAAP. This interest rate swap converts variable-rate exposure on outstanding debt to a fixed rate. The derivative is valued each quarter and changes in the fair value are recorded on the consolidated balance sheet with an offset to other comprehensive income for the effective portion and an offset to the consolidated statement of income for any ineffective portion. The assessment of effectiveness is performed using the long-haul method. BancShares’ interest rate swap has been fully effective since inception; therefore, changes in the fair value of the interest rate swap have had no impact on net income. There are no speculative derivative financial instruments in any period.
	In the event of a change in the forecasted cash flows of the underlying hedged item, the related hedge will be terminated, and management will consider the appropriateness of entering into another hedge for the remaining exposure. The fair value of the terminated hedge will be amortized from accumulated other comprehensive income into earnings over the original life of the terminated swap, provided the remaining cash flows are still probable.
Subsequent Events, Policy [Policy Text Block]	'
	Subsequent Events
	Management has evaluated subsequent events through the date of filing this Form 10-K. See Note V for more information.
Earnings Per Share, Policy [Policy Text Block]	'
	Per Share Data
	Net income per share has been computed by dividing net income by the average number of both classes of common shares outstanding during each period. BancShares had no potential common stock outstanding in any period.
	Cash dividends per share apply to both Class A and Class B common stock. Shares of Class A common stock carry one vote per share, while shares of Class B common stock carry 16 votes per share.
New Accounting Pronouncements, Policy [Policy Text Block]	'
	Recently Adopted Accounting Pronouncements
	FASB ASU 2013-02, “Comprehensive Income (Topic 220): Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income”
	This ASU requires BancShares to provide information about the amounts reclassified out of accumulated other comprehensive income by component. In addition, an entity is required to present, either on the face of the statement where net income is presented or in the notes, significant amounts reclassified out of accumulated other comprehensive income by the respective line items of net income but only if the amount reclassified is required under GAAP to be reclassified to net income in its entirety in the same reporting period. For other amounts, BancShares is required to cross-reference to other disclosures required under GAAP that provide additional detail about those amounts.
	For public entities, the amendments are effective prospectively for reporting periods beginning after December 15, 2012. BancShares adopted the methodologies prescribed by this ASU by the date required. Adoption of this ASU did not have a material effect on BancShares' financial position or results of operations. BancShares has included the required disclosures in its Consolidated Statements of Comprehensive Income and in Note U to the Consolidated Financial Statements.
	FASB 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”
	This ASU addresses the diversity in practice about how to interpret the terms on the same basis and contractual limitations when subsequently measuring an indemnification asset recognized in a government-assisted (Federal Deposit Insurance Corporation or National Credit Union Administration) acquisition of a financial institution that includes a loss sharing agreement (indemnification agreement). When BancShares recognizes an indemnification asset (in accordance with Subtopic 805-20) as a result of a government-assisted acquisition of a financial institution and subsequently a change in the cash flows expected to be collected on the indemnification asset occurs (as a result of a change in cash flows expected to be collected on the assets subject to indemnification), BancShares should subsequently account for the change in the measurement of the indemnification asset on the same basis as the change in the assets subject to indemnification. Any amortization of changes in value should be limited to the contractual term of the indemnification agreement (that is, the lesser of the term of the indemnification agreement and the remaining life of the indemnified assets).
	This guidance became effective for annual periods beginning on or after December 15, 2012, and interim periods within those annual periods. BancShares adopted ASU 2012-06 on January 1, 2013. BancShares had previously accounted for its indemnification asset in accordance with this guidance; accordingly, the adoption of this guidance had no impact on BancShares' consolidated financial position, results of operations or cash flows.

Investments_Tables

Investments (Tables)	12 Months Ended
	Dec. 31, 2013
Investments [Abstract]	'
Aggregate Values And Unrealized Gains And Losses Of Investment Securities	'
	Investment securities as of December 31, 2013, and 2012, along with unrealized gains and losses determined on an individual security basis, are as follows:
		Cost		Gross			Gross unrealized			Fair
				unrealized			losses			value
				gains
		(dollars in thousands)
	Investment securities available for sale
	December 31, 2013
	U.S. Treasury	$	373,223	$	259		$	45		$	373,437
	Government agency	2,543,223		1,798			792			2,544,229
	Mortgage-backed securities	2,486,297		4,526			43,950			2,446,873
	Equity securities	543		21,604			—			22,147
	State, county and municipal	186		1			—			187
	Other	863		—			33			830
	Total investment securities available for sale	$	5,404,335	$	28,188		$	44,820		$	5,387,703
	December 31, 2012
	U.S. Treasury	$	823,241	$	403		$	12		$	823,632
	Government agency	3,052,040		3,501			337			3,055,204
	Mortgage-backed securities	1,315,211		14,787			341			1,329,657
	Equity securities	543		15,822			—			16,365
	State, county and municipal	546		4			—			550
	Other	838		—			18			820
	Total investment securities available for sale	$	5,192,419	$	34,517		$	708		$	5,226,228
	Investment securities held to maturity
	December 31, 2013
	Mortgage-backed securities	$	907	$	67		$	—		$	974
	December 31, 2012
	Mortgage-backed securities	$	1,342	$	133		$	27		$	1,448
Investment Securities Maturity Information	'
	The following table provides the maturity distribution of amortizing investment securities. Repayments of mortgage-backed securities are dependent on the underlying loan balances. Equity securities do not have a stated maturity date.
		December 31, 2013					December 31, 2012
		Cost		Fair			Cost			Fair
				value						value
		(dollars in thousands)
	Investment securities available for sale
	Amortizing securities maturing in:
	One year or less	$	839,956	$	840,883		$	2,285,159		$	2,286,403
	One through five years	2,077,539		2,077,800			1,590,608			1,592,923
	Five through 10 years	—		—			898			880
	Mortgage-backed securities	2,486,297		2,446,873			1,315,211			1,329,657
	Equity securities	543		22,147			543			16,365
	Total investment securities available for sale	$	5,404,335	$	5,387,703		$	5,192,419		$	5,226,228
	Investment securities held to maturity
	Mortgage-backed securities held to maturity	$	907	$	974		$	1,342		$	1,448
Securities Gains (Losses)	'
	For each period presented, securities gains (losses) include the following:
		Year ended December 31
		2013		2012			2011
		(dollars in thousands)
	Gross gains on sales of investment securities available for sale	$	—	$	2,324		$	531
	Gross losses on sales of investment securities available for sale	—		(2		)	(793		)
	Other than temporary impairment loss on equity securities	—		(45		)	(26		)
	Total securities gains (losses)	$	—	$	2,277		$	(288	)
Investment Securities With Unrealized Losses	'
	The following table provides information regarding securities with unrealized losses as of December 31, 2013, and 2012.
		Less than 12 months					12 months or more					Total
		Fair		Unrealized			Fair			Unrealized		Fair		Unrealized
		Value		Losses			Value			Losses		Value		Losses
		(dollars in thousands)
	December 31, 2013
	Investment securities available for sale:
	U.S. Treasury	$	102,105	$	45		$	—		$	—	$	102,105	$	45
	Government agency	780,552		761			29,969			31		810,521		792
	Mortgage-backed securities	2,221,213		42,876			26,861			1,074		2,248,074		43,950
	Other	830		33			—			—		830		33
	Total	$	3,104,700	$	43,715		$	56,830		$	1,105	$	3,161,530	$	44,820
	Investment securities held to maturity:
	Mortgage-backed securities	$	—	$	—		$	—		$	—	$	—	$	—
	December 31, 2012
	Investment securities available for sale:
	U.S. Treasury	$	120,045	$	12		$	—		$	—	$	120,045	$	12
	Government agency	407,498		337			—			—		407,498		337
	Mortgage-backed securities	135,880		214			9,433			127		145,313		341
	Other	820		18			—			—		820		18
	Total	$	664,243	$	581		$	9,433		$	127	$	673,676	$	708
	Investment securities held to maturity:
	Mortgage-backed securities	$	—	$	—		$	17		$	27	$	17	$	27

Loans_and_Leases_Tables

Loans and Leases (Tables)	12 Months Ended
	Dec. 31, 2013
Loans and Leases Receivable Disclosure [Abstract]	'
Loans And Leases Outstanding	'
	Loans and leases outstanding include the following as of the dates indicated:
		December 31, 2013			December 31, 2012
		(dollars in thousands)
	Acquired loans
	Commercial:
	Construction and land development	$	78,915		$	237,906
	Commercial mortgage	642,891			1,054,473
	Other commercial real estate	41,381			107,119
	Commercial and industrial	17,254			49,463
	Other	866			1,074
	Total commercial loans	781,307			1,450,035
	Noncommercial:
	Residential mortgage	213,851			297,926
	Revolving mortgage	30,834			38,710
	Construction and land development	2,583			20,793
	Consumer	851			1,771
	Total noncommercial loans	248,119			359,200
	Total acquired loans	1,029,426			1,809,235
	Originated loans and leases:
	Commercial:
	Construction and land development	319,847			309,190
	Commercial mortgage	6,362,490			6,029,435
	Other commercial real estate	178,754			160,980
	Commercial and industrial	1,081,158			1,038,530
	Lease financing	381,763			330,679
	Other	175,336			125,681
	Total commercial loans	8,499,348			7,994,495
	Noncommercial:
	Residential mortgage	982,421			822,889
	Revolving mortgage	2,113,285			2,210,133
	Construction and land development	122,792			131,992
	Consumer	386,452			416,606
	Total noncommercial loans	3,604,950			3,581,620
	Total originated loans and leases	12,104,298			11,576,115
	Total loans and leases	$	13,133,724		$	13,385,350
Composition Of The Loans And Leases Outstanding By Credit Quality Indicator	'
	The composition of the loans and leases outstanding at December 31, 2013, and December 31, 2012, by credit quality indicator is provided below:
		Originated commercial loans and leases
	Grade:	Construction and land			Commercial			Other		Commercial and		Lease financing		Other		Total originated commercial loans and leases
		development			mortgage			commercial real estate		industrial
		(dollars in thousands)
	December 31, 2013
	Pass	$	308,231		$	6,094,505		$	174,913	$	964,840	$	375,371	$	174,314	$	8,092,174
	Special mention	8,620			119,515			1,362		14,686		2,160		982		147,325
	Substandard	2,944			141,913			2,216		6,352		3,491		40		156,956
	Doubtful	52			5,159			75		144		592		—		6,022
	Ungraded	—			1,398			188		95,136		149		—		96,871
	Total	$	319,847		$	6,362,490		$	178,754	$	1,081,158	$	381,763	$	175,336	$	8,499,348
	December 31, 2012
	Pass	$	274,480		$	5,688,541		$	151,549	$	894,998	$	325,626	$	124,083	$	7,459,277
	Special mention	14,666			166,882			2,812		13,275		1,601		837		200,073
	Substandard	18,761			157,966			5,038		12,073		1,663		756		196,257
	Doubtful	952			13,475			98		1,040		771		—		16,336
	Ungraded	331			2,571			1,483		117,144		1,018		5		122,552
	Total	$	309,190		$	6,029,435		$	160,980	$	1,038,530	$	330,679	$	125,681	$	7,994,495
		Originated noncommercial loans and leases
		Residential			Revolving			Construction		Consumer		Total originated noncommercial
		mortgage			mortgage			and land				loans
								development
		(dollars in thousands)
	December 31, 2013
	Current	$	955,300		$	2,095,480		$	121,026	$	382,710	$	3,554,516
	30-59 days past due	12,885			10,977			1,193		2,114		27,169
	60-89 days past due	4,658			2,378			317		955		8,308
	90 days or greater past due	9,578			4,450			256		673		14,957
	Total	$	982,421		$	2,113,285		$	122,792	$	386,452	$	3,604,950
	December 31, 2012
	Current	$	786,626		$	2,190,186		$	128,764	409,218		$	3,514,794
	30-59 days past due	15,711			12,868			1,941		4,405		34,925
	60-89 days past due	7,559			3,200			490		1,705		12,954
	90 days or greater past due	12,993			3,879			797		1,278		18,947
	Total	$	822,889		$	2,210,133		$	131,992	$	416,606	$	3,581,620
		Acquired loans
	Grade:	Construction			Commercial			Other		Commercial		Residential		Revolving		Construction		Consumer		Total acquired
		and land			mortgage			commercial		and		mortgage		mortgage		and land		and other		loans
		development -						real estate		industrial						development -
		commercial														noncommercial
		(dollars in thousands)
	December 31, 2013
	Pass	$	2,619		$	296,824		$	22,225	$	8,021	$	135,326	$	26,322	$	149	$	1,345	$	492,831
	Special mention	15,530			125,295			3,431		2,585		6,301		2,608		—		—		155,750
	Substandard	52,228			179,657			7,012		5,225		52,774		1,013		2,139		—		300,048
	Doubtful	7,436			40,471			8,713		1,257		2,058		891		295		—		61,121
	Ungraded	1,102			644			—		166		17,392		—		—		372		19,676
	Total	$	78,915		$	642,891		$	41,381	$	17,254	$	213,851	$	30,834	$	2,583	$	1,717	$	1,029,426
	December 31, 2012
	Pass	$	17,010		$	376,974		$	33,570	$	19,451	$	172,165	$	29,540	$	334	$	1,617	$	650,661
	Special mention	25,734			259,264			17,518		12,465		14,863		1,736		—		34		331,614
	Substandard	105,061			344,542			44,335		14,698		83,193		7,434		17,190		239		616,692
	Doubtful	87,445			73,016			11,696		2,757		4,268		—		3,269		117		182,568
	Ungraded	2,656			677			—		92		23,437		—		—		838		27,700
	Total	$	237,906		$	1,054,473		$	107,119	$	49,463	$	297,926	$	38,710	$	20,793	$	2,845	$	1,809,235
Aging Of The Outstanding Loans And Leases By Class Excluding Loans Impaired At Acquisition Date	'
	The aging of the outstanding loans and leases, by class, at December 31, 2013, and December 31, 2012, (excluding loans and leases acquired with deteriorated credit quality) is provided in the table below. The calculation of days past due begins on the day after payment is due and includes all days through which all required interest or principal has not been paid. Loans and leases 30 days or less past due are considered current due to various grace periods that allow borrowers to make payments within a stated period after the due date and still remain in compliance with the loan agreement.
		30-59 days			60-89 days			90 days or greater		Total past		Current		Total loans
		past due			past due					due				and leases
		(dollars in thousands)
	December 31, 2013
	Originated loans and leases:
	Construction and land development - commercial	$	1,603		$	9		$	457	$	2,069	$	317,778	$	319,847
	Commercial mortgage	11,131			3,601			14,407		29,139		6,333,351		6,362,490
	Other commercial real estate	139			210			470		819		177,935		178,754
	Commercial and industrial	3,336			682			436		4,454		1,076,704		1,081,158
	Lease financing	789			1,341			101		2,231		379,532		381,763
	Other	—			85			—		85		175,251		175,336
	Residential mortgage	12,885			4,658			9,578		27,121		955,300		982,421
	Revolving mortgage	10,977			2,378			4,450		17,805		2,095,480		2,113,285
	Construction and land development - noncommercial	1,193			317			256		1,766		121,026		122,792
	Consumer	2,114			955			673		3,742		382,710		386,452
	Total originated loans and leases	$	44,167		$	14,236		$	30,828	$	89,231	$	12,015,067	$	12,104,298
	December 31, 2012
	Originated loans and leases:
	Construction and land development - commercial	$	927		$	—		$	7,878	$	8,805	$	300,385	$	309,190
	Commercial mortgage	24,447			4,179			21,327		49,953		5,979,482		6,029,435
	Other commercial real estate	387			1,240			1,034		2,661		158,319		160,980
	Commercial and industrial	2,833			1,096			605		4,534		1,033,996		1,038,530
	Lease financing	991			138			621		1,750		328,929		330,679
	Other	18			13			—		31		125,650		125,681
	Residential mortgage	15,711			7,559			12,993		36,263		786,626		822,889
	Revolving mortgage	12,868			3,200			3,879		19,947		2,190,186		2,210,133
	Construction and land development - noncommercial	1,941			490			797		3,228		128,764		131,992
	Consumer	4,405			1,705			1,278		7,388		409,218		416,606
	Total originated loans and leases	$	64,528		$	19,620		$	50,412	$	134,560	$	11,441,555	$	11,576,115
Recorded Investment, By Class, In Loans And Leases On Nonaccrual Status And Loans And Leases Greater Than 90 Days Past Due And Still Accruing	'
	The recorded investment, by class, in loans and leases on nonaccrual status, and loans and leases greater than 90 days past due and still accruing at December 31, 2013, and December 31, 2012, (excluding loans and leases acquired with deteriorated credit quality) are as follows:
		December 31, 2013						December 31, 2012
		Nonaccrual			Loans and			Nonaccrual		Loans and
		loans and			leases > 90			loans and		leases > 90
		leases			days and			leases		days and
					accruing					accruing
		(dollars in thousands)
	Originated loans and leases:
	Construction and land development - commercial	$	544		$	—		$	14,930	$	541
	Commercial mortgage	33,529			1,113			50,532		1,671
	Commercial and industrial	1,428			294			6,972		466
	Lease financing	832			—			1,075		—
	Other commercial real estate	1,610			—			2,319		—
	Construction and land development - noncommercial	457			256			668		111
	Residential mortgage	14,701			1,998			12,603		3,337
	Revolving mortgage	—			4,450			—		3,877
	Consumer	69			673			746		1,269
	Total originated loans and leases	$	53,170		$	8,784		$	89,845	$	11,272
Changes In Carrying Value Of Acquired Impaired Loans	'
	The following table provides changes in the carrying value of acquired loans during the years ended December 31, 2013, and December 31, 2012:
		2013			2012
		(dollars in thousands)
	Balance at January 1	$	1,809,235		$	2,362,152
	Reductions for repayments, foreclosures and decreases in fair value	(779,809		)	(552,917		)
	Balance at December 31	$	1,029,426		$	1,809,235
	Outstanding principal balance at December 31	$	1,833,955		$	3,281,958
Changes In The Amount Of Accretable Yield	'
	The following table documents changes to the amount of accretable yield for 2013 and 2012. Removals represent a reduction to the accretable yield as a result of loans that were fully charged off or paid off during the period.
		2013			2012
		(dollars in thousands)
	Balance at January 1	$	539,564		$	276,690
	Accretion	(224,672		)	(304,023		)
	Reclassifications from nonaccretable difference	92,349			353,708
	Changes in expected cash flows that do not affect nonaccretable difference	32,749			213,189
	Balance at December 31	$	439,990		$	539,564
	For loans acquired from 1st Financial, the contractually required payments including principal and interest, cash flows expected to be collected and fair values as of the acquisition date were:
		1-Jan-14
		(dollars in thousands)
	Contractually required payments	$	413,937
	Cash flows expected to be collected	400,326
	Fair value at acquisition date	316,327

Allowance_for_Loan_and_Lease_L1

Allowance for Loan and Lease Losses (Tables)	12 Months Ended
	Dec. 31, 2013
Allowance for Loan and Lease Losses, Adjustments, Net [Abstract]	'
Troubled Debt Restructuring, Summary of Accrual Status [Table Text Block]	'
	The following table provides a summary of total TDRs by accrual status.
		December 31, 2013											December 31, 2012
		Accruing			Nonaccruing				Total				Accruing				Nonaccruing			Total
		(dollars in thousands)
	Commercial loans
	Construction and land development - commercial	$	21,032		$	1,002			$	22,034			$	47,368			$	26,920		$	74,288
	Commercial mortgage	113,323			23,387				136,710				151,728				37,603			189,331
	Other commercial real estate	3,470			1,150				4,620				10,137				2,194			12,331
	Commercial and industrial	9,838			1,142				10,980				10,940				7,237			18,177
	Lease	49			—				49				224				—			224
	Total commercial loans	147,712			26,681				174,393				220,397				73,954			294,351
	Noncommercial
	Residential	23,343			3,663				27,006				28,777				5,828			34,605
	Revolving mortgage	3,095			—				3,095				48				—			48
	Construction and land development - noncommercial	651			457				1,108				1,657				—			1,657
	Consumer and other	1,154			—				1,154				2,509				—			2,509
	Total noncommercial loans	28,243			4,120				32,363				32,991				5,828			38,819
	Total loans	$	175,955		$	30,801			$	206,756			$	253,388			$	79,782		$	333,170
Allocation of Allowance for Loan and Lease Losses [Table Text Block]	'
	Activity in the allowance for loan and lease losses is summarized as follows:
		Originated			Acquired				Total
		(dollars in thousands)
	Balance at December 31, 2010	$	176,517		$	51,248			$	227,765
	Provision for loan and lease losses	57,799			174,478				232,277
	Loans and leases charged off	(59,287		)	(137,553		)		(196,840		)
	Loans and leases recovered	5,854			1,088				6,942
	Net charge-offs	(53,433		)	(136,465		)		(189,898		)
	Balance at December 31, 2011	180,883			89,261				270,144
	Provision for loan and lease losses	42,046			100,839				142,885
	Loans and leases charged off	(50,208		)	(50,270		)		(100,478		)
	Loans and leases recovered	6,325			142				6,467
	Net charge-offs	(43,883		)	(50,128		)		(94,011		)
	Balance at December 31, 2012	179,046			139,972				319,018
	Reclassification (1)	7,368			—				7,368
	Provision for loan and lease losses	19,289			(51,544		)		(32,255		)
	Loans and leases charged off	(33,118		)	(34,908		)		(68,026		)
	Loans and leases recovered	7,289			—				7,289
	Net charge-offs	(25,829		)	(34,908		)		(60,737		)
	Balance at December 31, 2013	$	179,874		$	53,520			$	233,394
	(1) Reclassification results from enhancements to the ALLL calculation during the second quarter of 2013 that resulted in the allocation of $15.8 million previously designated as 'nonspecific' to other loan classes and the absorption of $7.4 million of the reserve for unfunded commitments related to unfunded, revocable loan commitments into the ALLL. Further discussion is contained in Note A.
	Activity in the allowance for loan and lease losses, ending balances of loans and leases and related allowance by class of loans is summarized as follows:
		Construction			Commercial				Other				Commercial				Lease			Other			Residential			Revolving			Construction			Consumer			Non-			Total
		and land			mortgage				commercial				and				financing						mortgage			mortgage			and land						specific
		development							real estate				industrial																development
		- commercial																											- non-
																													commercial
		(dollars in thousands)
	Originated Loans
	Allowance for loan and lease losses:
	Balance at January 1, 2012	$	5,467		$	67,486			$	2,169			$	23,723			$	3,288		$	1,315		$	8,879		$	27,045		$	1,427		$	25,962		$	14,122		$	180,883
	Provision	9,665			18,198				130				(4,982		)		498			(116		)	(782		)	8,783			1,161			7,763			1,728			42,046
	Charge-offs	(9,546		)	(7,081		)		(254		)		(5,472		)		(361		)	(28		)	(4,790		)	(11,341		)	(1,047		)	(10,288		)	—			(50,208		)
	Recoveries	445			1,626				14				781				96			4			529			698			180			1,952			—			6,325
	Balance at December 31, 2012	6,031			80,229				2,059				14,050				3,521			1,175			3,836			25,185			1,721			25,389			15,850			179,046
	Reclassification (1)	5,141			27,421				(815		)		7,551				(253		)	(1,288		)	5,717			(9,838		)	(478		)	(10,018		)	(15,772		)	7,368
	Provision	2,809			(4,485		)		(32		)		4,333				1,646			308			2,786			6,296			(379		)	6,085			(78		)	19,289
	Charge-offs	(4,685		)	(3,904		)		(312		)		(4,785		)		(272		)	(6		)	(2,387		)	(6,064		)	(392		)	(10,311		)	—			(33,118		)
	Recoveries	1,039			996				109				1,213				107			1			559			660			209			2,396			—			7,289
	Balance at December 31, 2013	$	10,335		$	100,257			$	1,009			$	22,362			$	4,749		$	190		$	10,511		$	16,239		$	681		$	13,541		$	—		$	179,874
	(1) Reclassification results from enhancements to the ALLL calculation during the second quarter of 2013 that resulted in the allocation of $15.8 million previously designated as 'nonspecific' to other loan classes and the absorption of $7.4 million of the reserve for unfunded commitments related to unfunded, revocable loan commitments into the ALLL. Further discussion is contained in Note A.
		Construction			Commercial				Other				Commercial				Lease			Other			Residential			Revolving			Construction			Consumer			Non-			Total
		and land			mortgage				commercial				and industrial				financing						mortgage			mortgage			and land						specific
		development							real estate																				development
		- commercial																											- non-commercial
		(dollars in thousands)
	Allowance for loan and lease losses:
	December 31, 2013
	ALLL for loans and leases individually evaluated for impairment	$	103		$	6,873			$	209			$	771			$	54		$	—		$	1,586		$	372		$	72		$	121		$	—		$	10,161
	ALLL for loans and leases collectively evaluated for impairment	10,232			93,384				800				21,591				4,695			190			8,925			15,867			609			13,420			—			169,713
	Nonspecific ALLL	—			—				—				—				—			—			—			—			—			—			—			—
	Total allowance for loan and lease losses	$	10,335		$	100,257			$	1,009			$	22,362			$	4,749		$	190		$	10,511		$	16,239		$	681		$	13,541		$	—		$	179,874
	December 31, 2012
	ALLL for loans and leases individually evaluated for impairment	$	2,469		$	11,697			$	298			$	2,133			$	202		$	53		$	959		$	1		$	287		$	256		$	—		$	18,355
	ALLL for loans and leases collectively evaluated for impairment	3,562			68,532				1,761				11,917				3,319			1,122			2,877			25,184			1,434			25,133			—			144,841
	Nonspecific ALLL	—			—				—				—				—			—			—			—			—			—			15,850			15,850
	Total allowance for loan and lease losses	$	6,031		$	80,229			$	2,059			$	14,050			$	3,521		$	1,175		$	3,836		$	25,185		$	1,721		$	25,389		$	15,850		$	179,046
		Construction			Commercial				Other				Commercial				Lease			Other			Residential			Revolving			Construction			Consumer			Non-			Total
		and land			mortgage				commercial				and industrial				financing						mortgage			mortgage			and land						specific
		development							real estate																				development
		- commercial																											- non-commercial
		(dollars in thousands)
	Loans and leases:
December 31, 2013
Loans and leases individually evaluated for impairment	$	2,272		$	97,111			$	1,878			$	9,300			$	188		$	—		$	15,539		$	3,596		$	1,108		$	1,154		$	—		$	132,146
Loans and leases collectively evaluated for impairment	317,575			6,265,379				176,876				1,071,858				381,575			175,336			966,882			2,109,689			121,684			385,298			—			11,972,152
Total loan and leases	$	319,847		$	6,362,490			$	178,754			$	1,081,158			$	381,763		$	175,336		$	982,421		$	2,113,285		$	122,792		$	386,452		$	—		$	12,104,298
December 31, 2012
Loans and leases individually evaluated for impairment	$	17,075		$	133,804			$	3,375			$	22,619			$	804		$	707		$	15,836		$	4,203		$	1,321		$	2,509		$	—		$	202,253
Loans and leases collectively evaluated for impairment	292,115			5,895,631				157,605				1,015,911				329,875			124,974			807,053			2,205,930			130,671			414,097			—			11,373,862
Total loan and leases	$	309,190		$	6,029,435			$	160,980			$	1,038,530			$	330,679		$	125,681		$	822,889		$	2,210,133		$	131,992		$	416,606		$	—		$	11,576,115
	Construction			Commercial				Other				Commercial				Lease			Residential			Revolving			Construction			Consumer			Total
	and land			mortgage				commercial				and				financing			mortgage			mortgage			and land			and other
	development -							real estate				industrial													development -
	commercial																								noncommercial
	(dollars in thousands)
Acquired Loans
Allowance for loan and lease losses:
Balance at January 1, 2012	$	16,693		$	39,557			$	16,862			$	5,500			$	13		$	5,433		$	77		$	4,652		$	474		$	89,261
Provision	23,160			34,227				(4,372		)		11,839				(13		)	18,401			10,796			6,520			281			100,839
Charge-offs	(8,667		)	(23,509		)		(1,256		)		(8,442		)		—			(4,139		)	(1,119		)	(2,885		)	(253		)	(50,270		)
Recoveries	—			—				—				—				—			142			—			—			—			142
Balance at December 31, 2012	31,186			50,275				11,234				8,897				—			19,837			9,754			8,287			502			139,972
Provision	(22,942		)	(3,872		)		(8,949		)		470				—			(5,487		)	(6,399		)	(4,170		)	(195		)	(51,544		)
Charge-offs	(6,924		)	(16,497		)		(931		)		(4,092		)		—			(2,548		)	(396		)	(3,435		)	(85		)	(34,908		)
Recoveries	—			—				—				—				—			—			—			—			—			—
Balance at December 31, 2013	$	1,320		$	29,906			$	1,354			$	5,275			$	—		$	11,802		$	2,959		$	682		$	222		$	53,520
Allowance for loan and lease losses:
December 31, 2013
ALLL for loans and leases acquired with deteriorated credit quality	$	1,320		$	29,906			$	1,354			$	5,275			$	—		$	11,802		$	2,959		$	682		$	222		$	53,520
December 31, 2012
ALLL for loans and leases acquired with deteriorated credit quality	31,186			50,275				11,234				8,897				—			19,837			9,754			8,287			502			139,972
Loans and leases:
December 31, 2013
Loans and leases acquired with deteriorated credit quality	78,915			642,891				41,381				17,254				—			213,851			30,834			2,583			1,717			1,029,426
December 31, 2012
Loans and leases acquired with deteriorated credit quality	237,906			1,054,473				107,119				49,463				—			297,926			38,710			20,793			2,845			1,809,235
Allowance for Loan and Lease Losses	'
	ALLOWANCE FOR LOAN AND LEASE LOSSES
	Activity in the allowance for loan and lease losses is summarized as follows:
		Originated			Acquired				Total
		(dollars in thousands)
	Balance at December 31, 2010	$	176,517		$	51,248			$	227,765
	Provision for loan and lease losses	57,799			174,478				232,277
	Loans and leases charged off	(59,287		)	(137,553		)		(196,840		)
	Loans and leases recovered	5,854			1,088				6,942
	Net charge-offs	(53,433		)	(136,465		)		(189,898		)
	Balance at December 31, 2011	180,883			89,261				270,144
	Provision for loan and lease losses	42,046			100,839				142,885
	Loans and leases charged off	(50,208		)	(50,270		)		(100,478		)
	Loans and leases recovered	6,325			142				6,467
	Net charge-offs	(43,883		)	(50,128		)		(94,011		)
	Balance at December 31, 2012	179,046			139,972				319,018
	Reclassification (1)	7,368			—				7,368
	Provision for loan and lease losses	19,289			(51,544		)		(32,255		)
	Loans and leases charged off	(33,118		)	(34,908		)		(68,026		)
	Loans and leases recovered	7,289			—				7,289
	Net charge-offs	(25,829		)	(34,908		)		(60,737		)
	Balance at December 31, 2013	$	179,874		$	53,520			$	233,394
	(1) Reclassification results from enhancements to the ALLL calculation during the second quarter of 2013 that resulted in the allocation of $15.8 million previously designated as 'nonspecific' to other loan classes and the absorption of $7.4 million of the reserve for unfunded commitments related to unfunded, revocable loan commitments into the ALLL. Further discussion is contained in Note A.
	Activity in the allowance for loan and lease losses, ending balances of loans and leases and related allowance by class of loans is summarized as follows:
		Construction			Commercial				Other				Commercial				Lease			Other			Residential			Revolving			Construction			Consumer			Non-			Total
		and land			mortgage				commercial				and				financing						mortgage			mortgage			and land						specific
		development							real estate				industrial																development
		- commercial																											- non-
																													commercial
		(dollars in thousands)
	Originated Loans
	Allowance for loan and lease losses:
	Balance at January 1, 2012	$	5,467		$	67,486			$	2,169			$	23,723			$	3,288		$	1,315		$	8,879		$	27,045		$	1,427		$	25,962		$	14,122		$	180,883
	Provision	9,665			18,198				130				(4,982		)		498			(116		)	(782		)	8,783			1,161			7,763			1,728			42,046
	Charge-offs	(9,546		)	(7,081		)		(254		)		(5,472		)		(361		)	(28		)	(4,790		)	(11,341		)	(1,047		)	(10,288		)	—			(50,208		)
	Recoveries	445			1,626				14				781				96			4			529			698			180			1,952			—			6,325
	Balance at December 31, 2012	6,031			80,229				2,059				14,050				3,521			1,175			3,836			25,185			1,721			25,389			15,850			179,046
	Reclassification (1)	5,141			27,421				(815		)		7,551				(253		)	(1,288		)	5,717			(9,838		)	(478		)	(10,018		)	(15,772		)	7,368
	Provision	2,809			(4,485		)		(32		)		4,333				1,646			308			2,786			6,296			(379		)	6,085			(78		)	19,289
	Charge-offs	(4,685		)	(3,904		)		(312		)		(4,785		)		(272		)	(6		)	(2,387		)	(6,064		)	(392		)	(10,311		)	—			(33,118		)
	Recoveries	1,039			996				109				1,213				107			1			559			660			209			2,396			—			7,289
	Balance at December 31, 2013	$	10,335		$	100,257			$	1,009			$	22,362			$	4,749		$	190		$	10,511		$	16,239		$	681		$	13,541		$	—		$	179,874
	(1) Reclassification results from enhancements to the ALLL calculation during the second quarter of 2013 that resulted in the allocation of $15.8 million previously designated as 'nonspecific' to other loan classes and the absorption of $7.4 million of the reserve for unfunded commitments related to unfunded, revocable loan commitments into the ALLL. Further discussion is contained in Note A.
		Construction			Commercial				Other				Commercial				Lease			Other			Residential			Revolving			Construction			Consumer			Non-			Total
		and land			mortgage				commercial				and industrial				financing						mortgage			mortgage			and land						specific
		development							real estate																				development
		- commercial																											- non-commercial
		(dollars in thousands)
	Allowance for loan and lease losses:
	December 31, 2013
	ALLL for loans and leases individually evaluated for impairment	$	103		$	6,873			$	209			$	771			$	54		$	—		$	1,586		$	372		$	72		$	121		$	—		$	10,161
	ALLL for loans and leases collectively evaluated for impairment	10,232			93,384				800				21,591				4,695			190			8,925			15,867			609			13,420			—			169,713
	Nonspecific ALLL	—			—				—				—				—			—			—			—			—			—			—			—
	Total allowance for loan and lease losses	$	10,335		$	100,257			$	1,009			$	22,362			$	4,749		$	190		$	10,511		$	16,239		$	681		$	13,541		$	—		$	179,874
	December 31, 2012
	ALLL for loans and leases individually evaluated for impairment	$	2,469		$	11,697			$	298			$	2,133			$	202		$	53		$	959		$	1		$	287		$	256		$	—		$	18,355
	ALLL for loans and leases collectively evaluated for impairment	3,562			68,532				1,761				11,917				3,319			1,122			2,877			25,184			1,434			25,133			—			144,841
	Nonspecific ALLL	—			—				—				—				—			—			—			—			—			—			15,850			15,850
	Total allowance for loan and lease losses	$	6,031		$	80,229			$	2,059			$	14,050			$	3,521		$	1,175		$	3,836		$	25,185		$	1,721		$	25,389		$	15,850		$	179,046
		Construction			Commercial				Other				Commercial				Lease			Other			Residential			Revolving			Construction			Consumer			Non-			Total
		and land			mortgage				commercial				and industrial				financing						mortgage			mortgage			and land						specific
		development							real estate																				development
		- commercial																											- non-commercial
		(dollars in thousands)
Loans and leases:
December 31, 2013
Loans and leases individually evaluated for impairment	$	2,272		$	97,111			$	1,878			$	9,300			$	188		$	—		$	15,539		$	3,596		$	1,108		$	1,154		$	—		$	132,146
Loans and leases collectively evaluated for impairment	317,575			6,265,379				176,876				1,071,858				381,575			175,336			966,882			2,109,689			121,684			385,298			—			11,972,152
Total loan and leases	$	319,847		$	6,362,490			$	178,754			$	1,081,158			$	381,763		$	175,336		$	982,421		$	2,113,285		$	122,792		$	386,452		$	—		$	12,104,298
December 31, 2012
Loans and leases individually evaluated for impairment	$	17,075		$	133,804			$	3,375			$	22,619			$	804		$	707		$	15,836		$	4,203		$	1,321		$	2,509		$	—		$	202,253
Loans and leases collectively evaluated for impairment	292,115			5,895,631				157,605				1,015,911				329,875			124,974			807,053			2,205,930			130,671			414,097			—			11,373,862
Total loan and leases	$	309,190		$	6,029,435			$	160,980			$	1,038,530			$	330,679		$	125,681		$	822,889		$	2,210,133		$	131,992		$	416,606		$	—		$	11,576,115
	Construction			Commercial				Other				Commercial				Lease			Residential			Revolving			Construction			Consumer			Total
	and land			mortgage				commercial				and				financing			mortgage			mortgage			and land			and other
	development -							real estate				industrial													development -
	commercial																								noncommercial
	(dollars in thousands)
Acquired Loans
Allowance for loan and lease losses:
Balance at January 1, 2012	$	16,693		$	39,557			$	16,862			$	5,500			$	13		$	5,433		$	77		$	4,652		$	474		$	89,261
Provision	23,160			34,227				(4,372		)		11,839				(13		)	18,401			10,796			6,520			281			100,839
Charge-offs	(8,667		)	(23,509		)		(1,256		)		(8,442		)		—			(4,139		)	(1,119		)	(2,885		)	(253		)	(50,270		)
Recoveries	—			—				—				—				—			142			—			—			—			142
Balance at December 31, 2012	31,186			50,275				11,234				8,897				—			19,837			9,754			8,287			502			139,972
Provision	(22,942		)	(3,872		)		(8,949		)		470				—			(5,487		)	(6,399		)	(4,170		)	(195		)	(51,544		)
Charge-offs	(6,924		)	(16,497		)		(931		)		(4,092		)		—			(2,548		)	(396		)	(3,435		)	(85		)	(34,908		)
Recoveries	—			—				—				—				—			—			—			—			—			—
Balance at December 31, 2013	$	1,320		$	29,906			$	1,354			$	5,275			$	—		$	11,802		$	2,959		$	682		$	222		$	53,520
Allowance for loan and lease losses:
December 31, 2013
ALLL for loans and leases acquired with deteriorated credit quality	$	1,320		$	29,906			$	1,354			$	5,275			$	—		$	11,802		$	2,959		$	682		$	222		$	53,520
December 31, 2012
ALLL for loans and leases acquired with deteriorated credit quality	31,186			50,275				11,234				8,897				—			19,837			9,754			8,287			502			139,972
Loans and leases:
December 31, 2013
Loans and leases acquired with deteriorated credit quality	78,915			642,891				41,381				17,254				—			213,851			30,834			2,583			1,717			1,029,426
December 31, 2012
Loans and leases acquired with deteriorated credit quality	237,906			1,054,473				107,119				49,463				—			297,926			38,710			20,793			2,845			1,809,235
The following tables provide information on originated impaired loans and leases, exclusive of loans and leases evaluated collectively as a homogeneous group, including interest income recognized in the period during which the loans and leases were considered impaired.
	With a			With no				Total				Unpaid				Related
	recorded			recorded								principal				allowance
	allowance			allowance								balance				recorded
	(dollars in thousands)
December 31, 2013
Impaired originated loans and leases
Construction and land development - commercial	$	1,025		$	1,247			$	2,272			$	7,306			$	103
Commercial mortgage	57,819			39,292				97,111				103,522				6,873
Other commercial real estate	783			1,095				1,878				2,279				209
Commercial and industrial	7,197			2,103				9,300				10,393				771
Lease financing	133			55				188				188				54
Residential mortgage	11,534			4,005				15,539				15,939				1,586
Revolving mortgage	3,382			214				3,596				3,596				372
Construction and land development - noncommercial	651			457				1,108				1,108				72
Consumer	1,154			—				1,154				1,154				121
Total impaired originated loans and leases	$	83,678		$	48,468			$	132,146			$	145,485			$	10,161
December 31, 2012
Impaired originated loans and leases
Construction and land development - commercial	$	5,941		$	11,134			$	17,075			$	32,898			$	2,469
Commercial mortgage	39,648			94,156				133,804				136,743				11,697
Other commercial real estate	1,425			1,950				3,375				3,475				298
Commercial and industrial	7,429			15,190				22,619				22,619				2,133
Lease financing	665			139				804				804				202
Other	—			707				707				707				53
Residential mortgage	9,346			6,490				15,836				16,229				959
Revolving mortgage	1,238			2,965				4,203				4,203				1
Construction and land development - noncommercial	1,162			159				1,321				1,321				287
Consumer	1,609			900				2,509				2,509				256
Nonspecific	—			—				—				—				—
Total impaired originated loans and leases	$	68,463		$	133,790			$	202,253			$	221,508			$	18,355
	YTD			YTD Interest Income Recognized
	Average
	Balance
	(dollars in thousands)
Year ended December 31, 2013
Originated impaired loans and leases:
Construction and land development - commercial	$	6,414		$	270
Commercial mortgage	105,628			5,702
Other commercial real estate	2,658			144
Commercial and industrial	12,772			642
Lease financing	350			22
Other	—			—
Residential mortgage	15,470			444
Revolving mortgage	5,653			485
Construction and land development - noncommercial	958			55
Consumer	1,427			53
Total originated impaired loans and leases	$	151,330		$	7,817
Year ended December 31, 2012
Originated impaired loans and leases:
Construction and land development - commercial	$	22,493		$	399
Commercial mortgage	96,082			4,630
Other commercial real estate	2,690			142
Commercial and industrial	13,658			788
Lease financing	497			37
Other	424			23
Residential mortgage	14,951			586
Revolving mortgage	2,931			68
Construction and land development - noncommercial	2,850			41
Consumer	1,850			21
Total originated impaired loans and leases	$	158,426		$	6,735
Year ended December 31, 2011
Originated impaired loans and leases:
Construction and land development - commercial	$	26,612		$	56
Commercial mortgage	65,729			1,330
Other commercial real estate	1,368			55
Commercial and industrial	12,984			456
Lease financing	587			21
Other	38			—
Residential mortgage	9,252			300
Revolving mortgage	—			—
Construction and land development - noncommercial	2,022			105
Consumer	636			18
Total originated impaired loans and leases	$	119,228		$	2,341
At December 31, 2013, acquired loans that have had an adverse change in expected cash flows since the date of acquisition equaled $459.9 million, for which $53.5 million in related allowance for loan losses has been recorded.
Troubled Debt Restructurings
BancShares accounts for certain loan modifications or restructurings as troubled debt restructurings (TDRs). In general, the modification or restructuring of a loan is considered a TDR if, for economic reasons or legal reasons related to a borrower's financial difficulties, a concession is granted to the borrower that creditors would not otherwise consider. Concessions may relate to the contractual interest rate, maturity date, payment structure or other actions. In accordance with GAAP, loans acquired under ASC 310-30, Loans and Debt Securities Acquired
with Deteriorated Credit Quality, are not initially considered to be TDRs, but can be classified as such if a modification is made subsequent to acquisition. The following table provides a summary of total TDRs by accrual status.
	December 31, 2013											December 31, 2012
	Accruing			Nonaccruing				Total				Accruing				Nonaccruing			Total
	(dollars in thousands)
Commercial loans
Construction and land development - commercial	$	21,032		$	1,002			$	22,034			$	47,368			$	26,920		$	74,288
Commercial mortgage	113,323			23,387				136,710				151,728				37,603			189,331
Other commercial real estate	3,470			1,150				4,620				10,137				2,194			12,331
Commercial and industrial	9,838			1,142				10,980				10,940				7,237			18,177
Lease	49			—				49				224				—			224
Total commercial loans	147,712			26,681				174,393				220,397				73,954			294,351
Noncommercial
Residential	23,343			3,663				27,006				28,777				5,828			34,605
Revolving mortgage	3,095			—				3,095				48				—			48
Construction and land development - noncommercial	651			457				1,108				1,657				—			1,657
Consumer and other	1,154			—				1,154				2,509				—			2,509
Total noncommercial loans	28,243			4,120				32,363				32,991				5,828			38,819
Total loans	$	175,955		$	30,801			$	206,756			$	253,388			$	79,782		$	333,170
Total troubled debt restructurings at December 31, 2013, equaled $206.8 million, of which $102.3 million were acquired and $104.4 million were originated. TDRs at December 31, 2012, totaled $333.2 million, which consisted of $193.2 million acquired and $140.0 million that were originated.
The majority of TDRs are included in the special mention, substandard or doubtful grading categories, which results in more elevated loss expectations when determining the expected cash flows that are used to determine the allowance for loan losses associated with these loans. When a restructured loan subsequently defaults, it is evaluated and downgraded if appropriate. The more severely graded the loan, the lower the estimated expected cash flows and the greater the allowance recorded. Further, TDRs over $500,000 and graded substandard or lower are evaluated individually for impairment through a review of collateral values.
The following tables provide the types of TDRs made during the three months ended December 31, 2013, and 2012, as well as a summary of loans that were modified as a TDR during the 12 months ended December 31, 2013, and 2012 that subsequently defaulted during the three months ended December 31, 2013, and 2012. BancShares defines payment default as movement of the TDR to nonaccrual status, foreclosure or charge-off, whichever occurs first.
.
	Three months ended December 31, 2013									Three months ended December 31, 2012
	All restructurings				Restructurings with payment default					All restructurings					Restructurings with payment default
	Number of Loans	Recorded investment at period end			Number of Loans	Recorded investment at period end				Number of Loans	Recorded investment at period end				Number of Loans	Recorded investment at period end
	(dollars in thousands)
Originated loans
Interest only period provided
Commercial mortgage	1	$	305		1	$	—			1	$	861			1	$	595
Commercial and industrial	1	198			—	—				2	337				1	746
Residential mortgage	—	—			—	—				—	—				1	559
Construction and land development-noncommercial	—	—			—	—				1	476				—	—
Total interest only	2	503			1	—				4	1,674				3	1,900
Loan term extension
Commercial mortgage	1	770			—	—				7	2,319				3	122
Commercial and industrial	—	—			—	—				1	24				1	24
Residential mortgage	3	241			—	—				1	16				1	108
Consumer	—	—			—	—				1	8				—	—
Total loan term extension	4	1,011			—	—				10	2,367				5	254
Below market interest rate
Commercial mortgage	8	3,964			1	295				8	3,444				1	490
Commercial and industrial	—	—			—	—				3	311				—	—
Residential mortgage	6	347			—	—				2	130				1	59
Revolving mortgage	6	496			2	378				—	—				—	—
Consumer	—	—			—	—				2	16				—	—
Total below market interest rate	20	4,807			3	673				15	3,901				2	549
Discharged from bankruptcy
Residential mortgage	1	32			—	—				—	—				—	—
Revolving mortgage	—	—			3	130				—	—				—	—
Total discharged from bankruptcy	1	32			3	130				—	—				—	—
Total originated restructurings	27	$	6,353		7	$	803			29	$	7,942			10	$	2,703
	Three months ended December 31, 2013									Three months ended December 31, 2012
	All restructurings				Restructurings with payment default					All restructurings					Restructurings with payment default
	Number of loans	Recorded investment at period end			Number of loans	Recorded investment at period end				Number of loans	Recorded investment at period end				Number of loans	Recorded investment at period end
	(dollars in thousands)
Acquired loans
Interest only period provided
Commercial mortgage	2	$	403		—	$	—			—	$	—			—	$	—
Other commercial real estate	—	—			—	—				1	2,994				—	—
Total interest only	2	403			—	—				1	2,994				—	—
Loan term extension
Construction and land development - commercial	1	100			—	—				—	—				—	—
Commercial mortgage	—	—			1	157				—	—				—	—
Residential mortgage	—	—			—	—				—	—				1	66
Total loan term extension	1	100			1	157				—	—				1	66
Below market interest rate
Construction and land development - commercial	—	—			—	—				3	17,615				3	7,050
Commercial mortgage	1	165			2	2,183				4	2,715				1	1,229
Commercial and industrial	—	—			—	—				1	253				—	—
Residential mortgage	1	100			—	—				3	2,542				3	122
Total below market interest rate	2	265			2	2,183				11	23,125				7	8,401
Other concession
Residential mortgage	—	—			—	—				—	—				1	54
Total other concession	—	—			—	—				—	—				1	54
Total restructurings	5	$	768		3	$	2,340			12	$	26,119			9	$	8,521
For the three months ended December 31, 2013, the recorded investment in troubled debt restructurings subsequent to modification was not materially impacted by the modification since forgiveness of principal is not a restructuring option frequently used by BancShares.
The following tables provide the types of TDRs made during the twelve months ended December 31, 2013, and 2012, as well as a summary of loans that were modified as a TDR during the 12 months ended December 31, 2013, and 2012 that subsequently defaulted during the
twelve months ended December 31, 2013, and 2012. BancShares defines payment default as movement of the TDR to nonaccrual status, foreclosure or charge-off, whichever occurs first.
	Year ended December 31, 2013									Year ended December 31, 2012
	All restructurings				Restructurings with payment default					All restructurings					Restructurings with payment default
	Number of Loans	Recorded investment at period end			Number of Loans	Recorded investment at period end				Number of Loans	Recorded investment at period end				Number of Loans	Recorded investment at period end
	(dollars in thousands)
Originated loans
Interest only period provided
Construction and land development - commercial	—	$	—		—	$	—			2	$	316			—	$	—
Commercial mortgage	6	1,520			1	—				12	3,891				3	1,440
Commercial and industrial	2	397			—	—				2	574				—	—
Other commercial real estate	1	—			—	—				—	—				—	—
Residential mortgage	1	630			—	—				2	893				2	893
Total interest only	10	2,547			1	—				18	5,674				5	2,333
Loan term extension
Construction and land development - commercial	—	—			—	—				2	7,667				—	—
Commercial mortgage	9	3,270			—	—				50	16,818				13	3,456
Other commercial real estate	—	—			—	—				3	1,318				—	—
Commercial and industrial	1	47			—	—				11	1,363				4	169
Lease financing	—	—			—	—				3	166				—	—
Residential mortgage	11	539			—	—				9	521				2	155
Construction and land development - noncommercial	—	—			—	—				1	158				—	—
Consumer	2	62			—	—				7	1,132				—	—
Total loan term extension	23	3,918			—	—				86	29,143				19	3,780
Below market interest rate
Construction and land development - commercial	3	609			—	—				1	227				—	—
Commercial mortgage	28	10,873			1	295				12	7,333				1	490
Commercial and industrial	3	851			—	—				11	1,584				1	—
Other commercial real estate	2	378			—	—				—	—				—	—
Residential mortgage	21	1,235			—	—				13	1,887				5	828
Revolving mortgage	13	801			3	451				1	48				1	48
Construction & land development - noncommercial	4	269			—	—				—	—				—	—
Consumer	3	219			—	—				4	17				1	—
Total below market interest rate	77	15,235			4	746				42	11,096				9	1,366
Discharged from bankruptcy
Residential mortgage	7	510			2	60				—	—				—	—
Revolving mortgage	31	2,577			6	274				—	—				—	—
Total discharged from bankruptcy	38	3,087			8	334				—	—				—	—
Other concession
Commercial mortgage	—	—			—	—				3	1,036				—	—
Residential mortgage	—	—			—	—				1	384				—	—
Total other concession	—	—			—	—				4	1,420				—	—
Total originated restructurings	148	$	24,787		13	$	1,080			150	$	47,333			33	$	7,479
	Year ended December 31, 2013									Year ended December 31, 2012
	All restructurings				Restructurings with payment default					All restructurings					Restructurings with payment default
	Number of Loans	Recorded investment at period end			Number of Loans	Recorded investment at period end				Number of Loans	Recorded investment at period end				Number of Loans	Recorded investment at period end
	(dollars in thousands)
Acquired loans
Interest only period provided
Construction and land development - commercial	1	$	2,590		1	$	2,590			2	$	496			1	$	356
Commercial mortgage	5	2,880			1	299				4	10,404				1	234
Other commercial real estate	—	—			—	—				1	2,994				—	—
Commercial and industrial	1	21			—	—				1	170				—	—
Residential mortgage	1	39			—	—				1	98				—	—
Total interest only	8	5,530			2	2,889				9	14,162				2	590
Loan term extension
Construction and land development - commercial	6	2,247			—	—				9	7,294				1	3,703
Commercial mortgage	1	157			1	157				4	2,584				—	—
Commercial and industrial	2	1,080			—	—				2	158				—	—
Residential mortgage	3	5,153			2	5,120				4	5,111				2	4,629
Total loan term extension	12	8,637			3	5,277				19	15,147				3	8,332
Below market interest rate
Construction and land development - commercial	2	106			—	—				13	19,953				5	8,781
Commercial mortgage	12	7,513			4	2,418				18	19,100				6	3,906
Other commercial real estate	—	—			—	—				2	1,954				—	—
Commercial and industrial	2	493			—	—				5	1,299				2	—
Residential mortgage	10	2,088			5	1,475				21	4,622				10	490
Construction and land development - noncommercial	—	—			—	—				1	—				1	—
Total below market interest rate	26	10,200			9	3,893				60	46,928				24	13,177
Other concession
Commercial mortgage	1	110			—	—				—	—				—	—
Residential mortgage	—	—			—	—				1	54				1	54
Total other concession	1	110			—	—				1	54				1	54
Total acquired restructurings	47	$	24,477		14	$	12,059			89	$	76,291			30	$	22,153
The following tables provide information on originated impaired loans and leases, exclusive of loans and leases evaluated collectively as a homogeneous group, including interest income recognized in the period during which the loans and leases were considered impaired.
	With a			With no				Total				Unpaid				Related
	recorded			recorded								principal				allowance
	allowance			allowance								balance				recorded
	(dollars in thousands)
December 31, 2013
Impaired originated loans and leases
Construction and land development - commercial	$	1,025		$	1,247			$	2,272			$	7,306			$	103
Commercial mortgage	57,819			39,292				97,111				103,522				6,873
Other commercial real estate	783			1,095				1,878				2,279				209
Commercial and industrial	7,197			2,103				9,300				10,393				771
Lease financing	133			55				188				188				54
Residential mortgage	11,534			4,005				15,539				15,939				1,586
Revolving mortgage	3,382			214				3,596				3,596				372
Construction and land development - noncommercial	651			457				1,108				1,108				72
Consumer	1,154			—				1,154				1,154				121
Total impaired originated loans and leases	$	83,678		$	48,468			$	132,146			$	145,485			$	10,161
December 31, 2012
Impaired originated loans and leases
Construction and land development - commercial	$	5,941		$	11,134			$	17,075			$	32,898			$	2,469
Commercial mortgage	39,648			94,156				133,804				136,743				11,697
Other commercial real estate	1,425			1,950				3,375				3,475				298
Commercial and industrial	7,429			15,190				22,619				22,619				2,133
Lease financing	665			139				804				804				202
Other	—			707				707				707				53
Residential mortgage	9,346			6,490				15,836				16,229				959
Revolving mortgage	1,238			2,965				4,203				4,203				1
Construction and land development - noncommercial	1,162			159				1,321				1,321				287
Consumer	1,609			900				2,509				2,509				256
Nonspecific	—			—				—				—				—
Total impaired originated loans and leases	$	68,463		$	133,790			$	202,253			$	221,508			$	18,355
	YTD			YTD Interest Income Recognized
	Average
	Balance
	(dollars in thousands)
Year ended December 31, 2013
Originated impaired loans and leases:
Construction and land development - commercial	$	6,414		$	270
Commercial mortgage	105,628			5,702
Other commercial real estate	2,658			144
Commercial and industrial	12,772			642
Lease financing	350			22
Other	—			—
Residential mortgage	15,470			444
Revolving mortgage	5,653			485
Construction and land development - noncommercial	958			55
Consumer	1,427			53
Total originated impaired loans and leases	$	151,330		$	7,817
Year ended December 31, 2012
Originated impaired loans and leases:
Construction and land development - commercial	$	22,493		$	399
Commercial mortgage	96,082			4,630
Other commercial real estate	2,690			142
Commercial and industrial	13,658			788
Lease financing	497			37
Other	424			23
Residential mortgage	14,951			586
Revolving mortgage	2,931			68
Construction and land development - noncommercial	2,850			41
Consumer	1,850			21
Total originated impaired loans and leases	$	158,426		$	6,735
Year ended December 31, 2011
Originated impaired loans and leases:
Construction and land development - commercial	$	26,612		$	56
Commercial mortgage	65,729			1,330
Other commercial real estate	1,368			55
Commercial and industrial	12,984			456
Lease financing	587			21
Other	38			—
Residential mortgage	9,252			300
Revolving mortgage	—			—
Construction and land development - noncommercial	2,022			105
Consumer	636			18
Total originated impaired loans and leases	$	119,228		$	2,341
Troubled Debt Restructurings on Financing Receivables	'
	The following tables provide the types of TDRs made during the three months ended December 31, 2013, and 2012, as well as a summary of loans that were modified as a TDR during the 12 months ended December 31, 2013, and 2012 that subsequently defaulted during the three months ended December 31, 2013, and 2012. BancShares defines payment default as movement of the TDR to nonaccrual status, foreclosure or charge-off, whichever occurs first.
	.
		Three months ended December 31, 2013									Three months ended December 31, 2012
		All restructurings				Restructurings with payment default					All restructurings					Restructurings with payment default
		Number of Loans	Recorded investment at period end			Number of Loans	Recorded investment at period end				Number of Loans	Recorded investment at period end				Number of Loans	Recorded investment at period end
		(dollars in thousands)
	Originated loans
	Interest only period provided
	Commercial mortgage	1	$	305		1	$	—			1	$	861			1	$	595
	Commercial and industrial	1	198			—	—				2	337				1	746
	Residential mortgage	—	—			—	—				—	—				1	559
	Construction and land development-noncommercial	—	—			—	—				1	476				—	—
	Total interest only	2	503			1	—				4	1,674				3	1,900
	Loan term extension
	Commercial mortgage	1	770			—	—				7	2,319				3	122
	Commercial and industrial	—	—			—	—				1	24				1	24
	Residential mortgage	3	241			—	—				1	16				1	108
	Consumer	—	—			—	—				1	8				—	—
	Total loan term extension	4	1,011			—	—				10	2,367				5	254
	Below market interest rate
	Commercial mortgage	8	3,964			1	295				8	3,444				1	490
	Commercial and industrial	—	—			—	—				3	311				—	—
	Residential mortgage	6	347			—	—				2	130				1	59
	Revolving mortgage	6	496			2	378				—	—				—	—
	Consumer	—	—			—	—				2	16				—	—
	Total below market interest rate	20	4,807			3	673				15	3,901				2	549
	Discharged from bankruptcy
	Residential mortgage	1	32			—	—				—	—				—	—
	Revolving mortgage	—	—			3	130				—	—				—	—
	Total discharged from bankruptcy	1	32			3	130				—	—				—	—
	Total originated restructurings	27	$	6,353		7	$	803			29	$	7,942			10	$	2,703
		Three months ended December 31, 2013									Three months ended December 31, 2012
		All restructurings				Restructurings with payment default					All restructurings					Restructurings with payment default
		Number of loans	Recorded investment at period end			Number of loans	Recorded investment at period end				Number of loans	Recorded investment at period end				Number of loans	Recorded investment at period end
		(dollars in thousands)
	Acquired loans
	Interest only period provided
	Commercial mortgage	2	$	403		—	$	—			—	$	—			—	$	—
	Other commercial real estate	—	—			—	—				1	2,994				—	—
	Total interest only	2	403			—	—				1	2,994				—	—
	Loan term extension
	Construction and land development - commercial	1	100			—	—				—	—				—	—
	Commercial mortgage	—	—			1	157				—	—				—	—
	Residential mortgage	—	—			—	—				—	—				1	66
	Total loan term extension	1	100			1	157				—	—				1	66
	Below market interest rate
	Construction and land development - commercial	—	—			—	—				3	17,615				3	7,050
	Commercial mortgage	1	165			2	2,183				4	2,715				1	1,229
	Commercial and industrial	—	—			—	—				1	253				—	—
	Residential mortgage	1	100			—	—				3	2,542				3	122
	Total below market interest rate	2	265			2	2,183				11	23,125				7	8,401
	Other concession
	Residential mortgage	—	—			—	—				—	—				1	54
	Total other concession	—	—			—	—				—	—				1	54
	Total restructurings	5	$	768		3	$	2,340			12	$	26,119			9	$	8,521
	For the three months ended December 31, 2013, the recorded investment in troubled debt restructurings subsequent to modification was not materially impacted by the modification since forgiveness of principal is not a restructuring option frequently used by BancShares.
	The following tables provide the types of TDRs made during the twelve months ended December 31, 2013, and 2012, as well as a summary of loans that were modified as a TDR during the 12 months ended December 31, 2013, and 2012 that subsequently defaulted during the
	twelve months ended December 31, 2013, and 2012. BancShares defines payment default as movement of the TDR to nonaccrual status, foreclosure or charge-off, whichever occurs first.
		Year ended December 31, 2013									Year ended December 31, 2012
		All restructurings				Restructurings with payment default					All restructurings					Restructurings with payment default
		Number of Loans	Recorded investment at period end			Number of Loans	Recorded investment at period end				Number of Loans	Recorded investment at period end				Number of Loans	Recorded investment at period end
		(dollars in thousands)
	Originated loans
Interest only period provided
Construction and land development - commercial	—	$	—		—	$	—			2	$	316			—	$	—
Commercial mortgage	6	1,520			1	—				12	3,891				3	1,440
Commercial and industrial	2	397			—	—				2	574				—	—
Other commercial real estate	1	—			—	—				—	—				—	—
Residential mortgage	1	630			—	—				2	893				2	893
Total interest only	10	2,547			1	—				18	5,674				5	2,333
Loan term extension
Construction and land development - commercial	—	—			—	—				2	7,667				—	—
Commercial mortgage	9	3,270			—	—				50	16,818				13	3,456
Other commercial real estate	—	—			—	—				3	1,318				—	—
Commercial and industrial	1	47			—	—				11	1,363				4	169
Lease financing	—	—			—	—				3	166				—	—
Residential mortgage	11	539			—	—				9	521				2	155
Construction and land development - noncommercial	—	—			—	—				1	158				—	—
Consumer	2	62			—	—				7	1,132				—	—
Total loan term extension	23	3,918			—	—				86	29,143				19	3,780
Below market interest rate
Construction and land development - commercial	3	609			—	—				1	227				—	—
Commercial mortgage	28	10,873			1	295				12	7,333				1	490
Commercial and industrial	3	851			—	—				11	1,584				1	—
Other commercial real estate	2	378			—	—				—	—				—	—
Residential mortgage	21	1,235			—	—				13	1,887				5	828
Revolving mortgage	13	801			3	451				1	48				1	48
Construction & land development - noncommercial	4	269			—	—				—	—				—	—
Consumer	3	219			—	—				4	17				1	—
Total below market interest rate	77	15,235			4	746				42	11,096				9	1,366
Discharged from bankruptcy
Residential mortgage	7	510			2	60				—	—				—	—
Revolving mortgage	31	2,577			6	274				—	—				—	—
Total discharged from bankruptcy	38	3,087			8	334				—	—				—	—
Other concession
Commercial mortgage	—	—			—	—				3	1,036				—	—
Residential mortgage	—	—			—	—				1	384				—	—
Total other concession	—	—			—	—				4	1,420				—	—
Total originated restructurings	148	$	24,787		13	$	1,080			150	$	47,333			33	$	7,479
	Year ended December 31, 2013									Year ended December 31, 2012
	All restructurings				Restructurings with payment default					All restructurings					Restructurings with payment default
	Number of Loans	Recorded investment at period end			Number of Loans	Recorded investment at period end				Number of Loans	Recorded investment at period end				Number of Loans	Recorded investment at period end
	(dollars in thousands)
Acquired loans
Interest only period provided
Construction and land development - commercial	1	$	2,590		1	$	2,590			2	$	496			1	$	356
Commercial mortgage	5	2,880			1	299				4	10,404				1	234
Other commercial real estate	—	—			—	—				1	2,994				—	—
Commercial and industrial	1	21			—	—				1	170				—	—
Residential mortgage	1	39			—	—				1	98				—	—
Total interest only	8	5,530			2	2,889				9	14,162				2	590
Loan term extension
Construction and land development - commercial	6	2,247			—	—				9	7,294				1	3,703
Commercial mortgage	1	157			1	157				4	2,584				—	—
Commercial and industrial	2	1,080			—	—				2	158				—	—
Residential mortgage	3	5,153			2	5,120				4	5,111				2	4,629
Total loan term extension	12	8,637			3	5,277				19	15,147				3	8,332
Below market interest rate
Construction and land development - commercial	2	106			—	—				13	19,953				5	8,781
Commercial mortgage	12	7,513			4	2,418				18	19,100				6	3,906
Other commercial real estate	—	—			—	—				2	1,954				—	—
Commercial and industrial	2	493			—	—				5	1,299				2	—
Residential mortgage	10	2,088			5	1,475				21	4,622				10	490
Construction and land development - noncommercial	—	—			—	—				1	—				1	—
Total below market interest rate	26	10,200			9	3,893				60	46,928				24	13,177
Other concession
Commercial mortgage	1	110			—	—				—	—				—	—
Residential mortgage	—	—			—	—				1	54				1	54
Total other concession	1	110			—	—				1	54				1	54
Total acquired restructurings	47	$	24,477		14	$	12,059			89	$	76,291			30	$	22,153

Premises_and_Equipment_Tables

Premises and Equipment (Tables)	12 Months Ended
	Dec. 31, 2013
Property, Plant and Equipment [Abstract]	'
Property, Plant and Equipment [Table Text Block]	'
	Major classifications of premises and equipment at December 31, 2013, and 2012, are summarized as follows:
		2013		2012
		(dollars in thousands)
	Land	$	204,259	$	202,168
	Premises and leasehold improvements	875,511		840,149
	Furniture and equipment	394,348		390,345
	Total	1,474,118		1,432,662
	Less accumulated depreciation and amortization	597,596		549,894
	Total premises and equipment	$	876,522	$	882,768
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]	'
	Future minimum rental commitments for noncancellable operating leases with initial or remaining terms of one or more years consisted of the following at December 31, 2013:
	Year ended December 31
	(dollars in thousands)
	2014	$	17,181
	2015	13,004
	2016	8,539
	2017	5,969
	2018	4,574
	Thereafter	41,554
	Total minimum payments	$	90,821

Other_Real_Estate_Owned_Tables

Other Real Estate Owned (Tables)	12 Months Ended
	Dec. 31, 2013
Banking and Thrift [Abstract]	'
Changes in other real estate owned	'
	The following table explains changes in other real estate owned during 2013 and 2012.
		Covered			Noncovered			Total
		(dollars in thousands)
	Balance at January 1, 2012	$	148,599		$	50,399		$	198,998
	Additions	105,059			35,586			140,645
	Sales	(124,435		)	(33,564		)	(157,999		)
	Writedowns	(26,646		)	(8,908		)	(35,554		)
	Balance at December 31, 2012	102,577			43,513			146,090
	Additions	59,034			33,908			92,942
	Sales	(96,744		)	(36,168		)	(132,912		)
	Writedowns	(17,786		)	(4,355		)	(22,141		)
	Balance at December 31, 2013	$	47,081		$	36,898		$	83,979

Receivable_from_FDIC_for_Loss_1

Receivable from FDIC for Loss Share Agreements (Tables)	12 Months Ended
	Dec. 31, 2013
Receivable From FDIC For Loss Share Agreements [Abstract]	'
Changes in Receivable From FDIC	'
	The following table presents the changes in the receivable for loss share agreements:
		Year ended December 31
		2013			2012			2011
		(dollars in thousands)
	Balance at January 1	$	270,192		$	617,377		$	671,023
	Additional receivable from acquisitions	—			—			316,932
	Amortization of discounts and premiums, net	(85,651		)	(102,394		)	(32,960		)
	Cash payments from FDIC	(19,373		)	(251,972		)	(293,067		)
	Post-acquisition and other adjustments, net	(71,771		)	7,181			(44,551		)
	Balance at December 31	$	93,397		$	270,192		$	617,377

Deposits_Tables

Deposits (Tables)	12 Months Ended
	Dec. 31, 2013
Deposits [Abstract]	'
Deposits	'
	Deposits at December 31 are summarized as follows:
		2013		2012
		(dollars in thousands)
	Demand	$	5,241,817	$	4,885,700
	Checking With Interest	2,445,972		2,363,317
	Money market accounts	6,306,942		6,357,309
	Savings	1,004,097		905,456
	Time	2,875,238		3,574,243
	Total deposits	$	17,874,066	$	18,086,025
Maturities Of Time Deposits	'
	At December 31, 2013, the scheduled maturities of time deposits were:
	Year	Scheduled maturities
		(dollars in thousands)
	2014	$	1,920,998
	2015	532,711
	2016	296,073
	2017	87,179
	2018	38,277
	Thereafter	—
	Total time deposits	$	2,875,238

ShortTerm_Borrowings_Tables

Short-Term Borrowings (Tables)	12 Months Ended
	Dec. 31, 2013
Short-term Debt [Abstract]	'
Schedule of Short-term Debt	'
	Short-term borrowings at December 31 are as follows:
		2013		2012
		(dollars in thousands)
	Master notes	$	411,907	$	399,047
	Repurchase agreements	96,960		111,907
	Notes payable to Federal Home Loan Banks	—		55,000
	Federal funds purchased	2,551		2,551
	Total short-term borrowings	$	511,418	$	568,505

LongTerm_Obligations_Tables

Long-Term Obligations (Tables)	12 Months Ended
	Dec. 31, 2013
LONG-TERM OBLIGATIONS [Abstract]	'
Schedule of Long-term Debt Instruments	'
	Long-term obligations at December 31 include:
		2013		2012
		(dollars in thousands)
	Junior subordinated debenture at 3-month LIBOR plus 1.75 percent maturing June 30, 2036	96,392		96,392
	Subordinated notes payable at 5.125 percent maturing June 1, 2015	125,000		125,000
	Obligations under capitalized leases extending to June 2026	6,515		10,020
	Notes payable to Federal Home Loan Bank of Atlanta with rates ranging from 2.00 percent to 3.88 percent and maturing through September 2021	240,283		170,299
	Note payable to the Federal Home Loan Bank of Seattle with a rate of 4.74 percent and a maturity date of July 2017	10,000		10,000
	Unamortized acquisition accounting adjustments	2,449		3,069
	Other long-term debt	30,130		30,141
	Total long-term obligations	$	510,769	$	444,921
Schedule of Maturities of Long-term Debt	'
	Long-term obligations maturing in each of the five years subsequent to December 31, 2013, include:
	Year	Scheduled maturities
	(dollars in thousands)
	2014	$	2,908
	2015	205,422
	2016	—
	2017	11,005
	2018	121,444
	Thereafter	169,990
	Total long-term obligations	$	510,769

Estimated_Fair_Values_Tables

Estimated Fair Values (Tables)	12 Months Ended
	Dec. 31, 2013
Fair Value Disclosures [Abstract]	'
Estimated Fair Values For Certain Financial Assets And Financial Liabilities	'
	For all other financial assets and financial liabilities, the carrying value is a reasonable estimate of the fair value as of December 31, 2013, and December 31, 2012. The carrying value and fair value for these assets and liabilities are equivalent because they are relatively short term in nature and there is no interest rate or credit risk relating to them that would cause the fair value to differ from the carrying value.
		December 31, 2013				December 31, 2012
		Carrying value		Fair value		Carrying value		Fair value
		(dollars in thousands)
	Cash and due from banks	$	533,599	$	533,599	$	639,730	$	639,730
	Overnight investments	859,324		859,324		443,180		443,180
	Investment securities available for sale	5,387,703		5,387,703		5,226,228		5,226,228
	Investment securities held to maturity	907		974		1,342		1,448
	Loans held for sale	47,271		47,956		86,333		87,654
	Acquired loans, net of allowance for loan and lease losses	975,906		956,388		1,669,263		1,635,878
	Originated loans, net of allowance for loan and lease losses	11,924,424		11,589,149		11,397,069		11,238,597
	Receivable from the FDIC for loss share agreements (1)	93,397		38,438		270,192		100,161
	Income earned not collected	48,390		48,390		47,666		47,666
	Stock issued by:
	Federal Home Loan Bank of Atlanta	30,813		30,813		36,139		36,139
	Federal Home Loan Bank of San Francisco	5,756		5,756		10,107		10,107
	Federal Home Loan Bank of Seattle	4,250		4,250		4,410		4,410
	Preferred stock	33,564		34,786		40,768		40,793
	Deposits	17,874,066		17,898,570		18,086,025		18,126,893
	Short-term borrowings	511,418		511,418		568,505		568,505
	Long-term obligations	510,769		526,037		444,921		472,642
	Payable to the FDIC for loss share agreements	109,378		111,941		101,641		111,679
	Accrued interest payable	6,737		6,737		9,353		9,353
	Interest rate swap	7,220		7,220		10,398		10,398
	(1) The fair value of the FDIC receivable excludes receivable related to accretable yield to be amortized in prospective periods.
Assets And Liabilities Carried At Fair Value On A Recurring Basis	'
	For assets and liabilities carried at fair value on a recurring basis, the following table provides fair value information as of December 31, 2013, and December 31, 2012.
				Fair value measurements using:
		Fair value		Level 1		Level 2		Level 3
		(dollars in thousands)
	December 31, 2013
	Assets measured at fair value
	Investment securities available for sale
	U.S. Treasury	$	373,437	$	—	$	373,437	$	—
	Government agency	2,544,229		—		2,544,229		—
	Mortgage-backed securities	2,446,873		—		2,446,873		—
	Equity securities	22,147		—		22,147		—
	State, county, municipal	187		—		187		—
	Other	830		—		830		—
	Total	$	5,387,703	$	—	$	5,387,703	$	—
	Liabilities measured at fair value
	Interest rate swaps accounted for as cash flow hedges	$	7,220	$	—	$	7,220	$	—
	December 31, 2012
	Assets measured at fair value
	Investment securities available for sale
	U.S. Treasury	$	823,632	$	—	$	823,632	$	—
	Government agency	3,055,204		—		3,055,204		—
	Mortgage-backed securities	1,329,657		—		1,329,657		—
	Equity securities	16,365		—		16,365		—
	State, county, municipal	550		—		550		—
	Other	820		—		820		—
	Total	$	5,226,228	$	—	$	5,226,228	$	—
	Liabilities measured at fair value
	Interest rate swaps accounted for as cash flow hedges	$	10,398	$	—	$	10,398	$	—
Assets And Liabilities Carried At Fair Value On A Nonrecurring Basis	'
	For financial assets and liabilities carried at fair value on a nonrecurring basis, the following table provides fair value information as of December 31, 2013, and December 31, 2012.
				Fair value measurements using:
		Fair value		Level 1		Level 2		Level 3
		(dollars in thousands)
	December 31, 2013
	Loans held for sale	$	29,389	$	—	$	29,389	$	—
	Originated impaired loans	73,517		—		—		73,517
	Other real estate not covered under loss share agreements remeasured during current year	20,526		—		—		20,526
	Other real estate covered under loss share agreements remeasured during current year	37,587		—		—		37,587
	December 31, 2012
	Loans held for sale	65,244		—		65,244		—
	Originated impaired loans	51,644		—		—		51,644
	Other real estate not covered under loss share agreements remeasured during current year	21,113		—		—		21,113
	Other real estate covered under loss share agreements remeasured during current year	59,545		—		—		61,026
Schedule of Fair Value Measurements Of Other Real Estate Opportunities	'
	OREO is measured and reported at fair value using level 3 inputs for valuations based on unobservable criteria. The values of OREO are determined by collateral valuations. Collateral values are determined using appraisals or other third-party value estimates of the subject property with discounts generally between 10 and 14 percent applied for estimated holding and selling costs and other external factors that may impact the marketability of the property. Changes to the value of the assets between scheduled valuation dates are monitored through continued communication with brokers and monthly reviews by the asset manager assigned to each asset. The asset manager uses the information gathered from brokers and other market sources to identify any significant changes in the market or the subject property as they occur. Valuations are then adjusted or new appraisals are ordered to ensure the reported values reflect the most current information.
	No financial liabilities were carried at fair value on a nonrecurring basis as of December 31, 2013, and December 31, 2012.

Employee_Benefit_Plans_Tables

Employee Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2013
Defined Benefit Plan Disclosure [Line Items]	'
Schedule of Net Funded Status	'
	The following table provides the changes in benefit obligation and plan assets and the funded status of the plan at December 31, 2013, and 2012.
		2013				2012
		(dollars in thousands)
	Change in benefit obligation
	Benefit obligation at January 1	$	580,938			$	493,648
	Service cost	16,332				14,241
	Interest cost	23,686				23,711
	Actuarial (gain) loss	(74,060		)		64,540
	Benefits paid	(16,218		)		(15,202		)
	Benefit obligation at December 31	530,678				580,938
	Change in plan assets
	Fair value of plan assets at January 1	463,005				429,505
	Actual return on plan assets	77,230				48,702
	Employer contributions	—				—
	Benefits paid	(16,218		)		(15,202		)
	Fair value of plan assets at December 31	524,017				463,005
	Funded status at December 31	$	(6,661	)		$	(117,933	)
Schedule of Amounts Recognized in the Balance Sheets	'
	The amounts recognized in the consolidated balance sheets as of December 31, 2013, and 2012, consist of:
		2013				2012
		(dollars in thousands)
	Other assets	$	—			$	—
	Other liabilities	(6,661		)		(117,933		)
	Net asset (liability) recognized	$	(6,661	)		$	(117,933	)
Schedule of Amount Included in Accumulated Other Comprehensive Income (Loss)	'
	The following table details the amounts recognized in accumulated other comprehensive income at December 31, 2013, and 2012:
		2013				2012
		(dollars in thousands)
	Net loss (gain)	$	16,605			$	157,147
	Less prior service cost	977				1,187
	Accumulated other comprehensive loss, excluding income taxes	$	17,582			$	158,334
	Accumulated other comprehensive income (loss) included the following as of December 31, 2013, and December 31, 2012:
		December 31, 2013											December 31, 2012
		Accumulated				Deferred				Accumulated			Accumulated			Deferred				Accumulated
		other				tax				other			other			tax				other
		comprehensive				benefit				comprehensive			comprehensive			expense				comprehensive
		loss								loss,			income (loss)			(benefit)				income (loss),
										net of tax										net of tax
		(dollars in thousands)
	Unrealized (losses) gains on investment securities available for sale	$	(16,632	)		$	(6,541	)		$	(10,091	)	$	33,809		$	13,292			$	20,517
	Unrealized loss on cash flow hedge	(7,220		)		(2,786		)		(4,434		)	(10,398		)	(4,106		)		(6,292		)
	Funded status of defined benefit plan	(17,582		)		(6,839		)		(10,743		)	(158,334		)	(62,003		)		(96,331		)
	Total	$	(41,434	)		$	(16,166	)		$	(25,268	)	$	(134,923	)	$	(52,817	)		$	(82,106	)
	The following table highlights changes in accumulated other comprehensive income (loss) by component for the years ended December 31, 2013, and 2012:
		Unrealized gains and losses on available-for-sale securities1				Gains and losses on cash flow hedges1				Defined benefit pension items1			Total
		(dollars in thousands)
	Balance at January 1, 2012	$	16,115			$	(6,483	)		$	(76,206	)	$	(66,574	)
	Other comprehensive income (loss) before reclassifications	5,807				(1,682		)		(26,961		)	(22,836		)
	Amounts reclassified from accumulated other comprehensive income (loss)	(1,405		)		1,873				6,836			7,304
	Net current period other comprehensive income (loss)	4,402				191				(20,125		)	(15,532		)
	Balance at December 31, 2012	20,517				(6,292		)		(96,331		)	(82,106		)
	Other comprehensive income (loss) before reclassifications	(30,608		)		(60		)		75,082			44,414
	Amounts reclassified from accumulated other comprehensive loss	—				1,918				10,506			12,424
	Net current period other comprehensive income (loss)	(30,608		)		1,858				85,588			56,838
	Balance at December 31, 2013	$	(10,091	)		$	(4,434	)		$	(10,743	)	$	(25,268	)
	1 All amounts are net of tax. Amounts in parentheses indicate debits.
Schedule of Amounts in Accumulated Other Comprehensive Income (Loss) to be Recognized over Next Fiscal Year	'
	The following table provides expected amortization amounts for 2014.
		(dollars in thousands)
	Actuarial loss	$	6,184
	Prior service cost	210
	Total	$	6,394
Schedule of Net Benefit Costs	'
	The following table shows the components of periodic benefit cost related to the pension plan and changes in plan assets and benefit obligations recognized in other comprehensive income for the years ended December 31, 2013, 2012, and 2011.
		Year ended December 31
		2013				2012				2011
		(dollars in thousands)
	Service cost	$	16,332			$	14,241			$	13,265
	Interest cost	23,686				23,711				23,810
	Expected return on assets	(27,733		)		(28,478		)		(29,184		)
	Amortization of prior service cost	210				210				210
	Amortization of net actuarial loss	16,985				11,026				6,861
	Total net periodic benefit cost	29,480				20,710				14,962
	Current year actuarial (loss) gain	(123,557		)		44,315				58,630
	Amortization of actuarial loss	(16,985		)		(11,026		)		(6,861		)
	Amortization of prior service cost	(210		)		(210		)		(210		)
	Total recognized in other comprehensive income	(140,752		)		33,079				51,559
	Total recognized in net periodic benefit cost and other comprehensive income	$	(111,272	)		$	53,789			$	66,521
Schedule of Assumptions Used	'
	The assumptions used to determine the benefit obligations as of December 31, 2013, and 2012, are as follows:
		2013			2012
		(dollars in thousands)
	Discount rate	4.9	%		4	%
	Rate of compensation increase	4			4
	The assumptions used to determine the net periodic benefit cost for the years ended December 31, 2013, 2012, and 2011, are as follows:
		2013			2012			2011
		(dollars in thousands)
	Discount rate	4	%		4.75	%		5.5	%
	Rate of compensation increase	4			4			4.5
	Expected long-term return on plan assets	7.25			7.5			7.75
Schedule of Fair Value and Allocation of Plan Assets	'
	The fair values of pension plan assets at December 31, 2013, and 2012, by asset class are as follows:
	Asset Class	Market Value				Quoted prices in				Significant			Significant			Target Allocation		Actual %
						Active Markets				Observable			Nonobservable					of Plan
						for Identical				Inputs			Inputs					Assets
						Assets (Level 1)				(Level 2)			(Level 3)
		(dollars in thousands)
	December 31, 2013
	Cash and equivalents	$	2,517			$	2,517			$	—		$	—		0 - 1%		1	%
	Equity securities															55 - 65%		62	%
	Large cap	218,023				218,023				—			—
	Mid cap	10,724				10,724				—			—
	Small cap	43,928				43,928				—			—
	International equity (developed)	10,535				10,535				—			—
	International equity (emerging)	40,643				40,643				—			—
	Fixed income									—			—			25-40%		28	%
	Investment grade bonds	74,501				—				74,501			—
	Intermediate bonds	48,746				—				48,746			—
	High-yield corporate bonds	10,111				—				10,111			—
	TIPS	4,395				4,395				—			—
	International emerging bond	10,119				—				10,119			—
	Alternative investments															0-10%		10	%
	Commodities	19,014				19,014				—			—
	Hedge fund composite	30,761				30,761							—
	Total pension assets	$	524,017			$	380,540			$	143,477		$	—				100	%
	December 31, 2012
	Cash and equivalents	$	3,088			$	3,088			—			—			0 - 1%		1	%
	Equity securities															55 - 65%		56	%
	Large cap	172,512				172,512				—			—
	Mid cap	21,451				21,451				—			—
	Small cap	31,053				31,053				—			—
	International equity (developed)	9,537				9,537				—			—
	International equity (emerging)	24,276				24,276				—			—
	Fixed income															36-44%		36	%
	Investment grade bonds	71,986				—				71,986			—
	Intermediate bonds	59,052				—				59,052			—
	High-yield corporate bonds	18,487				—				18,487			—
	TIPS	7,613				7,613				—			—
	International emerging bond	9,348				—				9,348			—
	Alternative investments					—				—			—			0-8%		8	%
	Commodities	17,376				17,376				—			—
	Hedge fund composite	17,226				17,226							—
	Total pension assets	$	463,005			$	304,132			$	158,873		$	—				100	%
Schedule of Expected Benefit Payments	'
	BancShares anticipates making no contributions to the pension plan during 2014. Following are estimated payments to pension plan participants in the indicated periods:
	Year	Projected benefit payments
	(dollars in thousands)
	2014	$	18,070
	2015	19,662
	2016	21,484
	2017	23,244
	2018	24,937
	2019-2023	150,638
Deferred Benefit Plans Liability Rollforward	'
	The following table provides the accrued liability as of December 31, 2013, and 2012, and the changes in the accrued liability during the years then ended:
		2013				2012
		(dollars in thousands)
	Present value of accrued liability as of January 1	$	25,851			$	25,586
	Benefit expense	959				462
	Benefits paid	(3,042		)		(3,241		)
	Benefits forfeited	—				554
	Interest cost	192				2,490
	Present value of accrued liability as of December 31	$	23,960			$	25,851
	Discount rate at December 31	4.9		%		4		%

Other_Noninterest_Income_and_O1

Other Noninterest Income and Other Noninterest Expense (Tables)	12 Months Ended
	Dec. 31, 2013
Noninterest Expense [Abstract]	'
Schedule of Other Operating Cost and Expense, by Component	'
	Other noninterest expense for the years ended December 31, 2013, 2012, and 2011, included the following:
		2013		2012		2011
		(dollars in thousands)
	Cardholder processing	$	9,892	$	11,816	$	11,418
	Merchant processing	35,279		33,313		37,196
	Collection	21,209		25,591		23,237
	Processing fees paid to third parties	15,095		14,454		16,336
	Cardholder reward programs	10,154		4,325		11,780
	Telecommunications	10,033		11,131		12,131
	Consultant	9,740		3,915		3,021
	Advertising	8,286		3,897		7,957
	Other	73,700		71,369		81,860
	Total other noninterest expense	$	193,388	$	179,811	$	204,936

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Schedule of Components of Income Tax Expense (Benefit)	'
	At December 31, income tax expense consisted of the following:
		2013			2012			2011
		(dollars in thousands)
	Current tax expense
	Federal	$	41,996		$	85,875		$	108,639
	State	7,080			9,212			23,101
	Total current tax expense	49,076			95,087			131,740
	Deferred tax expense (benefit)
	Federal	38,974			(27,344		)	(12,127		)
	State	8,915			(7,921		)	(4,510		)
	Total deferred tax expense (benefit)	47,889			(35,265		)	(16,637		)
	Total income tax expense	$	96,965		$	59,822		$	115,103
Schedule of Effective Income Tax Rate Reconciliation	'
	Income tax expense differed from the amounts computed by applying the federal income tax rate of 35 percent to pretax income as a result of the following:
		2013			2012			2011
		(dollars in thousands)
	Income taxes at statutory rates	$	92,633		$	67,959		$	108,546
	Increase (reduction) in income taxes resulting from:
	Nontaxable income on loans, leases and investments, net of nondeductible expenses	(1,185		)	(1,309		)	(1,481		)
	State and local income taxes, including change in valuation allowance, net of federal income tax benefit	10,397			839			12,084
	Tax credits	(5,569		)	(7,279		)	(5,166		)
	Other, net	689			(388		)	1,120
	Total income tax expense	$	96,965		$	59,822		$	115,103
Schedule of Deferred Tax Assets and Liabilities	'
	The net deferred tax asset included the following components at December 31:
		2013			2012
		(dollars in thousands)
	Allowance for loan and lease losses	$	90,790		$	124,928
	Pension liability	2,593			46,178
	Executive separation from service agreements	9,940			10,123
	State operating loss carryforward	79			652
	Unrealized loss on cash flow hedge	2,786			4,106
	Net unrealized loss on securities included in accumulated other comprehensive loss	6,541			—
	Other	17,884			19,465
	Deferred tax asset	130,613			205,452
	Accelerated depreciation	6,226			12,465
	Lease financing activities	10,216			10,366
	Net unrealized gains on securities included in accumulated other comprehensive loss	—			13,292
	Net deferred loan fees and costs	4,115			3,714
	Intangible asset	11,929			11,897
	Gain on FDIC-assisted transactions, deferred for tax purposes	57,895			29,694
	Other	6,352			5,373
	Deferred tax liability	96,733			86,801
	Net deferred tax asset	$	33,880		$	118,651

Transactions_with_Related_Pers1

Transactions with Related Persons (Tables)	12 Months Ended
	Dec. 31, 2013
Related Party Transactions [Abstract]	'
Schedule of Related Party Transactions	'
	For those identified as Related Persons as of December 31, 2013, the following table provides an analysis of changes in the loans outstanding during 2013:
		(dollars in thousands)
	Balance at January 1, 2013	$	1,311
	New loans	605
	Repayments	(91		)
	Balance at December 31, 2013	$	1,825

Derivatives_Tables

Derivatives (Tables)	12 Months Ended
	Dec. 31, 2013
Derivative [Line Items]	'
Schedule Of Accumulated Other Comprehensive Income (Loss)	'
	The following table details the amounts recognized in accumulated other comprehensive income at December 31, 2013, and 2012:
		2013			2012
		(dollars in thousands)
	Net loss (gain)	$	16,605		$	157,147
	Less prior service cost	977			1,187
	Accumulated other comprehensive loss, excluding income taxes	$	17,582		$	158,334
	Accumulated other comprehensive income (loss) included the following as of December 31, 2013, and December 31, 2012:
		December 31, 2013									December 31, 2012
		Accumulated			Deferred			Accumulated			Accumulated			Deferred			Accumulated
		other			tax			other			other			tax			other
		comprehensive			benefit			comprehensive			comprehensive			expense			comprehensive
		loss						loss,			income (loss)			(benefit)			income (loss),
								net of tax									net of tax
		(dollars in thousands)
	Unrealized (losses) gains on investment securities available for sale	$	(16,632	)	$	(6,541	)	$	(10,091	)	$	33,809		$	13,292		$	20,517
	Unrealized loss on cash flow hedge	(7,220		)	(2,786		)	(4,434		)	(10,398		)	(4,106		)	(6,292		)
	Funded status of defined benefit plan	(17,582		)	(6,839		)	(10,743		)	(158,334		)	(62,003		)	(96,331		)
	Total	$	(41,434	)	$	(16,166	)	$	(25,268	)	$	(134,923	)	$	(52,817	)	$	(82,106	)
	The following table highlights changes in accumulated other comprehensive income (loss) by component for the years ended December 31, 2013, and 2012:
		Unrealized gains and losses on available-for-sale securities1			Gains and losses on cash flow hedges1			Defined benefit pension items1			Total
		(dollars in thousands)
	Balance at January 1, 2012	$	16,115		$	(6,483	)	$	(76,206	)	$	(66,574	)
	Other comprehensive income (loss) before reclassifications	5,807			(1,682		)	(26,961		)	(22,836		)
	Amounts reclassified from accumulated other comprehensive income (loss)	(1,405		)	1,873			6,836			7,304
	Net current period other comprehensive income (loss)	4,402			191			(20,125		)	(15,532		)
	Balance at December 31, 2012	20,517			(6,292		)	(96,331		)	(82,106		)
	Other comprehensive income (loss) before reclassifications	(30,608		)	(60		)	75,082			44,414
	Amounts reclassified from accumulated other comprehensive loss	—			1,918			10,506			12,424
	Net current period other comprehensive income (loss)	(30,608		)	1,858			85,588			56,838
	Balance at December 31, 2013	$	(10,091	)	$	(4,434	)	$	(10,743	)	$	(25,268	)
	1 All amounts are net of tax. Amounts in parentheses indicate debits.
Interest Rate Swap	'
Derivative [Line Items]	'
Schedule Of Interest Rate Swaps	'
	The following table provides the notional amount of the interest rate swap and the fair value of the liability as of December 31, 2013, and 2012.
		December 31, 2013						December 31, 2012
		Notional			Estimated fair value of liability			Notional			Estimated fair value of liability
		amount						amount
		(dollars in thousands)
	2011 interest rate swap hedging variable rate exposure on trust preferred securities 2011-2016	$	93,500		$	7,220		$	93,500		$	10,398

Goodwill_and_Intangible_Assets1

Goodwill and Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]	'
Schedule of Finite-Lived Intangible Assets by Major Class	'
	The following information relates to other intangible assets, all of which are being amortized over their estimated useful lives:
		2013			2012
		(dollars in thousands)
	Balance at January 1	$	3,556		$	7,032
	Amortization	(2,309		)	(3,476		)
	Balance at December 31	$	1,247		$	3,556
	Intangible assets generated by FDIC-assisted transactions, which represent the estimated fair value of core deposits and other customer relationships that were acquired, are being amortized over a four-year life on an accelerated basis. The gross amount of other intangible assets and accumulated amortization as of December 31, 2013, and 2012, are:
		2013			2012
		(dollars in thousands)
	Gross balance	$	18,966		$	18,966
	Accumulated amortization	(17,719		)	(15,410		)
	Carrying value	$	1,247		$	3,556
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense	'
	Based on current estimated useful lives and carrying values, BancShares anticipates amortization expense for intangible assets in subsequent periods will be:
	Year	Amortization expense
		(dollars in thousands)
	2014	$	1,122
	2015	125
		$	1,247

Shareholders_Equity_Dividends_1

Shareholders' Equity, Dividends Restrictions and Other Regulatory Matters (Tables)	12 Months Ended
	Dec. 31, 2013
Regulatory Capital Requirements [Abstract]	'
Schedule of Compliance with Regulatory Capital Requirements	'
	Following is an analysis of capital ratios for BancShares and FCB as of December 31, 2013, and 2012:
		December 31, 2013						December 31, 2012
		Amount		Ratio		Requirements to be well-capitalized		Amount		Ratio		Requirements to be well-capitalized
		(dollars in thousands)
	BancShares
	Tier 1 capital	$	2,109,139	14.92	%	6	%	$	1,949,985	14.27	%	6	%
	Total capital	2,320,792		16.42	%	10	%	2,179,370		15.95	%	10	%
	Leverage capital	2,109,139		9.82	%	5	%	1,949,985		9.23	%	5	%
	FCB
	Tier 1 capital	1,983,349		14.14	%	6	%	1,942,101		14.37	%	6	%
	Total capital	2,184,461		15.57	%	10	%	2,163,034		16	%	10	%
	Leverage capital	1,983,349		9.36	%	5	%	1,942,101		9.34	%	5	%

Accumulated_Other_Comprehensiv1

Accumulated Other Comprehensive Loss (Tables)	12 Months Ended
	Dec. 31, 2013
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]	'
Schedule Of Accumulated Other Comprehensive Income (Loss)	'
	The following table details the amounts recognized in accumulated other comprehensive income at December 31, 2013, and 2012:
		2013				2012
		(dollars in thousands)
	Net loss (gain)	$	16,605			$	157,147
	Less prior service cost	977				1,187
	Accumulated other comprehensive loss, excluding income taxes	$	17,582			$	158,334
	Accumulated other comprehensive income (loss) included the following as of December 31, 2013, and December 31, 2012:
		December 31, 2013										December 31, 2012
		Accumulated				Deferred			Accumulated			Accumulated			Deferred			Accumulated
		other				tax			other			other			tax			other
		comprehensive				benefit			comprehensive			comprehensive			expense			comprehensive
		loss							loss,			income (loss)			(benefit)			income (loss),
									net of tax									net of tax
		(dollars in thousands)
	Unrealized (losses) gains on investment securities available for sale	$	(16,632	)		$	(6,541	)	$	(10,091	)	$	33,809		$	13,292		$	20,517
	Unrealized loss on cash flow hedge	(7,220		)		(2,786		)	(4,434		)	(10,398		)	(4,106		)	(6,292		)
	Funded status of defined benefit plan	(17,582		)		(6,839		)	(10,743		)	(158,334		)	(62,003		)	(96,331		)
	Total	$	(41,434	)		$	(16,166	)	$	(25,268	)	$	(134,923	)	$	(52,817	)	$	(82,106	)
	The following table highlights changes in accumulated other comprehensive income (loss) by component for the years ended December 31, 2013, and 2012:
		Unrealized gains and losses on available-for-sale securities1				Gains and losses on cash flow hedges1			Defined benefit pension items1			Total
		(dollars in thousands)
	Balance at January 1, 2012	$	16,115			$	(6,483	)	$	(76,206	)	$	(66,574	)
	Other comprehensive income (loss) before reclassifications	5,807				(1,682		)	(26,961		)	(22,836		)
	Amounts reclassified from accumulated other comprehensive income (loss)	(1,405		)		1,873			6,836			7,304
	Net current period other comprehensive income (loss)	4,402				191			(20,125		)	(15,532		)
	Balance at December 31, 2012	20,517				(6,292		)	(96,331		)	(82,106		)
	Other comprehensive income (loss) before reclassifications	(30,608		)		(60		)	75,082			44,414
	Amounts reclassified from accumulated other comprehensive loss	—				1,918			10,506			12,424
	Net current period other comprehensive income (loss)	(30,608		)		1,858			85,588			56,838
	Balance at December 31, 2013	$	(10,091	)		$	(4,434	)	$	(10,743	)	$	(25,268	)
	1 All amounts are net of tax. Amounts in parentheses indicate debits.
Reclassification out of Accumulated Other Comprehensive Income	'
	Details about accumulated other comprehensive loss		Amount reclassified from accumulated other comprehensive loss1				Affected line item in the statement where net income is presented
			(dollars in thousands)
	Year ended December 31, 2013
	Unrealized gains and losses on available for sale securities
			$	—			Securities gains (losses)
			—				Income taxes
			$	—			Net income
	Gains and losses on cash flow hedges
	Interest rate swap contracts		$	(3,281	)		Long-term obligations
			1,363				Income taxes
			$	(1,918	)		Net income
	Amortization of defined benefit pension items
	Prior service costs		$	(210	)		Employee benefits
	Actuarial losses		(16,985		)		Employee benefits
			(17,195		)		Income before income taxes
			6,689				Income taxes
			$	(10,506	)		Net income
	Total reclassifications for the period		$	(12,424	)
	Year ended December 31, 2012
	Unrealized gains and losses on available for sale securities
			$	2,322			Securities gains (losses)
			(917		)		Income taxes
			$	1,405			Net income
	Gains and losses on cash flow hedges
	Interest rate swap contracts		$	(3,095	)		Long-term obligations
			1,222				Income taxes
			$	(1,873	)		Net income
	Amortization of defined benefit pension items
	Prior service costs		$	(210	)		Employee benefits
	Actuarial losses		(11,026		)		Employee benefits
			(11,236		)		Income before income taxes
			4,400				Income taxes
			$	(6,836	)		Net income
	Total reclassifications for the period		$	(7,304	)
	1 Amounts in parentheses indicate debits to profit/loss.

Subsequent_Events_Tables

Subsequent Events (Tables)	12 Months Ended
	Dec. 31, 2013
Subsequent Events [Abstract]	'
Schedule of assets acquired and liabilities assumed	'
	The following table provides the carrying value of acquired assets and assumed liabilities, as recorded by 1st Financial, the fair value adjustments calculated at the time of the acquisition, and the resulting fair value recorded by FCB.
		January 1, 2014
		As recorded by			Fair value adjustments			As recorded by FCB
		1st Financial
		(dollars in thousands)
	Assets
	Cash and cash equivalents	$	28,194		$	—		$	28,194
	Investment securities available for sale	246,890			(9,452		)	237,438
	Loans held for sale	1,183			—			1,183
	Restricted equity securities	3,105			671			3,776
	Loans	338,170			(21,843		)	316,327
	Less: allowance for loan losses	(7,796		)	7,796			—
	Premises and equipment	3,871			(1,185		)	2,686
	Other real estate owned	12,896			(1,305		)	11,591
	Intangible asset	—			3,780			3,780
	Other assets	16,811			(465		)	16,346
	Total assets acquired	$	643,324		$	(22,003	)	$	621,321
	Liabilities
	Deposits:
	Noninterest-bearing	$	152,444		$	—		$	152,444
	Interest-bearing	477,881			1,546			479,427
	Total deposits	630,325			1,546			631,871
	Federal Funds purchased	406			—			406
	Other liabilities	3,392			167			3,559
	Total liabilities assumed	634,123			1,713			635,836
	Net assets acquired	$	9,201		$	(23,716	)	(14,515		)
	Cash paid to shareholders							(2,000		)
	Cash paid to acquire TARP securities							(8,000		)
	Goodwill recorded for 1st Financial							$	(24,515	)
Loans acquired, cash flows expected	'
	The following table documents changes to the amount of accretable yield for 2013 and 2012. Removals represent a reduction to the accretable yield as a result of loans that were fully charged off or paid off during the period.
		2013			2012
		(dollars in thousands)
	Balance at January 1	$	539,564		$	276,690
	Accretion	(224,672		)	(304,023		)
	Reclassifications from nonaccretable difference	92,349			353,708
	Changes in expected cash flows that do not affect nonaccretable difference	32,749			213,189
	Balance at December 31	$	439,990		$	539,564
	For loans acquired from 1st Financial, the contractually required payments including principal and interest, cash flows expected to be collected and fair values as of the acquisition date were:
		1-Jan-14
		(dollars in thousands)
	Contractually required payments	$	413,937
	Cash flows expected to be collected	400,326
	Fair value at acquisition date	316,327
Fair value of loans acquired	'
	The recorded fair values of loans acquired in the 1st Financial transaction as of the acquisition date were as follows:
		1-Jan-14
		(dollars in thousands)
	Commercial:
	Construction and land development	$	41,516
	Commercial mortgage	123,925
	Other commercial real estate	6,698
	Commercial and industrial	29,126
	Total commercial loans	201,265
	Noncommercial:
	Residential mortgage	113,177
	Consumer	1,885
	Total noncommercial loans	115,062
	Total loans acquired from 1st Financial	$	316,327

Parent_Company_Financial_State1

Parent Company Financial Statements (Tables)	12 Months Ended
	Dec. 31, 2013
Condensed Financial Information of Parent Company Only Disclosure [Abstract]	'
Condensed Balance Sheets	'
	Parent Company
	Condensed Balance Sheets
		December 31, 2013			December 31, 2012
		(dollars in thousands)
	Assets
	Cash	$	13,047		$	2,131
	Investment securities available for sale	234,488			237,765
	Investment in subsidiaries	2,058,505			1,969,600
	Due from subsidiaries	145,666			78,512
	Other assets	144,998			83,283
	Total assets	$	2,596,704		$	2,371,291
	Liabilities and Shareholders' Equity
	Short-term borrowings	$	411,907		$	399,047
	Long-term obligations	96,392			96,392
	Other liabilities	11,730			11,845
	Shareholders' equity	2,076,675			1,864,007
	Total liabilities and shareholders' equity	$	2,596,704		$	2,371,291
Condensed Income Statements	'
	Parent Company
	Condensed Income Statements
		Year ended December 31
		2013			2012			2011
		(dollars in thousands)
	Interest income	$	1,387		$	1,353		$	1,345
	Interest expense	7,065			15,435			21,512
	Net interest loss	(5,678		)	(14,082		)	(20,167		)
	Dividends from subsidiaries	131,006			179,588			82,812
	Other income	3,620			2,843			9,699
	Other operating expense	2,344			6,384			5,298
	Income before income tax benefit and equity in undistributed net income of subsidiaries	126,604			161,965			67,046
	Income tax benefit	(2,095		)	(8,417		)	(5,531		)
	Income before equity in undistributed net income of subsidiaries	128,699			170,382			72,577
	(Excess distributions) equity in undistributed net income of subsidiaries	39,000			(36,034		)	122,451
	Net income	$	167,699		$	134,348		$	195,028
Condensed Statements of Cash Flows	'
	Parent Company
	Condensed Statements of Cash Flows
		Year ended December 31
		2013			2012			2011
		(dollars in thousands)
	OPERATING ACTIVITIES
	Net income	$	167,699		$	134,348		$	195,028
	Adjustments
	Excess distributions (undistributed) net income of subsidiaries	(39,000		)	36,034			(122,451		)
	Net amortization of premiums and discounts	334			439			203
	Gain on retirement of long term obligations	—			—			(9,685		)
	Securities gains	—			(2,274		)	(62		)
	Gain on sale of other assets	(1,331		)	—			—
	Other than temporary impairment on securities	—			45			26
	Change in other assets	(61,704		)	30,761			(20,951		)
	Change in other liabilities	(2,096		)	(10,148		)	(1,925		)
	Net cash provided by operating activities	63,902			189,205			40,183
	INVESTING ACTIVITIES
	Net change in due from subsidiaries	(67,154		)	42,323			146,463
	Purchases of investment securities	(126,197		)	(111,409		)	(220,387		)
	Proceeds from sales, calls, and maturities of securities	135,000			112,625			75,151
	Investment in subsidiaries	1,489			9,298			—
	Net cash (used) provided by investing activities	(56,862		)	52,837			1,227
	FINANCING ACTIVITIES
	Net change in short-term borrowings	12,860			23,651			4,046
	Retirement of long-term obligations	—			(155,305		)	(11,815		)
	Repurchase of common stock	(321		)	(103,624		)	(24,387		)
	Cash dividends paid	(8,663		)	(15,398		)	(12,499		)
	Net cash provided (used) by financing activities	3,876			(250,676		)	(44,655		)
	Net change in cash	10,916			(8,634		)	(3,245		)
	Cash balance at beginning of year	2,131			10,765			14,010
	Cash balance at end of year	$	13,047		$	2,131		$	10,765
	Cash payments for
	Interest	$	6,904		$	25,574		$	20,677
	Income taxes	102,890			66,453			91,465

Accounting_Policies_and_Basis_2

Accounting Policies and Basis of Presentation Summary of Significant Accounting Policies (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
	Branches
Property, Plant and Equipment [Line Items]	'	'
Maximum Period Of Fair Value Refinement After Transaction Closing Date	'1 year	'
Securities Sold under Agreements to Repurchase	$97,000,000	$111,900,000
Number of Stores	397	'
Impaired Loans and Leases, Baseline for Meaurement	$500,000	'
Class A Common Stock	'	'
Property, Plant and Equipment [Line Items]	'	'
Votes per share of common stock	1	'
Class B Common Stock	'	'
Property, Plant and Equipment [Line Items]	'	'
Votes per share of common stock	16	'
Building [Member] | Minimum	'	'
Property, Plant and Equipment [Line Items]	'	'
Property, Plant and Equipment, Useful Life	'25 years	'
Building [Member] | Maximum	'	'
Property, Plant and Equipment [Line Items]	'	'
Property, Plant and Equipment, Useful Life	'40 years	'
Furniture and Fixtures [Member] | Minimum	'	'
Property, Plant and Equipment [Line Items]	'	'
Property, Plant and Equipment, Useful Life	'3 years	'
Furniture and Fixtures [Member] | Maximum	'	'
Property, Plant and Equipment [Line Items]	'	'
Property, Plant and Equipment, Useful Life	'10 years	'

Investments_Aggregate_Values_a

Investments (Aggregate Values and Unrealized Gains and Losses) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Schedule of Investments [Line Items]	'	'
Investment securities, aggregate fair value, continuous unrealized losses of more than 12 months	$56,800,000	'
Investment securities available for sale	'	'
Cost	5,404,335,000	5,192,419,000
Gross Unrealized Gains	28,188,000	34,517,000
Available For Sale Securities Gross Unrealized Loss Accumulated In Investments	44,820,000	708,000
Fair Value	5,387,703,000	5,226,228,000
Investment securities held to maturity	'	'
Cost	907,000	1,342,000
Investment securities, aggregate unrealized loss, continuous unrealized losses of more than 12 months	1,100,000	'
U. S. Treasury	'	'
Investment securities available for sale	'	'
Cost	373,223,000	823,241,000
Gross Unrealized Gains	259,000	403,000
Available For Sale Securities Gross Unrealized Loss Accumulated In Investments	45,000	12,000
Fair Value	373,437,000	823,632,000
Government Agency	'	'
Investment securities available for sale	'	'
Cost	2,543,223,000	3,052,040,000
Gross Unrealized Gains	1,798,000	3,501,000
Available For Sale Securities Gross Unrealized Loss Accumulated In Investments	792,000	337,000
Fair Value	2,544,229,000	3,055,204,000
Mortgage Backed Securities, Other [Member]	'	'
Investment securities available for sale	'	'
Cost	2,486,297,000	1,315,211,000
Gross Unrealized Gains	4,526,000	14,787,000
Available For Sale Securities Gross Unrealized Loss Accumulated In Investments	43,950,000	341,000
Fair Value	2,446,873,000	1,329,657,000
Investment securities held to maturity	'	'
Cost	907,000	1,342,000
Held To Maturity Securities Accumulated Unrecognized Holding Gain	67,000	133,000
Held To Maturity Securities Accumulated Unrecognized Holding Loss	0	27,000
Fair Value	974,000	1,448,000
Equity Securities	'	'
Investment securities available for sale	'	'
Cost	543,000	543,000
Gross Unrealized Gains	21,604,000	15,822,000
Available For Sale Securities Gross Unrealized Loss Accumulated In Investments	0	0
Fair Value	22,147,000	16,365,000
State, County and Municipal	'	'
Investment securities available for sale	'	'
Cost	186,000	546,000
Gross Unrealized Gains	1,000	4,000
Available For Sale Securities Gross Unrealized Loss Accumulated In Investments	0	0
Fair Value	187,000	550,000
Other Debt Obligations	'	'
Investment securities available for sale	'	'
Cost	863,000	838,000
Gross Unrealized Gains	0	0
Available For Sale Securities Gross Unrealized Loss Accumulated In Investments	33,000	18,000
Fair Value	$830,000	$820,000

Investments_Maturity_Informati

Investments (Maturity Information) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Investment securities available for sale	'	'
Total investment securities available for sale, cost	$5,404,335	$5,192,419
Investment securities available for sale	5,387,703	5,226,228
Investment securities held to maturity	'	'
Investment securities held to maturity	907	1,342
Debt Securities	'	'
Investment securities available for sale	'	'
Maturing in one year or less, cost	839,956	2,285,159
Maturing in one through five years, cost	2,077,539	1,590,608
Maturing in five through ten years, cost	0	898
Maturing in one year or less, fair value	840,883	2,286,403
Maturing in one through five years, fair value	2,077,800	1,592,923
Maturing in five through ten years, fair value	0	880
Equity Securities	'	'
Investment securities available for sale	'	'
Total investment securities available for sale, cost	543	543
Investment securities available for sale	22,147	16,365
Mortgage Backed Securities, Other [Member]	'	'
Investment securities available for sale	'	'
Total investment securities available for sale, cost	2,486,297	1,315,211
Investment securities available for sale	2,446,873	1,329,657
Investment securities held to maturity	'	'
Investment securities held to maturity	907	1,342
Fair Value	$974	$1,448

Investments_Securities_Gains_L

Investments (Securities Gains (Losses)) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Investments [Abstract]	'	'	'
Gross gains on sales of investment securities available for sale	$0	$2,324	$531
Gross losses on sales of investment securities available for sale	0	-2	-793
Other than temporary impairment loss on equity securities	0	-45	-26
Total securities gains (losses)	$0	$2,277	($288)

Investments_Unrealized_Losses_

Investments (Unrealized Losses) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Investment securities available for sale:	'	'
Less than 12 months, fair value	$3,104,700	$664,243
Available for Sale Securities Continuous Unrealized Loss Position Less Than 12 Months Aggregate Losses Accumulated In Investments	43,715	581
Available For Sale Securities Gross Unrealized Loss Accumulated In Investments	44,820	708
12 months or more, fair value	56,830	9,433
Available For Sale Securities Continuous Unrealized Loss Position 12 Months Or Longer Aggregate Losses Acumulated In Investments	1,105	127
Total fair value	3,161,530	673,676
U. S. Treasury	'	'
Investment securities available for sale:	'	'
Less than 12 months, fair value	102,105	120,045
Available for Sale Securities Continuous Unrealized Loss Position Less Than 12 Months Aggregate Losses Accumulated In Investments	45	12
Available For Sale Securities Gross Unrealized Loss Accumulated In Investments	45	12
12 months or more, fair value	0	0
Available For Sale Securities Continuous Unrealized Loss Position 12 Months Or Longer Aggregate Losses Acumulated In Investments	0	0
Total fair value	102,105	120,045
Government Agency	'	'
Investment securities available for sale:	'	'
Less than 12 months, fair value	780,552	407,498
Available for Sale Securities Continuous Unrealized Loss Position Less Than 12 Months Aggregate Losses Accumulated In Investments	761	337
Available For Sale Securities Gross Unrealized Loss Accumulated In Investments	792	337
12 months or more, fair value	29,969	0
Available For Sale Securities Continuous Unrealized Loss Position 12 Months Or Longer Aggregate Losses Acumulated In Investments	31	0
Total fair value	810,521	407,498
Mortgage Backed Securities, Other [Member]	'	'
Investment securities available for sale:	'	'
Less than 12 months, fair value	2,221,213	135,880
Available for Sale Securities Continuous Unrealized Loss Position Less Than 12 Months Aggregate Losses Accumulated In Investments	42,876	214
Available For Sale Securities Gross Unrealized Loss Accumulated In Investments	43,950	341
12 months or more, fair value	26,861	9,433
Available For Sale Securities Continuous Unrealized Loss Position 12 Months Or Longer Aggregate Losses Acumulated In Investments	1,074	127
Total fair value	2,248,074	145,313
Investment securities held to maturity:	'	'
Less than 12 months, fair value	0	0
Held-to-maturity Securities Continuous Unrealized Loss Position Less Than 12 Months Accumulated Loss	0	0
12 months or more, fair value	0	17
Held-to-maturity Securities Continuous Unrealized Loss Position 12 Months Or Longer Accumulated Loss	0	27
Total fair value	0	17
Held To Maturity Securities Accumulated Unrecognized Holding Loss	0	27
Other Debt Obligations	'	'
Investment securities available for sale:	'	'
Less than 12 months, fair value	830	820
Available for Sale Securities Continuous Unrealized Loss Position Less Than 12 Months Aggregate Losses Accumulated In Investments	33	18
Available For Sale Securities Gross Unrealized Loss Accumulated In Investments	33	18
12 months or more, fair value	0	0
Available For Sale Securities Continuous Unrealized Loss Position 12 Months Or Longer Aggregate Losses Acumulated In Investments	0	0
Total fair value	830	820
State, County and Municipal	'	'
Investment securities available for sale:	'	'
Available For Sale Securities Gross Unrealized Loss Accumulated In Investments	$0	$0

Investments_Narrative_Details

Investments (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
	investments
Investments [Abstract]	'	'
Investment securities, aggregate fair value, continuous unrealized losses of more than 12 months	$56,800,000	'
Investment securities, aggregate unrealized loss, continuous unrealized losses of more than 12 months	1,100,000	'
Number of investments in continuous unrealized loss position for more than twelve months	18	'
Unrealized losses related to marketability of securities or issuers ability to honor redemption obligations	0	0
Investment value deemed to be OTTI	0	'
Investment securities, aggregate carrying value, pledged as collateral	$2,750,000,000	$2,350,000,000

Loans_and_Leases_Narrative_Det

Loans and Leases (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Financing Receivable, Recorded Investment [Line Items]	'	'
Noncovered loans pledged to secure debt obligations	$2,560,000,000	$2,570,000,000
Charge off of past due business credit card loans (days)	'120 days	'
Ungraded | Business Credit Card Loans	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans to finance buyout, outstanding balance	72,375,000	'
Ungraded | Tobacco Buyout Loans	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans to finance buyout, outstanding balance	$22,060,000	'

Loans_and_Leases_Loans_and_Lea

Loans and Leases (Loans and Leases Outstanding) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Acquired	$1,029,426	$1,809,235
Originated	12,104,298	11,576,115
Total loans and leases	13,133,724	13,385,350
Commercial	'	'
Acquired	781,307	1,450,035
Originated	8,499,348	7,994,495
Commercial | Construction and land development	'	'
Acquired	78,915	237,906
Originated	319,847	309,190
Commercial | Mortgage	'	'
Acquired	642,891	1,054,473
Originated	6,362,490	6,029,435
Commercial | Commercial and industrial	'	'
Acquired	17,254	49,463
Originated	1,081,158	1,038,530
Commercial | Lease financing	'	'
Originated	381,763	330,679
Commercial | Other commercial real estate	'	'
Acquired	41,381	107,119
Originated	178,754	160,980
Commercial | Other	'	'
Acquired	866	1,074
Originated	175,336	125,681
Noncommerical	'	'
Acquired	248,119	359,200
Originated	3,604,950	3,581,620
Noncommerical | Mortgage	'	'
Acquired	213,851	297,926
Originated	982,421	822,889
Noncommerical | Construction and land development	'	'
Acquired	2,583	20,793
Originated	122,792	131,992
Noncommerical | Revolving mortgage	'	'
Acquired	30,834	38,710
Originated	2,113,285	2,210,133
Noncommerical | Consumer	'	'
Acquired	851	1,771
Originated	$386,452	$416,606

Loans_and_Leases_Loans_Acquire

Loans and Leases (Loans Acquired By Loan Class) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	$1,029,426	$1,809,235
Commercial	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	781,307	1,450,035
Commercial | Construction and land development	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	78,915	237,906
Commercial | Mortgage	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	642,891	1,054,473
Commercial | Other commercial real estate	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	41,381	107,119
Commercial | Commercial and industrial	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	17,254	49,463
Commercial | Other	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	866	1,074
Noncommerical	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	248,119	359,200
Noncommerical | Mortgage	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	213,851	297,926
Noncommerical | Revolving mortgage	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	30,834	38,710
Noncommerical | Construction and land development	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	2,583	20,793
Noncommerical | Consumer	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	$851	$1,771

Loans_and_Leases_Composition_o

Loans and Leases (Composition of the Loans and Leases Outstanding By Credit Quality Indicator) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	$1,029,426	$1,809,235
Originated	12,104,298	11,576,115
Pass	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	492,831	650,661
Special Mention	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	155,750	331,614
Substandard	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	300,048	616,692
Doubtful	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	61,121	182,568
Ungraded	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	19,676	27,700
Commercial	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	781,307	1,450,035
Originated	8,499,348	7,994,495
Commercial | Construction and land development	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	78,915	237,906
Originated	319,847	309,190
Commercial | Mortgage	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	642,891	1,054,473
Originated	6,362,490	6,029,435
Commercial | Other commercial real estate	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	41,381	107,119
Originated	178,754	160,980
Commercial | Commercial and industrial	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	17,254	49,463
Originated	1,081,158	1,038,530
Commercial | Lease financing	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Originated	381,763	330,679
Commercial | Other	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	866	1,074
Originated	175,336	125,681
Commercial | Pass	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Originated	8,092,174	7,459,277
Commercial | Pass | Construction and land development	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	2,619	17,010
Originated	308,231	274,480
Commercial | Pass | Mortgage	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	296,824	376,974
Originated	6,094,505	5,688,541
Commercial | Pass | Other commercial real estate	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	22,225	33,570
Originated	174,913	151,549
Commercial | Pass | Commercial and industrial	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	8,021	19,451
Originated	964,840	894,998
Commercial | Pass | Lease financing	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Originated	375,371	325,626
Commercial | Pass | Other	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Originated	174,314	124,083
Commercial | Special Mention	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Originated	147,325	200,073
Commercial | Special Mention | Construction and land development	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	15,530	25,734
Originated	8,620	14,666
Commercial | Special Mention | Mortgage	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	125,295	259,264
Originated	119,515	166,882
Commercial | Special Mention | Other commercial real estate	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	3,431	17,518
Originated	1,362	2,812
Commercial | Special Mention | Commercial and industrial	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	2,585	12,465
Originated	14,686	13,275
Commercial | Special Mention | Lease financing	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Originated	2,160	1,601
Commercial | Special Mention | Other	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Originated	982	837
Commercial | Substandard	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Originated	156,956	196,257
Commercial | Substandard | Construction and land development	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	52,228	105,061
Originated	2,944	18,761
Commercial | Substandard | Mortgage	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	179,657	344,542
Originated	141,913	157,966
Commercial | Substandard | Other commercial real estate	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	7,012	44,335
Originated	2,216	5,038
Commercial | Substandard | Commercial and industrial	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	5,225	14,698
Originated	6,352	12,073
Commercial | Substandard | Lease financing	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Originated	3,491	1,663
Commercial | Substandard | Other	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Originated	40	756
Commercial | Doubtful	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Originated	6,022	16,336
Commercial | Doubtful | Construction and land development	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	7,436	87,445
Originated	52	952
Commercial | Doubtful | Mortgage	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	40,471	73,016
Originated	5,159	13,475
Commercial | Doubtful | Other commercial real estate	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	8,713	11,696
Originated	75	98
Commercial | Doubtful | Commercial and industrial	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	1,257	2,757
Originated	144	1,040
Commercial | Doubtful | Lease financing	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Originated	592	771
Commercial | Doubtful | Other	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Originated	0	0
Commercial | Ungraded	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Originated	96,871	122,552
Commercial | Ungraded | Construction and land development	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	1,102	2,656
Originated	0	331
Commercial | Ungraded | Mortgage	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	644	677
Originated	1,398	2,571
Commercial | Ungraded | Other commercial real estate	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	0	0
Originated	188	1,483
Commercial | Ungraded | Commercial and industrial	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	166	92
Originated	95,136	117,144
Commercial | Ungraded | Lease financing	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Originated	149	1,018
Commercial | Ungraded | Other	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Originated	0	5
Noncommerical	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	248,119	359,200
Originated	3,604,950	3,581,620
Noncommerical | Mortgage	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	213,851	297,926
Originated	982,421	822,889
Noncommerical | Revolving mortgage	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	30,834	38,710
Originated	2,113,285	2,210,133
Noncommerical | Construction and land development	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	2,583	20,793
Originated	122,792	131,992
Noncommerical | Consumer	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	851	1,771
Originated	386,452	416,606
Noncommerical | Consumer and Other	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	1,717	2,845
Noncommerical | Pass | Mortgage	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	135,326	172,165
Noncommerical | Pass | Revolving mortgage	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	26,322	29,540
Noncommerical | Pass | Construction and land development	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	149	334
Noncommerical | Pass | Consumer and Other	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	1,345	1,617
Noncommerical | Special Mention | Mortgage	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	6,301	14,863
Noncommerical | Special Mention | Revolving mortgage	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	2,608	1,736
Noncommerical | Special Mention | Construction and land development	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	0	0
Noncommerical | Special Mention | Consumer and Other	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	0	34
Noncommerical | Substandard | Mortgage	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	52,774	83,193
Noncommerical | Substandard | Revolving mortgage	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	1,013	7,434
Noncommerical | Substandard | Construction and land development	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	2,139	17,190
Noncommerical | Substandard | Consumer and Other	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	0	239
Noncommerical | Doubtful | Mortgage	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	2,058	4,268
Noncommerical | Doubtful | Revolving mortgage	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	891	0
Noncommerical | Doubtful | Construction and land development	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	295	3,269
Noncommerical | Doubtful | Consumer and Other	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	0	117
Noncommerical | Ungraded | Mortgage	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	17,392	23,437
Noncommerical | Ungraded | Revolving mortgage	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	0	0
Noncommerical | Ungraded | Construction and land development	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	0	0
Noncommerical | Ungraded | Consumer and Other	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	372	838
Originated Loans	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Current	12,015,067	11,441,555
Originated	12,104,298	11,576,115
30-59 Days Past Due	44,167	64,528
60-89 Days Past Due	14,236	19,620
90 Days or Greater	30,828	50,412
Originated Loans | Commercial | Construction and land development	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Current	317,778	300,385
Originated	319,847	309,190
30-59 Days Past Due	1,603	927
60-89 Days Past Due	9	0
90 Days or Greater	457	7,878
Originated Loans | Commercial | Mortgage	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Current	6,333,351	5,979,482
Originated	6,362,490	6,029,435
30-59 Days Past Due	11,131	24,447
60-89 Days Past Due	3,601	4,179
90 Days or Greater	14,407	21,327
Originated Loans | Commercial | Other commercial real estate	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Current	177,935	158,319
Originated	178,754	160,980
30-59 Days Past Due	139	387
60-89 Days Past Due	210	1,240
90 Days or Greater	470	1,034
Originated Loans | Commercial | Commercial and industrial	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Current	1,076,704	1,033,996
Originated	1,081,158	1,038,530
30-59 Days Past Due	3,336	2,833
60-89 Days Past Due	682	1,096
90 Days or Greater	436	605
Originated Loans | Commercial | Lease financing	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Current	379,532	328,929
Originated	381,763	330,679
30-59 Days Past Due	789	991
60-89 Days Past Due	1,341	138
90 Days or Greater	101	621
Originated Loans | Commercial | Other	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Current	175,251	125,650
Originated	175,336	125,681
30-59 Days Past Due	0	18
60-89 Days Past Due	85	13
90 Days or Greater	0	0
Originated Loans | Noncommerical	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Current	3,554,516	3,514,794
Originated	3,604,950	3,581,620
30-59 Days Past Due	27,169	34,925
60-89 Days Past Due	8,308	12,954
90 Days or Greater	14,957	18,947
Originated Loans | Noncommerical | Mortgage	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Current	955,300	786,626
Originated	982,421	822,889
30-59 Days Past Due	12,885	15,711
60-89 Days Past Due	4,658	7,559
90 Days or Greater	9,578	12,993
Originated Loans | Noncommerical | Revolving mortgage	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Current	2,095,480	2,190,186
Originated	2,113,285	2,210,133
30-59 Days Past Due	10,977	12,868
60-89 Days Past Due	2,378	3,200
90 Days or Greater	4,450	3,879
Originated Loans | Noncommerical | Construction and land development	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Current	121,026	128,764
Originated	122,792	131,992
30-59 Days Past Due	1,193	1,941
60-89 Days Past Due	317	490
90 Days or Greater	256	797
Originated Loans | Noncommerical | Consumer	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Current	382,710	409,218
Originated	386,452	416,606
30-59 Days Past Due	2,114	4,405
60-89 Days Past Due	955	1,705
90 Days or Greater	$673	$1,278

Loans_and_Leases_Aging_Of_The_

Loans and Leases (Aging Of The Outstanding Loans and Leases By Class Excluding Loans Impaired At Acquisition Date) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Loans and Leases	$12,104,298	$11,576,115
Commercial	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Loans and Leases	8,499,348	7,994,495
Commercial | Construction and land development	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Loans and Leases	319,847	309,190
Commercial | Mortgage	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Loans and Leases	6,362,490	6,029,435
Commercial | Other commercial real estate	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Loans and Leases	178,754	160,980
Commercial | Commercial and industrial	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Loans and Leases	1,081,158	1,038,530
Commercial | Lease financing	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Loans and Leases	381,763	330,679
Commercial | Other	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Loans and Leases	175,336	125,681
Noncommerical	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Loans and Leases	3,604,950	3,581,620
Noncommerical | Mortgage	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Loans and Leases	982,421	822,889
Noncommerical | Revolving mortgage	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Loans and Leases	2,113,285	2,210,133
Noncommerical | Construction and land development	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Loans and Leases	122,792	131,992
Noncommerical | Consumer	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Loans and Leases	386,452	416,606
Originated Loans	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days Past Due	44,167	64,528
60-89 Days Past Due	14,236	19,620
90 Days or Greater	30,828	50,412
Total	89,231	134,560
Current	12,015,067	11,441,555
Total Loans and Leases	12,104,298	11,576,115
Originated Loans | Commercial | Construction and land development	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days Past Due	1,603	927
60-89 Days Past Due	9	0
90 Days or Greater	457	7,878
Total	2,069	8,805
Current	317,778	300,385
Total Loans and Leases	319,847	309,190
Originated Loans | Commercial | Mortgage	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days Past Due	11,131	24,447
60-89 Days Past Due	3,601	4,179
90 Days or Greater	14,407	21,327
Total	29,139	49,953
Current	6,333,351	5,979,482
Total Loans and Leases	6,362,490	6,029,435
Originated Loans | Commercial | Other commercial real estate	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days Past Due	139	387
60-89 Days Past Due	210	1,240
90 Days or Greater	470	1,034
Total	819	2,661
Current	177,935	158,319
Total Loans and Leases	178,754	160,980
Originated Loans | Commercial | Commercial and industrial	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days Past Due	3,336	2,833
60-89 Days Past Due	682	1,096
90 Days or Greater	436	605
Total	4,454	4,534
Current	1,076,704	1,033,996
Total Loans and Leases	1,081,158	1,038,530
Originated Loans | Commercial | Lease financing	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days Past Due	789	991
60-89 Days Past Due	1,341	138
90 Days or Greater	101	621
Total	2,231	1,750
Current	379,532	328,929
Total Loans and Leases	381,763	330,679
Originated Loans | Commercial | Other	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days Past Due	0	18
60-89 Days Past Due	85	13
90 Days or Greater	0	0
Total	85	31
Current	175,251	125,650
Total Loans and Leases	175,336	125,681
Originated Loans | Noncommerical	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days Past Due	27,169	34,925
60-89 Days Past Due	8,308	12,954
90 Days or Greater	14,957	18,947
Current	3,554,516	3,514,794
Total Loans and Leases	3,604,950	3,581,620
Originated Loans | Noncommerical | Mortgage	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days Past Due	12,885	15,711
60-89 Days Past Due	4,658	7,559
90 Days or Greater	9,578	12,993
Total	27,121	36,263
Current	955,300	786,626
Total Loans and Leases	982,421	822,889
Originated Loans | Noncommerical | Revolving mortgage	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days Past Due	10,977	12,868
60-89 Days Past Due	2,378	3,200
90 Days or Greater	4,450	3,879
Total	17,805	19,947
Current	2,095,480	2,190,186
Total Loans and Leases	2,113,285	2,210,133
Originated Loans | Noncommerical | Construction and land development	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days Past Due	1,193	1,941
60-89 Days Past Due	317	490
90 Days or Greater	256	797
Total	1,766	3,228
Current	121,026	128,764
Total Loans and Leases	122,792	131,992
Originated Loans | Noncommerical | Consumer	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days Past Due	2,114	4,405
60-89 Days Past Due	955	1,705
90 Days or Greater	673	1,278
Total	3,742	7,388
Current	382,710	409,218
Total Loans and Leases	$386,452	$416,606

Loans_and_Leases_Recorded_Inve

Loans and Leases (Recorded Investment, By Class, In Loans And Leases On Nonaccrual Status And Loans And Leases Greater Than 90 Days Past Due And Still Accruing) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Nonaccruing	$30,801	$79,782
Commercial	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Nonaccruing	26,681	73,954
Commercial | Construction and land development	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Nonaccruing	1,002	26,920
Commercial | Mortgage	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Nonaccruing	23,387	37,603
Commercial | Other commercial real estate	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Nonaccruing	1,150	2,194
Commercial | Commercial and industrial	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Nonaccruing	1,142	7,237
Commercial | Lease financing	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Nonaccruing	0	0
Noncommerical	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Nonaccruing	4,120	5,828
Noncommerical | Mortgage	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Nonaccruing	3,663	5,828
Noncommerical | Construction and land development	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Nonaccruing	457	0
Noncommerical | Revolving mortgage	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Nonaccruing	0	0
Noncommerical | Consumer and Other	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Nonaccruing	0	0
Originated Loans	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Nonaccruing	53,170	89,845
Loans and leases greater than 90 days and accruing	8,784	11,272
Originated Loans | Commercial | Construction and land development	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Nonaccruing	544	14,930
Loans and leases greater than 90 days and accruing	0	541
Originated Loans | Commercial | Mortgage	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Nonaccruing	33,529	50,532
Loans and leases greater than 90 days and accruing	1,113	1,671
Originated Loans | Commercial | Other commercial real estate	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Nonaccruing	1,610	2,319
Loans and leases greater than 90 days and accruing	0	0
Originated Loans | Commercial | Commercial and industrial	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Nonaccruing	1,428	6,972
Loans and leases greater than 90 days and accruing	294	466
Originated Loans | Commercial | Lease financing	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Nonaccruing	832	1,075
Loans and leases greater than 90 days and accruing	0	0
Originated Loans | Noncommerical | Mortgage	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Nonaccruing	14,701	12,603
Loans and leases greater than 90 days and accruing	1,998	3,337
Originated Loans | Noncommerical | Construction and land development	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Nonaccruing	457	668
Loans and leases greater than 90 days and accruing	256	111
Originated Loans | Noncommerical | Revolving mortgage	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Nonaccruing	0	0
Loans and leases greater than 90 days and accruing	4,450	3,877
Originated Loans | Noncommerical | Consumer	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Nonaccruing	69	746
Loans and leases greater than 90 days and accruing	$673	$1,269

Loans_and_Leases_Changes_In_Ca

Loans and Leases (Changes In Carrying Value Of Acquired Impaired Loans) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Acquired	$1,029,426	$1,809,235
Carrying Value of Acquired Impaired Loans [Roll Forward]	'	'
Beginning balance	1,809,235	2,362,152
Reductions for repayments, foreclosures and changes in carrying value, net of accretion	-779,809	-552,917
Ending balance	'	1,809,235
Outstanding principal balance	1,833,955	3,281,958
Loans on the Cost Recovery Method	'	'
Carrying Value of Acquired Impaired Loans [Roll Forward]	'	'
Ending balance	$28,493	$74,479

Loans_and_Leases_Changes_In_Ca1

Loans and Leases (Changes In Carrying Amount Of Accretable Yield) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Changes in Amount of Accretable Yield [Roll Forward]	'	'
Beginning balance	$539,564	$276,690
Accretion	-224,672	-304,023
Reclassifications from nonaccretable difference	92,349	353,708
Changes in expected cash flows that do not affect nonaccretable difference	32,749	213,189
Ending balance	$439,990	$539,564

Allowance_for_Loan_and_Lease_L2

Allowance for Loan and Lease Losses (Summary of Activity In Allowance for Loan and Lease Losses) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Allowance for Loan and Lease Losses [Roll Forward]	'		'	'	'
Reclassification	$7,368	[1]	$0	$0	'
Charge-offs	68,026		100,478	196,840	'
Recoveries	7,289		6,467	6,942	'
Provision for loan and lease losses	-32,255		142,885	232,277	'
Loans and Leases Evaluated for Impairment [Abstract]	'		'	'	'
Net loans and leases	12,900,330		13,066,332	'	'
Loan and Lease Acquired with Deteriorated Credit Quality [Abstract]	'		'	'	'
Allowance for loan and lease losses	233,394		319,018	270,144	227,765
Allowance for Loan and Lease Losses Write-offs, Net	-60,737		-94,011	-189,898	'
Commercial | Construction and land development	'		'	'	'
Allowance for Loans and Leases Evaluated for Impairment [Abstract]	'		'	'	'
Non-specific ALLL	0		'	'	'
Commercial | Mortgage	'		'	'	'
Allowance for Loans and Leases Evaluated for Impairment [Abstract]	'		'	'	'
Non-specific ALLL	0		'	'	'
Commercial | Other commercial real estate	'		'	'	'
Allowance for Loans and Leases Evaluated for Impairment [Abstract]	'		'	'	'
Non-specific ALLL	0		'	'	'
Commercial | Commercial and industrial	'		'	'	'
Allowance for Loans and Leases Evaluated for Impairment [Abstract]	'		'	'	'
Non-specific ALLL	0		'	'	'
Commercial | Lease financing	'		'	'	'
Allowance for Loans and Leases Evaluated for Impairment [Abstract]	'		'	'	'
Non-specific ALLL	0		'	'	'
Commercial | Other	'		'	'	'
Allowance for Loans and Leases Evaluated for Impairment [Abstract]	'		'	'	'
Non-specific ALLL	0		'	'	'
Noncommerical	'		'	'	'
Allowance for Loan and Lease Losses [Roll Forward]	'		'	'	'
Reclassification	7,368		'	'	'
Noncommerical | Mortgage	'		'	'	'
Allowance for Loans and Leases Evaluated for Impairment [Abstract]	'		'	'	'
Non-specific ALLL	0		'	'	'
Noncommerical | Construction and land development	'		'	'	'
Allowance for Loans and Leases Evaluated for Impairment [Abstract]	'		'	'	'
Non-specific ALLL	0		'	'	'
Noncommerical | Revolving mortgage	'		'	'	'
Allowance for Loans and Leases Evaluated for Impairment [Abstract]	'		'	'	'
Non-specific ALLL	0		'	'	'
Noncommerical | Consumer	'		'	'	'
Allowance for Loans and Leases Evaluated for Impairment [Abstract]	'		'	'	'
Non-specific ALLL	0		'	'	'
Noncommerical | Non-specific	'		'	'	'
Allowance for Loan and Lease Losses [Roll Forward]	'		'	'	'
Reclassification	-15,772		'	'	'
Allowance for Loans and Leases Evaluated for Impairment [Abstract]	'		'	'	'
Non-specific ALLL	0		'	'	'
Originated Loans	'		'	'	'
Allowance for Loan and Lease Losses [Roll Forward]	'		'	'	'
Beginning balance	179,046		180,883	176,517	'
Reclassification	7,368	[1]	'	'	'
Charge-offs	33,118		50,208	59,287	'
Recoveries	7,289		6,325	5,854	'
Provisions	19,289		42,046	57,799	'
Ending balance	179,874		179,046	180,883	'
Allowance for Loans and Leases Evaluated for Impairment [Abstract]	'		'	'	'
ALLL for loans and leases individually evaluated for impairment	10,161		18,355	'	'
ALLL for loans and leases collectively evaluated for impairment	169,713		144,841	'	'
Non-specific ALLL	0		15,850	'	'
Total allowance for loan and lease losses	179,874		179,046	180,883	'
Loans and Leases Evaluated for Impairment [Abstract]	'		'	'	'
Loans and leases individually evaluated for impairment	132,146		202,253	'	'
Loans and leases collectively evaluated for impairment	11,972,152		11,373,862	'	'
Net loans and leases	12,104,298		11,576,115	'	'
Loan and Lease Acquired with Deteriorated Credit Quality [Abstract]	'		'	'	'
Allowance for Loan and Lease Losses Write-offs, Net	-25,829		-43,883	-53,433	'
Originated Loans | Commercial | Construction and land development	'		'	'	'
Allowance for Loan and Lease Losses [Roll Forward]	'		'	'	'
Beginning balance	6,031		5,467	'	'
Reclassification	5,141	[1]	'	'	'
Charge-offs	-4,685		-9,546	'	'
Recoveries	1,039		445	'	'
Provisions	2,809		9,665	'	'
Ending balance	10,335		6,031	'	'
Allowance for Loans and Leases Evaluated for Impairment [Abstract]	'		'	'	'
ALLL for loans and leases individually evaluated for impairment	103		2,469	'	'
ALLL for loans and leases collectively evaluated for impairment	10,232		3,562	'	'
Non-specific ALLL	'		0	'	'
Total allowance for loan and lease losses	10,335		6,031	'	'
Loans and Leases Evaluated for Impairment [Abstract]	'		'	'	'
Loans and leases individually evaluated for impairment	2,272		17,075	'	'
Loans and leases collectively evaluated for impairment	317,575		292,115	'	'
Net loans and leases	319,847		309,190	'	'
Originated Loans | Commercial | Mortgage	'		'	'	'
Allowance for Loan and Lease Losses [Roll Forward]	'		'	'	'
Beginning balance	80,229		67,486	'	'
Reclassification	27,421	[1]	'	'	'
Charge-offs	-3,904		-7,081	'	'
Recoveries	996		1,626	'	'
Provisions	-4,485		18,198	'	'
Ending balance	100,257		80,229	'	'
Allowance for Loans and Leases Evaluated for Impairment [Abstract]	'		'	'	'
ALLL for loans and leases individually evaluated for impairment	6,873		11,697	'	'
ALLL for loans and leases collectively evaluated for impairment	93,384		68,532	'	'
Non-specific ALLL	'		0	'	'
Total allowance for loan and lease losses	100,257		80,229	'	'
Loans and Leases Evaluated for Impairment [Abstract]	'		'	'	'
Loans and leases individually evaluated for impairment	97,111		133,804	'	'
Loans and leases collectively evaluated for impairment	6,265,379		5,895,631	'	'
Net loans and leases	6,362,490		6,029,435	'	'
Originated Loans | Commercial | Other commercial real estate	'		'	'	'
Allowance for Loan and Lease Losses [Roll Forward]	'		'	'	'
Beginning balance	2,059		2,169	'	'
Reclassification	-815	[1]	'	'	'
Charge-offs	-312		-254	'	'
Recoveries	109		14	'	'
Provisions	-32		130	'	'
Ending balance	1,009		2,059	'	'
Allowance for Loans and Leases Evaluated for Impairment [Abstract]	'		'	'	'
ALLL for loans and leases individually evaluated for impairment	209		298	'	'
ALLL for loans and leases collectively evaluated for impairment	800		1,761	'	'
Non-specific ALLL	'		0	'	'
Total allowance for loan and lease losses	1,009		2,059	'	'
Loans and Leases Evaluated for Impairment [Abstract]	'		'	'	'
Loans and leases individually evaluated for impairment	1,878		3,375	'	'
Loans and leases collectively evaluated for impairment	176,876		157,605	'	'
Net loans and leases	178,754		160,980	'	'
Originated Loans | Commercial | Commercial and industrial	'		'	'	'
Allowance for Loan and Lease Losses [Roll Forward]	'		'	'	'
Beginning balance	14,050		23,723	'	'
Reclassification	7,551	[1]	'	'	'
Charge-offs	-4,785		-5,472	'	'
Recoveries	1,213		781	'	'
Provisions	4,333		-4,982	'	'
Ending balance	22,362		14,050	'	'
Allowance for Loans and Leases Evaluated for Impairment [Abstract]	'		'	'	'
ALLL for loans and leases individually evaluated for impairment	771		2,133	'	'
ALLL for loans and leases collectively evaluated for impairment	21,591		11,917	'	'
Non-specific ALLL	'		0	'	'
Total allowance for loan and lease losses	22,362		14,050	'	'
Loans and Leases Evaluated for Impairment [Abstract]	'		'	'	'
Loans and leases individually evaluated for impairment	9,300		22,619	'	'
Loans and leases collectively evaluated for impairment	1,071,858		1,015,911	'	'
Net loans and leases	1,081,158		1,038,530	'	'
Originated Loans | Commercial | Lease financing	'		'	'	'
Allowance for Loan and Lease Losses [Roll Forward]	'		'	'	'
Beginning balance	3,521		3,288	'	'
Reclassification	-253	[1]	'	'	'
Charge-offs	-272		-361	'	'
Recoveries	107		96	'	'
Provisions	1,646		498	'	'
Ending balance	4,749		3,521	'	'
Allowance for Loans and Leases Evaluated for Impairment [Abstract]	'		'	'	'
ALLL for loans and leases individually evaluated for impairment	54		202	'	'
ALLL for loans and leases collectively evaluated for impairment	4,695		3,319	'	'
Non-specific ALLL	'		0	'	'
Total allowance for loan and lease losses	4,749		3,521	'	'
Loans and Leases Evaluated for Impairment [Abstract]	'		'	'	'
Loans and leases individually evaluated for impairment	188		804	'	'
Loans and leases collectively evaluated for impairment	381,575		329,875	'	'
Net loans and leases	381,763		330,679	'	'
Originated Loans | Commercial | Other	'		'	'	'
Allowance for Loan and Lease Losses [Roll Forward]	'		'	'	'
Beginning balance	1,175		1,315	'	'
Reclassification	-1,288	[1]	'	'	'
Charge-offs	-6		-28	'	'
Recoveries	1		4	'	'
Provisions	308		-116	'	'
Ending balance	190		1,175	'	'
Allowance for Loans and Leases Evaluated for Impairment [Abstract]	'		'	'	'
ALLL for loans and leases individually evaluated for impairment	0		53	'	'
ALLL for loans and leases collectively evaluated for impairment	190		1,122	'	'
Non-specific ALLL	'		0	'	'
Total allowance for loan and lease losses	190		1,175	'	'
Loans and Leases Evaluated for Impairment [Abstract]	'		'	'	'
Loans and leases individually evaluated for impairment	0		707	'	'
Loans and leases collectively evaluated for impairment	175,336		124,974	'	'
Net loans and leases	175,336		125,681	'	'
Originated Loans | Noncommerical | Mortgage	'		'	'	'
Allowance for Loan and Lease Losses [Roll Forward]	'		'	'	'
Beginning balance	3,836		8,879	'	'
Reclassification	5,717	[1]	'	'	'
Charge-offs	-2,387		-4,790	'	'
Recoveries	559		529	'	'
Provisions	2,786		-782	'	'
Ending balance	10,511		3,836	'	'
Allowance for Loans and Leases Evaluated for Impairment [Abstract]	'		'	'	'
ALLL for loans and leases individually evaluated for impairment	1,586		959	'	'
ALLL for loans and leases collectively evaluated for impairment	8,925		2,877	'	'
Non-specific ALLL	'		0	'	'
Total allowance for loan and lease losses	10,511		3,836	'	'
Loans and Leases Evaluated for Impairment [Abstract]	'		'	'	'
Loans and leases individually evaluated for impairment	15,539		15,836	'	'
Loans and leases collectively evaluated for impairment	966,882		807,053	'	'
Net loans and leases	982,421		822,889	'	'
Originated Loans | Noncommerical | Construction and land development	'		'	'	'
Allowance for Loan and Lease Losses [Roll Forward]	'		'	'	'
Beginning balance	1,721		1,427	'	'
Reclassification	-478	[1]	'	'	'
Charge-offs	-392		-1,047	'	'
Recoveries	209		180	'	'
Provisions	-379		1,161	'	'
Ending balance	681		1,721	'	'
Allowance for Loans and Leases Evaluated for Impairment [Abstract]	'		'	'	'
ALLL for loans and leases individually evaluated for impairment	72		287	'	'
ALLL for loans and leases collectively evaluated for impairment	609		1,434	'	'
Non-specific ALLL	'		0	'	'
Total allowance for loan and lease losses	681		1,721	'	'
Loans and Leases Evaluated for Impairment [Abstract]	'		'	'	'
Loans and leases individually evaluated for impairment	1,108		1,321	'	'
Loans and leases collectively evaluated for impairment	121,684		130,671	'	'
Net loans and leases	122,792		131,992	'	'
Originated Loans | Noncommerical | Revolving mortgage	'		'	'	'
Allowance for Loan and Lease Losses [Roll Forward]	'		'	'	'
Beginning balance	25,185		27,045	'	'
Reclassification	-9,838	[1]	'	'	'
Charge-offs	-6,064		-11,341	'	'
Recoveries	660		698	'	'
Provisions	6,296		8,783	'	'
Ending balance	16,239		25,185	'	'
Allowance for Loans and Leases Evaluated for Impairment [Abstract]	'		'	'	'
ALLL for loans and leases individually evaluated for impairment	372		1	'	'
ALLL for loans and leases collectively evaluated for impairment	15,867		25,184	'	'
Non-specific ALLL	'		0	'	'
Total allowance for loan and lease losses	16,239		25,185	'	'
Loans and Leases Evaluated for Impairment [Abstract]	'		'	'	'
Loans and leases individually evaluated for impairment	3,596		4,203	'	'
Loans and leases collectively evaluated for impairment	2,109,689		2,205,930	'	'
Net loans and leases	2,113,285		2,210,133	'	'
Originated Loans | Noncommerical | Consumer	'		'	'	'
Allowance for Loan and Lease Losses [Roll Forward]	'		'	'	'
Beginning balance	25,389		25,962	'	'
Reclassification	-10,018	[1]	'	'	'
Charge-offs	-10,311		-10,288	'	'
Recoveries	2,396		1,952	'	'
Provisions	6,085		7,763	'	'
Ending balance	13,541		25,389	'	'
Allowance for Loans and Leases Evaluated for Impairment [Abstract]	'		'	'	'
ALLL for loans and leases individually evaluated for impairment	121		256	'	'
ALLL for loans and leases collectively evaluated for impairment	13,420		25,133	'	'
Non-specific ALLL	'		0	'	'
Total allowance for loan and lease losses	13,541		25,389	'	'
Loans and Leases Evaluated for Impairment [Abstract]	'		'	'	'
Loans and leases individually evaluated for impairment	1,154		2,509	'	'
Loans and leases collectively evaluated for impairment	385,298		414,097	'	'
Net loans and leases	386,452		416,606	'	'
Originated Loans | Noncommerical | Non-specific	'		'	'	'
Allowance for Loan and Lease Losses [Roll Forward]	'		'	'	'
Beginning balance	15,850		14,122	'	'
Reclassification	-15,772	[1]	'	'	'
Charge-offs	0		0	'	'
Recoveries	0		0	'	'
Provisions	-78		1,728	'	'
Ending balance	0		15,850	'	'
Allowance for Loans and Leases Evaluated for Impairment [Abstract]	'		'	'	'
ALLL for loans and leases individually evaluated for impairment	0		0	'	'
ALLL for loans and leases collectively evaluated for impairment	0		0	'	'
Non-specific ALLL	'		15,850	'	'
Total allowance for loan and lease losses	0		15,850	'	'
Loans and Leases Evaluated for Impairment [Abstract]	'		'	'	'
Loans and leases individually evaluated for impairment	0		0	'	'
Loans and leases collectively evaluated for impairment	0		0	'	'
Net loans and leases	0		0	'	'
Acquired Loans	'		'	'	'
Allowance for Loan and Lease Losses [Roll Forward]	'		'	'	'
Beginning balance	139,972		89,261	51,248	'
Reclassification	0	[1]	'	'	'
Charge-offs	34,908		50,270	137,553	'
Recoveries	0		142	1,088	'
Provisions	-51,544		100,839	174,478	'
Ending balance	53,520		139,972	89,261	'
Allowance for Loans and Leases Evaluated for Impairment [Abstract]	'		'	'	'
Total allowance for loan and lease losses	53,520		139,972	89,261	'
Loan and Lease Acquired with Deteriorated Credit Quality [Abstract]	'		'	'	'
ALLL for loans and leases acquired with deteriorated credit quality	53,520		139,972	'	'
Loans and leases acquired with deteriorated credit quality	1,029,426		1,809,235	'	'
Allowance for Loan and Lease Losses Write-offs, Net	-34,908		-50,128	-136,465	'
Acquired Loans | Commercial | Construction and land development	'		'	'	'
Allowance for Loan and Lease Losses [Roll Forward]	'		'	'	'
Beginning balance	31,186		16,693	'	'
Charge-offs	-6,924		-8,667	'	'
Recoveries	0		0	'	'
Provisions	-22,942		23,160	'	'
Ending balance	1,320		31,186	'	'
Allowance for Loans and Leases Evaluated for Impairment [Abstract]	'		'	'	'
Total allowance for loan and lease losses	1,320		31,186	'	'
Loan and Lease Acquired with Deteriorated Credit Quality [Abstract]	'		'	'	'
ALLL for loans and leases acquired with deteriorated credit quality	1,320		31,186	'	'
Loans and leases acquired with deteriorated credit quality	78,915		237,906	'	'
Acquired Loans | Commercial | Mortgage	'		'	'	'
Allowance for Loan and Lease Losses [Roll Forward]	'		'	'	'
Beginning balance	50,275		39,557	'	'
Charge-offs	-16,497		-23,509	'	'
Recoveries	0		0	'	'
Provisions	-3,872		34,227	'	'
Ending balance	29,906		50,275	'	'
Allowance for Loans and Leases Evaluated for Impairment [Abstract]	'		'	'	'
Total allowance for loan and lease losses	29,906		50,275	'	'
Loan and Lease Acquired with Deteriorated Credit Quality [Abstract]	'		'	'	'
ALLL for loans and leases acquired with deteriorated credit quality	29,906		50,275	'	'
Loans and leases acquired with deteriorated credit quality	642,891		1,054,473	'	'
Acquired Loans | Commercial | Other commercial real estate	'		'	'	'
Allowance for Loan and Lease Losses [Roll Forward]	'		'	'	'
Beginning balance	11,234		16,862	'	'
Charge-offs	-931		-1,256	'	'
Recoveries	0		0	'	'
Provisions	-8,949		-4,372	'	'
Ending balance	1,354		11,234	'	'
Allowance for Loans and Leases Evaluated for Impairment [Abstract]	'		'	'	'
Total allowance for loan and lease losses	1,354		11,234	'	'
Loan and Lease Acquired with Deteriorated Credit Quality [Abstract]	'		'	'	'
ALLL for loans and leases acquired with deteriorated credit quality	1,354		11,234	'	'
Loans and leases acquired with deteriorated credit quality	41,381		107,119	'	'
Acquired Loans | Commercial | Commercial and industrial	'		'	'	'
Allowance for Loan and Lease Losses [Roll Forward]	'		'	'	'
Beginning balance	8,897		5,500	'	'
Charge-offs	-4,092		-8,442	'	'
Recoveries	0		0	'	'
Provisions	470		11,839	'	'
Ending balance	5,275		8,897	'	'
Allowance for Loans and Leases Evaluated for Impairment [Abstract]	'		'	'	'
Total allowance for loan and lease losses	5,275		8,897	'	'
Loan and Lease Acquired with Deteriorated Credit Quality [Abstract]	'		'	'	'
ALLL for loans and leases acquired with deteriorated credit quality	5,275		8,897	'	'
Loans and leases acquired with deteriorated credit quality	17,254		49,463	'	'
Acquired Loans | Commercial | Lease financing	'		'	'	'
Allowance for Loan and Lease Losses [Roll Forward]	'		'	'	'
Beginning balance	0		13	'	'
Charge-offs	0		0	'	'
Recoveries	0		0	'	'
Provisions	0		-13	'	'
Ending balance	0		0	'	'
Allowance for Loans and Leases Evaluated for Impairment [Abstract]	'		'	'	'
Total allowance for loan and lease losses	0		0	'	'
Loan and Lease Acquired with Deteriorated Credit Quality [Abstract]	'		'	'	'
ALLL for loans and leases acquired with deteriorated credit quality	0		0	'	'
Loans and leases acquired with deteriorated credit quality	0		0	'	'
Acquired Loans | Noncommerical | Mortgage	'		'	'	'
Allowance for Loan and Lease Losses [Roll Forward]	'		'	'	'
Beginning balance	19,837		5,433	'	'
Charge-offs	-2,548		-4,139	'	'
Recoveries	0		142	'	'
Provisions	-5,487		18,401	'	'
Ending balance	11,802		19,837	'	'
Allowance for Loans and Leases Evaluated for Impairment [Abstract]	'		'	'	'
Total allowance for loan and lease losses	11,802		19,837	'	'
Loan and Lease Acquired with Deteriorated Credit Quality [Abstract]	'		'	'	'
ALLL for loans and leases acquired with deteriorated credit quality	11,802		19,837	'	'
Loans and leases acquired with deteriorated credit quality	213,851		297,926	'	'
Acquired Loans | Noncommerical | Construction and land development	'		'	'	'
Allowance for Loan and Lease Losses [Roll Forward]	'		'	'	'
Beginning balance	8,287		4,652	'	'
Charge-offs	-3,435		-2,885	'	'
Recoveries	0		0	'	'
Provisions	-4,170		6,520	'	'
Ending balance	682		8,287	'	'
Allowance for Loans and Leases Evaluated for Impairment [Abstract]	'		'	'	'
Total allowance for loan and lease losses	682		8,287	'	'
Loan and Lease Acquired with Deteriorated Credit Quality [Abstract]	'		'	'	'
ALLL for loans and leases acquired with deteriorated credit quality	682		8,287	'	'
Loans and leases acquired with deteriorated credit quality	2,583		20,793	'	'
Acquired Loans | Noncommerical | Revolving mortgage	'		'	'	'
Allowance for Loan and Lease Losses [Roll Forward]	'		'	'	'
Beginning balance	9,754		77	'	'
Charge-offs	-396		-1,119	'	'
Recoveries	0		0	'	'
Provisions	-6,399		10,796	'	'
Ending balance	2,959		9,754	'	'
Allowance for Loans and Leases Evaluated for Impairment [Abstract]	'		'	'	'
Total allowance for loan and lease losses	2,959		9,754	'	'
Loan and Lease Acquired with Deteriorated Credit Quality [Abstract]	'		'	'	'
ALLL for loans and leases acquired with deteriorated credit quality	2,959		9,754	'	'
Loans and leases acquired with deteriorated credit quality	30,834		38,710	'	'
Acquired Loans | Noncommerical | Consumer and Other	'		'	'	'
Allowance for Loan and Lease Losses [Roll Forward]	'		'	'	'
Beginning balance	502		474	'	'
Charge-offs	-85		-253	'	'
Recoveries	0		0	'	'
Provisions	-195		281	'	'
Ending balance	222		502	'	'
Allowance for Loans and Leases Evaluated for Impairment [Abstract]	'		'	'	'
Total allowance for loan and lease losses	222		502	'	'
Loan and Lease Acquired with Deteriorated Credit Quality [Abstract]	'		'	'	'
ALLL for loans and leases acquired with deteriorated credit quality	222		502	'	'
Loans and leases acquired with deteriorated credit quality	$1,717		$2,845	'	'
[1]	Reclassification results from enhancements to the ALLL calculation during the second quarter of 2013 that resulted in the allocation of $15.8 million previously designated as 'nonspecific' to other loan classes and the absorption of $7.4 million of the reserve for unfunded commitments related to unfunded, revocable loan commitments into the ALLL. Further discussion is contained in Note A.

Allowance_for_Loan_and_Lease_L3

Allowance for Loan and Lease Losses (Allocation of Allowance for Loan and Lease Losses) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'	'	'
Reclassification	$7,368	[1]	$0	$0	'
Allowance for loan and lease losses	233,394		319,018	270,144	227,765
Noncommerical	'		'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'	'	'
Reclassification	7,368		'	'	'
Noncommerical | Non-specific	'		'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'	'	'
Reclassification	-15,772		'	'	'
Originated Loans	'		'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'	'	'
Reclassification	7,368	[1]	'	'	'
Unpaid principal balance	145,485		221,508	'	'
ALLL for loans and leases individually evaluated for impairment	10,161		18,355	'	'
Financing Receivable, Individually Evaluated for Impairment	132,146		202,253	'	'
Average balance	151,330		158,426	119,228	'
Interest income recognized	7,817		6,735	2,341	'
Originated Loans | Commercial | Construction and land development	'		'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'	'	'
Reclassification	5,141	[1]	'	'	'
Unpaid principal balance	7,306		32,898	'	'
ALLL for loans and leases individually evaluated for impairment	103		2,469	'	'
Financing Receivable, Individually Evaluated for Impairment	2,272		17,075	'	'
Average balance	6,414		22,493	26,612	'
Interest income recognized	270		399	56	'
Originated Loans | Commercial | Mortgage	'		'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'	'	'
Reclassification	27,421	[1]	'	'	'
Unpaid principal balance	103,522		136,743	'	'
ALLL for loans and leases individually evaluated for impairment	6,873		11,697	'	'
Financing Receivable, Individually Evaluated for Impairment	97,111		133,804	'	'
Average balance	105,628		96,082	65,729	'
Interest income recognized	5,702		4,630	1,330	'
Originated Loans | Commercial | Other commercial real estate	'		'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'	'	'
Reclassification	-815	[1]	'	'	'
Unpaid principal balance	2,279		3,475	'	'
ALLL for loans and leases individually evaluated for impairment	209		298	'	'
Financing Receivable, Individually Evaluated for Impairment	1,878		3,375	'	'
Average balance	2,658		2,690	1,368	'
Interest income recognized	144		142	55	'
Originated Loans | Commercial | Commercial and industrial	'		'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'	'	'
Reclassification	7,551	[1]	'	'	'
Unpaid principal balance	10,393		22,619	'	'
ALLL for loans and leases individually evaluated for impairment	771		2,133	'	'
Financing Receivable, Individually Evaluated for Impairment	9,300		22,619	'	'
Average balance	12,772		13,658	12,984	'
Interest income recognized	642		788	456	'
Originated Loans | Commercial | Lease financing	'		'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'	'	'
Reclassification	-253	[1]	'	'	'
Unpaid principal balance	188		804	'	'
ALLL for loans and leases individually evaluated for impairment	54		202	'	'
Financing Receivable, Individually Evaluated for Impairment	188		804	'	'
Average balance	350		497	587	'
Interest income recognized	22		37	21	'
Originated Loans | Commercial | Other	'		'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'	'	'
Reclassification	-1,288	[1]	'	'	'
Unpaid principal balance	'		707	'	'
ALLL for loans and leases individually evaluated for impairment	0		53	'	'
Financing Receivable, Individually Evaluated for Impairment	0		707	'	'
Average balance	0		424	38	'
Interest income recognized	0		23	0	'
Originated Loans | Noncommerical | Mortgage	'		'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'	'	'
Reclassification	5,717	[1]	'	'	'
Unpaid principal balance	15,939		16,229	'	'
ALLL for loans and leases individually evaluated for impairment	1,586		959	'	'
Financing Receivable, Individually Evaluated for Impairment	15,539		15,836	'	'
Average balance	15,470		14,951	9,252	'
Interest income recognized	444		586	300	'
Originated Loans | Noncommerical | Construction and land development	'		'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'	'	'
Reclassification	-478	[1]	'	'	'
Unpaid principal balance	1,108		1,321	'	'
ALLL for loans and leases individually evaluated for impairment	72		287	'	'
Financing Receivable, Individually Evaluated for Impairment	1,108		1,321	'	'
Average balance	958		2,850	2,022	'
Interest income recognized	55		41	105	'
Originated Loans | Noncommerical | Revolving mortgage	'		'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'	'	'
Reclassification	-9,838	[1]	'	'	'
Unpaid principal balance	3,596		4,203	'	'
ALLL for loans and leases individually evaluated for impairment	372		1	'	'
Financing Receivable, Individually Evaluated for Impairment	3,596		4,203	'	'
Average balance	5,653		2,931	0	'
Interest income recognized	485		68	0	'
Originated Loans | Noncommerical | Consumer	'		'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'	'	'
Reclassification	-10,018	[1]	'	'	'
Unpaid principal balance	1,154		2,509	'	'
ALLL for loans and leases individually evaluated for impairment	121		256	'	'
Financing Receivable, Individually Evaluated for Impairment	1,154		2,509	'	'
Average balance	1,427		1,850	636	'
Interest income recognized	53		21	18	'
Originated Loans | Noncommerical | Non-specific	'		'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'	'	'
Reclassification	-15,772	[1]	'	'	'
Unpaid principal balance	'		0	'	'
ALLL for loans and leases individually evaluated for impairment	0		0	'	'
Financing Receivable, Individually Evaluated for Impairment	0		0	'	'
Originated Loans | With A Recorded Allowance	'		'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'	'	'
Total impaired noncovered loans and leases	83,678		68,463	'	'
Originated Loans | With A Recorded Allowance | Commercial | Construction and land development	'		'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'	'	'
Allowance for loan and lease losses	1,025		5,941	'	'
Originated Loans | With A Recorded Allowance | Commercial | Mortgage	'		'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'	'	'
Allowance for loan and lease losses	57,819		39,648	'	'
Originated Loans | With A Recorded Allowance | Commercial | Other commercial real estate	'		'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'	'	'
Allowance for loan and lease losses	783		1,425	'	'
Originated Loans | With A Recorded Allowance | Commercial | Commercial and industrial	'		'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'	'	'
Allowance for loan and lease losses	7,197		7,429	'	'
Originated Loans | With A Recorded Allowance | Commercial | Lease financing	'		'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'	'	'
Allowance for loan and lease losses	133		665	'	'
Originated Loans | With A Recorded Allowance | Commercial | Other	'		'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'	'	'
Allowance for loan and lease losses	'		0	'	'
Originated Loans | With A Recorded Allowance | Noncommerical | Mortgage	'		'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'	'	'
Allowance for loan and lease losses	11,534		9,346	'	'
Originated Loans | With A Recorded Allowance | Noncommerical | Construction and land development	'		'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'	'	'
Allowance for loan and lease losses	651		1,162	'	'
Originated Loans | With A Recorded Allowance | Noncommerical | Revolving mortgage	'		'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'	'	'
Allowance for loan and lease losses	3,382		1,238	'	'
Originated Loans | With A Recorded Allowance | Noncommerical | Consumer	'		'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'	'	'
Allowance for loan and lease losses	1,154		1,609	'	'
Originated Loans | With A Recorded Allowance | Noncommerical | Non-specific	'		'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'	'	'
Allowance for loan and lease losses	'		0	'	'
Originated Loans | With No Recorded Allowance	'		'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'	'	'
Allowance for loan and lease losses	48,468		133,790	'	'
Originated Loans | With No Recorded Allowance | Commercial | Construction and land development	'		'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'	'	'
Allowance for loan and lease losses	1,247		11,134	'	'
Originated Loans | With No Recorded Allowance | Commercial | Mortgage	'		'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'	'	'
Allowance for loan and lease losses	39,292		94,156	'	'
Originated Loans | With No Recorded Allowance | Commercial | Other commercial real estate	'		'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'	'	'
Allowance for loan and lease losses	1,095		1,950	'	'
Originated Loans | With No Recorded Allowance | Commercial | Commercial and industrial	'		'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'	'	'
Allowance for loan and lease losses	2,103		15,190	'	'
Originated Loans | With No Recorded Allowance | Commercial | Lease financing	'		'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'	'	'
Allowance for loan and lease losses	55		139	'	'
Originated Loans | With No Recorded Allowance | Commercial | Other	'		'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'	'	'
Allowance for loan and lease losses	'		707	'	'
Originated Loans | With No Recorded Allowance | Noncommerical | Mortgage	'		'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'	'	'
Allowance for loan and lease losses	4,005		6,490	'	'
Originated Loans | With No Recorded Allowance | Noncommerical | Construction and land development	'		'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'	'	'
Allowance for loan and lease losses	457		159	'	'
Originated Loans | With No Recorded Allowance | Noncommerical | Revolving mortgage	'		'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'	'	'
Allowance for loan and lease losses	214		2,965	'	'
Originated Loans | With No Recorded Allowance | Noncommerical | Consumer	'		'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'	'	'
Allowance for loan and lease losses	0		900	'	'
Originated Loans | With No Recorded Allowance | Noncommerical | Non-specific	'		'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'	'	'
Allowance for loan and lease losses	'		0	'	'
Acquired Loans	'		'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'	'	'
Reclassification	0	[1]	'	'	'
Acquired loans which have adverse change in expected cash flows	$459,947		'	'	'
[1]	Reclassification results from enhancements to the ALLL calculation during the second quarter of 2013 that resulted in the allocation of $15.8 million previously designated as 'nonspecific' to other loan classes and the absorption of $7.4 million of the reserve for unfunded commitments related to unfunded, revocable loan commitments into the ALLL. Further discussion is contained in Note A.

Allowance_for_Loan_and_Lease_L4

Allowance for Loan and Lease Losses (Troubled Debt Restructuring) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Financing Receivable, Modifications [Line Items]	'	'
Accruing	$175,955,000	$253,388,000
Nonaccruing	30,801,000	79,782,000
Financing Receivable, Modifications, Recorded Investment	206,756,000	333,170,000
Impaired Loans and Leases, Baseline for Meaurement	500,000	'
Originated Loans	'	'
Financing Receivable, Modifications [Line Items]	'	'
Nonaccruing	53,170,000	89,845,000
Financing Receivable, Modifications, Recorded Investment	104,448,000	139,963,000
Acquired Loans	'	'
Financing Receivable, Modifications [Line Items]	'	'
Financing Receivable, Modifications, Recorded Investment	102,308,000	193,207,000
Commercial	'	'
Financing Receivable, Modifications [Line Items]	'	'
Accruing	147,712,000	220,397,000
Nonaccruing	26,681,000	73,954,000
Financing Receivable, Modifications, Recorded Investment	174,393,000	294,351,000
Commercial | Construction and land development	'	'
Financing Receivable, Modifications [Line Items]	'	'
Accruing	21,032,000	47,368,000
Nonaccruing	1,002,000	26,920,000
Financing Receivable, Modifications, Recorded Investment	22,034,000	74,288,000
Commercial | Construction and land development | Originated Loans	'	'
Financing Receivable, Modifications [Line Items]	'	'
Nonaccruing	544,000	14,930,000
Commercial | Mortgage	'	'
Financing Receivable, Modifications [Line Items]	'	'
Accruing	113,323,000	151,728,000
Nonaccruing	23,387,000	37,603,000
Financing Receivable, Modifications, Recorded Investment	136,710,000	189,331,000
Commercial | Mortgage | Originated Loans	'	'
Financing Receivable, Modifications [Line Items]	'	'
Nonaccruing	33,529,000	50,532,000
Commercial | Other commercial real estate	'	'
Financing Receivable, Modifications [Line Items]	'	'
Accruing	3,470,000	10,137,000
Nonaccruing	1,150,000	2,194,000
Financing Receivable, Modifications, Recorded Investment	4,620,000	12,331,000
Commercial | Other commercial real estate | Originated Loans	'	'
Financing Receivable, Modifications [Line Items]	'	'
Nonaccruing	1,610,000	2,319,000
Commercial | Commercial and industrial	'	'
Financing Receivable, Modifications [Line Items]	'	'
Accruing	9,838,000	10,940,000
Nonaccruing	1,142,000	7,237,000
Financing Receivable, Modifications, Recorded Investment	10,980,000	18,177,000
Commercial | Commercial and industrial | Originated Loans	'	'
Financing Receivable, Modifications [Line Items]	'	'
Nonaccruing	1,428,000	6,972,000
Commercial | Lease financing	'	'
Financing Receivable, Modifications [Line Items]	'	'
Accruing	49,000	224,000
Nonaccruing	0	0
Financing Receivable, Modifications, Recorded Investment	49,000	224,000
Commercial | Lease financing | Originated Loans	'	'
Financing Receivable, Modifications [Line Items]	'	'
Nonaccruing	832,000	1,075,000
Noncommerical	'	'
Financing Receivable, Modifications [Line Items]	'	'
Accruing	28,243,000	32,991,000
Nonaccruing	4,120,000	5,828,000
Financing Receivable, Modifications, Recorded Investment	32,363,000	38,819,000
Noncommerical | Mortgage	'	'
Financing Receivable, Modifications [Line Items]	'	'
Accruing	23,343,000	28,777,000
Nonaccruing	3,663,000	5,828,000
Financing Receivable, Modifications, Recorded Investment	27,006,000	34,605,000
Noncommerical | Mortgage | Originated Loans	'	'
Financing Receivable, Modifications [Line Items]	'	'
Nonaccruing	14,701,000	12,603,000
Noncommerical | Construction and land development	'	'
Financing Receivable, Modifications [Line Items]	'	'
Accruing	651,000	1,657,000
Nonaccruing	457,000	0
Financing Receivable, Modifications, Recorded Investment	1,108,000	1,657,000
Noncommerical | Construction and land development | Originated Loans	'	'
Financing Receivable, Modifications [Line Items]	'	'
Nonaccruing	457,000	668,000
Noncommerical | Revolving mortgage	'	'
Financing Receivable, Modifications [Line Items]	'	'
Accruing	3,095,000	48,000
Nonaccruing	0	0
Financing Receivable, Modifications, Recorded Investment	3,095,000	48,000
Noncommerical | Revolving mortgage | Originated Loans	'	'
Financing Receivable, Modifications [Line Items]	'	'
Nonaccruing	0	0
Noncommerical | Consumer and Other	'	'
Financing Receivable, Modifications [Line Items]	'	'
Accruing	1,154,000	2,509,000
Nonaccruing	0	0
Financing Receivable, Modifications, Recorded Investment	$1,154,000	$2,509,000

Allowance_for_Loan_and_Lease_L5

Allowance for Loan and Lease Losses (Note Restructurings During Period) (Details) (USD $)	3 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
	loans	loans	loans	loans
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Recorded Investment	$206,756	$333,170	$206,756	$333,170
Commercial	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Recorded Investment	174,393	294,351	174,393	294,351
Commercial | Construction and land development	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Recorded Investment	22,034	74,288	22,034	74,288
Commercial | Mortgage	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Recorded Investment	136,710	189,331	136,710	189,331
Commercial | Other commercial real estate	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Recorded Investment	4,620	12,331	4,620	12,331
Commercial | Commercial and industrial	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Recorded Investment	10,980	18,177	10,980	18,177
Commercial | Lease financing	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Recorded Investment	49	224	49	224
Noncommerical	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Recorded Investment	32,363	38,819	32,363	38,819
Noncommerical | Mortgage	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Recorded Investment	27,006	34,605	27,006	34,605
Noncommerical | Construction and land development	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Recorded Investment	1,108	1,657	1,108	1,657
Noncommerical | Revolving mortgage	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Recorded Investment	3,095	48	3,095	48
Originated Loans	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Recorded Investment	104,448	139,963	104,448	139,963
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	7	10	13	33
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	803	2,703	1,080	7,479
Financing Receivable, Modifications, Number of Contracts	27	29	148	150
Financing Receivable, Modifications, Post-Modification Recorded Investment	6,353	7,942	24,787	47,333
Originated Loans | Interest Only Loan	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	1	3	1	5
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0	1,900	0	2,333
Financing Receivable, Modifications, Number of Contracts	2	4	10	18
Financing Receivable, Modifications, Post-Modification Recorded Investment	503	1,674	2,547	5,674
Originated Loans | Interest Only Loan | Residential Mortgage	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0	1	'	'
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0	559	'	'
Financing Receivable, Modifications, Number of Contracts	0	0	'	'
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	0	'	'
Originated Loans | Interest Only Loan | Construction and land development	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0	0	'	'
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0	0	'	'
Financing Receivable, Modifications, Number of Contracts	0	1	'	'
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	476	'	'
Originated Loans | Loan Term Extension	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0	5	0	19
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0	254	0	3,780
Financing Receivable, Modifications, Number of Contracts	4	10	23	86
Financing Receivable, Modifications, Post-Modification Recorded Investment	1,011	2,367	3,918	29,143
Originated Loans | Below Market Interest Rate	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	3	2	4	9
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	673	549	746	1,366
Financing Receivable, Modifications, Number of Contracts	20	15	77	42
Financing Receivable, Modifications, Post-Modification Recorded Investment	4,807	3,901	15,235	11,096
Originated Loans | Below Market Interest Rate | Consumer	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0	0	'	'
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0	0	'	'
Financing Receivable, Modifications, Number of Contracts	0	2	'	'
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	16	'	'
Originated Loans | Discharge of Debt	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	3	0	8	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	130	0	334	0
Financing Receivable, Modifications, Number of Contracts	1	0	38	0
Financing Receivable, Modifications, Post-Modification Recorded Investment	32	0	3,087	0
Originated Loans | Commercial | Interest Only Loan | Construction and land development	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	'	'	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	'	'	0	0
Financing Receivable, Modifications, Number of Contracts	'	'	0	2
Financing Receivable, Modifications, Post-Modification Recorded Investment	'	'	0	316
Originated Loans | Commercial | Interest Only Loan | Mortgage	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	1	1	1	3
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0	595	0	1,440
Financing Receivable, Modifications, Number of Contracts	1	1	6	12
Financing Receivable, Modifications, Post-Modification Recorded Investment	305	861	1,520	3,891
Originated Loans | Commercial | Interest Only Loan | Other commercial real estate	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	'	'	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	'	'	0	0
Financing Receivable, Modifications, Number of Contracts	'	'	1	0
Financing Receivable, Modifications, Post-Modification Recorded Investment	'	'	0	0
Originated Loans | Commercial | Interest Only Loan | Commercial and industrial	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0	1	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0	746	0	0
Financing Receivable, Modifications, Number of Contracts	1	2	2	2
Financing Receivable, Modifications, Post-Modification Recorded Investment	198	337	397	574
Originated Loans | Commercial | Loan Term Extension | Construction and land development	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	'	'	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	'	'	0	0
Financing Receivable, Modifications, Number of Contracts	'	'	0	2
Financing Receivable, Modifications, Post-Modification Recorded Investment	'	'	0	7,667
Originated Loans | Commercial | Loan Term Extension | Mortgage	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0	3	0	13
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0	122	0	3,456
Financing Receivable, Modifications, Number of Contracts	1	7	9	50
Financing Receivable, Modifications, Post-Modification Recorded Investment	770	2,319	3,270	16,818
Originated Loans | Commercial | Loan Term Extension | Other commercial real estate	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	'	'	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	'	'	0	0
Financing Receivable, Modifications, Number of Contracts	'	'	0	3
Financing Receivable, Modifications, Post-Modification Recorded Investment	'	'	0	1,318
Originated Loans | Commercial | Loan Term Extension | Commercial and industrial	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0	1	0	4
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0	24	0	169
Financing Receivable, Modifications, Number of Contracts	0	1	1	11
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	24	47	1,363
Originated Loans | Commercial | Loan Term Extension | Lease financing	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	'	'	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	'	'	0	0
Financing Receivable, Modifications, Number of Contracts	'	'	0	3
Financing Receivable, Modifications, Post-Modification Recorded Investment	'	'	0	166
Originated Loans | Commercial | Below Market Interest Rate | Construction and land development	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	'	'	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	'	'	0	0
Financing Receivable, Modifications, Number of Contracts	'	'	3	1
Financing Receivable, Modifications, Post-Modification Recorded Investment	'	'	609	227
Originated Loans | Commercial | Below Market Interest Rate | Mortgage	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	1	1	1	1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	295	490	295	490
Financing Receivable, Modifications, Number of Contracts	8	8	28	12
Financing Receivable, Modifications, Post-Modification Recorded Investment	3,964	3,444	10,873	7,333
Originated Loans | Commercial | Below Market Interest Rate | Other commercial real estate	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	'	'	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	'	'	0	0
Financing Receivable, Modifications, Number of Contracts	'	'	2	0
Financing Receivable, Modifications, Post-Modification Recorded Investment	'	'	378	0
Originated Loans | Commercial | Below Market Interest Rate | Commercial and industrial	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0	0	0	1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0	0	0	0
Financing Receivable, Modifications, Number of Contracts	0	3	3	11
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	311	851	1,584
Originated Loans | Commercial | Other Concession | Mortgage	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	'	'	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	'	'	0	0
Financing Receivable, Modifications, Number of Contracts	'	'	0	3
Financing Receivable, Modifications, Post-Modification Recorded Investment	'	'	0	1,036
Originated Loans | Noncommerical | Interest Only Loan | Mortgage	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	'	'	0	2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	'	'	0	893
Financing Receivable, Modifications, Number of Contracts	'	'	1	2
Financing Receivable, Modifications, Post-Modification Recorded Investment	'	'	630	893
Originated Loans | Noncommerical | Loan Term Extension | Mortgage	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0	1	0	2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0	108	0	155
Financing Receivable, Modifications, Number of Contracts	3	1	11	9
Financing Receivable, Modifications, Post-Modification Recorded Investment	241	16	539	521
Originated Loans | Noncommerical | Loan Term Extension | Construction and land development	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	'	'	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	'	'	0	0
Financing Receivable, Modifications, Number of Contracts	'	'	0	1
Financing Receivable, Modifications, Post-Modification Recorded Investment	'	'	0	158
Originated Loans | Noncommerical | Loan Term Extension | Consumer	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0	0	0	0
Financing Receivable, Modifications, Number of Contracts	0	1	2	7
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	8	62	1,132
Originated Loans | Noncommerical | Below Market Interest Rate | Mortgage	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0	1	0	5
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0	59	0	828
Financing Receivable, Modifications, Number of Contracts	6	2	21	13
Financing Receivable, Modifications, Post-Modification Recorded Investment	347	130	1,235	1,887
Originated Loans | Noncommerical | Below Market Interest Rate | Construction and land development	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	'	'	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	'	'	0	0
Financing Receivable, Modifications, Number of Contracts	'	'	4	0
Financing Receivable, Modifications, Post-Modification Recorded Investment	'	'	269	0
Originated Loans | Noncommerical | Below Market Interest Rate | Revolving mortgage	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	2	0	3	1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	378	0	451	48
Financing Receivable, Modifications, Number of Contracts	6	0	13	1
Financing Receivable, Modifications, Post-Modification Recorded Investment	496	0	801	48
Originated Loans | Noncommerical | Below Market Interest Rate | Consumer	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	'	'	0	1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	'	'	0	0
Financing Receivable, Modifications, Number of Contracts	'	'	3	4
Financing Receivable, Modifications, Post-Modification Recorded Investment	'	'	219	17
Originated Loans | Noncommerical | Discharge of Debt | Mortgage	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0	0	2	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0	0	60	0
Financing Receivable, Modifications, Number of Contracts	1	0	7	0
Financing Receivable, Modifications, Post-Modification Recorded Investment	32	0	510	0
Originated Loans | Noncommerical | Discharge of Debt | Revolving mortgage	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	3	0	6	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	130	0	274	0
Financing Receivable, Modifications, Number of Contracts	0	0	31	0
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	0	2,577	0
Originated Loans | Noncommerical | Other Concession	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	'	'	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	'	'	0	0
Financing Receivable, Modifications, Number of Contracts	'	'	0	4
Financing Receivable, Modifications, Post-Modification Recorded Investment	'	'	0	1,420
Originated Loans | Noncommerical | Other Concession | Mortgage	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	'	'	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	'	'	0	0
Financing Receivable, Modifications, Number of Contracts	'	'	0	1
Financing Receivable, Modifications, Post-Modification Recorded Investment	'	'	0	384
Acquired Loans	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Recorded Investment	102,308	193,207	102,308	193,207
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	3	9	14	30
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	2,340	8,521	12,059	22,153
Financing Receivable, Modifications, Number of Contracts	5	12	47	89
Financing Receivable, Modifications, Post-Modification Recorded Investment	768	26,119	24,477	76,291
Acquired Loans | Interest Only Loan	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0	0	2	2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0	0	2,889	590
Financing Receivable, Modifications, Number of Contracts	2	1	8	9
Financing Receivable, Modifications, Post-Modification Recorded Investment	403	2,994	5,530	14,162
Acquired Loans | Loan Term Extension	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	1	1	3	3
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	157	66	5,277	8,332
Financing Receivable, Modifications, Number of Contracts	1	0	12	19
Financing Receivable, Modifications, Post-Modification Recorded Investment	100	0	8,637	15,147
Acquired Loans | Below Market Interest Rate	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	2	7	9	24
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	2,183	8,401	3,893	13,177
Financing Receivable, Modifications, Number of Contracts	2	11	26	60
Financing Receivable, Modifications, Post-Modification Recorded Investment	265	23,125	10,200	46,928
Acquired Loans | Other Concession	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0	1	'	'
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0	54	'	'
Financing Receivable, Modifications, Number of Contracts	0	0	'	'
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	0	'	'
Acquired Loans | Commercial | Interest Only Loan | Construction and land development	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	'	'	1	1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	'	'	2,590	356
Financing Receivable, Modifications, Number of Contracts	'	'	1	2
Financing Receivable, Modifications, Post-Modification Recorded Investment	'	'	2,590	496
Acquired Loans | Commercial | Interest Only Loan | Mortgage	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0	0	1	1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0	0	299	234
Financing Receivable, Modifications, Number of Contracts	2	0	5	4
Financing Receivable, Modifications, Post-Modification Recorded Investment	403	0	2,880	10,404
Acquired Loans | Commercial | Interest Only Loan | Other commercial real estate	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0	0	0	0
Financing Receivable, Modifications, Number of Contracts	0	1	0	1
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	2,994	0	2,994
Acquired Loans | Commercial | Interest Only Loan | Commercial and industrial	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	'	'	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	'	'	0	0
Financing Receivable, Modifications, Number of Contracts	'	'	1	1
Financing Receivable, Modifications, Post-Modification Recorded Investment	'	'	21	170
Acquired Loans | Commercial | Loan Term Extension | Construction and land development	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0	0	0	1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0	0	0	3,703
Financing Receivable, Modifications, Number of Contracts	1	0	6	9
Financing Receivable, Modifications, Post-Modification Recorded Investment	100	0	2,247	7,294
Acquired Loans | Commercial | Loan Term Extension | Mortgage	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	1	0	1	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	157	0	157	0
Financing Receivable, Modifications, Number of Contracts	0	0	1	4
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	0	157	2,584
Acquired Loans | Commercial | Loan Term Extension | Commercial and industrial	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	'	'	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	'	'	0	0
Financing Receivable, Modifications, Number of Contracts	'	'	2	2
Financing Receivable, Modifications, Post-Modification Recorded Investment	'	'	1,080	158
Acquired Loans | Commercial | Below Market Interest Rate | Construction and land development	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0	3	0	5
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0	7,050	0	8,781
Financing Receivable, Modifications, Number of Contracts	0	3	2	13
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	17,615	106	19,953
Acquired Loans | Commercial | Below Market Interest Rate | Mortgage	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	2	1	4	6
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	2,183	1,229	2,418	3,906
Financing Receivable, Modifications, Number of Contracts	1	4	12	18
Financing Receivable, Modifications, Post-Modification Recorded Investment	165	2,715	7,513	19,100
Acquired Loans | Commercial | Below Market Interest Rate | Other commercial real estate	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	'	'	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	'	'	0	0
Financing Receivable, Modifications, Number of Contracts	'	'	0	2
Financing Receivable, Modifications, Post-Modification Recorded Investment	'	'	0	1,954
Acquired Loans | Commercial | Below Market Interest Rate | Commercial and industrial	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0	0	0	2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0	0	0	0
Financing Receivable, Modifications, Number of Contracts	0	1	2	5
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	253	493	1,299
Acquired Loans | Commercial | Other Concession | Mortgage	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	'	'	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	'	'	0	0
Financing Receivable, Modifications, Number of Contracts	'	'	1	0
Financing Receivable, Modifications, Post-Modification Recorded Investment	'	'	110	0
Acquired Loans | Noncommerical | Interest Only Loan | Mortgage	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	'	'	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	'	'	0	0
Financing Receivable, Modifications, Number of Contracts	'	'	1	1
Financing Receivable, Modifications, Post-Modification Recorded Investment	'	'	39	98
Acquired Loans | Noncommerical | Loan Term Extension | Mortgage	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0	1	2	2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0	66	5,120	4,629
Financing Receivable, Modifications, Number of Contracts	0	0	3	4
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	0	5,153	5,111
Acquired Loans | Noncommerical | Below Market Interest Rate | Mortgage	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0	3	5	10
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0	122	1,475	490
Financing Receivable, Modifications, Number of Contracts	1	3	10	21
Financing Receivable, Modifications, Post-Modification Recorded Investment	100	2,542	2,088	4,622
Acquired Loans | Noncommerical | Below Market Interest Rate | Construction and land development	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	'	'	0	1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	'	'	0	0
Financing Receivable, Modifications, Number of Contracts	'	'	0	1
Financing Receivable, Modifications, Post-Modification Recorded Investment	'	'	0	0
Acquired Loans | Noncommerical | Other Concession	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	'	'	0	1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	'	'	0	54
Financing Receivable, Modifications, Number of Contracts	'	'	1	1
Financing Receivable, Modifications, Post-Modification Recorded Investment	'	'	110	54
Acquired Loans | Noncommerical | Other Concession | Mortgage	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0	1	0	1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0	54	0	54
Financing Receivable, Modifications, Number of Contracts	0	0	0	1
Financing Receivable, Modifications, Post-Modification Recorded Investment	$0	$0	$0	$54

Premises_and_Equipment_Major_C

Premises and Equipment (Major Classifications) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Property, Plant and Equipment [Line Items]	'	'
Property, Plant and Equipment, Gross	$1,474,118	$1,432,662
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	597,596	549,894
Property, Plant and Equipment, Net	876,522	882,768
Land [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property, Plant and Equipment, Gross	204,259	202,168
Premises and leasehold improvements [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property, Plant and Equipment, Gross	875,511	840,149
Furniture and Fixtures [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property, Plant and Equipment, Gross	$394,348	$390,345

Premises_and_Equipment_Operati

Premises and Equipment (Operating Leases) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Property, Plant and Equipment [Abstract]	'	'	'
Due 2014	$17,181,000	'	'
Due 2015	13,004,000	'	'
Due 2016	8,539,000	'	'
Due 2017	5,969,000	'	'
Due 2018	4,574,000	'	'
Due thereafter	41,554,000	'	'
Total minimum payments	90,821,000	'	'
Rent expense, net	21,400,000	23,600,000	24,700,000
Rent income	$1,800,000	$1,700,000	$1,700,000

Other_Real_Estate_Owned_Detail

Other Real Estate Owned (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Covered	'	'
Beginning balance	$102,577	$148,599
Additions	59,034	105,059
Sales	-96,744	-124,435
Writedowns	-17,786	-26,646
Ending balance	47,081	102,577
Noncovered	'	'
Beginning balance	43,513	50,399
Additions	33,908	35,586
Sales	-36,168	-33,564
Writedowns	-4,355	-8,908
Ending balance	36,898	43,513
Total	'	'
Beginning balance	146,090	198,998
Additions	92,942	140,645
Sales	-132,912	-157,999
Writedowns	-22,141	-35,554
Ending balance	$83,979	$146,090

FDIC_Indemnification_Asset_Cha

FDIC Indemnification Asset (Changes in Receivable from FDIC) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
FDIC Indemnification Asset [Roll Forward]	'	'	'
Beginning balance	$270,192	$617,377	$671,023
Additional receivable from acquisition	0	0	316,932
Accretion of discounts and premiums, net	-85,651	-102,394	-32,960
Receipt of payments from FDIC	-19,373	-251,972	-293,067
Post-acquisition and other adjustments, net	-71,771	7,181	-44,551
Ending balance	$93,397	$270,192	$617,377

Mortgage_Servicing_Rights_Deta

Mortgage Servicing Rights (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Mortgage Banking [Abstract]	'	'
Servicing Asset at Amortized Cost	$16,000	$1,784,000

Deposits_Details

Deposits (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Deposits, by Type [Abstract]	'	'
Demand	$5,241,817,000	$4,885,700,000
Checking With Interest	2,445,972,000	2,363,317,000
Money market accounts	6,306,942,000	6,357,309,000
Savings	1,004,097,000	905,456,000
Time	2,875,238,000	3,574,243,000
Total deposits	17,874,066,000	18,086,025,000
Time Deposits, $100,000 or More	1,270,000,000	1,610,000,000
Maturities of Time Deposits [Abstract]	'	'
2014	1,920,998,000	'
2015	532,711,000	'
2016	296,073,000	'
2017	87,179,000	'
2018	38,277,000	'
Thereafter	$0	'

ShortTerm_Borrowings_Details

Short-Term Borrowings (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Short-term Debt [Line Items]	'	'
Short-term borrowings	$511,418,000	$568,505,000
Master Notes [Member]	'	'
Short-term Debt [Line Items]	'	'
Short-term borrowings	411,907,000	399,047,000
Repurchase Agreements [Member]	'	'
Short-term Debt [Line Items]	'	'
Short-term borrowings	96,960,000	111,907,000
Federal Home Loan Bank Advances [Member]	'	'
Short-term Debt [Line Items]	'	'
Short-term borrowings	0	55,000,000
Federal Funds Purchased [Member]	'	'
Short-term Debt [Line Items]	'	'
Short-term borrowings	2,551,000	2,551,000
Unsecured Debt [Member]	'	'
Short-term Debt [Line Items]	'	'
Line of Credit Facility, Remaining Borrowing Capacity	665,000,000	'
Secured Debt [Member]	'	'
Short-term Debt [Line Items]	'	'
Line of Credit Facility, Remaining Borrowing Capacity	$1,140,000,000	'

LongTerm_Obligations_Details

Long-Term Obligations (Details) (USD $)

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

In Thousands, unless otherwise specified

Junior Subordinated Debt [Member]

Junior Subordinated Debt [Member]

Junior Subordinated Debt [Member]

Subordinated Debt [Member]

Subordinated Debt [Member]

Capital Lease Obligations [Member]

Capital Lease Obligations [Member]

Federal Home Loan Bank Advances [Member]

Federal Home Loan Bank Advances [Member]

Federal Home Loan Bank Advances [Member]

Federal Home Loan Bank Advances [Member]

Federal Home Loan Bank Advances [Member]

Federal Home Loan Bank Advances [Member]

Unamortized Acquisition Accounting Adjustments [Member]

Unamortized Acquisition Accounting Adjustments [Member]

Other Long Term Debt [Member]

Other Long Term Debt [Member]

Junior Subordinanted Debenture at 3 Month Libor Plus 1.75% Maturing June 30, 2036 [Member]

Junior Subordinanted Debenture at 3 Month Libor Plus 1.75% Maturing June 30, 2036 [Member]

Junior Subordinanted Debenture at 3 Month Libor Plus 1.75% Maturing June 30, 2036 [Member]

Subordinated Notes Payable at 5.125% Maturing June 1, 2015 [Member]

Subordinated Notes Payable at 5.125% Maturing June 1, 2015 [Member]

Rates Ranging from 2.00% to 3.88% and Maturing Through September 2018 [Member]

Rates Ranging from 2.00% to 3.88% and Maturing Through September 2018 [Member]

Rates Ranging from 2.00% to 3.88% and Maturing Through September 2018 [Member]

Rates Ranging from 2.00% to 3.88% and Maturing Through September 2018 [Member]

Rates Ranging from 4.74% and Maturity of July 2017 [Member]

Rates Ranging from 4.74% and Maturity of July 2017 [Member]

3-month LIBOR [Member]

Minimum

Maximum

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt interest rate

'

'

'

'

'

5.13%

'

'

'

'

'

2.00%

3.88%

4.74%

'

'

'

'

'

Description of variable rate basis

'

'

'

'

'3-month LIBOR

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Basis spread on variable rate

'

'

'

'

1.75%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Long-term Debt, Fiscal Year Maturity [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2014

$2,908

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2015

205,422

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2016

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2017

11,005

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2018

121,444

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Thereafter

169,990

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total long-term obligations

$510,769

$444,921

$96,392

$96,392

'

$125,000

$125,000

$6,515

$10,020

$240,283

$170,299

'

'

$10,000

$10,000

$2,449

$3,069

$30,130

$30,141

Estimated_Fair_Values_Estimate

Estimated Fair Values (Estimated Fair Values For Certain Financial Assets And Financial Liabilities) (Details) (USD $)	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011	Dec. 31, 2010
In Thousands, unless otherwise specified
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'		'	'
Cash and due from banks	$533,599		$639,730		'	'
Overnight investments	859,324		443,180		'	'
Investment securities available for sale	5,387,703		5,226,228		'	'
Investment securities held to maturity	907		1,342		'	'
Loans held for sale	47,271		86,333		'	'
FDIC Indemnification Asset	93,397		270,192		617,377	671,023
Income earned not collected	48,390		47,666		'	'
Stock issued by:	'		'		'	'
Deposits	17,874,066		18,086,025		'	'
Short-term borrowings	511,418		568,505		'	'
Long-term obligations	510,769		444,921		'	'
Payable to FDIC for loss share agreements	109,378		101,641		'	'
Carrying Value	'		'		'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'		'	'
Cash and due from banks	533,599		639,730		'	'
Overnight investments	859,324		443,180		'	'
Investment securities available for sale	5,387,703		5,226,228		'	'
Investment securities held to maturity	907		1,342		'	'
Loans held for sale	47,271		86,333		'	'
Loans covered by loss share agreements, net of allowance for loan and lease losses	975,906		1,669,263		'	'
Loans and leases not covered by loss share agreements, net of allowance for loan and lease losses	11,924,424		11,397,069		'	'
FDIC Indemnification Asset	93,397	[1]	270,192	[1]	'	'
Income earned not collected	48,390		47,666		'	'
Stock issued by:	'		'		'	'
Preferred stock	33,564		40,768		'	'
Deposits	17,874,066		18,086,025		'	'
Short-term borrowings	511,418		568,505		'	'
Long-term obligations	510,769		444,921		'	'
Payable to FDIC for loss share agreements	109,378		101,641		'	'
Accrued interest payable	6,737		9,353		'	'
Derivative Liability, Fair Value, Gross Liability	7,220		10,398		'	'
Carrying Value | Investment In Federal Home Loan Bank Of Atlanta Stock	'		'		'	'
Stock issued by:	'		'		'	'
Stock issued by Federal Home Loan Bank	30,813		36,139		'	'
Carrying Value | Investment In Federal Home Loan Bank Of San Francisco Stock	'		'		'	'
Stock issued by:	'		'		'	'
Stock issued by Federal Home Loan Bank	5,756		10,107		'	'
Carrying Value | Investment In Federal Home Loan Bank Of Seattle Stock	'		'		'	'
Stock issued by:	'		'		'	'
Stock issued by Federal Home Loan Bank	4,250		4,410		'	'
Fair Value	'		'		'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'		'	'
Cash and due from banks	533,599		639,730		'	'
Overnight investments	859,324		443,180		'	'
Investment securities available for sale	5,387,703		5,226,228		'	'
Investment securities held to maturity	974		1,448		'	'
Loans held for sale	47,956		87,654		'	'
Loans covered by loss share agreements, net of allowance for loan and lease losses	956,388		1,635,878		'	'
Loans and leases not covered by loss share agreements, net of allowance for loan and lease losses	11,589,149		11,238,597		'	'
FDIC Indemnification Asset	38,438	[1]	100,161	[1]	'	'
Income earned not collected	48,390		47,666		'	'
Stock issued by:	'		'		'	'
Preferred stock	34,786		40,793		'	'
Deposits	17,898,570		18,126,893		'	'
Short-term borrowings	511,418		568,505		'	'
Long-term obligations	526,037		472,642		'	'
Payable to FDIC for loss share agreements	111,941		111,679		'	'
Accrued interest payable	6,737		9,353		'	'
Derivative Liability, Fair Value, Gross Liability	7,220		10,398		'	'
Fair Value | Investment In Federal Home Loan Bank Of Atlanta Stock	'		'		'	'
Stock issued by:	'		'		'	'
Stock issued by Federal Home Loan Bank	30,813		36,139		'	'
Fair Value | Investment In Federal Home Loan Bank Of San Francisco Stock	'		'		'	'
Stock issued by:	'		'		'	'
Stock issued by Federal Home Loan Bank	5,756		10,107		'	'
Fair Value | Investment In Federal Home Loan Bank Of Seattle Stock	'		'		'	'
Stock issued by:	'		'		'	'
Stock issued by Federal Home Loan Bank	$4,250		$4,410		'	'
[1]	The fair value of the FDIC receivable excludes receivable related to accretable yield to be amortized in prospective periods.

Estimated_Fair_Values_Narrativ

Estimated Fair Values (Narrative) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Estimated Fair Values [Line Items]	'	'
Investment securities available for sale	$5,387,703	$5,226,228
Liability transfers between Level 1 and Level 2	0	0
Asset transfers between Level 1 and Level 2	0	0
Liability transfers between Level 2 and Level 1	0	0
Asset transfers between Level 2 and Level 1	0	0
Fair value of investment securities with nonobservable inputs	0	0
Fair Value, Measurements, Recurring	'	'
Estimated Fair Values [Line Items]	'	'
Liability measured at fair value on nonrecurring basis	0	0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3	'	'
Estimated Fair Values [Line Items]	'	'
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring | Fair Value	'	'
Estimated Fair Values [Line Items]	'	'
Investment securities available for sale	$5,387,703	$5,226,228
Minimum	'	'
Estimated Fair Values [Line Items]	'	'
Discounts for collateral value estimates due to estimated holding and selling costs (percent)	10.00%	'
Maximum	'	'
Estimated Fair Values [Line Items]	'	'
Discounts for collateral value estimates due to estimated holding and selling costs (percent)	14.00%	'

Estimated_Fair_Values_Assets_A

Estimated Fair Values (Assets And Liabilities Carried At Fair Value On A Recurring Basis) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Investment securities available for sale	$5,387,703	$5,226,228
Fair Value, Measurements, Recurring | Fair Value	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Investment securities available for sale	5,387,703	5,226,228
Interest rate swaps accounted for as cash flow hedges	7,220	10,398
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Investment securities available for sale	0	0
Interest rate swaps accounted for as cash flow hedges	0	0
Fair Value, Measurements, Recurring | Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Investment securities available for sale	5,387,703	5,226,228
Interest rate swaps accounted for as cash flow hedges	7,220	10,398
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Investment securities available for sale	0	0
Interest rate swaps accounted for as cash flow hedges	0	0
Fair Value, Measurements, Recurring | U.S. Treasury | Fair Value	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Investment securities available for sale	373,437	823,632
Fair Value, Measurements, Recurring | U.S. Treasury | Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring | U.S. Treasury | Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Investment securities available for sale	373,437	823,632
Fair Value, Measurements, Recurring | U.S. Treasury | Fair Value, Inputs, Level 3	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring | Government Agency | Fair Value	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Investment securities available for sale	2,544,229	3,055,204
Fair Value, Measurements, Recurring | Government Agency | Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring | Government Agency | Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Investment securities available for sale	2,544,229	3,055,204
Fair Value, Measurements, Recurring | Government Agency | Fair Value, Inputs, Level 3	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring | Mortgage Backed Securities, Other [Member] | Fair Value	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Investment securities available for sale	2,446,873	1,329,657
Fair Value, Measurements, Recurring | Mortgage Backed Securities, Other [Member] | Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring | Mortgage Backed Securities, Other [Member] | Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Investment securities available for sale	2,446,873	1,329,657
Fair Value, Measurements, Recurring | Mortgage Backed Securities, Other [Member] | Fair Value, Inputs, Level 3	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring | Other Debt Obligations | Fair Value	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Investment securities available for sale	830	820
Fair Value, Measurements, Recurring | Other Debt Obligations | Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring | Other Debt Obligations | Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Investment securities available for sale	830	820
Fair Value, Measurements, Recurring | Other Debt Obligations | Fair Value, Inputs, Level 3	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring | Equity Securities | Fair Value	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Investment securities available for sale	22,147	16,365
Fair Value, Measurements, Recurring | Equity Securities | Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring | Equity Securities | Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Investment securities available for sale	22,147	16,365
Fair Value, Measurements, Recurring | Equity Securities | Fair Value, Inputs, Level 3	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring | State, County, Municipal | Fair Value	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Investment securities available for sale	187	550
Fair Value, Measurements, Recurring | State, County, Municipal | Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring | State, County, Municipal | Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Investment securities available for sale	187	550
Fair Value, Measurements, Recurring | State, County, Municipal | Fair Value, Inputs, Level 3	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Investment securities available for sale	$0	$0

Estimated_Fair_Values_Assets_A1

Estimated Fair Values (Assets And Liabilities Carried At Fair Value On A Nonrecurring Basis) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Real Estate Acquired Through Foreclosure	$36,898	$43,513	$50,399
Covered under loss share agreements in other real estate owned	47,081	102,577	148,599
Fair Value, Measurements, Nonrecurring | Fair Value	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Loans held for sale	29,389	65,244	'
Impaired loans not covered by loss share agreements	73,517	51,644	'
Real Estate Acquired Through Foreclosure	20,526	21,113	'
Covered under loss share agreements in other real estate owned	37,587	59,545	'
Fair Value, Measurements, Nonrecurring | Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Loans held for sale	0	0	'
Impaired loans not covered by loss share agreements	0	0	'
Real Estate Acquired Through Foreclosure	0	0	'
Covered under loss share agreements in other real estate owned	0	0	'
Fair Value, Measurements, Nonrecurring | Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Loans held for sale	29,389	65,244	'
Impaired loans not covered by loss share agreements	0	0	'
Real Estate Acquired Through Foreclosure	0	0	'
Covered under loss share agreements in other real estate owned	0	0	'
Fair Value, Measurements, Nonrecurring | Fair Value, Inputs, Level 3	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Loans held for sale	0	0	'
Impaired loans not covered by loss share agreements	73,517	51,644	'
Real Estate Acquired Through Foreclosure	20,526	21,113	'
Covered under loss share agreements in other real estate owned	$37,587	$61,026	'

Employee_Benefit_Plans_Narrati

Employee Benefit Plans (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Defined Contribution Plan, Cost Recognized	$14,900,000	$14,100,000	$13,600,000
Return On Plan Assets Over Last 15 Years	6.99%	'	'
Employer contributions	$0	$0	'
Assumed discount rate (percent)	4.00%	4.75%	5.50%
Assumed rate of salary increases	4.00%	4.00%	4.50%
Expected long-term rate of return on plan assets (percent)	7.25%	7.50%	7.75%
Return On Plan Assets Over Last 10 Years	8.39%	'	'
Return Plan Assets Over Last 5 Years	13.37%	'	'
Percent Of Employee Contribution Match To 401 K	75.00%	'	'

Employee_Benefit_Plans_Funded_

Employee Benefit Plans (Funded Status Of Plans) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]	'	'
Benefit obligation at January 1	$580,938	$493,648
Service cost	'	14,241
Interest cost	'	23,711
Actuarial (gain) loss	-74,060	64,540
Benefits paid	-16,218	-15,202
Benefit obligation at December 31	530,678	580,938
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'
Fair value of plan assets, beginning balance	463,005	429,505
Actual return on plan assets	77,230	48,702
Employer contributions	0	0
Benefits paid	-16,218	-15,202
Fair value of plan assets, ending balance	524,017	463,005
Funded status	($6,661)	($117,933)

Employee_Benefit_Plans_Amounts

Employee Benefit Plans (Amounts Recognized in the Financial Statements) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Amounts recognized in the consolidated balance sheets	'	'
Other assets	$0	$0
Other liabilities	-6,661	-117,933
Net asset (liability) recognized	-6,661	-117,933
Amount recognized in accumulated other comprehensive income	'	'
Net loss (gain)	16,605	157,147
Less prior service cost	977	1,187
Accumulated other comprehensive loss, excluding income taxes	17,582	158,334
Actuarial loss	6,184	'
Prior service cost	210	'
Total	$6,394	'

Employee_Benefit_Plans_Net_Ben

Employee Benefit Plans (Net Benefit Cost) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	'	'	'
Service cost	'	$14,241	'
Interest cost	'	23,711	'
Total change in pension obligation, net of tax	17,195	11,236	7,071
Defined Benefit Pension	'	'	'
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	'	'	'
Service cost	16,332	14,241	13,265
Interest cost	23,686	23,711	23,810
Expected return on assets	-27,733	-28,478	-29,184
Amortization of prior service cost	-210	-210	-210
Amortization of net actuarial loss	16,985	11,026	6,861
Total pension expense	29,480	20,710	14,962
Current year actuarial gain (loss)	123,557	-44,315	-58,630
Total change in pension obligation, net of tax	-140,752	33,079	51,559
Total recognized in net periodic benefit cost and other comprehensive income	($111,272)	$53,789	$66,521

Employee_Benefit_Plans_Assumpt

Employee Benefit Plans (Assumptions Used) (Details)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Assumptions used to determine the benefit obligations	'	'	'
Rate of compensation increase	4.00%	4.00%	'
Assumptions used to determine net periodic benefit cost	'	'	'
Discount rate	4.00%	4.75%	5.50%
Rate of compensation increase	4.00%	4.00%	4.50%
Expected long-term rate of return on plan assets (percent)	7.25%	7.50%	7.75%

Employee_Benefit_Plans_Fair_Va

Employee Benefit Plans (Fair Value and Allocation Of Plan Assets) (Details) (USD $)

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

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

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

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

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

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

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

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

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

In Thousands, unless otherwise specified

Fair Value

Fair Value

Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)

Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)

Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)

Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)

Fair Value, Inputs, Level 3

Fair Value, Inputs, Level 3

Cash and Cash Equivalents

Cash and Cash Equivalents

Cash and Cash Equivalents

Cash and Cash Equivalents

Cash and Cash Equivalents

Cash and Cash Equivalents

Cash and Cash Equivalents

Cash and Cash Equivalents

Cash and Cash Equivalents

Cash and Cash Equivalents

Cash and Cash Equivalents

Cash and Cash Equivalents

Cash and Cash Equivalents

Cash and Cash Equivalents

Equity Securities

Equity Securities

Equity Securities

Equity Securities

Equity Securities

Equity Securities

Equity Securities

Equity Securities

Equity Securities

Equity Securities

Equity Securities

Equity Securities

Equity Securities

Equity Securities

Equity Securities

Equity Securities

Equity Securities

Equity Securities

Equity Securities

Equity Securities

Equity Securities

Equity Securities

Equity Securities

Equity Securities

Equity Securities

Equity Securities

Equity Securities

Equity Securities

Equity Securities

Equity Securities

Equity Securities

Equity Securities

Equity Securities

Equity Securities

Equity Securities

Equity Securities

Equity Securities

Equity Securities

Equity Securities

Equity Securities

Equity Securities

Equity Securities

Equity Securities

Equity Securities

Equity Securities

Equity Securities

Fixed Income Investments

Fixed Income Investments

Fixed Income Investments

Fixed Income Investments

Fixed Income Investments

Fixed Income Investments

Fixed Income Investments

Fixed Income Investments

Fixed Income Investments

Fixed Income Investments

Fixed Income Investments

Fixed Income Investments

Fixed Income Investments

Fixed Income Investments

Fixed Income Investments

Fixed Income Investments

Fixed Income Investments

Fixed Income Investments

Fixed Income Investments

Fixed Income Investments

Fixed Income Investments

Fixed Income Investments

Fixed Income Investments

Fixed Income Investments

Fixed Income Investments

Fixed Income Investments

Fixed Income Investments

Fixed Income Investments

Fixed Income Investments

Fixed Income Investments

Fixed Income Investments

Fixed Income Investments

Fixed Income Investments

Fixed Income Investments

Fixed Income Investments

Fixed Income Investments

Fixed Income Investments

Fixed Income Investments

Fixed Income Investments

Fixed Income Investments

Fixed Income Investments

Fixed Income Investments

Fixed Income Investments

Fixed Income Investments

Fixed Income Investments

Fixed Income Investments

Alternative investments

Alternative investments

Alternative investments

Alternative investments

Alternative investments

Alternative investments

Alternative investments

Alternative investments

Alternative investments

Alternative investments

Alternative investments

Alternative investments

Alternative investments

Alternative investments

Alternative investments

Alternative investments

Alternative investments

Alternative investments

Alternative investments

Alternative investments

Alternative investments

Alternative investments

Minimum

Minimum

Maximum

Maximum

Fair Value

Fair Value

Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)

Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)

Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)

Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)

Fair Value, Inputs, Level 3

Fair Value, Inputs, Level 3

Minimum

Minimum

Maximum

Maximum

Large capitalization

Large capitalization

Large capitalization

Large capitalization

Large capitalization

Large capitalization

Large capitalization

Large capitalization

Middle capitalization

Middle capitalization

Middle capitalization

Middle capitalization

Middle capitalization

Middle capitalization

Middle capitalization

Middle capitalization

Small capitalization

Small capitalization

Small capitalization

Small capitalization

Small capitalization

Small capitalization

Small capitalization

Small capitalization

International equity (developed)

International equity (developed)

International equity (developed)

International equity (developed)

International equity (developed)

International equity (developed)

International equity (developed)

International equity (developed)

International equity (emerging)

International equity (emerging)

International equity (emerging)

International equity (emerging)

International equity (emerging)

International equity (emerging)

International equity (emerging)

International equity (emerging)

Minimum

Minimum

Maximum

Maximum

Investment grade bonds

Investment grade bonds

Investment grade bonds

Investment grade bonds

Investment grade bonds

Investment grade bonds

Investment grade bonds

Investment grade bonds

Intermediate bonds

Intermediate bonds

Intermediate bonds

Intermediate bonds

Intermediate bonds

Intermediate bonds

Intermediate bonds

Intermediate bonds

High-yield corporate bonds

High-yield corporate bonds

High-yield corporate bonds

High-yield corporate bonds

High-yield corporate bonds

High-yield corporate bonds

High-yield corporate bonds

High-yield corporate bonds

U. S. Treasury

U. S. Treasury

U. S. Treasury

U. S. Treasury

U. S. Treasury

U. S. Treasury

U. S. Treasury

U. S. Treasury

International emerging bond

International emerging bond

International emerging bond

International emerging bond

International emerging bond

International emerging bond

International emerging bond

International emerging bond

Minimum

Minimum

Maximum

Maximum

Commodities Investment

Commodities Investment

Commodities Investment

Commodities Investment

Commodities Investment

Commodities Investment

Commodities Investment

Commodities Investment

Hedge Funds

Hedge Funds

Hedge Funds

Hedge Funds

Hedge Funds

Hedge Funds

Hedge Funds

Hedge Funds

Fair Value

Fair Value

Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)

Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)

Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)

Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)

Fair Value, Inputs, Level 3

Fair Value, Inputs, Level 3

Fair Value

Fair Value

Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)

Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)

Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)

Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)

Fair Value, Inputs, Level 3

Fair Value, Inputs, Level 3

Fair Value

Fair Value

Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)

Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)

Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)

Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)

Fair Value, Inputs, Level 3

Fair Value, Inputs, Level 3

Fair Value

Fair Value

Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)

Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)

Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)

Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)

Fair Value, Inputs, Level 3

Fair Value, Inputs, Level 3

Fair Value

Fair Value

Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)

Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)

Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)

Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)

Fair Value, Inputs, Level 3

Fair Value, Inputs, Level 3

Fair Value

Fair Value

Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)

Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)

Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)

Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)

Fair Value, Inputs, Level 3

Fair Value, Inputs, Level 3

Fair Value

Fair Value

Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)

Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)

Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)

Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)

Fair Value, Inputs, Level 3

Fair Value, Inputs, Level 3

Fair Value

Fair Value

Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)

Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)

Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)

Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)

Fair Value, Inputs, Level 3

Fair Value, Inputs, Level 3

Fair Value

Fair Value

Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)

Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)

Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)

Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)

Fair Value, Inputs, Level 3

Fair Value, Inputs, Level 3

Fair Value

Fair Value

Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)

Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)

Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)

Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)

Fair Value, Inputs, Level 3

Fair Value, Inputs, Level 3

Fair Value

Fair Value

Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)

Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)

Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)

Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)

Fair Value, Inputs, Level 3

Fair Value, Inputs, Level 3

Fair Value

Fair Value

Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)

Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)

Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)

Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)

Fair Value, Inputs, Level 3

Fair Value, Inputs, Level 3

Defined Benefit Plan Disclosure [Line Items]

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Plan assets

$524,017

$463,005

$429,505

$524,017

$463,005

$380,540

$304,132

$143,477

$158,873

$0

$0

'

'

'

'

'

'

$2,517

$3,088

$2,517

$3,088

$0

$0

$0

$0

'

'

'

'

'

'

$218,023

$172,512

$218,023

$172,512

$0

$0

$0

$0

$10,724

$21,451

$10,724

$21,451

$0

$0

$0

$0

$43,928

$31,053

$43,928

$31,053

$0

$0

$0

$0

$10,535

$9,537

$10,535

$9,537

$0

$0

$0

$0

$40,643

$24,276

$40,643

$24,276

$0

$0

$0

$0

'

'

'

'

'

'

$74,501

$71,986

$0

$0

$74,501

$71,986

$0

$0

$48,746

$59,052

$0

$0

$48,746

$59,052

$0

$0

$10,111

$18,487

$0

$0

$10,111

$18,487

$0

$0

$4,395

$7,613

$4,395

$7,613

$0

$0

$0

$0

$10,119

$9,348

$0

$0

$10,119

$9,348

$0

$0

'

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'

'

$19,014

$17,376

$19,014

$17,376

$0

$0

$0

$0

$30,761

$17,226

$30,761

$17,226

'

'

$0

$0

Cash and equivalents Target Allocation

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0.00%

0.00%

1.00%

1.00%

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55.00%

55.00%

65.00%

65.00%

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25.00%

36.00%

40.00%

44.00%

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0.00%

0.00%

10.00%

8.00%

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Cash and equivalents Actual % of Plan Assets

100.00%

100.00%

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1.00%

1.00%

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62.00%

56.00%

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28.00%

36.00%

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10.00%

8.00%

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'

Employee_Benefit_Plans_Project

Employee Benefit Plans (Projected Benefit Payments) (Details) (USD $)	3 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
General Discussion of Pension and Other Postretirement Benefits [Abstract]	'	'
Defined Benefit Plan, Accumulated Benefit Obligation	$448,716,000	$485,641,000
Defined Benefit Plan, Estimated Future Employer Contributions in Next Fiscal Year	0	'
2014	18,070,000	'
2015	19,662,000	'
2016	21,484,000	'
2017	23,244,000	'
2018	24,937,000	'
2019-2023	$150,638,000	'

Employee_Benefit_Plans_Present

Employee Benefit Plans (Present Value of Accrued Liability) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Present Value Of Accrued Liabilitiy [Roll Forward]	'	'
Benefits paid	($16,218)	($15,202)
Interest cost	'	23,711
Executives Directors And Officer Of Acquired Entities [Member]	'	'
Present Value Of Accrued Liabilitiy [Roll Forward]	'	'
Present value of accrued liability as of January 1	25,851	25,586
Benefit expense	959	462
Benefits paid	-3,042	-3,241
Benefits forfeited	0	554
Interest cost	192	2,490
Present value of accrued liability as of December 31	$23,960	$25,851
Discount rate	4.90%	4.00%

Other_Noninterest_Income_and_O2

Other Noninterest Income and Other Noninterest Expense (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Other Operating Cost and Expense [Line Items]	'	'	'
Other Noninterest Expense	$193,388,000	$179,811,000	$204,936,000
Acquired Loans	'	'	'
Other Operating Cost and Expense [Line Items]	'	'	'
Proceeds from Recoveries of Loans Previously Charged off	29,700,000	10,500,000	13,500,000
Telecommunication	'	'	'
Other Operating Cost and Expense [Line Items]	'	'	'
Other Noninterest Expense	10,033,000	11,131,000	12,131,000
Cardholder Reward Programs	'	'	'
Other Operating Cost and Expense [Line Items]	'	'	'
Other Noninterest Expense	10,154,000	4,325,000	11,780,000
Processing Fees Paid To Third Parties	'	'	'
Other Operating Cost and Expense [Line Items]	'	'	'
Other Noninterest Expense	15,095,000	14,454,000	16,336,000
Cardholder Processing	'	'	'
Other Operating Cost and Expense [Line Items]	'	'	'
Other Noninterest Expense	9,892,000	11,816,000	11,418,000
Merchant Processing	'	'	'
Other Operating Cost and Expense [Line Items]	'	'	'
Other Noninterest Expense	35,279,000	33,313,000	37,196,000
Collection	'	'	'
Other Operating Cost and Expense [Line Items]	'	'	'
Other Noninterest Expense	21,209,000	25,591,000	23,237,000
Consultant	'	'	'
Other Operating Cost and Expense [Line Items]	'	'	'
Other Noninterest Expense	9,740,000	3,915,000	3,021,000
Advertising	'	'	'
Other Operating Cost and Expense [Line Items]	'	'	'
Other Noninterest Expense	8,286,000	3,897,000	7,957,000
Other Expense	'	'	'
Other Operating Cost and Expense [Line Items]	'	'	'
Other Noninterest Expense	$73,700,000	$71,369,000	$81,860,000

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 tax expense	'	'	'
Federal	$41,996	$85,875	$108,639
State	7,080	9,212	23,101
Total current tax expense	49,076	95,087	131,740
Deferred Income Tax Expense (Benefit)	'	'	'
Federal	38,974	-27,344	-12,127
State	8,915	-7,921	-4,510
Total deferred tax expense (benefit)	47,889	-35,265	-16,637
Total income tax expense	96,965	59,822	115,103
Effective Income Tax Rate Reconciliation, Amount [Abstract]	'	'	'
Federal statutory rate	35.00%	'	'
Income taxes at statutory rates	92,633	67,959	108,546
Increase (reduction) in income taxes resulting from: [Abstract]	'	'	'
Nontaxable income on loans, leases and investments, net of nondeductible expenses	-1,185	-1,309	-1,481
State and local income taxes, including change in valuation allowance, net of federal income tax benefit	10,397	839	12,084
Tax credits	-5,569	-7,279	-5,166
Other, net	689	-388	1,120
Total income tax expense	96,965	59,822	115,103
Income tax expense reduction, resulting from favorable outcome of state tax audits	'	6,449	'
Deferred Tax Assets, Net [Abstract]	'	'	'
Allowance for loan and lease losses	90,790	124,928	'
Pension liability	2,593	46,178	'
Executive separation from service agreements	9,940	10,123	'
State operating loss carryforwards	79	652	'
Unrealized loss on cash flow hedge	2,786	4,106	'
Net unrealized loss on securities included in accumulated other comprehensive loss	6,541	0	'
Other	17,884	19,465	'
Gross deferred tax asset	130,613	205,452	'
Accelerated depreciation	6,226	12,465	'
Lease financing activities	10,216	10,366	'
Net unrealized gains on securities included in accumulated other comprehensive loss	0	13,292	'
Net deferred loan fees and costs	4,115	3,714	'
Intangible assets	11,929	11,897	'
Gain on FDIC-assisted transactions, deferred for tax purposes	57,895	29,694	'
Other	6,352	5,373	'
Deferred tax liability	96,733	86,801	'
Net deferred tax assets	$33,880	$118,651	'

Transactions_with_Related_Pers2

Transactions with Related Persons (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Loans and Leases Receivable, Related Parties [Roll Forward]	'	'	'
Beginning balance	$1,311,000	'	'
New loans	605,000	'	'
Repayments	-91,000	'	'
Ending balance	1,825,000	1,311,000	'
Unfunded Loan Commitments Available To Related Parties	5,500,000	4,400,000	'
Revenue from Related Parties	21,600,000	33,700,000	34,500,000
Revenue From Largest Individual Institution Related Parties	20,400,000	22,800,000	23,500,000
Investment Securities Available For Sale Related Parties	21,600,000	16,100,000	'
Investment Cost Related Parties	$452,000	$452,000	'

Derivatives_Narrative_Details

Derivatives (Narrative) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Derivative [Line Items]	'	'	'
Fair value of collateral pledged to secure interest rate contracts	$7,004	$9,656	'
Incremental interest expense paid to interest rate swap counterparties	3,281	3,095	4,577
Interest Rate Swap	'	'	'
Derivative [Line Items]	'	'	'
Gain (loss) expected to be reclassified in next 12 months	-1,920	'	'
2011 Interest Rate Swap	'	'	'
Derivative [Line Items]	'	'	'
Notional amount of interest rate derivatives	$93,500	'	'
Fixed rate payments, interest rate	5.50%	'	'
Variable rate payment rate	1.75%	'	'
2006 Interest Rate Swap	'	'	'
Derivative [Line Items]	'	'	'
Variable rate payment rate	1.75%	'	'
2009 Interest Rate Swap	'	'	'
Derivative [Line Items]	'	'	'
Variable rate payment rate	1.75%	'	'

Derivatives_Schedule_Of_Intere

Derivatives (Schedule Of Interest Rate Swaps) (Details) (2011 Interest Rate Swap, USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
2011 Interest Rate Swap	'	'
Derivative [Line Items]	'	'
Estimated fair value of liability	$7,220	$10,398
Derivative, Notional Amount	$93,500	$93,500

Goodwill_and_Intangible_Assets2

Goodwill and Intangible Assets (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Goodwill and Intangible Assets Disclosure [Abstract]	'	'
Goodwill	$102,625	$102,625
Useful life	'4 years	'
Finite-lived Intangible Assets [Roll Forward]	'	'
Beginning balance	3,556	7,032
Amortization	-2,309	-3,476
Ending balance	1,247	3,556
Finite-Lived Intangible Assets [Abstract]	'	'
Gross balance	18,966	18,966
Accumulated amortization	-17,719	-15,410
Carrying value	1,247	3,556
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]	'	'
2014	1,122	'
2015	125	'
Carrying value	$1,247	$3,556

Shareholders_Equity_Dividends_2

Shareholders' Equity, Dividends Restrictions and Other Regulatory Matters (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]	'	'	'
Tier 1 Risk Based Capital to Risk Weighted Assets	14.26%	'	'
Tier 1 Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets	4.00%	'	'
Capital Required for Capital Adequacy to Risk Weighted Assets	8.00%	'	'
Leverage Capital Required Ratio To Tangible Assets	3.00%	'	'
Trust Preferred Securities	$93,500,000	'	'
Percent Of Trust Preferred Securities Excluded From Tier One Starting In 2013	75.00%	'	'
Proforma Tier 1 Leverage Ratio	9.38%	'	'
Proforma Tier 1 Risk Based Ratio	14.26%	'	'
Proforma Total Risk Based Ratio	15.76%	'	'
Tier 2 capital	25,000,000	50,000,000	'
Stock Repurchased During Period, Shares	0	'	'
Amount Available for Dividend Distribution without Prior Approval from Regulatory Agency	1,410,000,000	'	'
Maximum Undivided Profits Elgible For Dividend Payment Without Changing Well Capitalized Status	781,300,000	'	'
Average Required Maintence Of Non Interst Bearing Reserve Balance	313,400,000	'	'
Common Class A [Member]	'	'	'
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]	'	'	'
Votes per share of common stock	1	'	'
Stock Repurchase Program, Number of Shares Authorized to be Repurchased	100,000	100,000	'
Stock Repurchased During Period, Shares	'	56,276	'
Class B Common Stock	'	'	'
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]	'	'	'
Votes per share of common stock	16	'	'
Stock Repurchase Program, Number of Shares Authorized to be Repurchased	25,000	25,000	'
Stock Repurchased During Period, Shares	0	100	'
Stock Repurchased and Retired During Period, Shares	'	606,829	'
Class B Common Stock | Majority Shareholder [Member]	'	'	'
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]	'	'	'
Stock Repurchased and Retired During Period, Shares	'	593,954	'
BancShares [Member]	'	'	'
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]	'	'	'
Tier 1 Capital for Capital Adequacy	2,109,139,000	1,949,985,000	'
Capital Required for Capital Adequacy	2,320,792,000	2,179,370,000	'
Leverage Capital Required for Capital Adequacy	2,109,139,000	1,949,985,000	'
Tier 1 Risk Based Capital to Risk Weighted Assets	14.92%	14.27%	'
Capital to Risk Weighted Assets	16.42%	15.95%	'
Leverage Capital to Average Assets	9.82%	9.23%	'
Tier 1 Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets	6.00%	6.00%	'
Capital Required to be Well Capitalized	10.00%	10.00%	'
Leverage Capital Required to be Well Capitalized to Average Assets	5.00%	5.00%	'
FCB [Member]	'	'	'
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]	'	'	'
Tier 1 Capital for Capital Adequacy	1,983,349,000	1,942,101,000	'
Capital Required for Capital Adequacy	2,184,461,000	2,163,034,000	'
Leverage Capital Required for Capital Adequacy	1,983,349,000	1,942,101,000	'
Tier 1 Risk Based Capital to Risk Weighted Assets	14.14%	14.37%	'
Capital to Risk Weighted Assets	15.57%	16.00%	'
Leverage Capital to Average Assets	9.36%	9.34%	'
Tier 1 Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets	6.00%	6.00%	'
Capital Required to be Well Capitalized	10.00%	10.00%	'
Leverage Capital Required to be Well Capitalized to Average Assets	5.00%	5.00%	'
Parent [Member]	'	'	'
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]	'	'	'
Dividends from subsidiaries	$131,006,000	$179,588,000	$82,812,000

Commitments_and_Contingencies_

Commitments and Contingencies (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Guarantor Obligations [Line Items]	'	'
Payable to FDIC for loss share agreements	$109,378,000	$101,641,000
Commitments to Extend Credit	'	'
Guarantor Obligations [Line Items]	'	'
Unused commitments	5,840,000,000	5,470,000,000
Standby Letters of Credit	'	'
Guarantor Obligations [Line Items]	'	'
Guarantor obligations amount	54,811,000	63,085,000
Recourse Obligation on Mortgage Loans Sold	'	'
Guarantor Obligations [Line Items]	'	'
Guarantor obligations amount	156,079,000	205,888,000
Recourse Period, Maximum1	'120 days	'
Obligation to Repurchase Receivables Sold	'	'
Guarantor Obligations [Line Items]	'	'
Reserve for estimated losses arising from repurchase of loans	$3,641,000	$4,065,000

Accumulated_Other_Comprehensiv2

Accumulated Other Comprehensive Loss (Schedule Of Accumulated Other Comprehensive Income) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Accumulated Other Comprehensive Income (Loss), before Tax	($41,434)		($134,923)		'
Long-term obligations	740,186		914,688		870,967
Deferred tax expense (benefit)	-16,166		-52,817		'
Accumulated other comprehensive income (loss), net of tax	-25,268		-82,106		-66,574
Income taxes	-96,965		-59,822		-115,103
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	-12,424	[1]	-7,304	[1]	'
Securities gains (losses)	0		2,277		-288
Unrealized Gains on Investment Securities Available for Sale	'		'		'
Accumulated Other Comprehensive Income (Loss), before Tax	-16,632		33,809		'
Deferred tax expense (benefit)	-6,541		13,292		'
Accumulated other comprehensive income (loss), net of tax	-10,091	[2]	20,517	[2]	16,115	[2]
Income taxes	0	[1]	-917	[1]	'
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0	[1],[2]	1,405	[1],[2]	'
Securities gains (losses)	0	[1]	2,322	[1]	'
Funded Status of Defined Benefit Plan	'		'		'
Accumulated Other Comprehensive Income (Loss), before Tax	-17,582		-158,334		'
Deferred tax expense (benefit)	-6,839		-62,003		'
Accumulated other comprehensive income (loss), net of tax	-10,743	[2]	-96,331	[2]	-76,206	[2]
Income taxes	6,689	[1]	4,400	[1]	'
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	-10,506	[1],[2]	-6,836	[1],[2]	'
Employee Benefits, prior service costs	-210	[1]	-210	[1]	'
Reclassification adjustment for losses included in income before income taxes	-16,985	[1]	-11,026	[1]	'
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, before Tax	-17,195		-11,236	[1]	'
Unrealized Loss on Cash Flow Hedges	'		'		'
Accumulated Other Comprehensive Income (Loss), before Tax	-7,220		-10,398		'
Long-term obligations	-3,281	[1]	-3,095	[1]	'
Deferred tax expense (benefit)	-2,786		-4,106		'
Accumulated other comprehensive income (loss), net of tax	-4,434	[2]	-6,292	[2]	-6,483	[2]
Income taxes	1,363	[1]	1,222	[1]	'
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	($1,918)	[1],[2]	($1,873)	[1],[2]	'
[1]	1 Amounts in parentheses indicate debits to profit/loss.
[2]	All amounts are net of tax. Amounts in parentheses indicate debits.

Accumulated_Other_Comprehensiv3

Accumulated Other Comprehensive Loss (Components of AOCI) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Accumulated Other Comprehensive Income (Loss) [Line Items]	'		'		'
Beginning balance	($82,106)		($66,574)		'
Other comprehensive income (loss) before reclassifications	44,414		-22,836		'
Amounts reclassified from accumulated other comprehensive loss	12,424	[1]	7,304	[1]	'
Net current period other comprehensive income (loss)	56,838		-15,532		-30,045
Ending balance	-25,268		-82,106		-66,574
Unrealized Loss on Cash Flow Hedges	'		'		'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'		'		'
Beginning balance	-6,292	[2]	-6,483	[2]	'
Other comprehensive income (loss) before reclassifications	-60	[2]	-1,682	[2]	'
Amounts reclassified from accumulated other comprehensive loss	1,918	[1],[2]	1,873	[1],[2]	'
Net current period other comprehensive income (loss)	1,858	[2]	191	[2]	'
Ending balance	-4,434	[2]	-6,292	[2]	'
Unrealized Gains on Investment Securities Available for Sale	'		'		'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'		'		'
Beginning balance	20,517	[2]	16,115	[2]	'
Other comprehensive income (loss) before reclassifications	-30,608	[2]	5,807	[2]	'
Amounts reclassified from accumulated other comprehensive loss	0	[1],[2]	-1,405	[1],[2]	'
Net current period other comprehensive income (loss)	-30,608	[2]	4,402	[2]	'
Ending balance	-10,091	[2]	20,517	[2]	'
Defined Benefit Pension Items	'		'		'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'		'		'
Beginning balance	-96,331	[2]	-76,206	[2]	'
Other comprehensive income (loss) before reclassifications	75,082	[2]	-26,961	[2]	'
Amounts reclassified from accumulated other comprehensive loss	10,506	[1],[2]	6,836	[1],[2]	'
Net current period other comprehensive income (loss)	85,588	[2]	-20,125	[2]	'
Ending balance	($10,743)	[2]	($96,331)	[2]	'
[1]	1 Amounts in parentheses indicate debits to profit/loss.
[2]	All amounts are net of tax. Amounts in parentheses indicate debits.

Accumulated_Other_Comprehensiv4

Accumulated Other Comprehensive Loss (Reclassifications out of AOCI) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'		'		'
Long-term obligations	$740,186		$914,688		$870,967
Securities gains (losses)	0		2,277		-288
Income taxes	-96,965		-59,822		-115,103
Amounts reclassified from accumulated other comprehensive income, net of tax	12,424	[1]	7,304	[1]	'
Unrealized Loss on Cash Flow Hedges	'		'		'
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'		'		'
Long-term obligations	-3,281	[1]	-3,095	[1]	'
Income taxes	1,363	[1]	1,222	[1]	'
Amounts reclassified from accumulated other comprehensive income, net of tax	1,918	[1],[2]	1,873	[1],[2]	'
Unrealized Gains on Investment Securities Available for Sale	'		'		'
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'		'		'
Securities gains (losses)	0	[1]	2,322	[1]	'
Income taxes	0	[1]	-917	[1]	'
Amounts reclassified from accumulated other comprehensive income, net of tax	0	[1],[2]	-1,405	[1],[2]	'
Defined Benefit Pension Items	'		'		'
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'		'		'
Employee Benefits, prior service costs	-210	[1]	-210	[1]	'
Reclassification adjustment for losses included in income before income taxes	-16,985	[1]	-11,026	[1]	'
Total before taxes	-17,195		-11,236	[1]	'
Income taxes	6,689	[1]	4,400	[1]	'
Amounts reclassified from accumulated other comprehensive income, net of tax	$10,506	[1],[2]	$6,836	[1],[2]	'
[1]	1 Amounts in parentheses indicate debits to profit/loss.
[2]	All amounts are net of tax. Amounts in parentheses indicate debits.

Subsequent_Events_Details

Subsequent Events (Details) (Subsequent Event, 1st Financial, USD $)	0 Months Ended
	Jan. 02, 2014
Subsequent Event [Line Items]	'
Consideration transferred	$10,000,000
Cash and cash equivalents	28,194,000
Investment securities available for sale	237,438,000
Loans held for sale	1,183,000
Restricted equity securities	3,776,000
Loans	316,327,000
Less: allowance for loan losses	0
Premises and equipment	2,686,000
Other real estate owned	11,591,000
Other assets	16,346,000
Intangible asset	3,780,000
Total assets acquired	621,321,000
Noninterest-bearing	152,444,000
Interest-bearing	479,427,000
Total deposits	631,871,000
Federal Funds purchased	406,000
Other liabilities	3,559,000
Total liabilities assumed	635,836,000
Net assets acquired	-14,515,000
Cash paid to shareholders	-2,000,000
Cash paid to acquire TARP securities	-8,000,000
Goodwill recorded for 1st Financial	-24,515,000
Minimum	'
Subsequent Event [Line Items]	'
Estimated merger costs	6,000,000
Maximum	'
Subsequent Event [Line Items]	'
Estimated merger costs	7,000,000
As recorded by 1st Financial	'
Subsequent Event [Line Items]	'
Cash and cash equivalents	28,194,000
Investment securities available for sale	246,890,000
Loans held for sale	1,183,000
Restricted equity securities	3,105,000
Loans	338,170,000
Less: allowance for loan losses	-7,796,000
Premises and equipment	3,871,000
Other real estate owned	12,896,000
Other assets	16,811,000
Intangible asset	0
Total assets acquired	643,324,000
Noninterest-bearing	152,444,000
Interest-bearing	477,881,000
Total deposits	630,325,000
Federal Funds purchased	406,000
Other liabilities	3,392,000
Total liabilities assumed	634,123,000
Net assets acquired	9,201,000
Fair value adjustments	'
Subsequent Event [Line Items]	'
Cash and cash equivalents	0
Investment securities available for sale	-9,452,000
Loans held for sale	0
Restricted equity securities	671,000
Loans	-21,843,000
Less: allowance for loan losses	7,796,000
Premises and equipment	-1,185,000
Other real estate owned	-1,305,000
Other assets	-465,000
Intangible asset	3,780,000
Total assets acquired	-22,003,000
Noninterest-bearing	0
Interest-bearing	1,546,000
Total deposits	1,546,000
Federal Funds purchased	0
Other liabilities	167,000
Total liabilities assumed	1,713,000
Net assets acquired	($23,716,000)

Subsequent_Events_Loans_Acquir

Subsequent Events (Loans Acquired) (Details) (Subsequent Event, 1st Financial, USD $)	Jan. 02, 2014
In Thousands, unless otherwise specified
Subsequent Event [Line Items]	'
Contractually required payments	$413,937
Cash flows expected to be collected	400,326
Loans	316,327
Commercial	'
Subsequent Event [Line Items]	'
Loans	201,265
Commercial | Construction and land development	'
Subsequent Event [Line Items]	'
Loans	41,516
Commercial | Mortgage	'
Subsequent Event [Line Items]	'
Loans	123,925
Commercial | Other commercial real estate	'
Subsequent Event [Line Items]	'
Loans	6,698
Commercial | Commercial and industrial	'
Subsequent Event [Line Items]	'
Loans	29,126
Noncommerical	'
Subsequent Event [Line Items]	'
Loans	115,062
Noncommerical | Mortgage	'
Subsequent Event [Line Items]	'
Loans	113,177
Noncommerical | Consumer	'
Subsequent Event [Line Items]	'
Loans	$1,885

Parent_Company_Financial_State2

Parent Company Financial Statements (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Assets	'	'	'	'
Investment securities	$5,387,703,000	$5,226,228,000	'	'
Other assets	263,797,000	367,610,000	'	'
Total assets	21,199,091,000	21,283,652,000	'	'
Liabilities and Shareholders' Equity	'	'	'	'
Short-term borrowings	511,418,000	568,505,000	'	'
Long-term obligations	510,769,000	444,921,000	'	'
Other liabilities	116,785,000	218,553,000	'	'
Stockholders' equity	2,076,675,000	1,864,007,000	1,861,128,000	1,732,962,000
Total liabilities and shareholders' equity	21,199,091,000	21,283,652,000	'	'
Income Statement [Abstract]	'	'	'	'
Interest expense	56,618,000	90,148,000	144,192,000	'
Net interest income (loss)	740,186,000	914,688,000	870,967,000	'
Income tax benefit	96,965,000	59,822,000	115,103,000	'
Net income	167,699,000	134,348,000	195,028,000	'
OPERATING ACTIVITIES	'	'	'	'
Net income	167,699,000	134,348,000	195,028,000	'
Net amortization of premiums and accretion of discounts	-115,060,000	-158,227,000	-194,434,000	'
Gain on retirement of long-term obligations	0	0	-9,685,000	'
Securities (gains) losses	0	-2,277,000	288,000	'
Gain on sale of other assets	-4,085,000	0	0	'
Other than temporary impairment on securities	0	'	'	'
Change in other assets	103,974,000	-17,617,000	89,979,000	'
Change in other liabilities	56,998,000	23,967,000	-1,541,000	'
INVESTING ACTIVITIES	'	'	'	'
Net change in short-term borrowings	-57,087,000	-101,717,000	-283,440,000	'
Retirement of long-term obligations	-4,152,000	-196,338,000	-320,730,000	'
Repurchase of common stock	-321,000	-103,624,000	-24,387,000	'
Cash dividends paid	-8,663,000	-15,398,000	-12,499,000	'
Net change in cash	-106,131,000	48,929,000	130,623,000	'
Cash and due from banks at beginning of period	639,730,000	590,801,000	460,178,000	'
Cash and due from banks at end of period	533,599,000	639,730,000	590,801,000	'
Cash payments for	'	'	'	'
Interest	59,234,000	104,514,000	157,477,000	'
Income taxes	102,890,000	66,453,000	91,465,000	'
Parent [Member]	'	'	'	'
Assets	'	'	'	'
Cash	13,047,000	2,131,000	'	'
Investment securities	234,488,000	237,765,000	'	'
Investment in subsidiaries	2,058,505,000	1,969,600,000	'	'
Due from subsidiaries	145,666,000	78,512,000	'	'
Other assets	144,998,000	83,283,000	'	'
Total assets	2,596,704,000	2,371,291,000	'	'
Liabilities and Shareholders' Equity	'	'	'	'
Short-term borrowings	411,907,000	399,047,000	'	'
Long-term obligations	96,392,000	96,392,000	'	'
Other liabilities	11,730,000	11,845,000	'	'
Stockholders' equity	2,076,675,000	1,864,007,000	'	'
Total liabilities and shareholders' equity	2,596,704,000	2,371,291,000	'	'
Income Statement [Abstract]	'	'	'	'
Interest income	1,387,000	1,353,000	1,345,000	'
Interest expense	7,065,000	15,435,000	21,512,000	'
Net interest income (loss)	-5,678,000	-14,082,000	-20,167,000	'
Dividends from subsidiaries	131,006,000	179,588,000	82,812,000	'
Other income (loss)	3,620,000	2,843,000	9,699,000	'
Other operating expense	2,344,000	6,384,000	5,298,000	'
Income before income tax benefit and equity in undistributed net income of subsidiaries	126,604,000	161,965,000	67,046,000	'
Income tax benefit	-2,095,000	-8,417,000	-5,531,000	'
Income before equity in undistributed net income of subsidiaries	128,699,000	170,382,000	72,577,000	'
(Excess distributions) equity in undistributed net income of subsidiaries	39,000,000	-36,034,000	122,451,000	'
Net income	167,699,000	134,348,000	195,028,000	'
OPERATING ACTIVITIES	'	'	'	'
Net income	167,699,000	134,348,000	195,028,000	'
Undistributed net income of subsidiaries	-39,000,000	36,034,000	-122,451,000	'
Net amortization of premiums and accretion of discounts	334,000	439,000	203,000	'
Gain on retirement of long-term obligations	0	0	-9,685,000	'
Securities (gains) losses	0	-2,274,000	-62,000	'
Gain on sale of other assets	-1,331,000	0	0	'
Other than temporary impairment on securities	0	45,000	26,000	'
Change in other assets	-61,704,000	30,761,000	-20,951,000	'
Change in other liabilities	-2,096,000	-10,148,000	-1,925,000	'
Net cash provided by (Used in) Operating Activities	63,902,000	189,205,000	40,183,000	'
INVESTING ACTIVITIES	'	'	'	'
Net change in due from subsidiaries	-67,154,000	42,323,000	146,463,000	'
Purchases of investment securities	-126,197,000	-111,409,000	-220,387,000	'
Maturities and sales of investment securities	135,000,000	112,625,000	75,151,000	'
Investment in subsidiaries	1,489,000	9,298,000	0	'
Net Cash Provided by (Used in) Investing Activities	-56,862,000	52,837,000	1,227,000	'
Net change in short-term borrowings	12,860,000	23,651,000	4,046,000	'
Retirement of long-term obligations	0	-155,305,000	-11,815,000	'
Repurchase of common stock	-321,000	-103,624,000	-24,387,000	'
Cash dividends paid	-8,663,000	-15,398,000	-12,499,000	'
Net cash used by financing activities	3,876,000	-250,676,000	-44,655,000	'
Net change in cash	10,916,000	-8,634,000	-3,245,000	'
Cash and due from banks at beginning of period	2,131,000	10,765,000	14,010,000	'
Cash and due from banks at end of period	13,047,000	2,131,000	10,765,000	'
Cash payments for	'	'	'	'
Interest	6,904,000	25,574,000	20,677,000	'
Income taxes	$102,890,000	$66,453,000	$91,465,000	'