Simmons First National (SFNC) 10-Q 11 May 15 2015 Q1 Quarterly report Financial data

Document_And_Entity_Informatio

Document And Entity Information	3 Months Ended
	Mar. 31, 2015	Apr. 28, 2015
Document and Entity Information [Abstract]
Entity Registrant Name	SIMMONS FIRST NATIONAL CORP
Document Type	10-Q
Current Fiscal Year End Date	-19
Entity Common Stock, Shares Outstanding		29,851,254
Amendment Flag	FALSE
Entity Central Index Key	90498
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Accelerated Filer
Entity Well-known Seasoned Issuer	No
Document Period End Date	31-Mar-15
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Mar. 31, 2015		Dec. 31, 2014
In Thousands, unless otherwise specified
ASSETS
Cash and non-interest bearing balances due from banks	$83,424		$54,347
Interest bearing balances due from banks	423,986		281,562
Federal funds sold	178,418
Cash and cash equivalents	685,828		335,909
Interest bearing balances due from banks - time	25,000
Investment securities	1,609,806		1,082,870
Mortgage loans held for sale	25,513		21,265
Assets held in trading accounts	6,528		6,987
Loans:
Legacy loans	2,115,380		2,053,721
Allowance for loan losses	-29,183		-29,028
Loans acquired, not covered by FDIC loss share (net of discount)	2,418,440	[1]	575,980	[1]
Loans acquired, covered by FDIC loss share (net of discount and allowance)	102,468	[1]	106,933	[1]
Net loans	4,607,105		2,707,606
FDIC indemnification asset	15,965		22,663
Premises and equipment	200,091		122,246
Premises held for sale			6,846
Foreclosed assets not covered by FDIC loss share	50,723		44,856
Foreclosed assets covered by FDIC loss share	12,010		11,793
Interest receivable	24,719		16,774
Bank owned life insurance	117,296		77,592
Goodwill	314,643		108,095
Other intangible assets	47,887		22,526
Other assets	74,710		55,326
Total assets	7,817,824		4,643,354
Deposits:
Non-interest bearing transaction accounts	1,123,966		889,260
Interest bearing transaction accounts and savings deposits	3,627,870		2,006,271
Time deposits	1,522,872		965,187
Total deposits	6,274,708		3,860,718
Federal funds purchased and securities sold under agreements to repurchase	111,484		110,586
Other borrowings	285,060		114,682
Subordinated debentures	62,994		20,620
Accrued interest and other liabilities	69,841		42,429
Total liabilities	6,804,087		4,149,035
Preferred stock, 40,040,000 shares authorized; Series A, $0.01 par value, $1,000 liquidation value per share; 30,852 shares issued and outstanding at March 31, 2015	30,852
Common stock, Class A, $0.01 par value; 60,000,000 shares authorized; 29,850,034 and 18,052,488 shares issued and outstanding at March 31, 2015 and December 31, 2014, respectively	299		181
Surplus	639,493		156,568
Undivided profits	341,238		338,906
Accumulated other comprehensive income (loss)	1,855		-1,336
Total stockholders’ equity	1,013,737		494,319
Total liabilities and stockholders’ equity	$7,817,824		$4,643,354
[1]	See Note 5, Loans Acquired, for segregation of loans acquired by loan class.

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parentheticals) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Preferred stock, par value (in Dollars per share)	$0.01
Preferred stock, liquidation value (in Dollars per share)	$1,000
Preferred stock, shares authorized	40,040,000
Preferred stock, shares issued	30,852
Preferred stock, shares outstanding	30,852
Common stock Class A par value (in Dollars per share)	$0.01	$0.01
Common stock Class A shares authorized	60,000,000	60,000,000
Common stock Class A shares issued	29,850,034	18,052,488
Common stock Class A shares outstanding	29,850,034	18,052,488

Consolidated_Statements_of_Inc

Consolidated Statements of Income (Unaudited) (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
INTEREST INCOME
Loans	$50,986	$40,131
Federal funds sold	29	1
Investment securities	5,879	4,549
Mortgage loans held for sale	148	69
Assets held in trading accounts	3	5
Interest bearing balances due from banks	210	279
TOTAL INTEREST INCOME	57,255	45,034
INTEREST EXPENSE
Deposits	2,944	2,269
Federal funds purchased and securities sold under agreements to repurchase	64	53
Other borrowings	1,051	1,010
Subordinated debentures	234	157
TOTAL INTEREST EXPENSE	4,293	3,489
NET INTEREST INCOME	52,962	41,545
Provision for loan losses	1,171	908
NET INTEREST INCOME AFTER PROVISION FOR LOAN LOSSES	51,791	40,637
NON-INTEREST INCOME
Trust income	2,251	1,537
Service charges on deposit accounts	6,363	6,068
Other service charges and fees	1,827	1,866
Mortgage lending income	2,262	810
Investment banking income	894	181
Credit card fees	5,648	4,600
Bank owned life insurance income	572	330
Loss on sale of securities	-38
Net loss on assets covered by FDIC loss share agreements	-2,671	-7,370
Other income	1,390	1,176
TOTAL NON-INTEREST INCOME	18,498	9,198
NON-INTEREST EXPENSE
Salaries and employee benefits	26,771	22,464
Occupancy expense, net	3,557	3,890
Furniture and equipment expense	3,268	2,014
Other real estate and foreclosure expense	381	873
Deposit insurance	870	668
Merger related costs	10,419	1,272
Other operating expenses	12,106	13,370
TOTAL NON-INTEREST EXPENSE	57,372	44,551
INCOME BEFORE INCOME TAXES	12,917	5,284
Provision for income taxes	4,182	932
NET INCOME	8,735	4,352
Preferred stock dividends	26
NET INCOME AVAILABLE TO COMMON STOCKHOLDERS	$8,709	$4,352
BASIC EARNINGS PER SHARE (in Dollars per share)	$0.39	$0.27
DILUTED EARNINGS PER SHARE (in Dollars per share)	$0.39	$0.27

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (Unaudited) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
NET INCOME	$8,735	$4,352
OTHER COMPREHENSIVE INCOME
Unrealized holding gains arising during the period on available-for-sale securities	5,213	1,453
Less: Reclassification adjustment for realized losses included in net income	-38
Other comprehensive gain, before tax effect	5,251	1,453
Less: Tax effect of other comprehensive gain	2,060	570
TOTAL OTHER COMPREHENSIVE INCOME	3,191	883
COMPREHENSIVE INCOME	$11,926	$5,235

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (Unaudited) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
OPERATING ACTIVITIES
Net income	$8,735	$4,352	$31,336
Items not requiring (providing) cash:
Depreciation and amortization	3,001	1,897
Provision for loan losses	1,171	908
Net (accretion) amortization of investment securities and assets not covered by FDIC loss share	-5,960	-1,073
Stock-based compensation expense	485	361
Net accretion on assets covered by FDIC loss share	-184	-715
Deferred income taxes	-1,578	-2,667
Loss on sale of available-for-sale securities	-38
Bank owned life insurance income	-572	-330
Changes in:
Interest receivable	1,787	552
Mortgage loans held for sale	-4,248	-7,223
Assets held in trading accounts	459	2,113
Other assets	3,444	-2,835
Accrued interest and other liabilities	2,599	4,206
Income taxes payable	7,912	2,333
Net cash provided by operating activities	17,013	1,879
INVESTING ACTIVITIES
Net collections of loans not covered by FDIC loss share	13,522	26,757
Net collections of loans covered by FDIC loss share	6,440	16,061
Purchases of premises and equipment, net	-3,454	1,969
Proceeds from sale of foreclosed assets held for sale	3,916	8,730
Proceeds from sale of foreclosed assets held for sale, covered by FDIC loss share	829	2,934
Proceeds from sale of available-for-sale securities	238	10
Proceeds from maturities of available-for-sale securities	32,489	11,687
Purchases of available-for-sale securities	-52,591	-63,533
Proceeds from maturities of held-to-maturity securities	168,621	36,307
Purchases of held-to-maturity securities	-5,265	-67,265
Cash received on FDIC loss share	3,980	3,859
Cash received in business combinations, net of cash paid	201,029
Net cash provided by (used in) investing activities	369,754	-22,484
FINANCING ACTIVITIES
Net change in deposits	3,214	9,481
Dividends paid on preferred stock	-26
Dividends paid on common stock	-6,377	-3,575
Net change in other borrowed funds	-20,367	-120
Net change in federal funds purchased and securities sold under agreements to repurchase	-15,332	-3,244
Net shares issued under stock compensation plans	2,040	819
Net cash (used in) provided by financing activities	-36,848	3,361
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	349,919	-17,244
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	335,909	539,380	522,136
CASH AND CASH EQUIVALENTS, END OF PERIOD	$685,828	$522,136	$335,909

Consolidated_Statements_of_Sto

Consolidated Statements of Stockholders’ Equity (USD $)	Preferred Stock [Member]	Preferred Stock [Member]	Common Stock [Member]	Common Stock [Member]	Common Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Additional Paid-in Capital [Member]	Additional Paid-in Capital [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]	Delta Trust [Member]	Community First Bancshares, Inc. [Member]	Liberty [Member]	Total
In Thousands, unless otherwise specified	Community First Bancshares, Inc. [Member]		Delta Trust [Member]	Community First Bancshares, Inc. [Member]	Liberty [Member]		Delta Trust [Member]	Community First Bancshares, Inc. [Member]	Liberty [Member]
Balance at Dec. 31, 2013						$162				$88,095	($3,002)	$318,577				$403,832
Comprehensive income:
Net income												4,352				4,352
Change in unrealized depreciation on available-for-sale securities, net of income taxes											883					883
Comprehensive income																5,235
Stock issued as bonus shares						1				269						270
Vesting bonus shares, net of forfeitures										361						361
Stock issued for employee stock purchase plan										118						118
Exercise of stock options										431						431
Cash Dividends												-3,575				-3,575
Balance at Mar. 31, 2014						163				89,274	-2,119	319,354				406,672
Comprehensive income:
Net income												31,336				31,336
Change in unrealized depreciation on available-for-sale securities, net of income taxes											783					783
Comprehensive income																32,119
Stock issued as bonus shares										172						172
Vesting bonus shares, net of forfeitures										1,062						1,062
Exercise of stock options						2				1,243						1,245
Stock issued for employee stock purchase plan										-213						-213
Stock issued for acquisition			16				65,030						65,046
Cash Dividends												-11,784				-11,784
Balance at Dec. 31, 2014						181				156,568	-1,336	338,906				494,319
Comprehensive income:
Net income												8,735				8,735
Change in unrealized depreciation on available-for-sale securities, net of income taxes											3,191					3,191
Comprehensive income																11,926
Stock issued as bonus shares						1				1,564						1,565
Vesting bonus shares, net of forfeitures										384						384
Stock issued for employee stock purchase plan										226						226
Exercise of stock options										280						280
Stock granted under stock-based compensation plans										101						101
Stock issued for employee stock purchase plan										-31						-31
Stock issued for acquisition	30,852			65	52			268,277	212,124					299,194	212,176
Dividends on preferred stock												-26				-26
Dividends on common stock – $0.23 per share												-6,377				-6,377
Balance at Mar. 31, 2015		$30,852				$299				$639,493	$1,855	$341,238				$1,013,737

Consolidated_Statements_of_Sto1

Consolidated Statements of Stockholders’ Equity (Parentheticals) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Exercise of stock options, shares	10,410
Preferred Stock [Member] | Community First Bancshares, Inc. [Member]
Stock issued for acquisition – shares	30,852
Common Stock [Member] | Delta Trust [Member]
Stock issued for acquisition – shares			1,629,515
Common Stock [Member] | Community First Bancshares, Inc. [Member]
Stock issued for acquisition – shares	6,552,916
Common Stock [Member] | Liberty [Member]
Stock issued for acquisition – shares	5,181,337
Common Stock [Member]
Stock issued as bonus, shares	56,600	63,530	70,350
Stock issued for employee stock purchase plan	6,528	4,897
Exercise of stock options, shares	10,410	16,580	48,140
Vesting bonus shares, net of forfeitures	9,500		1,560
Securities exchanged under stock option plan	745		5,220
Additional Paid-in Capital [Member]
Change in unrealized depreciation on available-for-sale securities, net of income taxes (in Dollars)	2,060	570	505
Accumulated Other Comprehensive Income (Loss) [Member]
Cash dividends, per share (in Dollars per share)	0.23	0.22	0.64

Note_1_Basis_of_Presentation

Note 1 - Basis of Presentation	3 Months Ended
	Mar. 31, 2015
Disclosure Text Block [Abstract]
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]	NOTE 1:	BASIS OF PRESENTATION
	The consolidated financial statements include the accounts of Simmons First National Corporation (the “Company”) and its subsidiaries.  Significant intercompany accounts and transactions have been eliminated in consolidation.
	All adjustments made to the unaudited financial statements were of a normal recurring nature.  In the opinion of management, all adjustments necessary for a fair presentation of the results of interim periods have been made.  Certain prior year amounts are reclassified to conform to current year classification.  The consolidated balance sheet of the Company as of December 31, 2014, has been derived from the audited consolidated balance sheet of the Company as of that date.  The results of operations for the period are not necessarily indicative of the results to be expected for the full year.
	Certain information and note disclosures normally included in the Company’s annual financial statements prepared in accordance with accounting principles generally accepted in the United States of America have been condensed or omitted.  These consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in the Company’s Form 10-K Annual Report for 2014 filed with the U.S. Securities and Exchange Commission (the “SEC”).
	Recently Issued Accounting Pronouncements
	ASU 2014-17 – Business Combinations: Pushdown Accounting (“ASU 2014-17”).  ASU 2014-17 amends existing guidance related to the accounting by an acquired entity upon a change-in-control event. The standard provides an acquired entity with an option to apply pushdown accounting in its separate financial statements upon occurrence of an event in which an acquirer obtains control of the acquired entity. An acquired entity may elect the option to apply pushdown accounting in the reporting period in which the change-in-control event occurs. If pushdown accounting is not applied in the reporting period in which the change-in-control event occurs, an acquired entity will have the option to elect to apply pushdown accounting in a subsequent reporting period to the acquired entity’s most recent change-in-control event.  ASU 2014-17 was effective on November 18, 2014.  The adoption of this standard has not had a material effect on the Company’s operating results or financial condition.
	ASU 2014-14 – Receivables – Troubled Debt Restructurings by Creditors: Classification of Certain Government-Guaranteed Mortgage Loans Upon Foreclosure (“ASU 2014-14”).  ASU 2014-14 amends existing guidance related to the classification of certain government-guaranteed mortgage loans, including those guaranteed by the FHA and the VA, upon foreclosure. It requires that a mortgage loan be derecognized and a separate other receivable be recognized upon foreclosure if three conditions are met.  Upon foreclosure, the separate other receivable should be measured based on the amount of the loan balance (principal and interest) expected to be recovered from the guarantor.  ASU 2014-14 is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2014, and early adoption is permitted.  It can be applied using a prospective transition method or a modified retrospective transition using a cumulative-effect adjustment.  The adoption of this standard has not had a material effect on the Company’s results of operations, financial position or disclosures.
	ASU 2014-12 – Compensation – Stock Compensation – Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved After the Requisite Service Period (“ASU 2014-12”).  ASU 2014-12 amends existing guidance related to the accounting for share-based payments when the terms of an award provide that a performance target could be achieved after the requisite service period. The standard requires that a performance target that affects vesting and that could be achieved after the requisite service period should be treated as a performance condition.  ASU 2014-12 is effective for annual periods and interim periods within those annual periods beginning after December 15, 2015, and early adoption is permitted.  It can be applied either prospectively to all awards granted or modified after the effective date or retrospectively to all awards with performance targets that are outstanding as of the beginning of the earliest annual period presented in the financial statements and to all new or modified awards thereafter. The adoption of this standard is not expected to have a material effect on the Company’s operating results or financial condition.
	ASU 2014-11 – Transfers and Servicing – Repurchase-to-Maturity Transactions, Repurchase Financings, and Disclosures (“ASU 2014-11”).  ASU 2014-11 aligns the accounting for repurchase-to-maturity transactions and repurchase agreements executed as a repurchase financing with the accounting for other typical repurchase agreements. ASU 2014-11 requires that these transactions all be accounted for as secured borrowings. The standard requires a new disclosure for transactions economically similar to repurchase agreements in which the transferor retains substantially all of the exposure to the economic return on the transferred financial assets throughout the term of the transaction and requires expanded disclosures about the nature of collateral pledged in repurchase agreements and similar transactions accounted for as secured borrowings.  ASU 2014-11 is effective for the first interim or annual period beginning after December 15, 2014.  An entity is required to present changes in accounting for transactions outstanding on the effective date as a cumulative-effect adjustment to retained earnings as of the beginning of the period of adoption. Earlier application for a public business entity is prohibited.  The adoption of this standard did not have a material effect on the Company’s results of operations, financial position or disclosures.
	ASU 2014-09 – Revenue from Contracts with Customers (“ASU 2014-09”).  ASU 2014-09 provides guidance that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. ASU 2014-09 is effective prospectively, for annual and interim periods, beginning after December 15, 2016. The Company is currently evaluating the impact this standard will have on the Company’s results of operations, financial position or disclosures.
	ASU 2014-04 – Receivables – Troubled Debt Restructurings by Creditors (“ASU 2014-04”).  ASU 2014-04 clarifies when a creditor should reclassify mortgage loans collateralized by residential real estate from loans to other real estate owned.  It defines when an in-substance repossession or foreclosure has occurred and when a creditor is considered to have received physical possession of residential real estate collateralizing a mortgage loan.  ASU 2014-04 is effective for fiscal years beginning after December 31, 2014, and early adoption is permitted.  It can be applied either prospectively or using a modified retrospective transition method.  The adoption of this standard has not had a material effect on the Company’s results of operations, financial position or disclosures.
	There have been no other significant changes to the Company’s accounting policies from the 2014 Form 10-K.  Presently, the Company is not aware of any other changes to the Accounting Standards Codification that will have a material impact on the Company’s present or future financial position or results of operations.
	Acquisition Accounting, Acquired Loans
	The Company accounts for its acquisitions under ASC Topic 805, Business Combinations, which requires the use of the purchase method of accounting.  All identifiable assets acquired, including loans, are recorded at fair value.  No allowance for loan losses related to the acquired loans is recorded on the acquisition date as the fair value of the loans acquired incorporates assumptions regarding credit risk.  Loans acquired are recorded at fair value in accordance with the fair value methodology prescribed in ASC Topic 820, exclusive of the shared-loss agreements with the FDIC.  The fair value estimates associated with the loans include estimates related to expected prepayments and the amount and timing of undiscounted expected principal, interest and other cash flows.
	The Company evaluates loans acquired in accordance with the provisions of ASC Topic 310-20, Nonrefundable Fees and Other Costs.  The fair value discount on these loans is accreted into interest income over the weighted average life of the loans using a constant yield method.  These loans are not considered to be impaired loans.  The Company evaluates purchased impaired loans in accordance with the provisions of ASC Topic 310-30, Loans and Debt Securities Acquired with Deteriorated Credit Quality.  Purchased loans are considered impaired if there is evidence of credit deterioration since origination and if it is probable that not all contractually required payments will be collected.
	The Company evaluates all of the loans purchased in conjunction with its FDIC-assisted transactions in accordance with the provisions of ASC Topic 310-30.  All loans acquired in the FDIC transactions, both covered and not covered, were deemed to be impaired loans.  All loans acquired, whether or not covered by FDIC loss share agreements, are considered impaired if there is evidence of credit deterioration since origination and if it is probable that not all contractually required payments will be collected.
	For impaired loans accounted for under ASC Topic 310-30, we continue to estimate cash flows expected to be collected on pools of loans sharing common risk characteristics, which are treated in the aggregate when applying various valuation techniques.  We evaluate at each balance sheet date whether the present value of our pools of loans determined using the effective interest rates has decreased significantly and if so, recognize a provision for loan loss in our consolidated statement of income.  For any significant increases in cash flows expected to be collected, we adjust the amount of accretable yield recognized on a prospective basis over the pool’s remaining life.
	Covered Loans and Related Indemnification Asset
	Because the FDIC will reimburse us for certain losses incurred on certain acquired loans, an indemnification asset is recorded at fair value at the acquisition date.  The indemnification asset is recognized at the same time as the indemnified loans, and measured on the same basis, subject to collectability or contractual limitations.  The shared-loss agreements on the acquisition date reflect the reimbursements expected to be received from the FDIC, using an appropriate discount rate, which reflects counterparty credit risk and other uncertainties.
	The shared-loss agreements continue to be measured on the same basis as the related indemnified loans, as prescribed by ASC Topic 805.  Deterioration in the credit quality of the loans (immediately recorded as an adjustment to the allowance for loan losses) would immediately increase the basis of the shared-loss agreements, with the offset recorded through the consolidated statement of income.  Increases in the credit quality or cash flows of loans (reflected as an adjustment to yield and accreted into income over the remaining life of the loans) decrease the basis of the shared-loss agreements, with such decrease being accreted into income over 1) the same period or 2) the life of the shared-loss 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.  Fair value accounting incorporates into the fair value of the indemnification asset an element of the time value of money, which is accreted back into income over the life of the shared-loss agreements.
	Upon the determination of an incurred loss the indemnification asset will be reduced by the amount owed by the FDIC.  A corresponding, claim receivable is recorded until cash is received from the FDIC.  For further discussion of the Company’s acquisition and loan accounting, see Note 5, Loans Acquired.
	Earnings Per Common Share (“EPS”)
	Basic EPS is computed by dividing reported net income available to common shareholders by weighted average number of common shares outstanding during each period.  Diluted EPS is computed by dividing reported net income available to common shareholders by the weighted average common shares and all potential dilutive common shares outstanding during the period.
	Following is the computation of earnings per common share for the three months ended March 31, 2015 and 2014:
	(In thousands, except per share data)		2015		2014
	Net income available to common shareholders		$	8,709	$	4,352
	Average common shares outstanding			22,258		16,270
	Average potential dilutive common shares			92		40
	Average diluted common shares			22,350		16,310
	Basic earnings per common share		$	0.39	$	0.27
	Diluted earnings per common share		$	0.39	$	0.27
	Subsequent Events
	On April 28, 2015, the Company entered into a definitive agreement and plan of merger (the “Agreement”) with Ozark Trust & Investment Corporation (“OTIC”), including its wholly-owned non-deposit trust company, Trust Company of the Ozarks (“TCO”).  TCO is headquartered in Springfield, Missouri and has over $1 billion in assets under management.  Under the terms of the Agreement, each outstanding share of common stock of OTIC held by banks or bank holding companies will be converted into the right to receive $701.9268 in cash and each share of common stock or common stock equivalents held by any other type of shareholder will be converted into the right to receive 16.7205 shares of the Company’s common stock, all subject to certain conditions and potential adjustments.  The Company owns 1,000 shares of OTIC’s common stock, which it acquired through its acquisition of Liberty Bancshares, Inc. in February 2015.  The transaction is valued at $20.7 million (based on the Company’s April 27, 2015 closing price).  The purchase price will be allocated among the net assets of OTIC acquired as appropriate, with the remaining balance being reported as goodwill.  The transaction is subject to the routine regulatory review by the Missouri Department of Finance and other customary closing conditions.  The transaction is expected to close during the third quarter of 2015.  Upon closing, OTIC will merge into the Company.

Note_2_Acquisitions

Note 2 - Acquisitions	3 Months Ended
	Mar. 31, 2015
Disclosure Text Block Supplement [Abstract]
Mergers, Acquisitions and Dispositions Disclosures [Text Block]	NOTE 2:	ACQUISITIONS
	Liberty Bancshares, Inc.
	On February 27, 2015, the Simmons First National Corporation completed the acquisition of Liberty Bancshares, Inc. (“Liberty”), headquartered in Springfield, Missouri, including its wholly-owned bank subsidiary Liberty Bank (“LB”).  Simmons issued 5,181,337 shares of its common stock valued at approximately $212.2 million as of February 27, 2015 in exchange for all outstanding shares of Liberty common stock.
	Prior to the acquisition, Liberty conducted banking business from 23 branches located in southwest Missouri.  Including the effects of the purchase accounting adjustments, the Company acquired approximately $1.1 billion in assets, approximately $780.7 million in loans including loan discounts and approximately $874.7 million in deposits.  The Company completed the systems conversion and merged LB into Simmons Bank on April 24, 2015.
	Goodwill of $94.9 million was recorded as a result of the transaction.  The merger strengthened Simmons’ position in the southwest Missouri market and Simmons believes that it will be able to achieve cost savings by integrating the two companies and combining accounting, data processing, and other administrative functions all of which gave rise to the goodwill recorded. The goodwill will not be deductible for tax purposes.
	A summary, at fair value, of the assets acquired and liabilities assumed in the Liberty transaction, as of the acquisition date, is as follows:
	(In thousands)		Acquired from			Fair Value			Fair
			Liberty			Adjustments			Value
	Assets Acquired
	Cash and due from banks		$	102,637		$	(14	)	$	102,623
	Federal funds sold			7,060			--			7,060
	Investment securities			99,123			(335	)		98,788
	Loans acquired, not covered by FDIC loss share			790,493			(9,835	)		780,658
	Allowance for loan losses			(10,422	)		10,422			--
	Premises and equipment			34,239			(1,229	)		33,010
	Bank owned life insurance			16,972			--			16,972
	Core deposit intangible			699			13,857			14,556
	Other intangibles			3,063			(3,063	)		--
	Other assets			17,703			(4,293	)		13,410
	Total assets acquired		$	1,061,567		$	5,510		$	1,067,077
	Liabilities Assumed
	Deposits:
	Non-interest bearing transaction accounts		$	146,618		$	--		$	146,618
	Interest bearing transaction accounts and savings deposits			543,183			--			543,183
	Time deposits			184,913			--			184,913
	Total deposits			874,714			--			874,714
	FHLB borrowings			46,128			223			46,351
	Subordinated debentures			20,620			--			20,620
	Accrued interest and other liabilities			7,828			300			8,128
	Total liabilities assumed			949,290			523			949,813
	Equity			112,277			(112,277	)		--
	Total equity assumed			112,277			(112,277	)		--
	Total liabilities and equity assumed		$	1,061,567		$	(111,754	)	$	949,813
	Net assets acquired									117,264
	Purchase price									212,176
	Goodwill								$	94,912
	The following is a description of the methods used to determine the fair values of significant assets and liabilities presented in the Liberty acquisition above.
	Cash and due from banks and federal funds sold – The carrying amount of these assets is a reasonable estimate of fair value based on the short-term nature of these assets.  Due from banks – time were acquired with an adjustment to fair value based on rates currently available to the Company for deposits in banks with similar maturities.
	Investment securities – Investment securities were acquired with an adjustment to fair value based upon quoted market prices.
	Loans acquired – Fair values for loans were based on a discounted cash flow methodology that considered factors including the type of loan and related collateral, classification status, fixed or variable interest rate, term of loan and whether or not the loan was amortizing, and current discount rates.  The discount rates used for loans are based on current market rates for new originations of comparable loans and include adjustments for liquidity concerns.  The discount rate does not include a factor for credit losses as that has been included in the estimated cash flows.  Loans were grouped together according to similar characteristics and were treated in the aggregate when applying various valuation techniques.
	Premises and equipment – Bank premises and equipment were acquired with an adjustment to fair value, which represents the difference between the Company’s current analysis of property and equipment values completed in connection with the acquisition and book value acquired.
	Bank owned life insurance – Bank owned life insurance is carried at its current cash surrender value, which is the most reasonable estimate of fair value.
	Goodwill – The consideration paid as a result of the acquisition exceeded the fair value of the assets acquired, resulting in an intangible asset, goodwill, of $94.9 million.
	Core deposit intangible – This intangible asset represents the value of the relationships that Liberty had with its deposit customers.  The fair value of this intangible asset was estimated based on a discounted cash flow methodology that gave appropriate consideration to expected customer attrition rates, cost of the deposit base and the net maintenance cost attributable to customer deposits.
	Other assets – The fair value adjustment results from certain assets whose value was estimated to be less than book value, such as certain prepaid assets, receivables and other miscellaneous assets.  The deferred tax asset, included in other assets, is based on 39.225% of fair value adjustments related to the acquired assets and assumed liabilities and on a calculation of future tax benefits.  The Company also recorded Liberty’s remaining deferred tax assets and liabilities as of the acquisition date.
	Deposits – The fair values used for the demand and savings deposits that comprise the transaction accounts acquired, by definition equal the amount payable on demand at the acquisition date.  The Company performed a fair value analysis of the estimated weighted average interest rate of Liberty’s certificates of deposits compared to the current market rates. Based on the results of the analysis, the estimated fair value adjustment was immaterial.FHLB borrowings – The fair value of Federal Home Loan Bank borrowings is estimated based on borrowing rates currently available to the Company for borrowings with similar terms and maturities.
	Subordinated debentures – The fair value of subordinated debentures is estimated based on borrowing rates currently available to the Company for borrowings with similar terms and maturities.
	Accrued interest and other liabilities – The adjustment establishes a liability for unfunded commitments equal to the fair value of that liability at the date of acquisition.
	The purchase price allocation and certain fair value measurements remain preliminary due to the timing of the acquisition and due to the number of assets acquired and liabilities assumed.  Management will continue to review the estimated fair values of loans, property and equipment, intangible assets, subordinated debentures, and other assets and liabilities, and to evaluate the assumed tax positions.  The Company expects to finalize its analysis of the acquired loans and subordinated debentures along with the other acquired assets and assumed liabilities in this transaction over the next few months, within one year of the acquisition.  Therefore, adjustments to the estimated amounts and carrying values may occur.
	The Company’s operating results for 2015 include the operating results of the acquired assets and assumed liabilities of Liberty subsequent to the acquisition date.
	Community First Bancshares, Inc.
	On February 27, 2015, the Simmons First National Corporation completed the acquisition of Community First Bancshares, Inc. (“Community First”), headquartered in Union City, Tennessee, including its wholly-owned bank subsidiary First State Bank (“FSB”).  Simmons issued 6,552,915 shares of its common stock valued at approximately $268.3 million as of February 27, 2015, plus $9,974 in cash in exchange for all outstanding shares of Community First common stock.  Simmons also issued $30.9 million of preferred stock in exchange for all outstanding shares of Community First preferred stock.
	Prior to the acquisition, Community First conducted banking business from 33 branches located across Tennessee.  Including the effects of the purchase accounting adjustments, the Company acquired approximately $1.9 billion in assets, approximately $1.1 billion in loans including loan discounts and approximately $1.5 billion in deposits.  The Company expects to complete the systems conversion and merge FSB into Simmons Bank by September 4, 2015.
	Goodwill of $111.6 million was recorded as a result of the transaction.  The merger allowed Simmons’ entrance into the Tennessee market and will serve as a launching platform for possible expansion into adjacent areas.  Simmons believes that it will be able to achieve cost savings by integrating the two companies and combining accounting, data processing, and other administrative functions.  Further Simmons believes it can benefit from the addition of Community First's small-business lending platform while cross-selling its trust products in Community First’s market.  This combination of factors gave rise to the goodwill recorded. The goodwill will not be deductible for tax purposes.
	A summary, at fair value, of the assets acquired and liabilities assumed in the Community First transaction, as of the acquisition date, is as follows:
	(In thousands)		Acquired from			Fair Value			Fair
			Community First			Adjustments			Value
	Assets Acquired
	Cash and due from banks		$	39,848		$	--		$	39,848
	Federal funds sold			76,508			--			76,508
	Investment securities			570,199			(3,381	)		566,818
	Loans acquired, not covered by FDIC loss share			1,163,398			(26,855	)		1,136,543
	Allowance for loan losses			(14,635	)		14,635			--
	Foreclosed assets not covered by FDIC loss share			747			--			747
Premises and equipment			44,837			(2,794	)		42,043
Bank owned life insurance			22,149			--			22,149
Goodwill			100			(100	)		--
Core deposit intangible			--			11,273			11,273
Other intangibles			--			420			420
Deferred tax asset			3,700			3,866			7,566
Other assets			11,474			--			11,474
Total assets acquired		$	1,918,325		$	(2,936	)	$	1,915,389
Liabilities Assumed
Deposits:
Non-interest bearing transaction accounts		$	103,825		$	--		$	103,825
Interest bearing transaction accounts and savings deposits			995,207			--			995,207
Time deposits			436,181			849			437,030
Total deposits			1,535,213			849			1,536,062
Federal funds purchased and securities sold under agreement to repurchase			16,230			--			16,230
FHLB borrowings			143,047			1,347			144,394
Subordinated debentures			21,754			--			21,754
Accrued interest and other liabilities			8,769			601			9,370
Total liabilities assumed			1,725,013			2,797			1,727,810
Equity			193,312			(193,312	)		--
Total equity assumed			193,312			(193,312	)		--
Total liabilities and equity assumed		$	1,918,325		$	(190,515	)	$	1,727,810
Net assets acquired									187,580
Purchase price									299,204
Goodwill								$	111,624
The following is a description of the methods used to determine the fair values of significant assets and liabilities presented in the Community First acquisition above.
Cash and due from banks and federal funds sold – The carrying amount of these assets is a reasonable estimate of fair value based on the short-term nature of these assets.
Investment securities – Investment securities were acquired with an adjustment to fair value based upon quoted market prices.
Loans acquired – Fair values for loans were based on a discounted cash flow methodology that considered factors including the type of loan and related collateral, classification status, fixed or variable interest rate, term of loan and whether or not the loan was amortizing, and current discount rates.  The discount rates used for loans are based on current market rates for new originations of comparable loans and include adjustments for liquidity concerns.  The discount rate does not include a factor for credit losses as that has been included in the estimated cash flows.  Loans were grouped together according to similar characteristics and were treated in the aggregate when applying various valuation techniques.
Foreclosed assets held for sale – These assets are presented at the estimated present values that management expects to receive when the properties are sold, net of related costs of disposal.
Premises and equipment – Bank premises and equipment were acquired with an adjustment to fair value, which represents the difference between the Company’s current analysis of property and equipment values completed in connection with the acquisition and book value acquired.
Bank owned life insurance – Bank owned life insurance is carried at its current cash surrender value, which is the most reasonable estimate of fair value.
Goodwill – The consideration paid as a result of the acquisition exceeded the fair value of the assets acquired, resulting in an intangible asset, goodwill, of $111.6 million. Goodwill established prior to the acquisition was written off.
Core deposit intangible – This intangible asset represents the value of the relationships that Community First had with its deposit customers.  The fair value of this intangible asset was estimated based on a discounted cash flow methodology that gave appropriate consideration to expected customer attrition rates, cost of the deposit base and the net maintenance cost attributable to customer deposits.
Other intangibles – This intangible asset represents the value of the relationships that Community First’s insurance subsidiary had with their customers.  The fair value of this intangible asset was estimated based on a combination of discounted cash flow methodology and a market valuation approach.
Deferred tax asset – The deferred tax asset is based on 39.225% of fair value adjustments related to the acquired assets and assumed liabilities and on a calculation of future tax benefits.  The Company also recorded Community First’s remaining deferred tax assets and liabilities as of the acquisition date.
Other assets – The carrying amount of these assets was deemed to be a reasonable estimate of fair value.
Deposits – The fair values used for the demand and savings deposits that comprise the transaction accounts acquired, by definition equal the amount payable on demand at the acquisition date.  The Company performed a fair value analysis of the estimated weighted average interest rate of Community First’s certificates of deposits compared to the current market rates and recorded a fair value adjustment for the difference.
Federal funds purchased and securities sold under agreement to repurchase – The carrying amount of federal funds purchased and securities sold under agreement to repurchase is a reasonable estimate of fair value based on the short-term nature of these liabilities.
FHLB borrowings – The fair value of Federal Home Loan Bank borrowings is estimated based on borrowing rates currently available to the Company for borrowings with similar terms and maturities.
Subordinated debentures – The fair value subordinated debentures is estimated based on borrowing rates currently available to the Company for borrowings with similar terms and maturities.
Accrued interest and other liabilities – The adjustment establishes a liability for unfunded commitments equal to the fair value of that liability at the date of acquisition.
The purchase price allocation and certain fair value measurements remain preliminary due to the timing of the acquisition and due to the number of assets acquired and liabilities assumed.  Management will continue to review the estimated fair values of loans, foreclosed assets, property and equipment, intangible assets, subordinated debentures, and other assets and liabilities, and to evaluate the assumed tax positions.  The Company expects to finalize its analysis of the acquired loans and subordinated debentures along with the other acquired assets and assumed liabilities in this transaction over the next few months, within one year of the acquisition.  Therefore, adjustments to the estimated amounts and carrying values may occur.
The Company’s operating results for 2015 include the operating results of the acquired assets and assumed liabilities of Community First subsequent to the acquisition date.
Summary of Unaudited Pro forma Information
The unaudited pro forma information below for the three-months ended March 31, 2015 and 2014 gives effect to the Liberty and Community First acquisitions as if the acquisitions had occurred on January 1, 2014. Pro forma earnings for the three months ended March 31, 2015 were adjusted to exclude $7.4 million of acquisition-related costs, net of tax, incurred by Simmons during 2015. Supplemental pro-forma earnings for the three months ended March 31, 2014 were adjusted to include these charges. The pro forma financial information is not necessarily indicative of the results of operations if the acquisitions had been effective as of this date.
(dollars in thousands)		Three-months ended			Three-months ended
		31-Mar-15			31-Mar-14
Revenue (1)		$	97,265		$	90,843
Net income		$	23,273		$	5,444
Earnings per share		$	0.78		$	0.19
-1	Net interest income plus noninterest income.
Consolidated 2015 results included approximately $4.7 million of revenue and $1.5 million of net income attributable to the Liberty acquisition and $8.2 million of revenue and $2.2 million of net income attributable to the Community First acquisition.

Note_3_Investment_Securities

Note 3 - Investment Securities	3 Months Ended
	Mar. 31, 2015
Investments, Debt and Equity Securities [Abstract]
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]	NOTE 3:	INVESTMENT SECURITIES
	The amortized cost and fair value of investment securities that are classified as held-to-maturity and available-for-sale are as follows:
			31-Mar-15											31-Dec-14
	(In thousands)		Amortized		Gross			Gross Unrealized			Estimated			Amortized		Gross			Gross Unrealized			Estimated
			Cost		Unrealized			(Losses)			Fair			Cost		Unrealized			(Losses)			Fair
					Gains						Value					Gains						Value
	Held-to-Maturity
	U.S. Government agencies		$	390,625	$	1,935		$	(1,043	)	$	391,517		$	418,914	$	929		$	(4,055	)	$	415,788
	Mortgage-backed securities			28,535		276			(145	)		28,666			29,743		56			(411	)		29,388
	State and political subdivisions			482,316		9,807			(210	)		491,907			328,310		7,000			(573	)		334,737
	Other securities			947		-			-			947			620		-			-			620
	Total HTM		$	902,423	$	12,012		$	(1,398	)	$	913,037		$	777,587	$	7,985		$	(5,039	)	$	780,533
	Available-for-Sale
	U.S. Treasury		$	4,000	$	8		$	-		$	4,008		$	4,000	$	1		$	(9	)	$	3,992
	U.S. Government agencies			346,786		355			(826	)		346,315			275,381		15			(2,580	)		272,816
	Mortgage-backed securities			308,333		3,748			(70	)		312,011			1,579		-			(7	)		1,572
	State and political subdivisions			13,342		110			-			13,452			6,536		7			(3	)		6,540
	Other securities			31,870		458			(731	)		31,597			19,985		386			(8	)		20,363
	Total AFS		$	704,331	$	4,679		$	(1,627	)	$	707,383		$	307,481	$	409		$	(2,607	)	$	305,283
	Securities with limited marketability, such as stock in the Federal Reserve Bank and the Federal Home Loan Bank, are carried at cost and are reported as other available-for-sale securities in the table above.
	Certain investment securities are valued at less than their historical cost.  Total fair value of these investments at March 31, 2015, was $537.2 million, which is approximately 33.4% of the Company’s combined available-for-sale and held-to-maturity investment portfolios.
	The following table shows the gross unrealized losses and fair value of the Company’s investments with unrealized losses, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position at March 31, 2015:
			Less Than 12 Months					12 Months or More						Total
	(In thousands)		Estimated		Gross			Estimated			Gross			Estimated		Gross
			Fair		Unrealized			Fair			Unrealized			Fair		Unrealized
			Value		Losses			Value			Losses			Value		Losses
	Held-to-Maturity
	U.S. Government agencies		$	131,872	$	(589	)	$	70,543		$	(454	)	$	202,415	$	(1,043	)
	Mortgage-backed securities			1,902		(13	)		8,895			(132	)		10,797		(145	)
	State and political subdivisions			31,294		(186	)		2,920			(24	)		34,214		(210	)
	Total HTM		$	165,068	$	(788	)	$	82,358		$	(610	)	$	247,426	$	(1,398	)
	Available-for-Sale
	U.S. Government agencies		$	196,571	$	(500	)	$	79,311		$	(326	)	$	275,882	$	(826	)
	Mortgage-backed securities			12,300		(70	)		--			--			12,300		(70	)
	State and political subdivisions			--		--			--			--			--		--
	Equity Securities			515		(2	)		--			--			515		(2	)
	Other			1,060		(729	)		--			--			1,060		(729	)
	Total AFS		$	210,446	$	(1,301	)	$	79,311		$	(326	)	$	289,757	$	(1,627	)
	These declines primarily resulted from the rate for these investments yielding less than current market rates.  Based on evaluation of available evidence, management believes the declines in fair value for these securities are temporary.  Management does not have the intent to sell these securities and management believes it is more likely than not the Company will not have to sell these securities before recovery of their amortized cost basis less any current period credit losses.
	Declines in the fair value of held-to-maturity and available-for-sale securities below their cost that are deemed to be other than temporary are reflected in earnings as realized losses.  In estimating other-than-temporary impairment losses, management considers, among other things, (i) the length of time and the extent to which the fair value has been less than cost, (ii) the financial condition and near-term prospects of the issuer, and (iii) the intent and ability of the Company to retain its investment in the issuer for a period of time sufficient to allow for any anticipated recovery in fair value.
	Management has the ability and intent to hold the securities classified as held to maturity until they mature, at which time the Company expects to receive full value for the securities.  Furthermore, as of March 31, 2015, management also had the ability and intent to hold the securities classified as available-for-sale for a period of time sufficient for a recovery of cost.  The unrealized losses are largely due to increases in market interest rates over the yields available at the time the underlying securities were purchased.  The fair value is expected to recover as the bonds approach their maturity date or repricing date or if market yields for such investments decline.  Management does not believe any of the securities are impaired due to reasons of credit quality.  Accordingly, as of March 31, 2015, management believes the impairments detailed in the table above are temporary.  Should the impairment of any of these securities become other than temporary, the cost basis of the investment will be reduced and the resulting loss recognized in net income in the period the other-than-temporary impairment is identified.
	The book value of securities sold under agreements to repurchase equaled $104.4 million and $93.5 million for March 31, 2015 and December 31, 2014, respectively.
	Income earned on securities for the three months ended March 31, 2015 and 2014, is as follows:
	(In thousands)		2015		2014
	Taxable:
	Held-to-maturity		$	1,389	$	1,349
	Available-for-sale			1,583		550
	Non-taxable:
	Held-to-maturity			2,602		2,619
	Available-for-sale			305		31
	Total		$	5,879	$	4,549
	Maturities of investment securities at March 31, 2015, are as follows:
			Held-to-Maturity					Available-for-Sale
	(In thousands)		Amortized		Fair			Amortized			Fair
			Cost		Value			Cost			Value
	One year or less		$	41,310	$	41,392		$	58,762		$	58,752
	After one through five years			414,115		414,863			247,200			246,659
	After five through ten years			182,259		185,229			123,795			124,808
	After ten years			264,739		271,553			243,476			246,322
	Other securities (no maturity)			-		-			31,098			30,842
	Total		$	902,423	$	913,037		$	704,331		$	707,383
	The carrying value, which approximates the fair value, of securities pledged as collateral, to secure public deposits and for other purposes, amounted to $888.6 million at March 31, 2015 and $520.4 million at December 31, 2014.
	There were $2,000 of gross realized gains and $40,000 of realized losses from the sale of available for sale securities during the three months ended March 31, 2015.  There were no realized gains or losses on investment securities for the three months ended March 31, 2014.
	The state and political subdivision debt obligations are primarily non-rated bonds representing small, Arkansas, Texas, Missouri and Tennessee issues, which are evaluated on an ongoing basis.

Note_4_Loans_and_Allowance_for

Note 4 - Loans and Allowance for Loan Losses	3 Months Ended
	Mar. 31, 2015
Receivables [Abstract]
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]	NOTE 4:	LOANS AND ALLOWANCE FOR LOAN LOSSES
	At March 31, 2015, the Company’s loan portfolio was $4.64 billion, compared to $2.74 billion at December 31, 2014.  The various categories of loans are summarized as follows:
	(In thousands)		March 31,			December 31,
			2015			2014
	Consumer:
	Credit cards		$	171,413		$	185,380
	Other consumer			107,486			103,402
	Total consumer			278,899			288,782
	Real Estate:
	Construction			178,929			181,968
	Single family residential			467,671			455,563
	Other commercial			755,701			714,797
	Total real estate			1,402,301			1,352,328
	Commercial:
	Commercial			324,815			291,820
	Agricultural			105,228			115,658
	Total commercial			430,043			407,478
	Other			4,137			5,133
	Legacy loans			2,115,380			2,053,721
	Loans acquired, not covered by FDIC loss share (net of discount) (1)			2,418,440			575,980
	Loans acquired, covered by FDIC loss share (net of discount and allowance) (1)			102,468			106,933
	Total loans		$	4,638,288		$	2,736,634
	(1)	See Note 5, Loans Acquired, for segregation of loans acquired by loan class.
	Loan Origination/Risk Management – The Company seeks to manage its credit risk by diversifying its loan portfolio, determining that borrowers have adequate sources of cash flow for loan repayment without liquidation of collateral; obtaining and monitoring collateral; providing an adequate allowance for loans losses by regularly reviewing loans through the internal loan review process.  The loan portfolio is diversified by borrower, purpose and industry.  The Company seeks to use diversification within the loan portfolio to reduce its credit risk, thereby minimizing the adverse impact on the portfolio, if weaknesses develop in either the economy or a particular segment of borrowers.  Collateral requirements are based on credit assessments of borrowers and may be used to recover the debt in case of default.  Furthermore, factors that influenced the Company’s judgment regarding the allowance for loan losses consists of a five-year historical loss average segregated by each primary loan sector.  On an annual basis, historical loss rates are calculated for each sector.
	Consumer – The consumer loan portfolio consists of credit card loans and other consumer loans.  The Company no longer originates or services student loans.  Credit card loans are diversified by geographic region to reduce credit risk and minimize any adverse impact on the portfolio.  Although they are regularly reviewed to facilitate the identification and monitoring of creditworthiness, credit card loans are unsecured loans, making them more susceptible to be impacted by economic downturns resulting in increasing unemployment.  Other consumer loans include direct and indirect installment loans and overdrafts.  Loans in this portfolio segment are sensitive to unemployment and other key consumer economic measures.
	Real estate – The real estate loan portfolio consists of construction loans, single family residential loans and commercial loans.  Construction and development loans (“C&D”) and commercial real estate loans (“CRE”) can be particularly sensitive to valuation of real estate.  Commercial real estate cycles are inevitable.  The long planning and production process for new properties and rapid shifts in business conditions and employment create an inherent tension between supply and demand for commercial properties.  While general economic trends often move individual markets in the same direction over time, the timing and magnitude of changes are determined by other forces unique to each market.  CRE cycles tend to be local in nature and longer than other credit cycles.  Factors influencing the CRE market are traditionally different from those affecting residential real estate markets; thereby making predictions for one market based on the other difficult.  Additionally, submarkets within commercial real estate – such as office, industrial, apartment, retail and hotel – also experience different cycles, providing an opportunity to lower the overall risk through diversification across types of CRE loans.  Management realizes that local demand and supply conditions will also mean that different geographic areas will experience cycles of different amplitude and length.  The Company monitors these loans closely and has no significant concentrations in its real estate loan portfolio.
	Commercial – The commercial loan portfolio includes commercial and agricultural loans, representing loans to commercial customers and farmers for use in normal business or farming operations to finance working capital needs, equipment purchase or other expansion projects.  Collection risk in this portfolio is driven by the creditworthiness of the underlying borrowers, particularly cash flow from customers’ business or farming operations.  The Company continues its efforts to keep loan terms short, reducing the negative impact of upward movement in interest rates.  Term loans are generally set up with a one or three year balloon, and the Company has recently instituted a pricing mechanism for commercial loans.  It is standard practice to require personal guaranties on all commercial loans, particularly as they relate to closely-held or limited liability entities.
	Nonaccrual and Past Due Loans – Loans are considered past due if the required principal and interest payments have not been received as of the date such payments were due.  Loans are placed on nonaccrual status when, in management’s opinion, the borrower may be unable to meet payment obligations as they become due, as well as when required by regulatory provisions.  Loans may be placed on nonaccrual status regardless of whether or not such loans are considered past due.  When interest accrual is discontinued, all unpaid accrued interest is reversed. Interest income is subsequently recognized only to the extent cash payments are received in excess of principal due.  Loans are returned to accrual status when all the principal and interest amounts contractually due are brought current and future payments are reasonably assured.
	Nonaccrual loans, excluding loans acquired, segregated by class of loans, are as follows:
	(In thousands)		March 31,			December 31,
			2015			2014
	Consumer:
	Credit cards		$	290		$	197
	Other consumer			401			405
	Total consumer			691			602
	Real estate:
	Construction			5,341			4,863
	Single family residential			4,600			4,010
	Other commercial			2,755			1,522
	Total real estate			12,696			10,395
	Commercial:
	Commercial			950			585
	Agricultural			174			456
	Total commercial			1,124			1,041
	Total		$	14,511		$	12,038
	An age analysis of past due loans, excluding loans acquired, segregated by class of loans, is as follows:
	(In thousands)		Gross			90 Days			Total			Current			Total			90 Days
			30-89 Days			or More			Past Due						Loans			Past Due &
			Past Due			Past Due												Accruing
	31-Mar-15
	Consumer:
	Credit cards		$	538		$	439		$	977		$	170,436		$	171,413		$	--
	Other consumer			1,205			388			1,593			105,893			107,486			116
	Total consumer			1,743			827			2,570			276,329			278,899			116
	Real estate:
	Construction			1,798			828			2,626			176,303			178,929			--
	Single family residential			3,023			2,568			5,591			462,080			467,671			3
	Other commercial			3,453			1,406			4,859			750,842			755,701			--
	Total real estate			8,274			4,802			13,076			1,389,225			1,402,301			3
	Commercial:
	Commercial			645			128			773			324,042			324,815			13
	Agricultural			435			72			507			104,721			105,228			3
	Total commercial			1,080			200			1,280			428,763			430,043			16
	Other			--			--			--			4,137			4,137			--
Total		$	11,097		$	5,829		$	16,926		$	2,098,454		$	2,115,380		$	135
31-Dec-14
Consumer:
Credit cards		$	687		$	457		$	1,144		$	184,236		$	185,380		$	--
Other consumer			1,349			447			1,796			101,606			103,402			223
Total consumer			2,036			904			2,940			285,842			288,782			223
Real estate:
Construction			760			570			1,330			180,638			181,968			177
Single family residential			4,913			2,213			7,126			448,437			455,563			248
Other commercial			1,987			847			2,834			711,963			714,797			--
Total real estate			7,660			3,630			11,290			1,341,038			1,352,328			425
Commercial:
Commercial			381			354			735			291,085			291,820			--
Agricultural			119			109			228			115,430			115,658			40
Total commercial			500			463			963			406,515			407,478			40
Other			--			--			--			5,133			5,133			--
Total		$	10,196		$	4,997		$	15,193		$	2,038,528		$	2,053,721		$	688
Impaired Loans – A loan is considered impaired when it is probable that the Company will not receive all amounts due according to the contractual terms of the loans, including scheduled principal and interest payments.  This includes loans that are delinquent 90 days or more, nonaccrual loans and certain other loans identified by management.  Certain other loans identified by management consist of performing loans with specific allocations of the allowance for loan losses. Impaired loans are carried at the present value of estimated future cash flows using the loan’s existing rate, or the fair value of the collateral if the loan is collateral dependent.
Impairment is evaluated in total for smaller-balance loans of a similar nature and on an individual loan basis for other loans.  Impaired loans, or portions thereof, are charged-off when deemed uncollectible.
Impaired loans, net of government guarantees and excluding loans acquired, segregated by class of loans, are as follows:
(In thousands)		Unpaid			Recorded Investment			Recorded			Total			Related			Average		Interest
		Contractual			With No			Investment			Recorded			Allowance			Investment in		Income
		Principal			Allowance			With Allowance			Investment						Impaired		Recognized
		Balance															Loans
31-Mar-15																	Three Months Ended
																	31-Mar-15
Consumer:
Credit cards		$	439		$	439		$	--		$	439		$	13		$	318	$	5
Other consumer			572			544			8			552			91			586		9
Total consumer			1,011			983			8			991			104			904		14
Real estate:
Construction			8,098			7,482			--			7,482			464			7,251		115
Single family residential			4,789			4,385			240			4,625			781			4,475		71
Other commercial			3,310			2,590			128			2,718			564			2,100		33
Total real estate			16,197			14,457			368			14,825			1,809			13,826		219
Commercial:
Commercial			1,022			958			--			958			172			762		12
Agricultural			182			141			--			141			25			301		5
Total commercial			1,204			1,099			--			1,099			197			1,063		17
Total		$	18,412		$	16,539		$	376		$	16,915		$	2,110		$	15,793	$	250
31-Dec-14																	Three Months Ended
																	31-Mar-14
Consumer:
Credit cards		$	197		$	197		$	--		$	197		$	6		$	494	$	5
Other consumer			604			610			9			619			118			860		10
Total consumer			801			807			9			816			124			1,354		15
Real estate:
Construction			7,400			7,020			--			7,020			599			3,001		33
Single family residential			4,442			3,948			377			4,325			899			3,982		44
Other commercial			1,955			1,446			36			1,482			268			9,567		106
Total real estate			13,797			12,414			413			12,827			1,756			16,550		183
Commercial:
Commercial			1,227			566			--			566			102			638		7
Agricultural			501			460			--			460			83			82		1
Total commercial			1,728			1,026			--			1,026			185			720		8
Total		$	16,236		$	14,247		$	422		$	14,669		$	2,065		$	18,624	$	206
At March 31, 2015, and December 31, 2014, impaired loans, net of government guarantees and excluding loans acquired, totaled $16.9 million and $14.7 million, respectively.  Allocations of the allowance for loan losses relative to impaired loans were $2.1 million at March 31, 2015 and December 31, 2014.  Approximately $250,000 of interest income was recognized on average impaired loans of $15.8 million for the three months ended March 31, 2015.  Interest income recognized on impaired loans on a cash basis during the three months ended March 31, 2015 and 2014 was not material.
Included in certain impaired loan categories are troubled debt restructurings (“TDRs”).  When the Company restructures a loan to a borrower that is experiencing financial difficulty and grants a concession that it would not otherwise consider, a “troubled debt restructuring” results and the Company classifies the loan as a TDR.  The Company grants various types of concessions, primarily interest rate reduction and/or payment modifications or extensions, with an occasional forgiveness of principal.
Under ASC Topic 310-10-35 – Subsequent Measurement, a TDR is considered to be impaired, and an impairment analysis must be performed.  The Company assesses the exposure for each modification, either by collateral discounting or by calculation of the present value of future cash flows, and determines if a specific allocation to the allowance for loan losses is needed.
Once an obligation has been restructured because of such credit problems, it continues to be considered a TDR until paid in full; or, if an obligation yields a market interest rate and no longer has any concession regarding payment amount or amortization, then it is not considered a TDR at the beginning of the calendar year after the year in which the improvement takes place.  The Company returns TDRs to accrual status only if (1) all contractual amounts due can reasonably be expected to be repaid within a prudent period, and (2) repayment has been in accordance with the contract for a sustained period, typically at least six months.
The following table presents a summary of troubled debt restructurings, excluding loans acquired, segregated by class of loans.
		Accruing TDR Loans						Nonaccrual TDR Loans						Total TDR Loans
(Dollars in thousands)		Number			Balance			Number			Balance			Number			Balance
31-Mar-15
Real estate:
Construction			-		$	-			1		$	383			1		$	383
Single-family residential			2			392			3			351			5			743
Other commercial			3			1,835			1			608			4			2,443
Total real estate			5			2,227			5			1,342			10			3,569
Total			5		$	2,227			5		$	1,342			10		$	3,569
31-Dec-14
Real estate:
Construction			-		$	-			1		$	391			1		$	391
Single-family residential			2			393			1			3			3			396
Other commercial			3			1,840			1			614			4			2,454
Total real estate			5			2,233			3			1,008			8			3,241
Total			5		$	2,233			3		$	1,008			8		$	3,241
The following table presents loans that were restructured as TDRs during the three months ended March 31, 2015 and 2014, excluding loans acquired, segregated by class of loans.
											Modification Type
(Dollars in thousands)		Number of			Balance Prior			Balance at			Change in			Change in			Financial Impact
		Loans			to TDR			31-Mar			Maturity			Rate			on Date of
											Date						Restructure
Three Months Ended March 31, 2015
Real estate:
Single-family residential			2		$	348		$	348		$	348		$	-		$	-
Total real estate			2			348			348			348			-			-
Total			2		$	348		$	348		$	348		$	-		$	-
Three Months Ended March 31, 2014
Real estate:
Single-family residential			1		$	1,031		$	1,031		$	1,031		$	-		$	-
Total real estate			1			1,031			1,031			1,031			-			-
Total			1		$	1,031		$	1,031		$	1,031		$	-		$	-
During the three months ended March 31, 2015, the Company modified two loans with a recorded investment of $348,000 prior to modification which were deemed troubled debt restructuring.  The restructured loans were modified by deferring amortized principal payments and requiring interest only payments for a period of 12 months.  Based on the fair value of the collateral, no specific reserve was determined necessary for these loans.  Also, there was no immediate financial impact from the restructuring of these loans, as it was not considered necessary to charge-off interest or principal on the date of restructure.
During the three months ended March 31, 2014, the Company modified one loan with a recorded investment of $1,031,000 prior to modification which was deemed troubled debt restructuring.  The restructured loan was modified by deferring amortized principal payments and requiring interest only payments for a period of 12 months.  Based on the fair value of the collateral, no specific reserve was determined necessary for this loan.  Also, there was no immediate financial impact from the restructuring of this loan, as it was not considered necessary to charge-off interest or principal on the date of restructure.
There were no loans for which a payment default occurred during the three months ended March 31, 2015 and 2014, and that had been modified as a TDR within 12 months or less of the payment default, excluding loans acquired.  We define a payment default as a payment received more than 90 days after its due date.
Credit Quality Indicators – As part of the on-going monitoring of the credit quality of the Company’s loan portfolio, management tracks certain credit quality indicators including trends related to (i) the weighted-average risk rating of commercial and real estate loans, (ii) the level of classified commercial and real estate loans, (iii) net charge-offs, (iv) non-performing loans (see details above) and (v) the general economic conditions in the States of Arkansas, Kansas, Missouri and Tennessee.
The Company utilizes a risk rating matrix to assign a risk rate to each of its commercial and real estate loans. Loans are rated on a scale of 1 to 8.  A description of the general characteristics of the 8 risk ratings is as follows:
	·	Risk Rate 1 – Pass (Excellent) – This category includes loans which are virtually free of credit risk.  Borrowers in this category represent the highest credit quality and greatest financial strength.
	·	Risk Rate 2 – Pass (Good) - Loans under this category possess a nominal risk of default.  This category includes borrowers with strong financial strength and superior financial ratios and trends.  These loans are generally fully secured by cash or equivalents (other than those rated "excellent”).
	·	Risk Rate 3 – Pass (Acceptable – Average) - Loans in this category are considered to possess a normal level of risk.  Borrowers in this category have satisfactory financial strength and adequate cash flow coverage to service debt requirements.  If secured, the perfected collateral should be of acceptable quality and within established borrowing parameters.
	·	Risk Rate 4 – Pass (Monitor) - Loans in the Watch (Monitor) category exhibit an overall acceptable level of risk, but that risk may be increased by certain conditions, which represent "red flags".  These "red flags" require a higher level of supervision or monitoring than the normal "Pass" rated credit.  The borrower may be experiencing these conditions for the first time, or it may be recovering from weakness, which at one time justified a harsher rating.  These conditions may include: weaknesses in financial trends; marginal cash flow; one-time negative operating results; non-compliance with policy or borrowing agreements; poor diversity in operations; lack of adequate monitoring information or lender supervision; questionable management ability/stability.
	·	Risk Rate 5 – Special Mention - A loan in this category has potential weaknesses that deserve management's close attention.  If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the asset or in the institution's credit position at some future date.  Special Mention loans are not adversely classified (although they are "criticized") and do not expose an institution to sufficient risk to warrant adverse classification.  Borrowers may be experiencing adverse operating trends, or an ill-proportioned balance sheet.  Non-financial characteristics of a Special Mention rating may include management problems, pending litigation, a non-existent, or ineffective loan agreement or other material structural weakness, and/or other significant deviation from prudent lending practices.
	·	Risk Rate 6 – Substandard - A Substandard loan is inadequately protected by the current sound worth and paying capacity of the borrower or of the collateral pledged, if any.  Loans so classified must have a well-defined weakness, or weaknesses, that jeopardize the liquidation of the debt.  The loans are characterized by the distinct possibility that the Company will sustain some loss if the deficiencies are not corrected.  This does not imply ultimate loss of the principal, but may involve burdensome administrative expenses and the accompanying cost to carry the loan.
	·	Risk Rate 7 – Doubtful – A loan classified Doubtful has all the weaknesses inherent in a substandard loan except that the weaknesses make collection or liquidation in full (on the basis of currently existing facts, conditions, and values) highly questionable and improbable. Doubtful borrowers are usually in default, lack adequate liquidity, or capital, and lack the resources necessary to remain an operating entity.  The possibility of loss is extremely high, but because of specific pending events that may strengthen the asset, its classification as loss is deferred.  Pending factors include: proposed merger or acquisition; liquidation procedures; capital injection; perfection of liens on additional collateral; and refinancing plans.  Loans classified as Doubtful are placed on nonaccrual status.
	·	Risk Rate 8 – Loss - Loans classified Loss are considered uncollectible and of such little value that their continuance as bankable assets is not warranted.  This classification does not mean that the loans has absolutely no recovery or salvage value, but rather it is not practical or desirable to defer writing off this basically worthless loan, even though partial recovery may be affected in the future.  Borrowers in the Loss category are often in bankruptcy, have formally suspended debt repayments, or have otherwise ceased normal business operations.  Loans should be classified as Loss and charged-off in the period in which they become uncollectible.
Loans acquired, including loans covered by FDIC loss share agreements, are evaluated using this internal grading system.   Loans acquired through FDIC-assisted transactions are accounted for in pools.  All of the non-covered loan pools accounted for under ASC Topic 310-30 were considered satisfactory (Risk Ratings 1 – 4) at March 31, 2015 and December 31, 2014, respectively.  Loans acquired in the Liberty, Community First, Metropolitan and Delta Trust acquisitions are evaluated individually and include purchased credit impaired loans of $36.0 million and $22.3 million that are accounted for under ASC Topic 310-30 and are classified as substandard (Risk Rating 6) as of March 31, 2015 and December 31, 2014, respectively.  Of the remaining loans acquired in the Liberty, Community First, Metropolitan and Delta Trust transactions and accounted for under ASC Topic 310-20, $15.7 million and $16.6 million were classified (Risk Ratings 6, 7 and 8 – see classified loans discussion below) at March 31, 2015 and December 31, 2014, respectively.  Loans acquired, covered by loss share agreements, have additional protection provided by the FDIC. During the 2014 quarterly impairment testing on the estimated cash flows of the credit impaired loans, the Company established that some of the pools covered by loss share from our FDIC-assisted transactions had experienced material projected credit deterioration.  As a result, the Company established a $1.0 million allowance for loan losses on covered loans by recording a provision for loan losses of $0.4 million (net of FDIC-loss share adjustments) during the period ended December 31, 2014.  There was no further projected credit deterioration and no addition to the allowance for covered loans during the period ended March 31, 2015.  See Note 5, Loans Acquired, for further discussion of the acquired loans, loan pools and loss sharing agreements.
Purchased credit impaired loans are loans that showed evidence of deterioration of credit quality since origination and for which it is probable, at acquisition, that the Company will be unable to collect all amounts contractually owed.  Their fair value was initially based on the estimate of cash flows, both principal and interest, expected to be collected or estimated collateral values if cash flows are not estimable, discounted at prevailing market rates of interest.  The difference between the undiscounted cash flows expected at acquisition and the fair value at acquisition is recognized as interest income on a level-yield method over the life of the loan.  Contractually required payments for interest and principal that exceed the undiscounted cash flows expected at acquisition are not recognized as a yield adjustment.  Increases in expected cash flows subsequent to the initial investment are recognized prospectively through adjustment of the yield on the loan over its remaining life.  Decreases in expected cash flows are recognized as impairment.
Classified loans for the Company include loans in Risk Ratings 6, 7 and 8.  Loans may be classified, but not considered impaired, due to one of the following reasons:  (1) The Company has established minimum dollar amount thresholds for loan impairment testing.  Loans rated 6 – 8 that fall under the threshold amount are not tested for impairment and therefore are not included in impaired loans.  (2) Of the loans that are above the threshold amount and tested for impairment, after testing, some are considered to not be impaired and are not included in impaired loans.  Total classified loans, excluding covered and non-covered loans acquired in FDIC-assisted transactions, were $105.0 million and $82.1 million, as of March 31, 2015 and December 31, 2014, respectively.
The following table presents a summary of loans by credit risk rating as of March 31, 2015 and December 31, 2014, segregated by class of loans.
(In thousands)		Risk Rate			Risk Rate			Risk Rate			Risk Rate			Risk Rate			Total
		4-Jan			5			6			7			8
31-Mar-15
Consumer:
Credit cards		$	170,974		$	--		$	439		$	--		$	--		$	171,413
Other consumer			106,683			5			758			40			--			107,486
Total consumer			277,657			5			1,197			40			--			278,899
Real estate:
Construction			174,956			38			3,935			--			--			178,929
Single family residential			457,275			1,941			8,377			78			--			467,671
Other commercial			736,764			7,714			11,223			--			--			755,701
Total real estate			1,368,995			9,693			23,535			78			--			1,402,301
Commercial:
Commercial			301,561			1,667			21,579			8			--			324,815
Agricultural			105,034			20			174			--			--			105,228
Total commercial			406,595			1,687			21,753			8			--			430,043
Other			4,137			--			--			--			--			4,137
Loans acquired, not covered by FDIC loss share			2,332,979			27,043			56,231			2,159			28			2,418,440
Loans acquired, covered by FDIC loss share			102,468			--			--			--			--			102,468
Total		$	4,492,831		$	38,428		$	102,716		$	2,285		$	28		$	4,636,288
(In thousands)		Risk Rate			Risk Rate			Risk Rate			Risk Rate			Risk Rate			Total
		4-Jan			5			6			7			8
31-Dec-14
Consumer:
Credit cards		$	184,923		$	--		$	457		$	--		$	--		$	185,380
Other consumer			102,515			5			839			43			--			103,402
Total consumer			287,438			5			1,296			43			--			288,782
Real estate:
Construction			176,825			84			5,059			--			--			181,968
Single family residential			446,040			1,776			7,665			82			--			455,563
Other commercial			698,329			7,074			9,394			--			--			714,797
Total real estate			1,321,194			8,934			22,118			82			--			1,352,328
Commercial:
Commercial			271,017			1,544			19,248			11			--			291,820
Agricultural			115,106			20			532			--			--			115,658
Total commercial			386,123			1,564			19,780			11			--			407,478
Other			5,133			--			--			--			--			5,133
Loans acquired, not covered by FDIC loss share			535,728			1,435			36,958			1,854			5			575,980
Loans acquired, covered by FDIC loss share			106,933			--			--			--			--			106,933
Total		$	2,642,549		$	11,938		$	80,152		$	1,990		$	5		$	2,736,634
Net (charge-offs)/recoveries for the three months ended March 31, 2015 and 2014, excluding loans acquired, segregated by class of loans, were as follows:
		Three Months Ended
		March 31,
(In thousands)		2015			2014
Consumer:
Credit cards		$	(572	)	$	(545	)
Student loans			--			(9	)
Other consumer			(87	)		(16	)
Total consumer			(659	)		(570	)
Real estate:
Construction			--			(430	)
Single-family residential			(251	)		(311	)
Other commercial			(30	)		4
Total real estate			(281	)		(737	)
Commercial:
Commercial			(76	)		(42	)
Agriculture			--			(18	)
Total commercial			(76	)		(60	)
Total		$	(1,016	)	$	(1,367	)
Allowance for Loan Losses
Allowance for Loan Losses – The allowance for loan losses is a reserve established through a provision for loan losses charged to expense, which represents management’s best estimate of probable losses that have been incurred within the existing portfolio of loans.  The allowance, in the judgment of management, is necessary to reserve for estimated loan losses and risks inherent in the loan portfolio.  The Company’s allowance for loan loss methodology includes allowance allocations calculated in accordance with ASC Topic 310-10, Receivables, and allowance allocations calculated in accordance with ASC Topic 450-20, Loss Contingencies.  Accordingly, the methodology is based on the Company’s internal grading system, specific impairment analysis, qualitative and quantitative factors.
As mentioned above, allocations to the allowance for loan losses are categorized as either specific allocations or general allocations.
A loan is considered impaired when it is probable that the Company will not receive all amounts due according to the contractual terms of the loan, including scheduled principal and interest payments. For a collateral dependent loan, the Company’s evaluation process includes a valuation by appraisal or other collateral analysis. This valuation is compared to the remaining outstanding principal balance of the loan. If a loss is determined to be probable, the loss is included in the allowance for loan losses as a specific allocation. If the loan is not collateral dependent, the measurement of loss is based on the difference between the expected and contractual future cash flows of the loan.
The general allocation is calculated monthly based on management’s assessment of several factors such as (1) historical loss experience based on volumes and types, (2) volume and trends in delinquencies and nonaccruals, (3) lending policies and procedures including those for loan losses, collections and recoveries, (4) national, state and local economic trends and conditions, (5) concentrations of credit within the loan portfolio, (6) the experience, ability and depth of lending management and staff and (7) other factors and trends that will affect specific loans and categories of loans. The Company establishes general allocations for each major loan category. This category also includes allocations to loans which are collectively evaluated for loss such as credit cards, one-to-four family owner occupied residential real estate loans and other consumer loans.
The following table details activity in the allowance for loan losses by portfolio segment for the three months ended March 31, 2015.  Allocation of a portion of the allowance to one category of loans does not preclude its availability to absorb losses in other categories.
(In thousands)		Commercial			Real			Credit			Other			Total
					Estate			Card			Consumer
											and Other
Three Months Ended March 31, 2015
Balance, beginning of period		$	6,962		$	15,161		$	5,445		$	1,460		$	29,028
Provision for loan losses			(16	)		673			654			(140	)		1,171
Charge-offs			(245	)		(293	)		(785	)		(220	)		(1,543	)
Recoveries			169			12			213			133			527
Net charge-offs			(76	)		(281	)		(572	)		(87	)		(1,016	)
Balance, March 31, 2015		$	6,870		$	15,553		$	5,527		$	1,233		$	29,183
Period-end amount allocated to:
Loans individually evaluated for impairment		$	197		$	1,809		$	13		$	91		$	2,110
Loans collectively evaluated for impairment			6,673			13,744			5,514			1,142			27,073
Balance, March 31, 2015		$	6,870		$	15,553		$	5,527		$	1,233		$	29,183
Activity in the allowance for loan losses for the three months ended March 31, 2014 was as follows:
(In thousands)		Commercial			Real			Credit			Other			Total
					Estate			Card			Consumer
											and Other
Three Months Ended March 31, 2014
Balance, beginning of period		$	3,205		$	16,885		$	5,430		$	1,922		$	27,442
Provision for loan losses			363			245			559			(259	)		908
Charge-offs			(74	)		(806	)		(816	)		(146	)		(1,842	)
Recoveries			14			69			271			121			475
Net charge-offs			(60	)		(737	)		(545	)		(25	)		(1,367	)
Balance, March 31, 2014		$	3,508		$	16,393		$	5,444		$	1,638		$	26,983
Period-end amount allocated to:
Loans individually evaluated for impairment		$	173		$	1,540		$	14		$	163		$	1,890
Loans collectively evaluated for impairment			3,335			14,853			5,430			1,475			25,093
Balance, March 31, 2014		$	3,508		$	16,393		$	5,444		$	1,638		$	26,983
Period-end amount allocated to:
Loans individually evaluated for impairment		$	185		$	1,756		$	6		$	118		$	2,065
Loans collectively evaluated for impairment			6,777			13,405			5,439			1,342			26,963
Balance, December 31, 2014		$	6,962		$	15,161		$	5,445		$	1,460		$	29,028
The Company’s recorded investment in loans, excluding loans acquired, related to each balance in the allowance for loan losses by portfolio segment on the basis of the Company’s impairment methodology was as follows:
(In thousands)		Commercial			Real			Credit			Other			Total
					Estate			Card			Consumer
											and Other
31-Mar-15
Loans individually evaluated for impairment		$	1,099		$	14,825		$	439		$	552		$	16,915
Loans collectively evaluated for impairment			428,944			1,387,476			170,974			111,071			2,098,465
Balance, end of period		$	430,043		$	1,402,301		$	171,413		$	111,623		$	2,115,380
31-Dec-14
Loans individually evaluated for impairment		$	1,026		$	12,827		$	197		$	619		$	14,669
Loans collectively evaluated for impairment			406,452			1,339,501			185,183			107,916			2,039,052
Balance, end of period		$	407,478		$	1,352,328		$	185,380		$	108,535		$	2,053,721

Note_5_Loans_Acquired

Note 5 - Loans Acquired	3 Months Ended
	Mar. 31, 2015
Loans Acquired [Abstract]
Loans Acquired [Text Block]	NOTE 5:	LOANS ACQUIRED
	During the first quarter of 2015, the Company evaluated $769.9 million of net loans ($774.8 million gross loans less $4.9 million discount) purchased in conjunction with the acquisition of Liberty, described in Note 2, Acquisitions, in accordance with the provisions of ASC Topic 310-20, Nonrefundable Fees and Other Costs.  The fair value discount is being accreted into interest income over the weighted average life of the loans using a constant yield method.  These loans are not considered to be impaired loans. The Company evaluated the remaining $10.7 million of net loans ($15.7 million gross loans less $5.0 million discount) purchased in conjunction with the acquisition of Liberty for impairment in accordance with the provisions of ASC Topic 310-30, Loans and Debt Securities Acquired with Deteriorated Credit Quality.  Purchased loans are considered impaired if there is evidence of credit deterioration since origination and if it is probable that not all contractually required payments will be collected.
	Also during the first quarter of 2015, the Company evaluated $1.13 billion of net loans ($1.15 billion gross loans less $23.7 million discount) purchased in conjunction with the acquisition of Community First, described in Note 2, Acquisitions, in accordance with the provisions of ASC Topic 310-20.  The fair value discount is being accreted into interest income over the weighted average life of the loans using a constant yield method.  These loans are not considered to be impaired loans. The Company evaluated the remaining $7.0 million of net loans ($10.1 million gross loans less $3.1 million discount) purchased in conjunction with the acquisition of Community First for impairment in accordance with the provisions of ASC Topic 310-30.
	The Company evaluated all of the loans acquired during 2013 – 2014 using the same methodologies as in the 2015 acquisitions.
	The Company evaluated all of the loans purchased in conjunction with its previous FDIC-assisted transactions in accordance with the provisions of ASC Topic 310-30.  All loans acquired in the FDIC transactions, both covered and not covered, were deemed to be impaired loans.  All loans acquired, whether or not covered by FDIC loss share agreements, are considered impaired if there is evidence of credit deterioration since origination and if it is probable that not all contractually required payments will be collected.  See Note 2, Acquisitions, for further discussion of loans acquired.
	The following table reflects the carrying value of all acquired loans as of March 31, 2015 and December 31, 2014:
			Loans Acquired
	(in thousands)		March 31,			December 31,
			2015			2014
	Consumer:
	Other consumer		$	131,168		$	8,514
	Total consumer			131,168			8,514
	Real estate:
	Construction			158,101			46,911
	Single family residential			723,658			175,970
	Other commercial			1,162,870			390,877
	Total real estate			2,044,629			613,758
	Commercial:
	Commercial			314,723			56,134
	Agricultural			23,400			4,507
	Total commercial			338,123			60,641
	Other			6.988			60,641
	Total loans acquired (1)		$	2.520.908		$	682,913
	(1)	Loans acquired include $102.5 million and $106.9 million (each net of $1.0 million allowance) of loans covered by FDIC loss share agreements at March 31, 2015 and December 31, 2014, respectively.
	Nonaccrual acquired loans, excluding loans covered by loss share accounted for under ASC Topic 310-30, segregated by class of loans, are as follows (see Note 4, Loans an Allowance for Loan Losses, for discussion of nonaccrual loans):
	(In thousands)		March 31,			December 31,
			2015			2014
	Consumer:
	Other consumer		$	22		$	29
	Total consumer			22			29
	Real estate:
	Construction			336			105
	Single family residential			1,452			2,018
	Other commercial			2,046			271
	Total real estate			3,834			2,394
	Commercial:
	Commercial			591			291
	Agricultural			126			3
	Total commercial			717			294
	Total		$	4,573		$	2,717
	An age analysis of past due acquired loans, excluding loans covered by loss share, segregated by class of loans, is as follows (see Note 4, Loans an Allowance for Loan Losses, for discussion of past due loans):
	(In thousands)		Gross			90 Days			Total			Current			Total		90 Days
			30-89 Days			or More			Past Due						Loans		Past Due &
			Past Due			Past Due											Accruing
	31-Mar-15
	Consumer:
	Other consumer		$	296		$	91		$	387		$	130,779		$	131,166	$	11
	Total consumer			296			91			387			130,779			131,166		11
	Real estate:
	Construction			604			111			715			149,015			149,730		--
	Single family residential			5,179			4,522			9,701			679,850			689,551		1,552
	Other commercial			5,409			8,469			13,878			1,097,724			1,111,601		--
	Total real estate			11,192			13,102			24,294			1,926,588			1,950,882		1,552
	Commercial:
	Commercial			2,509			1,221			3,790			303,172			306,902		186
	Agricultural			1,089			--			1,089			21,447			22,536		--
	Total commercial			3,598			1,221			4,819			324,619			329,438		186
	Other			--			--			--			6,954			6,954		--
	Total		$	15,086		$	14,414		$	29,500		$	2,388,940		$	2,418,440	$	1,749
	31-Dec-14
	Consumer:
	Other consumer		$	70		$	34		$	104		$	8,407		$	8,511	$	5
	Total consumer			70			34			104			8,407			8,511		5
	Real estate:
Construction			292			105			397			36,450			36,847		--
Single family residential			3,804			2,906			6,710			138,383			145,093		594
Other commercial			1,415			5,994			7,409			326,759			334,168		--
Total real estate			5,511			9,005			14,516			501,592			516,108		594
Commercial:
Commercial			110			421			531			46,730			47,261		--
Agricultural			--			--			--			4,100			4,100		--
Total commercial			110			421			531			51,360			51,361		--
Total		$	5,691		$	9,460		$	15,151		$	560,829		$	575,980	$	599
The following table presents a summary of acquired loans, excluding loans covered by loss share, by credit risk rating, segregated by class of loans (see Note 4, Loans an Allowance for Loan Losses, for discussion of loan risk rating).
(In thousands)		Risk Rate			Risk Rate			Risk Rate			Risk Rate			Risk Rate		Total
		4-Jan			5			6			7			8
31-Mar-15
Consumer:
Other consumer		$	130,750		$	--		$	416		$	--		$	--	$	131,166
Total consumer			130,750			--			416			--			--		131,166
Real estate:
Construction			139,843			2,602			7,285			--			--		149,730
Single family residential			666,400			10,289			10,720			2,114			28		689,551
Other commercial			1,074,127			10,812			26,662			--			--		1,111,60
Total real estate			1,880,370			23,703			44,667			2,114			28		1,950,882
Commercial:
Commercial			294,464			3,135			9,258			45			--		306,902
Agricultural			20,489			157			1,890			--			--		22,536
Total commercial			314,953			3,292			11,148			45			--		329,438
Other			6,906			48			--			--			--		6,954
Total		$	2,332,979		$	27,043		$	56,231		$	2,159		$	28	$	2,418,440
31-Dec-14
Consumer:
Other consumer		$	8,479		$	--		$	32		$	--		$	--	$	8,511
Total consumer			8,479			--			32			--			--		8,511
Real estate:
Construction			27,430			78			9,339			--			--		36,847
Single family residential			135,240			683			7,311			1,854			5		145,093
Other commercial			317,965			605			15,598			--			--		334,168
Total real estate			480,635			1,366			32,248			1,854			5		516,108
Commercial:
Commercial			43,585			69			3,607			--			--		47,261
Agricultural			3,030			-			1,070			--			--		4,100
Total commercial			46,615			69			4,677			--			--		51,361
Total		$	535,729		$	1,435		$	36,957		$	1,854		$	5	$	575,980
Loans acquired as a part of the Liberty, Community First, Metropolitan and Delta Trust transactions were individually evaluated and recorded at estimated fair value, including estimated credit losses, at the time of acquisition.  The loans acquired in FDIC assisted transactions were grouped into pools based on common risk characteristics and the pools were recorded at their estimated fair values, which incorporated estimated credit losses at the acquisition date.  These loans and loan pools are systematically reviewed by the Company to determine the risk of losses that may exceed those identified at the time of the acquisition.  Techniques used in determining risk of loss are similar to the Company’s legacy loan portfolio, with most focus being placed on those loans which include the larger loan relationships and those loans which exhibit higher risk characteristics.
The following is a summary of the non-covered loans acquired in the Liberty acquisition on February 27, 2015, as of the date of acquisition.
(in thousands)		Not Impaired			Impaired
Contractually required principal and interest at acquisition		$	774,777		$	15,716
Non-accretable difference (expected losses and foregone interest)			--			(4,978	)
Cash flows expected to be collected at acquisition			774,777			10,738
Accretable yield			(4,869	)		12
Basis in acquired loans at acquisition		$	769,908		$	10,750
The following is a summary of the non-covered loans acquired in the Community First acquisition on February 27, 2015, as of the date of acquisition.
(in thousands)		Not Impaired			Impaired
Contractually required principal and interest at acquisition		$	1,153,255		$	10,143
Non-accretable difference (expected losses and foregone interest)			--			(3,247	)
Cash flows expected to be collected at acquisition			1,153,255			6,896
Accretable yield			(23,712	)		104
Basis in acquired loans at acquisition		$	1,129,543		$	7,000
The amount of the estimated cash flows expected to be received from the acquired loan pools and purchased credit impaired loans in excess of the fair values recorded for the loan pools and the purchased credit impaired loans is referred to as the accretable yield.  The accretable yield is recognized as interest income over the estimated lives of the loans.  Each quarter, the Company estimates the cash flows expected to be collected from the acquired loan pools and purchased credit impaired loans, and adjustments may or may not be required.  This has resulted in increased interest income that is spread on a level-yield basis over the remaining expected lives of the loans or loan pools. For those loan pools covered by FDIC loss share, the increases in expected cash flows also reduce the amount of expected reimbursements under the loss sharing agreements with the FDIC, which are recorded as indemnification assets.  The estimated adjustments to the indemnification assets are amortized on a level-yield basis over the remainder of the loss sharing agreements or the remaining expected lives of the loan pools, whichever is shorter.
The impact of the adjustments on the Company’s financial results for the three months ended March 31, 2015 and 2014 is shown below:
		Three Months Ended
		March 31,
(In thousands)		2015			2014
Impact on net interest income		$	6,102		$	7,391
Non-interest income			(2,745	)		(7,441	)
Net impact to pre-tax income			3,357			(50	)
Net impact, net of taxes		$	2,040		$	(30	)
These adjustments will be recognized over the remaining lives of the loans for purchased credit impaired loans.  For FDIC acquisition loans, the adjustments will be recognized over the remaining lives of the loan pools and, for covered loans, over the remainder of the loss sharing agreements, respectively.  The current estimate of the remaining accretable yield adjustment that will positively impact interest income is $14.3 million and the remaining adjustment to the indemnification assets that will reduce non-interest income is $6.6 million.  Of the remaining adjustments, the Company expects to recognize $6.2 million of interest income and a $5.6 million reduction of non-interest income, for a net reduction to pre-tax income of approximately $0.6 million during the remainder of 2015.  The accretable yield adjustments recorded in future periods will change as the Company continues to evaluate expected cash flows from the acquired loan pools and purchased credit impaired loans..
Changes in the carrying amount of the accretable yield for all purchased impaired loans were as follows for the three months ended March 31, 2015 and 2014.
		Three Months Ended						Three Months Ended
		31-Mar-15						31-Mar-14
(In thousands)		Accretable			Carrying			Accretable			Carrying
		Yield			Amount of			Yield			Amount of
					Loans						Loans
Beginning balance		$	20,635		$	169,098		$	41,385		$	234,785
Additions			(116	)		17,750			--			--
Accretable yield adjustments			3,074			--			1,483			--
Accretion			(6,367	)		6,367			(9,326	)		9,326
Payments and other reductions, net			--			(15,524	)		--			(25,579	)
Balance, ending		$	17,226		$	177,691		$	33,542		$	218,532
Purchased impaired loans on the FDIC-assisted transactions are evaluated in pools with similar characteristics.  Because some pools evaluated by the Company, covered by loss share agreements, were determined to have experienced impairment in the estimated credit quality or cash flows during 2014, the Company recorded a provision to establish a $1.0 million allowance for loan losses for covered purchased impaired loans.  For Liberty, Community First, Metropolitan and Delta Trust, purchased impaired loans are evaluated on an individual borrower basis.  No loans, not covered by loss share, evaluated by the Company were determined to have experienced further impairment.  Therefore, there were no allowances for loan losses related to the non-covered purchased impaired loans at March 31, 2015 or December 31, 2014.
The purchase and assumption agreements for the FDIC-assisted acquisitions allow for the FDIC to recover a portion of the funds previously paid out under the indemnification agreement in the event losses fail to reach the expected loss level under a claw back provision (“true-up provision”).  The amount of the true-up provision for each acquisition is measured and recorded at Day 1 fair values.  It is calculated as the difference between management’s estimated losses on covered loans and covered foreclosed assets and the loss threshold contained in each loss share agreement, multiplied by the applicable clawback provisions contained in each loss share agreement.  This true-up amount, which is payable to the FDIC upon termination of the applicable loss share agreement, is then discounted back to net present value.  To the extent that actual losses on covered loans and covered foreclosed assets are less than estimated losses, the applicable true-up provision payable to the FDIC upon termination of the loss share agreements will increase.  To the extent that actual losses on covered loans and covered foreclosed assets are more than estimated losses, the applicable true-up provision payable to the FDIC upon termination of the loss share agreements will decrease.
The following table presents a summary of the changes in the FDIC true-up provision for the three months ended March 31, 2015 and 2014.
		Three Months Ended
		March 31,
(In thousands)		2015			2014
Beginning balance		$	8,308		$	6,768
Amortization expense			40			43
Adjustments related to changes in expected losses			254			442
Balance, ending		$	8,602		$	7,253

Note_6_Goodwill_and_Other_Inta

Note 6 - Goodwill and Other Intangible Assets	3 Months Ended
	Mar. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets Disclosure [Text Block]	NOTE 6:	GOODWILL AND OTHER INTANGIBLE ASSETS
	Goodwill is tested annually, or more often than annually, if circumstances warrant, for impairment.  If the implied fair value of goodwill is lower than its carrying amount, goodwill impairment is indicated, and goodwill is written down to its implied fair value.  Subsequent increases in goodwill value are not recognized in the financial statements.  Goodwill totaled $314.6 million at March 31, 2015 and $108.1 million at December 31, 2014.  The Company recorded $94.9 million and $111.6 of goodwill during the three months ended March 31, 2015 as a result of its acquisitions of Community First and Liberty, respectively.  Goodwill impairment was neither indicated nor recorded during the three months ended March 31, 2015 or the year ended December 31, 2014.
	Core deposit premiums are amortized over a ten year period and are periodically evaluated, at least annually, as to the recoverability of their carrying value.  Core deposit premiums of $11.3 million and $14.6 million were recorded during the first quarter of 2015 as part of the Community First and Liberty acquisitions, respectively.
	The Delta Trust acquisition on August 31, 2014 included some significant lines of business related to investments, trust and insurance, for which the Company recorded $5.1 million of intangible assets.  The Company also recorded $0.4 million of intangible assets during the three months ended March 31, 2015 related to a line of insurance business as part of the Community First acquisition.  These intangible assets are being amortized over various periods ranging from 10 to 15 years.
	On September 30, 2013, the Company acquired a credit card portfolio and recorded Purchased Credit Card Relationships (“PCCR’s”) of $2.1 million.  This intangible asset is being amortized over a five year period.
	The Company’s goodwill and other intangibles (carrying basis and accumulated amortization) at March 31, 2015 and December 31, 2014, were as follows:
	(In thousands)		March 31,			December 31,
			2015			2014
	Goodwill		$	314,643		$	108,095
	Core deposit premiums:
	Gross carrying amount			44,030			18,318
	Accumulated amortization			(2,939	)		(2,386	)
	Core deposit premiums, net			41,091			15,932
	Purchased credit card relationships:
	Gross carrying amount			2,068			2,068
	Accumulated amortization			(621	)		(517	)
	Purchased credit card relationships, net			1,447			1,551
	Books of business intangible:
	Gross carrying amount			5,560			5,140
	Accumulated amortization			(211	)		(97	)
	Books of business intangible, net			5,349			5,043
	Other intangible assets, net			47,887			22,526
	Total goodwill and other intangible assets		$	362,530		$	130,621
	Core deposit premium amortization expense recorded for the three months ended March 31, 2015 and 2014, was $670,000 and $350,000, respectively.  The Company’s estimated remaining amortization expense on core deposit premiums as of March 31, 2015 is as follows:
	(In thousands)	Year		Amortization
				Expense
		2015		$	3,302
		2016			4,400
		2017			4,400
		2018			4,400
		2019			4,400
		Thereafter			20,189
		Total		$	41,091
	PCCR amortization expense recorded for the three months ended March 31, 2015 and 2014 was $103,000.  The Company’s estimated remaining amortization expense on PCCR’s as of March 31, 2015 is as follows:
	(In thousands)	Year		Amortization
				Expense
		2015		$	310
		2016			414
		2017			414
		2018			309
		Total		$	1,447
	Book of business amortization expense recorded for the three months ended March 31, 2015 was $120,000.  There was no book of business amortization expense recorded for the three months ended March 31, 2014.  The Company’s estimated remaining amortization expense on the books of business as of March 31, 2015 is as follows:
	(In thousands)	Year		Amortization
				Expense
		2015		$	300
		2016			427
		2017			427
		2018			427
		2019			427
		Thereafter			3,341
		Total		$	5,349

Note_7_Time_Deposits

Note 7 - Time Deposits	3 Months Ended
	Mar. 31, 2015
Disclosure Text Block [Abstract]
Deposit Liabilities Disclosures [Text Block]	NOTE 7:	TIME DEPOSITS
	Time deposits include approximately $464,270,000 and $434,297,000 of certificates of deposit of $100,000 or more at March 31, 2015, and December 31, 2014, respectively.

Note_8_Income_Taxes

Note 8 - Income Taxes	3 Months Ended
	Mar. 31, 2015
Income Tax Disclosure [Abstract]
Income Tax Disclosure [Text Block]	NOTE 8:	INCOME TAXES
	The provision for income taxes is comprised of the following components:
			March 31,			March 31,
	(In thousands)		2015			2014
	Income taxes currently payable		$	5,760		$	3,599
	Deferred income taxes			(1,578	)		(2,667	)
	Provision for income taxes		$	4,182		$	932
	The tax effects of temporary differences related to deferred taxes shown on the balance sheets were:
	(In thousands)		March 31,			December 31,
			2015			2014
	Deferred tax assets:
	Loans acquired		$	31,413		$	16,925
	FDIC true-up liability			2,797			2,792
	Allowance for loan losses			11,444			11,749
	Valuation of foreclosed assets			15,420			14,167
	Tax NOLs from acquisition			11,819			11,819
	Deferred compensation payable			2,533			1,536
	Vacation compensation			1,630			1,456
	Accumulated depreciation			--			1,937
	Loan interest			2,099			1,693
	Accrued pension and profit sharing			1,793			1,793
	Accrued equity and other compensation			4,814			3,356
	Acquired securities			2,083			2,568
	Accrued merger related costs			2,730			2,464
	Basis difference in partnership investments			812			617
	Unrealized loss on available-for-sale securities			--			862
	Other			3,173			1,666
	Gross deferred tax assets			94,560			77,400
	Deferred tax liabilities:
	Goodwill and other intangible amortization			(25,780	)		(16,953	)
	FDIC acquired assets			(1,754	)		(4,377	)
	Deferred loan fee income and expenses, net			(1,663	)		(1,515	)
	FHLB stock dividends			(2,227	)		(1,160	)
	Limitations under IRC Sec 382			(10,839	)		(11,169	)
	Prepayment liabilities			(1,979	)		(1,141	)
	Accumulated depreciation			(402	)		--
	Unrealized gain on available-for-sale securities			(1,197	)		--
	Other			(545	)		(337	)
	Gross deferred tax liabilities			(46,386	)		(36,652	)
	Net deferred tax asset, included in other assets		$	48,174		$	40,748
	A reconciliation of income tax expense at the statutory rate to the Company's actual income tax expense is shown below:
	(In thousands)		March 31,			March 31,
			2015			2014
	Computed at the statutory rate (35%)		$	4,504		$	1,849
	Increase (decrease) in taxes resulting from:
	State income taxes, net of federal tax benefit			308			47
	Tax exempt interest income			(1,024	)		(933	)
	Tax exempt earnings on BOLI			(152	)		(115	)
	Other differences, net			546			84
	Actual tax provision		$	4,182		$	932
	The Company follows ASC Topic 740, Income Taxes, which prescribes a recognition threshold and a measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return.  Benefits from tax positions should be recognized in the financial statements only when it is more likely than not that the tax position will be sustained upon examination by the appropriate taxing authority that would have full knowledge of all relevant information.  A tax position that meets the more-likely-than-not recognition threshold is measured at the largest amount of benefit that is greater than fifty percent likely of being realized upon ultimate settlement.  Tax positions that previously failed to meet the more-likely-than-not recognition threshold should be recognized in the first subsequent financial reporting period in which that threshold is met.  Previously recognized tax positions that no longer meet the more-likely-than-not recognition threshold should be derecognized in the first subsequent financial reporting period in which that threshold is no longer met.  ASC Topic 740 also provides guidance on the accounting for and disclosure of unrecognized tax benefits, interest and penalties.
	The amount of unrecognized tax benefits may increase or decrease in the future for various reasons including adding amounts for current tax year positions, expiration of open income tax returns due to the statutes of limitation, changes in management’s judgment about the level of uncertainty, status of examinations, litigation and legislative activity and the addition or elimination of uncertain tax positions.
	The Company files income tax returns in the U.S. federal jurisdiction.  The Company’s U.S. federal income tax returns are open and subject to examinations from the 2011 tax year and forward.  The Company’s various state income tax returns are generally open from the 2008 and later tax return years based on individual state statute of limitations.

Note_9_Other_Borrowings_and_Su

Note 9 - Other Borrowings and Subordinated Debentures	3 Months Ended
	Mar. 31, 2015
Debt Disclosure [Abstract]
Debt Disclosure [Text Block]	NOTE 9:	OTHER BORROWINGS AND SUBORDINATED DEBENTURES
	Debt at March 31, 2015 and December 31, 2014 consisted of the following components:
	(In thousands)		31-Mar-15			December 31,
						2014
	Other Borrowings
	FHLB advances, due 2015 to 2033, 0.35% to 7.38% secured by residential real estate loans		$	241,960		$	71,582
	Notes payable, due 04/30/2015 to 12/31/2016, 3.25%, floating rate, unsecured			43,100			43,100
				285,060			114,682
	Subordinated Debentures
	Trust preferred securities, due 12/30/2033, floating rate of 2.80% above the three month LIBOR rate, reset quarterly, callable without penalty			20,620			20,620
	Trust preferred securities, due 6/30/2035, floating rate of 1.75% above the three month LIBOR rate, reset quarterly, callable without penalty			11,444			-
	Trust preferred securities, due 9/15/2037, floating rate of 1.37% above the three month LIBOR rate, reset quarterly			10,310			-
	Trust preferred securities, due 12/3/2033, floating rate of 2.88% above the three month LIBOR rate, reset quarterly, callable without penalty			5,155			-
	Trust preferred securities, due 12/13/2034, floating rate of 2.00% above the three month LIBOR rate, reset quarterly, callable without penalty			5,155			-
	Trust preferred securities, due 6/6/2037, floating rate of 1.57% above the three month LIBOR rate, reset quarterly, callable without penalty			10,310			-
				62,994			20,620
	Total other borrowings and subordinated debentures		$	348,054		$	135,302
	During the fourth quarter of 2013, the Company borrowed $46.0 million from correspondent banks to partially fund the acquisition of Metropolitan.  This debt is unsecured and is scheduled to be repaid in three years or less, by December 31, 2016.
	At March 31, 2015, the Company had $40.0 million of Federal Home Loan Bank (“FHLB”) advances with original maturities of one year or less.
	The Company had total FHLB advances of $242.0 million at March 31, 2015, with approximately $821.7 million of additional advances available from the FHLB.  The FHLB advances are secured by mortgage loans and investment securities totaling approximately $919.5 million at March 31, 2015.
	The trust preferred securities are tax-advantaged issues that qualify for Tier 1 capital treatment. Distributions on these securities are included in interest expense on long-term debt. Each of the trusts is a statutory business trust organized for the sole purpose of issuing trust securities and investing the proceeds thereof in junior subordinated debentures of the Company, the sole asset of each trust. The preferred securities of each trust represent preferred beneficial interests in the assets of the respective trusts and are subject to mandatory redemption upon payment of the junior subordinated debentures held by the trust.  The common securities of each trust are wholly-owned by the Company. Each trust’s ability to pay amounts due on the trust preferred securities is solely dependent upon the Company making payment on the related junior subordinated debentures. The Company’s obligations under the junior subordinated securities and other relevant trust agreements, in aggregate, constitute a full and unconditional guarantee by the Company of each respective trust’s obligations under the trust securities issued by each respective trust.
	Aggregate annual maturities of long-term debt at March 31, 2015, are:
	(In thousands)	Year		Annual
				Maturities
		2015		$	149,016
		2016			38,348
		2017			75,417
		2018			6,558
		2019			2,743
		Thereafter			75,972
		Total		$	348,054

Note_10_Contingent_Liabilities

Note 10 - Contingent Liabilities	3 Months Ended
	Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies Disclosure [Text Block]	NOTE 10:	CONTINGENT LIABILITIES
	The Company and/or its subsidiaries have various unrelated legal proceedings, most of which involve loan foreclosure activity pending, which, in the aggregate, are not expected to have a material adverse effect on the financial position of the Company and its subsidiaries.

Note_11_Common_Stock

Note 11 - Common Stock	3 Months Ended
	Mar. 31, 2015
Capital Stock Disclosure [Abstract]
Capital Stock Disclosure [Text Block]	NOTE 11:	COMMON STOCK
	During 2012, the Company announced the adoption by the Board of Directors of a new stock repurchase program.  The program authorizes the repurchase of up to 850,000 additional shares of Class A common stock, or approximately 5% of the shares outstanding at that time.  The shares are to be purchased from time to time at prevailing market prices, through open market or unsolicited negotiated transactions, depending upon market conditions.  Under the repurchase program, there is no time limit for the stock repurchases, nor is there a minimum number of shares that the Company intends to repurchase.  The Company intends to use the repurchased shares to satisfy stock option exercises, payment of future stock awards and dividends and general corporate purposes.  The Company suspended its stock repurchases in August of 2013, with 154,136 shares remaining available for repurchase under the program.
	On March 4, 2014 the Company filed a shelf registration statement with the Securities and Exchange Commission (“SEC”).  Subsequently, on June 18, 2014 the Company filed Amendment No. 1 to the shelf registration statement.  After becoming effective, the shelf registration statement allows the Company to raise capital from time to time, up to an aggregate of $300 million, through the sale of common stock, preferred stock, stock warrants, stock rights or a combination thereof, subject to market conditions.  Specific terms and prices are determined at the time of any offering under a separate prospectus supplement that the Company is required to file with the SEC at the time of the specific offering.

Note_12_Undivided_Profits

Note 12 - Undivided Profits	3 Months Ended
	Mar. 31, 2015
Disclosure of Restrictions on Dividends, Loans and Advances Disclosure [Abstract]
Restrictions on Dividends, Loans and Advances [Text Block]	NOTE 12:	UNDIVIDED PROFITS
	The Company’s subsidiaries are subject to a legal limitation on dividends that can be paid to the parent company without prior approval of the applicable regulatory agencies.  The approval of the Comptroller of the Currency is required, if the total of all dividends declared by a national bank in any calendar year exceeds the total of its net profits, as defined, for that year combined with its retained net profits of the preceding two years.  At March 31, 2015, the Company’s subsidiary banks had approximately $8.1 million available for payment of dividends to the Company, without prior regulatory approval.
	The risk-based capital guidelines of the Federal Reserve Board and the Office of the Comptroller of the Currency include the definitions for (1) a well-capitalized institution, (2) an adequately-capitalized institution, and (3) an undercapitalized institution.  Under the newly adopted Basel III Rules, the criteria for a well-capitalized institution are: a 5% "Tier l leverage capital" ratio, an 8% "Tier 1 risk-based capital" ratio, 10% "total risk-based capital" ratio; and a 6.50% “common equity Tier1 (“CETI”) ratio.  As of March 31, 2015, The Company’s subsidiary banks met the capital standards for a well-capitalized institution.  The Company's CET1atio was 13.57% at March 31, 2015.

Note_13_Stock_Based_Compensati

Note 13 - Stock Based Compensation	3 Months Ended
	Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]	NOTE 13:	STOCK BASED COMPENSATION
	The Company’s Board of Directors has adopted various stock compensation plans.  The plans provide for the grant of incentive stock options, nonqualified stock options, stock appreciation rights, and bonus stock awards.  Pursuant to the plans, shares are reserved for future issuance by the Company upon the exercise of stock options or awarding of bonus shares granted to directors, officers and other key employees.
	The table below summarizes the transactions under the Company's active stock compensation plans for the three months ended March 31, 2015:
			Stock Options						Non-Vested Stock
			Outstanding						Awards Outstanding
			Number			Weighted			Number			Weighted
			of			Average			of			Average
			Shares			Exercise			Shares			Grant-Date
						Price						Fair-Value
	Balance, January 1, 2015			119,690		$	27.72			226,932		$	31.88
	Granted			113,695			42.76			57,225			41.02
	Stock Options Exercised			(10,410	)		26.9			--			--
	Stock Awards Vested			--			--			(79,984	)		40.31
	Forfeited/Expired			--			--			(9,500	)		39.56
	Balance, March 31, 2015			222,975		$	35.42			194,673		$	30.73
	Exercisable, March 31, 2015			109,280		$	27.79
	The following table summarizes information about stock options under the plans outstanding at March 31, 2015:
					Options Outstanding								Options Exercisable
	Range of				Number		Weighted			Weighted			Number	Weighted
	Exercise Prices				of Shares		Average			Average			of Shares	Average
							Remaining			Exercise				Exercise
							Contractual			Price				Price
							Life (Years)
	$24.50	-	$24.50		15,250			0.15		$	24.5		15,250	$	24.5
	26.19	-	27.67		30,600			1.13			26.21		30,600		26.21
	28.42	-	28.42		32,300			2.16			28.42		32,300		28.42
	30.31	-	30.31		31,130			3.16			30.31		31,130		30.31
	40.57	-	40.57		48,690			9.75			40.57		--		--
	44.4	-	44.4		65,005			9.98			44.4		--		--
	Total stock-based compensation expense was $485,000 and $361,000 during the three months ended March 31, 2015 and 2014, respectively.  Stock-based compensation expense is recognized ratably over the requisite service period for all stock-based awards.  There was $901,000 of unrecognized stock-based compensation expense related to stock options at March 31, 2015.  There was no unrecognized stock-based compensation expense related to stock options at March 31, 2014.
	The intrinsic value of stock options outstanding and stock options exercisable at March 31, 2015 was $2,240,000 and $1,932,000.  Intrinsic value represents the difference between the Company’s closing stock price on the last trading day of the period, which was $45.47 as of March 31, 2015, and the exercise price multiplied by the number of options outstanding and exercisable at a price below that closing price.  The total intrinsic value of stock options exercised during the three months ended March 31, 2015 and March 31, 2014, was $193,000 and $188,000, respectively.

Note_14_Additional_Cash_Flow_I

Note 14 - Additional Cash Flow Information	3 Months Ended
	Mar. 31, 2015
Supplemental Cash Flow Elements [Abstract]
Cash Flow, Supplemental Disclosures [Text Block]	NOTE 14:	ADDITIONAL CASH FLOW INFORMATION
	The following is a summary of the Company’s additional cash flow information during the three months ended:
			Three Months Ended
			March 31,
	(In thousands)		2015		2014
	Interest paid		$	3,372	$	3,447
	Income taxes paid			7,274		1,266
	Transfers of loans not covered by FDIC loss share to foreclosed assets held for sale			2,774		1,386
	Transfers of loans acquired, covered by FDIC loss share, to foreclosed assets covered by FDIC loss share			435		520
	Transfers of premises held for sale to foreclosed assets held for sale			6,126		--

Note_15_Other_Operating_Expens

Note 15 - Other Operating Expenses	3 Months Ended
	Mar. 31, 2015
Other Income and Expenses [Abstract]
Other Income and Other Expense Disclosure [Text Block]	NOTE 15:	OTHER OPERATING EXPENSES
	Other operating expenses consist of the following:
			Three Months Ended
			March 31,
	(In thousands)		2015		2014
	Professional services		$	1,804	$	1,354
	Postage			933		915
	Telephone			861		701
	Credit card expense			1,989		1,706
	Operating supplies			454		516
	Amortization of intangibles			899		453
	Branch right sizing expense			35		3,878
	Other expense			5,131		3,847
	Total other operating expenses		$	12,106	$	13,370

Note_16_Certain_Transactions

Note 16 - Certain Transactions	3 Months Ended
	Mar. 31, 2015
Related Party Transactions [Abstract]
Related Party Transactions Disclosure [Text Block]	NOTE 16:	CERTAIN TRANSACTIONS
	From time to time the Company and its subsidiaries have made loans and other extensions of credit to directors, officers, their associates and members of their immediate families.  From time to time directors, officers and their associates and members of their immediate families have placed deposits with the Company’s subsidiary, Simmons Bank.  Such loans, other extensions of credit and deposits were made in the ordinary course of business, on substantially the same terms (including interest rates and collateral) as those prevailing at the time for comparable transactions with other persons not related to the lender and did not involve more than normal risk of collectability or present other unfavorable features.

Note_17_Commitments_and_Credit

Note 17 - Commitments and Credit Risk	3 Months Ended
	Mar. 31, 2015
Disclosure Text Block Supplement [Abstract]
Commitments Disclosure [Text Block]	NOTE 17:	COMMITMENTS AND CREDIT RISK
	The Company grants agri-business, commercial and residential loans to customers throughout Arkansas, Kansas and Missouri, along with credit card loans to customers throughout the United States.  Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract.  Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee.  Since a portion of the commitments may expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements.  Each customer's creditworthiness is evaluated on a case-by-case basis.  The amount of collateral obtained, if deemed necessary, is based on management's credit evaluation of the counterparty.  Collateral held varies, but may include accounts receivable, inventory, property, plant and equipment, commercial real estate and residential real estate.
	At March 31, 2015, the Company had outstanding commitments to extend credit aggregating approximately $493,685,000 and $760,230,000 for credit card commitments and other loan commitments.  At December 31, 2014, the Company had outstanding commitments to extend credit aggregating approximately $480,653,000 and $439,053,000 for credit card commitments and other loan commitments.
	Standby letters of credit are conditional commitments issued by the Company, to guarantee the performance of a customer to a third party.  Those guarantees are primarily issued to support public and private borrowing arrangements, including commercial paper, bond financing, and similar transactions.  The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loans to customers.  The Company had total outstanding letters of credit amounting to $27,073,000 and $16,217,000 at March 31, 2015, and December 31, 2014, respectively, with terms ranging from 9 months to 15 years.  At March 31, 2015 and December 31, 2014, the Company’s deferred revenue under standby letter of credit agreements was approximately $5,000 and $13,000, respectively.

Note_18_Preferred_Stock

Note 18 - Preferred Stock	3 Months Ended
	Mar. 31, 2015
Disclosure Text Block Supplement [Abstract]
Preferred Stock [Text Block]	NOTE 18:	PREFERRED STOCK
	On February 27, 2015, as part of the acquisition of Community First, the Company issued 30,852 shares of Senior Non-Cumulative Perpetual Preferred Stock, Series A (“Simmons Series A Preferred Stock”) in exchange for the outstanding shares of Community First Senior Non-Cumulative Perpetual Preferred Stock, Series C (“Community First Series C Preferred Stock”).  The preferred stock is held by the United States Department of the Treasury (“Treasury”) as the Community First Series C Preferred Stock was issued when Community First entered into a Small Business Lending Fund Securities Purchase Agreement with the Treasury.  The Simmons Series A Preferred Stock qualifies as Tier 1 capital and will pay quarterly dividends.  The rate will remain fixed at 1% through February 18, 2016, at which time it will convert to a fixed rate of 9%. The Company plans to redeem the Simmons Series A Preferred Stock in the first quarter of 2016.

Note_19_Fair_Value_Measurement

Note 19 - Fair Value Measurements	3 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value Disclosures [Text Block]	NOTE 19:	FAIR VALUE MEASUREMENTS
	ASC Topic 820, Fair Value Measurements defines fair value, establishes a framework for measuring fair value and expands disclosures about fair value measurements.
	ASC Topic 820 defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date.  The guidance also establishes a fair value hierarchy that requires the use of observable inputs and minimizes the use of unobservable inputs when measuring fair value.  Topic 820 describes three levels of inputs that may be used to measure fair value:
		·	Level 1 Inputs – Quoted prices in active markets for identical assets or liabilities.
		·	Level 2 Inputs – Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities in active markets; quoted prices for similar assets or liabilities in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.
		·	Level 3 Inputs – Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.
	In general, fair value is based upon quoted market prices, where available.  If such quoted market prices are not available, fair value is based upon internally developed models that primarily use, as inputs, observable market-based parameters.  Valuation adjustments may be made to ensure that financial instruments are recorded at fair value.  These adjustments may include amounts to reflect counterparty credit quality and the Company’s creditworthiness, among other things, as well as unobservable parameters.  Any such valuation adjustments are applied consistently over time.  The Company’s valuation methodologies may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values.  While management believes the Company’s valuation methodologies are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different estimate of fair value at the reporting date.  Furthermore, the reported fair value amounts have not been comprehensively revalued since the presentation dates, and therefore, estimates of fair value after the balance sheet date may differ significantly from the amounts presented herein.  A more detailed description of the valuation methodologies used for assets and liabilities measured at fair value, as well as the general classification of such instruments pursuant to the valuation hierarchy, is set forth below.
	Following is a description of the inputs and valuation methodologies used for assets measured at fair value on a recurring basis and recognized in the accompanying consolidated balance sheets, as well as the general classification of such assets pursuant to the valuation hierarchy.  There have been no significant changes in valuation techniques during the periods ended June 30, 2014 and 2013.
	Available-for-sale securities – Where quoted market prices are available in an active market, securities are classified within Level 1 of the valuation hierarchy.  Level 1 securities would include highly liquid government bonds, mortgage products and exchange traded equities.  Other securities classified as available-for-sale are reported at fair value utilizing Level 2 inputs.  For these securities, the Company obtains fair value measurements from an independent pricing service.  The fair value measurements consider observable data that may include dealer quotes, market spreads, cash flows, the U.S. Treasury yield curve, live trading levels, trade execution data, market consensus prepayment speeds, credit information and the security’s terms and conditions, among other things. In order to ensure the fair values are consistent with ASC Topic 820, we periodically check the fair values by comparing them to another pricing source, such as Bloomberg.  The availability of pricing confirms Level 2 classification in the fair value hierarchy.  The third-party pricing service is subject to an annual review of internal controls (SSAE 16), which is made available to us for our review. In certain cases where Level 1 or Level 2 inputs are not available, securities are classified within Level 3 of the hierarchy. The Company’s investment in a government money market mutual fund (the “AIM Fund”) is reported at fair value utilizing Level 1 inputs.  The remainder of the Company's available-for-sale securities are reported at fair value utilizing Level 2 inputs.
	Assets held in trading accounts – The Company’s trading account investment in the AIM Fund is reported at fair value utilizing Level 1 inputs.  The remainder of the Company's assets held in trading accounts are reported at fair value utilizing Level 2 inputs.
	The following table sets forth the Company’s financial assets by level within the fair value hierarchy that were measured at fair value on a recurring basis as of March 31, 2015 and December 31, 2014.
					Fair Value Measurements Using
	(In thousands)		Fair Value		Quoted Prices in		Significant Other		Significant
					Active Markets for		Observable Inputs		Unobservable Inputs
					Identical Assets		(Level 2)		(Level 3)
					(Level 1)
	31-Mar-15
	ASSETS
	Available-for-sale securities
	U.S. Treasury		$	4,008	$	-	$	4,008	$	-
	U.S. Government agencies			346,315		-		346,315		-
	Mortgage-backed securities			312,011		-		312,011		-
	State and political subdivisions			13,452		-		13,452		-
	Other securities			31,597		-		31,597		-
	Assets held in trading accounts			6,528		2,809		3,719		-
	31-Dec-14
	ASSETS
	Available-for-sale securities
	U.S. Treasury		$	3,992	$	-	$	3,992	$	-
	U.S. Government agencies			272,816		-		272,816		-
	Mortgage-backed securities			1,572		-		1,572		-
	State and political subdivisions			6,540		-		6,540		-
	Other securities			20,363		-		20,363		-
	Assets held in trading accounts			6,987		3,320		3,667		-
	Certain financial assets and liabilities are measured at fair value on a nonrecurring basis; that is, the instruments are not measured at fair value on an ongoing basis but are subject to fair value adjustments in certain circumstances (for example, when there is evidence of impairment).  Financial assets and liabilities measured at fair value on a nonrecurring basis include the following:
	Impaired loans (collateral dependent) – Loan impairment is reported when full payment under the loan terms is not expected.  Allowable methods for determining the amount of impairment include estimating fair value using the fair value of the collateral for collateral-dependent loans.  If the impaired loan is identified as collateral dependent, then the fair value method of measuring the amount of impairment is utilized.  This method requires obtaining a current independent appraisal of the collateral and applying a discount factor to the value.  A portion of the allowance for loan losses is allocated to impaired loans if the value of such loans is deemed to be less than the unpaid balance.  If these allocations cause the allowance for loan losses to require an increase, such increase is reported as a component of the provision for loan losses.  Loan losses are charged against the allowance when management believes the uncollectability of a loan is confirmed.  Impaired loans that are collateral dependent are classified within Level 3 of the fair value hierarchy when impairment is determined using the fair value method.
	Appraisals are updated at renewal, if not more frequently, for all collateral dependent loans that are deemed impaired by way of impairment testing.  Impairment testing for selected loans rated Special Mention or worse begins at $500,000, with testing on all loans over $1.5 million rated Special Mention or worse.  All collateral dependent impaired loans meeting these thresholds have had updated appraisals or internally prepared evaluations within the last one to two years and these updated valuations are considered in the quarterly review and discussion of the corporate Special Asset Committee.  On targeted CRE loans, appraisals/internally prepared valuations may be updated before the typical 1-3 year balloon/maturity period.  If an updated valuation results in decreased value, a specific (ASC 310) impairment is placed against the loan, or a partial charge-down is initiated, depending on the circumstances and anticipation of the loan’s ability to remain a going concern, possibility of foreclosure, certain market factors, etc.
	Foreclosed assets held for sale – Foreclosed assets held for sale are reported at fair value, less estimated costs to sell.  At foreclosure, if the fair value, less estimated costs to sell, of the real estate acquired is less than the Company’s recorded investment in the related loan, a write-down is recognized through a charge to the allowance for loan losses.  Additionally, valuations are periodically performed by management and any subsequent reduction in value is recognized by a charge to income.  The fair value of foreclosed assets held for sale is estimated using Level 3 inputs based on observable market data.  As of March 31, 2015 and December 31, 2014, the fair value of foreclosed assets held for sale, excluding those covered by FDIC loss share agreements, less estimated costs to sell was $50.7 million and $44.9 million, respectively.
	The significant unobservable inputs (Level 3) used in the fair value measurement of collateral for collateral-dependent impaired loans and foreclosed assets primarily relate to the specialized discounting criteria applied to the borrower’s reported amount of collateral.  The amount of the collateral discount depends upon the condition and marketability of the collateral, as well as other factors which may affect the collectability of the loan.  Management’s assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment and considers factors specific to the asset.  It is reasonably possible that a change in the estimated fair value for instruments measured using Level 3 inputs could occur in the future.  As the Company’s primary objective in the event of default would be to liquidate the collateral to settle the outstanding balance of the loan, collateral that is less marketable would receive a larger discount.  During the reported periods, collateral discounts ranged from 10% to 40% for commercial and residential real estate collateral.
	Mortgage loans held for sale – Mortgage loans held for sale are reported at fair value if, on an aggregate basis, the fair value of the loans is less than cost.  In determining whether the fair value of loans held for sale is less than cost when quoted market prices are not available, the Company may consider outstanding investor commitments, discounted cash flow analyses with market assumptions or the fair value of the collateral if the loan is collateral dependent.  Such loans are classified within either Level 2 or Level 3 of the fair value hierarchy.  Where assumptions are made using significant unobservable inputs, such loans held for sale are classified as Level 3.  At March 31, 2015 and December 31, 2014, the aggregate fair value of mortgage loans held for sale exceeded their cost.  Accordingly, no mortgage loans held for sale were marked down and reported at fair value.
	The following table sets forth the Company’s financial assets by level within the fair value hierarchy that were measured at fair value on a nonrecurring basis as of March 31, 2015 and December 31, 2014.
					Fair Value Measurements Using
	(In thousands)		Fair Value		Quoted Prices in		Significant Other		Significant
					Active Markets for		Observable Inputs		Unobservable Inputs
					Identical Assets		(Level 2)		(Level 3)
					(Level 1)
	31-Mar-15
	ASSETS
	Impaired loans (1) (2) (collateral dependent)		$	14,731	$	-	$	-	$	14,731
	Foreclosed assets held for sale (1)			2.029		-		-		2,029
	31-Dec-14
	ASSETS
	Impaired loans (1) (2) (collateral dependent)		$	12,276	$	-	$	-	$	12,276
	Foreclosed assets held for sale (1)			3,417		-		-		3,417
	(1)	These amounts represent the resulting carrying amounts on the Consolidated Balance Sheets for impaired collateral dependent loans and foreclosed assets held for sale for which fair value re-measurements took place during the period.
	(2)	Specific allocations of $880,000 and $733,000 were related to the impaired collateral dependent loans for which fair value re-measurements took place during the periods ended March 31, 2015 and December 31, 2014, respectively
	ASC Topic 825, Financial Instruments, requires disclosure in annual and interim financial statements of the fair value of financial assets and financial liabilities, including those financial assets and financial liabilities that are not measured and reported at fair value on a recurring basis or nonrecurring basis.  The following methods and assumptions were used to estimate the fair value of each class of financial instruments.
	Cash and cash equivalents and interest bearing balances due from banks – time – The carrying amount for cash and cash equivalents approximates fair value (Level 1).  The fair value of interest bearing balances due from banks - time is estimated using a discounted cash flow calculation that applies the rates currently offered on deposits of similar remaining maturities (Level 2).
	Held-to-maturity securities – Fair values for held-to-maturity securities equal quoted market prices, if available, such as for highly liquid government bonds (Level 1).  If quoted market prices are not available, fair values are estimated based on quoted market prices of similar securities. For these securities, the Company obtains fair value measurements from an independent pricing service.  The fair value measurements consider observable data that may include dealer quotes, market spreads, cash flows, the U.S. Treasury yield curve, live trading levels, trade execution data, market consensus prepayment speeds, credit information and the security’s terms and conditions, among other things (Level 2).  In certain cases where Level 1 or Level 2 inputs are not available, securities are classified within Level 3 of the hierarchy.
	Loans – The fair value of loans, excluding loans acquired, is estimated by discounting the future cash flows, using the current rates at which similar loans would be made to borrowers with similar credit ratings and for the same remaining maturities.  Loans with similar characteristics were aggregated for purposes of the calculations (Level 3).
	Loans acquired – Fair values of loans acquired are based on a discounted cash flow methodology that considers factors including the type of loan and related collateral, variable or fixed rate, classification status, remaining term, interest rate, historical delinquencies, loan to value ratios, current market rates and remaining loan balance.  The loans were grouped together according to similar characteristics and were treated in the aggregate when applying various valuation techniques.  The discount rates used for loans were based on current market rates for new originations of similar loans.  Estimated credit losses were also factored into the projected cash flows of the loans (Level 3).
	FDIC indemnification asset – Fair value of the FDIC indemnification asset is based on the net present value of future cash proceeds expected to be received from the FDIC under the provisions of the loss share agreements using a discount rate that is based on current market rates (Level 3).
	Deposits – The fair value of demand deposits, savings accounts and money market deposits is the amount payable on demand at the reporting date (i.e., their carrying amount) (Level 2).  The fair value of fixed-maturity time deposits is estimated using a discounted cash flow calculation that applies the rates currently offered for deposits of similar remaining maturities (Level 3).
	Federal Funds purchased, securities sold under agreement to repurchase – The carrying amount for Federal funds purchased, securities sold under agreement to repurchase and short-term debt are a reasonable estimate of fair value (Level 2).
Other borrowings – For short-term instruments, the carrying amount is a reasonable estimate of fair value.  For long-term debt, rates currently available to the Company for debt with similar terms and remaining maturities are used to estimate the fair value (Level 2).
Subordinated debentures – The fair value of subordinated debentures is estimated using the rates that would be charged for subordinated debentures of similar remaining maturities (Level 2).
Accrued interest receivable/payable – The carrying amounts of accrued interest approximated fair value (Level 2).
Commitments to extend credit, letters of credit and lines of credit – The fair value of commitments is estimated using the fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements and the present creditworthiness of the counterparties.  For fixed rate loan commitments, fair value also considers the difference between current levels of interest rates and the committed rates.  The fair values of letters of credit and lines of credit are based on fees currently charged for similar agreements or on the estimated cost to terminate or otherwise settle the obligations with the counterparties at the reporting date.
The fair value of a financial instrument is the current amount that would be exchanged between willing parties, other than in a forced liquidation.  Fair value is best determined based upon quoted market prices.  However, in many instances, there are no quoted market prices for the Company’s various financial instruments.  In cases where quoted market prices are not available, fair values are based on estimates using present value or other valuation techniques.  Those techniques are significantly affected by the assumptions used, including the discount rate and estimates of future cash flows.  Accordingly, the fair value estimates may not be realized in an immediate settlement of the instrument.
The estimated fair values, and related carrying amounts, of the Company’s financial instruments are as follows:
		Carrying		Fair Value Measurements
(In thousands)		Amount		Level 1		Level 2		Level 3		Total
31-Mar-15
Financial assets:
Cash and cash equivalents		$	685,828	$	685,828	$	--	$	--	$	685,828
Interest bearing balances due from banks - time			25,000		--		24,986		--		24,986
Held-to-maturity securities			902,423		--		913,037		--		913,037
Mortgage loans held for sale			25,513		--		--		25,513		25,513
Interest receivable			24,719		--		24,719		--		24,719
Legacy loans, net			2,086,197		--		--		2,095,657		2,095,657
Loans acquired, not covered by FDIC loss share			2,418,440		--		--		2,429,407		2,429,407
Loans acquired, covered by FDIC loss share			102,468		--		--		102,933		102,933
FDIC indemnification asset			15,965		--		--		15,965		15,965
Financial liabilities:
Non-interest bearing transaction accounts			1,123,966		--		1,123,966		--		1,123,966
Interest bearing transaction accounts and savings deposits			3,627,870		--		3,627,870		--		3,627,870
Time deposits			1,522,872		--		--		1,523,149		1,523,149
Federal funds purchased and securities sold under agreements to repurchase			111,484		--		111,484		--		111,484
Other borrowings			285,060		--		288,198		--		288,198
Subordinated debentures			62,994		--		58,039		--		58,039
Interest payable			2,445		--		2,445		--		2,445
31-Dec-14
Financial assets:
Cash and cash equivalents		$	335,909	$	335,909	$	--	$	--	$	335,909
Held-to-maturity securities			777,587		--		780,533		--		780,533
Mortgage loans held for sale			21,265		--		--		21,265		21,265
Interest receivable			16,774		--		16,774		--		16,774
Legacy loans			2,024,693		--		--		2,022,889		2,022,889
Loans acquired, not covered by FDIC loss share			575,980		--		--		560,651		560,651
Loans acquired, covered by FDIC loss share			106,933		--		--		105,789		105,789
FDIC indemnification asset			22,663		--		--		22,663		22,663
Financial liabilities:
Non-interest bearing transaction accounts			889,260		--		889,260		--		889,260
Interest bearing transaction accounts and savings deposits			2,006,271		--		2,006,271		--		2,006,271
Time deposits			965,187		--		--		967,900		967,900
Federal funds purchased and securities sold under agreements to repurchase			110,586		--		110,586		--		110,586
Other borrowings			114,682		--		114,698		--		114,698
Subordinated debentures			20,620		--		16,115		--		16,115
Interest payable			1,147		--		1,147		--		1,147
The fair value of commitments to extend credit, letters of credit and lines of credit is not presented since management believes the fair value to be insignificant.

Accounting_Policies_by_Policy_

Accounting Policies, by Policy (Policies)	3 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
New Accounting Pronouncements, Policy [Policy Text Block]	Recently Issued Accounting Pronouncements
	ASU 2014-17 – Business Combinations: Pushdown Accounting (“ASU 2014-17”).  ASU 2014-17 amends existing guidance related to the accounting by an acquired entity upon a change-in-control event. The standard provides an acquired entity with an option to apply pushdown accounting in its separate financial statements upon occurrence of an event in which an acquirer obtains control of the acquired entity. An acquired entity may elect the option to apply pushdown accounting in the reporting period in which the change-in-control event occurs. If pushdown accounting is not applied in the reporting period in which the change-in-control event occurs, an acquired entity will have the option to elect to apply pushdown accounting in a subsequent reporting period to the acquired entity’s most recent change-in-control event.  ASU 2014-17 was effective on November 18, 2014.  The adoption of this standard has not had a material effect on the Company’s operating results or financial condition.
	ASU 2014-14 – Receivables – Troubled Debt Restructurings by Creditors: Classification of Certain Government-Guaranteed Mortgage Loans Upon Foreclosure (“ASU 2014-14”).  ASU 2014-14 amends existing guidance related to the classification of certain government-guaranteed mortgage loans, including those guaranteed by the FHA and the VA, upon foreclosure. It requires that a mortgage loan be derecognized and a separate other receivable be recognized upon foreclosure if three conditions are met.  Upon foreclosure, the separate other receivable should be measured based on the amount of the loan balance (principal and interest) expected to be recovered from the guarantor.  ASU 2014-14 is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2014, and early adoption is permitted.  It can be applied using a prospective transition method or a modified retrospective transition using a cumulative-effect adjustment.  The adoption of this standard has not had a material effect on the Company’s results of operations, financial position or disclosures.
	ASU 2014-12 – Compensation – Stock Compensation – Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved After the Requisite Service Period (“ASU 2014-12”).  ASU 2014-12 amends existing guidance related to the accounting for share-based payments when the terms of an award provide that a performance target could be achieved after the requisite service period. The standard requires that a performance target that affects vesting and that could be achieved after the requisite service period should be treated as a performance condition.  ASU 2014-12 is effective for annual periods and interim periods within those annual periods beginning after December 15, 2015, and early adoption is permitted.  It can be applied either prospectively to all awards granted or modified after the effective date or retrospectively to all awards with performance targets that are outstanding as of the beginning of the earliest annual period presented in the financial statements and to all new or modified awards thereafter. The adoption of this standard is not expected to have a material effect on the Company’s operating results or financial condition.
	ASU 2014-11 – Transfers and Servicing – Repurchase-to-Maturity Transactions, Repurchase Financings, and Disclosures (“ASU 2014-11”).  ASU 2014-11 aligns the accounting for repurchase-to-maturity transactions and repurchase agreements executed as a repurchase financing with the accounting for other typical repurchase agreements. ASU 2014-11 requires that these transactions all be accounted for as secured borrowings. The standard requires a new disclosure for transactions economically similar to repurchase agreements in which the transferor retains substantially all of the exposure to the economic return on the transferred financial assets throughout the term of the transaction and requires expanded disclosures about the nature of collateral pledged in repurchase agreements and similar transactions accounted for as secured borrowings.  ASU 2014-11 is effective for the first interim or annual period beginning after December 15, 2014.  An entity is required to present changes in accounting for transactions outstanding on the effective date as a cumulative-effect adjustment to retained earnings as of the beginning of the period of adoption. Earlier application for a public business entity is prohibited.  The adoption of this standard did not have a material effect on the Company’s results of operations, financial position or disclosures.
	ASU 2014-09 – Revenue from Contracts with Customers (“ASU 2014-09”).  ASU 2014-09 provides guidance that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. ASU 2014-09 is effective prospectively, for annual and interim periods, beginning after December 15, 2016. The Company is currently evaluating the impact this standard will have on the Company’s results of operations, financial position or disclosures.
	ASU 2014-04 – Receivables – Troubled Debt Restructurings by Creditors (“ASU 2014-04”).  ASU 2014-04 clarifies when a creditor should reclassify mortgage loans collateralized by residential real estate from loans to other real estate owned.  It defines when an in-substance repossession or foreclosure has occurred and when a creditor is considered to have received physical possession of residential real estate collateralizing a mortgage loan.  ASU 2014-04 is effective for fiscal years beginning after December 31, 2014, and early adoption is permitted.  It can be applied either prospectively or using a modified retrospective transition method.  The adoption of this standard has not had a material effect on the Company’s results of operations, financial position or disclosures.
	There have been no other significant changes to the Company’s accounting policies from the 2014 Form 10-K.  Presently, the Company is not aware of any other changes to the Accounting Standards Codification that will have a material impact on the Company’s present or future financial position or results of operations.
Business Combinations Policy [Policy Text Block]	Acquisition Accounting, Acquired Loans
	The Company accounts for its acquisitions under ASC Topic 805, Business Combinations, which requires the use of the purchase method of accounting.  All identifiable assets acquired, including loans, are recorded at fair value.  No allowance for loan losses related to the acquired loans is recorded on the acquisition date as the fair value of the loans acquired incorporates assumptions regarding credit risk.  Loans acquired are recorded at fair value in accordance with the fair value methodology prescribed in ASC Topic 820, exclusive of the shared-loss agreements with the FDIC.  The fair value estimates associated with the loans include estimates related to expected prepayments and the amount and timing of undiscounted expected principal, interest and other cash flows.
	The Company evaluates loans acquired in accordance with the provisions of ASC Topic 310-20, Nonrefundable Fees and Other Costs.  The fair value discount on these loans is accreted into interest income over the weighted average life of the loans using a constant yield method.  These loans are not considered to be impaired loans.  The Company evaluates purchased impaired loans in accordance with the provisions of ASC Topic 310-30, Loans and Debt Securities Acquired with Deteriorated Credit Quality.  Purchased loans are considered impaired if there is evidence of credit deterioration since origination and if it is probable that not all contractually required payments will be collected.
	The Company evaluates all of the loans purchased in conjunction with its FDIC-assisted transactions in accordance with the provisions of ASC Topic 310-30.  All loans acquired in the FDIC transactions, both covered and not covered, were deemed to be impaired loans.  All loans acquired, whether or not covered by FDIC loss share agreements, are considered impaired if there is evidence of credit deterioration since origination and if it is probable that not all contractually required payments will be collected.
	For impaired loans accounted for under ASC Topic 310-30, we continue to estimate cash flows expected to be collected on pools of loans sharing common risk characteristics, which are treated in the aggregate when applying various valuation techniques.  We evaluate at each balance sheet date whether the present value of our pools of loans determined using the effective interest rates has decreased significantly and if so, recognize a provision for loan loss in our consolidated statement of income.  For any significant increases in cash flows expected to be collected, we adjust the amount of accretable yield recognized on a prospective basis over the pool’s remaining life.
Deteriorated Loans Transferred in, Policy [Policy Text Block]	Covered Loans and Related Indemnification Asset
	Because the FDIC will reimburse us for certain losses incurred on certain acquired loans, an indemnification asset is recorded at fair value at the acquisition date.  The indemnification asset is recognized at the same time as the indemnified loans, and measured on the same basis, subject to collectability or contractual limitations.  The shared-loss agreements on the acquisition date reflect the reimbursements expected to be received from the FDIC, using an appropriate discount rate, which reflects counterparty credit risk and other uncertainties.
	The shared-loss agreements continue to be measured on the same basis as the related indemnified loans, as prescribed by ASC Topic 805.  Deterioration in the credit quality of the loans (immediately recorded as an adjustment to the allowance for loan losses) would immediately increase the basis of the shared-loss agreements, with the offset recorded through the consolidated statement of income.  Increases in the credit quality or cash flows of loans (reflected as an adjustment to yield and accreted into income over the remaining life of the loans) decrease the basis of the shared-loss agreements, with such decrease being accreted into income over 1) the same period or 2) the life of the shared-loss 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.  Fair value accounting incorporates into the fair value of the indemnification asset an element of the time value of money, which is accreted back into income over the life of the shared-loss agreements.
	Upon the determination of an incurred loss the indemnification asset will be reduced by the amount owed by the FDIC.  A corresponding, claim receivable is recorded until cash is received from the FDIC.  For further discussion of the Company’s acquisition and loan accounting, see Note 5, Loans Acquired.
Earnings Per Share, Policy [Policy Text Block]	Earnings Per Common Share (“EPS”)
	Basic EPS is computed by dividing reported net income available to common shareholders by weighted average number of common shares outstanding during each period.  Diluted EPS is computed by dividing reported net income available to common shareholders by the weighted average common shares and all potential dilutive common shares outstanding during the period.
	Following is the computation of earnings per common share for the three months ended March 31, 2015 and 2014:
	(In thousands, except per share data)	2015		2014
	Net income available to common shareholders	$	8,709	$	4,352
	Average common shares outstanding		22,258		16,270
	Average potential dilutive common shares		92		40
	Average diluted common shares		22,350		16,310
	Basic earnings per common share	$	0.39	$	0.27
	Diluted earnings per common share	$	0.39	$	0.27
Subsequent Events, Policy [Policy Text Block]	Subsequent Events
	On April 28, 2015, the Company entered into a definitive agreement and plan of merger (the “Agreement”) with Ozark Trust & Investment Corporation (“OTIC”), including its wholly-owned non-deposit trust company, Trust Company of the Ozarks (“TCO”).  TCO is headquartered in Springfield, Missouri and has over $1 billion in assets under management.  Under the terms of the Agreement, each outstanding share of common stock of OTIC held by banks or bank holding companies will be converted into the right to receive $701.9268 in cash and each share of common stock or common stock equivalents held by any other type of shareholder will be converted into the right to receive 16.7205 shares of the Company’s common stock, all subject to certain conditions and potential adjustments.  The Company owns 1,000 shares of OTIC’s common stock, which it acquired through its acquisition of Liberty Bancshares, Inc. in February 2015.  The transaction is valued at $20.7 million (based on the Company’s April 27, 2015 closing price).  The purchase price will be allocated among the net assets of OTIC acquired as appropriate, with the remaining balance being reported as goodwill.  The transaction is subject to the routine regulatory review by the Missouri Department of Finance and other customary closing conditions.  The transaction is expected to close during the third quarter of 2015.  Upon closing, OTIC will merge into the Company.

Note_1_Basis_of_Presentation_T

Note 1 - Basis of Presentation (Tables)	3 Months Ended
	Mar. 31, 2015
Disclosure Text Block [Abstract]
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	(In thousands, except per share data)	2015		2014
	Net income available to common shareholders	$	8,709	$	4,352
	Average common shares outstanding		22,258		16,270
	Average potential dilutive common shares		92		40
	Average diluted common shares		22,350		16,310
	Basic earnings per common share	$	0.39	$	0.27
	Diluted earnings per common share	$	0.39	$	0.27

Note_2_Acquisitions_Tables

Note 2 - Acquisitions (Tables)	3 Months Ended
	Mar. 31, 2015
Disclosure Text Block Supplement [Abstract]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]	(In thousands)	Acquired from			Fair Value			Fair
		Liberty			Adjustments			Value
	Assets Acquired
	Cash and due from banks	$	102,637		$	(14	)	$	102,623
	Federal funds sold		7,060			--			7,060
	Investment securities		99,123			(335	)		98,788
	Loans acquired, not covered by FDIC loss share		790,493			(9,835	)		780,658
	Allowance for loan losses		(10,422	)		10,422			--
	Premises and equipment		34,239			(1,229	)		33,010
	Bank owned life insurance		16,972			--			16,972
	Core deposit intangible		699			13,857			14,556
	Other intangibles		3,063			(3,063	)		--
	Other assets		17,703			(4,293	)		13,410
	Total assets acquired	$	1,061,567		$	5,510		$	1,067,077
	Liabilities Assumed
	Deposits:
	Non-interest bearing transaction accounts	$	146,618		$	--		$	146,618
	Interest bearing transaction accounts and savings deposits		543,183			--			543,183
	Time deposits		184,913			--			184,913
	Total deposits		874,714			--			874,714
	FHLB borrowings		46,128			223			46,351
	Subordinated debentures		20,620			--			20,620
	Accrued interest and other liabilities		7,828			300			8,128
	Total liabilities assumed		949,290			523			949,813
	Equity		112,277			(112,277	)		--
	Total equity assumed		112,277			(112,277	)		--
	Total liabilities and equity assumed	$	1,061,567		$	(111,754	)	$	949,813
	Net assets acquired								117,264
	Purchase price								212,176
	Goodwill							$	94,912
	(In thousands)	Acquired from			Fair Value			Fair
		Community First			Adjustments			Value
	Assets Acquired
	Cash and due from banks	$	39,848		$	--		$	39,848
	Federal funds sold		76,508			--			76,508
	Investment securities		570,199			(3,381	)		566,818
	Loans acquired, not covered by FDIC loss share		1,163,398			(26,855	)		1,136,543
	Allowance for loan losses		(14,635	)		14,635			--
	Foreclosed assets not covered by FDIC loss share		747			--			747
	Premises and equipment		44,837			(2,794	)		42,043
	Bank owned life insurance		22,149			--			22,149
	Goodwill		100			(100	)		--
	Core deposit intangible		--			11,273			11,273
	Other intangibles		--			420			420
	Deferred tax asset		3,700			3,866			7,566
	Other assets		11,474			--			11,474
	Total assets acquired	$	1,918,325		$	(2,936	)	$	1,915,389
	Liabilities Assumed
	Deposits:
	Non-interest bearing transaction accounts	$	103,825		$	--		$	103,825
	Interest bearing transaction accounts and savings deposits		995,207			--			995,207
	Time deposits		436,181			849			437,030
	Total deposits		1,535,213			849			1,536,062
	Federal funds purchased and securities sold under agreement to repurchase		16,230			--			16,230
	FHLB borrowings		143,047			1,347			144,394
	Subordinated debentures		21,754			--			21,754
	Accrued interest and other liabilities		8,769			601			9,370
	Total liabilities assumed		1,725,013			2,797			1,727,810
	Equity		193,312			(193,312	)		--
	Total equity assumed		193,312			(193,312	)		--
	Total liabilities and equity assumed	$	1,918,325		$	(190,515	)	$	1,727,810
	Net assets acquired								187,580
	Purchase price								299,204
	Goodwill							$	111,624
Business Acquisition, Pro Forma Information [Table Text Block]	(dollars in thousands)	Three-months ended			Three-months ended
		31-Mar-15			31-Mar-14
	Revenue (1)	$	97,265		$	90,843
	Net income	$	23,273		$	5,444
	Earnings per share	$	0.78		$	0.19

Note_3_Investment_Securities_T

Note 3 - Investment Securities (Tables)	3 Months Ended
	Mar. 31, 2015
Investments, Debt and Equity Securities [Abstract]
Investment [Table Text Block]		31-Mar-15											31-Dec-14
	(In thousands)	Amortized		Gross			Gross Unrealized			Estimated			Amortized		Gross			Gross Unrealized			Estimated
		Cost		Unrealized			(Losses)			Fair			Cost		Unrealized			(Losses)			Fair
				Gains						Value					Gains						Value
	Held-to-Maturity
	U.S. Government agencies	$	390,625	$	1,935		$	(1,043	)	$	391,517		$	418,914	$	929		$	(4,055	)	$	415,788
	Mortgage-backed securities		28,535		276			(145	)		28,666			29,743		56			(411	)		29,388
	State and political subdivisions		482,316		9,807			(210	)		491,907			328,310		7,000			(573	)		334,737
	Other securities		947		-			-			947			620		-			-			620
	Total HTM	$	902,423	$	12,012		$	(1,398	)	$	913,037		$	777,587	$	7,985		$	(5,039	)	$	780,533
	Available-for-Sale
	U.S. Treasury	$	4,000	$	8		$	-		$	4,008		$	4,000	$	1		$	(9	)	$	3,992
	U.S. Government agencies		346,786		355			(826	)		346,315			275,381		15			(2,580	)		272,816
	Mortgage-backed securities		308,333		3,748			(70	)		312,011			1,579		-			(7	)		1,572
	State and political subdivisions		13,342		110			-			13,452			6,536		7			(3	)		6,540
	Other securities		31,870		458			(731	)		31,597			19,985		386			(8	)		20,363
	Total AFS	$	704,331	$	4,679		$	(1,627	)	$	707,383		$	307,481	$	409		$	(2,607	)	$	305,283
Schedule of Unrealized Loss on Investments [Table Text Block]		Less Than 12 Months					12 Months or More						Total
	(In thousands)	Estimated		Gross			Estimated			Gross			Estimated		Gross
		Fair		Unrealized			Fair			Unrealized			Fair		Unrealized
		Value		Losses			Value			Losses			Value		Losses
	Held-to-Maturity
	U.S. Government agencies	$	131,872	$	(589	)	$	70,543		$	(454	)	$	202,415	$	(1,043	)
	Mortgage-backed securities		1,902		(13	)		8,895			(132	)		10,797		(145	)
	State and political subdivisions		31,294		(186	)		2,920			(24	)		34,214		(210	)
	Total HTM	$	165,068	$	(788	)	$	82,358		$	(610	)	$	247,426	$	(1,398	)
	Available-for-Sale
	U.S. Government agencies	$	196,571	$	(500	)	$	79,311		$	(326	)	$	275,882	$	(826	)
	Mortgage-backed securities		12,300		(70	)		--			--			12,300		(70	)
	State and political subdivisions		--		--			--			--			--		--
	Equity Securities		515		(2	)		--			--			515		(2	)
	Other		1,060		(729	)		--			--			1,060		(729	)
	Total AFS	$	210,446	$	(1,301	)	$	79,311		$	(326	)	$	289,757	$	(1,627	)
Investment Income [Table Text Block]	(In thousands)	2015		2014
	Taxable:
	Held-to-maturity	$	1,389	$	1,349
	Available-for-sale		1,583		550
	Non-taxable:
	Held-to-maturity		2,602		2,619
	Available-for-sale		305		31
	Total	$	5,879	$	4,549
Investments Classified by Contractual Maturity Date [Table Text Block]		Held-to-Maturity					Available-for-Sale
	(In thousands)	Amortized		Fair			Amortized			Fair
		Cost		Value			Cost			Value
	One year or less	$	41,310	$	41,392		$	58,762		$	58,752
	After one through five years		414,115		414,863			247,200			246,659
	After five through ten years		182,259		185,229			123,795			124,808
	After ten years		264,739		271,553			243,476			246,322
	Other securities (no maturity)		-		-			31,098			30,842
	Total	$	902,423	$	913,037		$	704,331		$	707,383

Note_4_Loans_and_Allowance_for1

Note 4 - Loans and Allowance for Loan Losses (Tables)	3 Months Ended
	Mar. 31, 2015
Receivables [Abstract]
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]	(In thousands)	March 31,			December 31,
		2015			2014
	Consumer:
	Credit cards	$	171,413		$	185,380
	Other consumer		107,486			103,402
	Total consumer		278,899			288,782
	Real Estate:
	Construction		178,929			181,968
	Single family residential		467,671			455,563
	Other commercial		755,701			714,797
	Total real estate		1,402,301			1,352,328
	Commercial:
	Commercial		324,815			291,820
	Agricultural		105,228			115,658
	Total commercial		430,043			407,478
	Other		4,137			5,133
	Legacy loans		2,115,380			2,053,721
	Loans acquired, not covered by FDIC loss share (net of discount) (1)		2,418,440			575,980
	Loans acquired, covered by FDIC loss share (net of discount and allowance) (1)		102,468			106,933
	Total loans	$	4,638,288		$	2,736,634
Schedule of Financing Receivables, Non Accrual Status [Table Text Block]	(In thousands)	March 31,			December 31,
		2015			2014
	Consumer:
	Credit cards	$	290		$	197
	Other consumer		401			405
	Total consumer		691			602
	Real estate:
	Construction		5,341			4,863
	Single family residential		4,600			4,010
	Other commercial		2,755			1,522
	Total real estate		12,696			10,395
	Commercial:
	Commercial		950			585
	Agricultural		174			456
	Total commercial		1,124			1,041
	Total	$	14,511		$	12,038
Past Due Financing Receivables [Table Text Block]	(In thousands)	Gross			90 Days			Total			Current			Total			90 Days
		30-89 Days			or More			Past Due						Loans			Past Due &
		Past Due			Past Due												Accruing
	31-Mar-15
	Consumer:
	Credit cards	$	538		$	439		$	977		$	170,436		$	171,413		$	--
	Other consumer		1,205			388			1,593			105,893			107,486			116
	Total consumer		1,743			827			2,570			276,329			278,899			116
	Real estate:
	Construction		1,798			828			2,626			176,303			178,929			--
	Single family residential		3,023			2,568			5,591			462,080			467,671			3
	Other commercial		3,453			1,406			4,859			750,842			755,701			--
	Total real estate		8,274			4,802			13,076			1,389,225			1,402,301			3
	Commercial:
	Commercial		645			128			773			324,042			324,815			13
	Agricultural		435			72			507			104,721			105,228			3
	Total commercial		1,080			200			1,280			428,763			430,043			16
	Other		--			--			--			4,137			4,137			--
	Total	$	11,097		$	5,829		$	16,926		$	2,098,454		$	2,115,380		$	135
	31-Dec-14
	Consumer:
	Credit cards	$	687		$	457		$	1,144		$	184,236		$	185,380		$	--
	Other consumer		1,349			447			1,796			101,606			103,402			223
	Total consumer		2,036			904			2,940			285,842			288,782			223
	Real estate:
	Construction		760			570			1,330			180,638			181,968			177
	Single family residential		4,913			2,213			7,126			448,437			455,563			248
	Other commercial		1,987			847			2,834			711,963			714,797			--
	Total real estate		7,660			3,630			11,290			1,341,038			1,352,328			425
	Commercial:
	Commercial		381			354			735			291,085			291,820			--
	Agricultural		119			109			228			115,430			115,658			40
	Total commercial		500			463			963			406,515			407,478			40
	Other		--			--			--			5,133			5,133			--
	Total	$	10,196		$	4,997		$	15,193		$	2,038,528		$	2,053,721		$	688
Impaired Financing Receivables [Table Text Block]	(In thousands)	Unpaid			Recorded Investment			Recorded			Total			Related			Average		Interest
		Contractual			With No			Investment			Recorded			Allowance			Investment in		Income
		Principal			Allowance			With Allowance			Investment						Impaired		Recognized
		Balance															Loans
	31-Mar-15																Three Months Ended
																	31-Mar-15
	Consumer:
	Credit cards	$	439		$	439		$	--		$	439		$	13		$	318	$	5
	Other consumer		572			544			8			552			91			586		9
	Total consumer		1,011			983			8			991			104			904		14
	Real estate:
	Construction		8,098			7,482			--			7,482			464			7,251		115
	Single family residential		4,789			4,385			240			4,625			781			4,475		71
	Other commercial		3,310			2,590			128			2,718			564			2,100		33
	Total real estate		16,197			14,457			368			14,825			1,809			13,826		219
	Commercial:
	Commercial		1,022			958			--			958			172			762		12
	Agricultural		182			141			--			141			25			301		5
	Total commercial		1,204			1,099			--			1,099			197			1,063		17
	Total	$	18,412		$	16,539		$	376		$	16,915		$	2,110		$	15,793	$	250
	31-Dec-14																Three Months Ended
																	31-Mar-14
	Consumer:
	Credit cards	$	197		$	197		$	--		$	197		$	6		$	494	$	5
	Other consumer		604			610			9			619			118			860		10
	Total consumer		801			807			9			816			124			1,354		15
	Real estate:
	Construction		7,400			7,020			--			7,020			599			3,001		33
	Single family residential		4,442			3,948			377			4,325			899			3,982		44
	Other commercial		1,955			1,446			36			1,482			268			9,567		106
	Total real estate		13,797			12,414			413			12,827			1,756			16,550		183
	Commercial:
	Commercial		1,227			566			--			566			102			638		7
	Agricultural		501			460			--			460			83			82		1
	Total commercial		1,728			1,026			--			1,026			185			720		8
	Total	$	16,236		$	14,247		$	422		$	14,669		$	2,065		$	18,624	$	206
Troubled Debt Restructurings on Financing Receivables [Table Text Block]		Accruing TDR Loans						Nonaccrual TDR Loans						Total TDR Loans
	(Dollars in thousands)	Number			Balance			Number			Balance			Number			Balance
	31-Mar-15
	Real estate:
	Construction		-		$	-			1		$	383			1		$	383
	Single-family residential		2			392			3			351			5			743
	Other commercial		3			1,835			1			608			4			2,443
	Total real estate		5			2,227			5			1,342			10			3,569
	Total		5		$	2,227			5		$	1,342			10		$	3,569
	31-Dec-14
	Real estate:
	Construction		-		$	-			1		$	391			1		$	391
	Single-family residential		2			393			1			3			3			396
	Other commercial		3			1,840			1			614			4			2,454
	Total real estate		5			2,233			3			1,008			8			3,241
	Total		5		$	2,233			3		$	1,008			8		$	3,241
Schedule of Loans Restructured as TDRs [Table Text Block]											Modification Type
	(Dollars in thousands)	Number of			Balance Prior			Balance at			Change in			Change in			Financial Impact
		Loans			to TDR			31-Mar			Maturity			Rate			on Date of
											Date						Restructure
	Three Months Ended March 31, 2015
	Real estate:
	Single-family residential		2		$	348		$	348		$	348		$	-		$	-
	Total real estate		2			348			348			348			-			-
	Total		2		$	348		$	348		$	348		$	-		$	-
	Three Months Ended March 31, 2014
	Real estate:
	Single-family residential		1		$	1,031		$	1,031		$	1,031		$	-		$	-
	Total real estate		1			1,031			1,031			1,031			-			-
	Total		1		$	1,031		$	1,031		$	1,031		$	-		$	-
Financing Receivable Credit Quality Indicators [Table Text Block]	(In thousands)	Risk Rate			Risk Rate			Risk Rate			Risk Rate			Risk Rate			Total
		4-Jan			5			6			7			8
	31-Mar-15
	Consumer:
	Credit cards	$	170,974		$	--		$	439		$	--		$	--		$	171,413
	Other consumer		106,683			5			758			40			--			107,486
	Total consumer		277,657			5			1,197			40			--			278,899
	Real estate:
	Construction		174,956			38			3,935			--			--			178,929
	Single family residential		457,275			1,941			8,377			78			--			467,671
	Other commercial		736,764			7,714			11,223			--			--			755,701
	Total real estate		1,368,995			9,693			23,535			78			--			1,402,301
	Commercial:
	Commercial		301,561			1,667			21,579			8			--			324,815
	Agricultural		105,034			20			174			--			--			105,228
	Total commercial		406,595			1,687			21,753			8			--			430,043
	Other		4,137			--			--			--			--			4,137
	Loans acquired, not covered by FDIC loss share		2,332,979			27,043			56,231			2,159			28			2,418,440
	Loans acquired, covered by FDIC loss share		102,468			--			--			--			--			102,468
	Total	$	4,492,831		$	38,428		$	102,716		$	2,285		$	28		$	4,636,288
	(In thousands)	Risk Rate			Risk Rate			Risk Rate			Risk Rate			Risk Rate			Total
		4-Jan			5			6			7			8
	31-Dec-14
	Consumer:
	Credit cards	$	184,923		$	--		$	457		$	--		$	--		$	185,380
	Other consumer		102,515			5			839			43			--			103,402
	Total consumer		287,438			5			1,296			43			--			288,782
	Real estate:
	Construction		176,825			84			5,059			--			--			181,968
	Single family residential		446,040			1,776			7,665			82			--			455,563
	Other commercial		698,329			7,074			9,394			--			--			714,797
	Total real estate		1,321,194			8,934			22,118			82			--			1,352,328
	Commercial:
	Commercial		271,017			1,544			19,248			11			--			291,820
	Agricultural		115,106			20			532			--			--			115,658
	Total commercial		386,123			1,564			19,780			11			--			407,478
	Other		5,133			--			--			--			--			5,133
	Loans acquired, not covered by FDIC loss share		535,728			1,435			36,958			1,854			5			575,980
	Loans acquired, covered by FDIC loss share		106,933			--			--			--			--			106,933
	Total	$	2,642,549		$	11,938		$	80,152		$	1,990		$	5		$	2,736,634
Schedule of Net (charge-offs)/recoveries, excluding loans acquired [Table Text Block]		Three Months Ended
		March 31,
	(In thousands)	2015			2014
	Consumer:
	Credit cards	$	(572	)	$	(545	)
	Student loans		--			(9	)
	Other consumer		(87	)		(16	)
	Total consumer		(659	)		(570	)
	Real estate:
	Construction		--			(430	)
	Single-family residential		(251	)		(311	)
	Other commercial		(30	)		4
	Total real estate		(281	)		(737	)
	Commercial:
	Commercial		(76	)		(42	)
	Agriculture		--			(18	)
	Total commercial		(76	)		(60	)
	Total	$	(1,016	)	$	(1,367	)
Allowance for Credit Losses on Financing Receivables [Table Text Block]	(In thousands)	Commercial			Real			Credit			Other			Total
					Estate			Card			Consumer
											and Other
	Three Months Ended March 31, 2015
	Balance, beginning of period	$	6,962		$	15,161		$	5,445		$	1,460		$	29,028
	Provision for loan losses		(16	)		673			654			(140	)		1,171
	Charge-offs		(245	)		(293	)		(785	)		(220	)		(1,543	)
	Recoveries		169			12			213			133			527
	Net charge-offs		(76	)		(281	)		(572	)		(87	)		(1,016	)
	Balance, March 31, 2015	$	6,870		$	15,553		$	5,527		$	1,233		$	29,183
	Period-end amount allocated to:
	Loans individually evaluated for impairment	$	197		$	1,809		$	13		$	91		$	2,110
	Loans collectively evaluated for impairment		6,673			13,744			5,514			1,142			27,073
	Balance, March 31, 2015	$	6,870		$	15,553		$	5,527		$	1,233		$	29,183
	(In thousands)	Commercial			Real			Credit			Other			Total
					Estate			Card			Consumer
											and Other
	Three Months Ended March 31, 2014
	Balance, beginning of period	$	3,205		$	16,885		$	5,430		$	1,922		$	27,442
	Provision for loan losses		363			245			559			(259	)		908
	Charge-offs		(74	)		(806	)		(816	)		(146	)		(1,842	)
	Recoveries		14			69			271			121			475
	Net charge-offs		(60	)		(737	)		(545	)		(25	)		(1,367	)
	Balance, March 31, 2014	$	3,508		$	16,393		$	5,444		$	1,638		$	26,983
	Period-end amount allocated to:
	Loans individually evaluated for impairment	$	173		$	1,540		$	14		$	163		$	1,890
	Loans collectively evaluated for impairment		3,335			14,853			5,430			1,475			25,093
	Balance, March 31, 2014	$	3,508		$	16,393		$	5,444		$	1,638		$	26,983
	Period-end amount allocated to:
	Loans individually evaluated for impairment	$	185		$	1,756		$	6		$	118		$	2,065
	Loans collectively evaluated for impairment		6,777			13,405			5,439			1,342			26,963
	Balance, December 31, 2014	$	6,962		$	15,161		$	5,445		$	1,460		$	29,028
Schedule of Loans by impairment evaluation [Table Text Block]	(In thousands)	Commercial			Real			Credit			Other			Total
					Estate			Card			Consumer
											and Other
	31-Mar-15
	Loans individually evaluated for impairment	$	1,099		$	14,825		$	439		$	552		$	16,915
	Loans collectively evaluated for impairment		428,944			1,387,476			170,974			111,071			2,098,465
	Balance, end of period	$	430,043		$	1,402,301		$	171,413		$	111,623		$	2,115,380
	31-Dec-14
	Loans individually evaluated for impairment	$	1,026		$	12,827		$	197		$	619		$	14,669
	Loans collectively evaluated for impairment		406,452			1,339,501			185,183			107,916			2,039,052
	Balance, end of period	$	407,478		$	1,352,328		$	185,380		$	108,535		$	2,053,721

Note_5_Loans_Acquired_Tables

Note 5 - Loans Acquired (Tables)	3 Months Ended
	Mar. 31, 2015
Note 5 - Loans Acquired (Tables) [Line Items]
Carrying Value Of All Acquired Impaired Loans [Table Text Block]		Loans Acquired
	(in thousands)	March 31,			December 31,
		2015			2014
	Consumer:
	Other consumer	$	131,168		$	8,514
	Total consumer		131,168			8,514
	Real estate:
	Construction		158,101			46,911
	Single family residential		723,658			175,970
	Other commercial		1,162,870			390,877
	Total real estate		2,044,629			613,758
	Commercial:
	Commercial		314,723			56,134
	Agricultural		23,400			4,507
	Total commercial		338,123			60,641
	Other		6.988			60,641
	Total loans acquired (1)	$	2.520.908		$	682,913
Schedule of Financing Receivables, Non Accrual Status [Table Text Block]	(In thousands)	March 31,			December 31,
		2015			2014
	Consumer:
	Credit cards	$	290		$	197
	Other consumer		401			405
	Total consumer		691			602
	Real estate:
	Construction		5,341			4,863
	Single family residential		4,600			4,010
	Other commercial		2,755			1,522
	Total real estate		12,696			10,395
	Commercial:
	Commercial		950			585
	Agricultural		174			456
	Total commercial		1,124			1,041
	Total	$	14,511		$	12,038
Past Due Financing Receivables [Table Text Block]	(In thousands)	Gross			90 Days			Total			Current			Total		90 Days
		30-89 Days			or More			Past Due						Loans		Past Due &
		Past Due			Past Due											Accruing
	31-Mar-15
	Consumer:
	Credit cards	$	538		$	439		$	977		$	170,436		$	171,413	$	--
	Other consumer		1,205			388			1,593			105,893			107,486		116
	Total consumer		1,743			827			2,570			276,329			278,899		116
	Real estate:
	Construction		1,798			828			2,626			176,303			178,929		--
	Single family residential		3,023			2,568			5,591			462,080			467,671		3
	Other commercial		3,453			1,406			4,859			750,842			755,701		--
	Total real estate		8,274			4,802			13,076			1,389,225			1,402,301		3
	Commercial:
	Commercial		645			128			773			324,042			324,815		13
	Agricultural		435			72			507			104,721			105,228		3
	Total commercial		1,080			200			1,280			428,763			430,043		16
	Other		--			--			--			4,137			4,137		--
	Total	$	11,097		$	5,829		$	16,926		$	2,098,454		$	2,115,380	$	135
	31-Dec-14
	Consumer:
	Credit cards	$	687		$	457		$	1,144		$	184,236		$	185,380	$	--
	Other consumer		1,349			447			1,796			101,606			103,402		223
	Total consumer		2,036			904			2,940			285,842			288,782		223
	Real estate:
	Construction		760			570			1,330			180,638			181,968		177
	Single family residential		4,913			2,213			7,126			448,437			455,563		248
	Other commercial		1,987			847			2,834			711,963			714,797		--
	Total real estate		7,660			3,630			11,290			1,341,038			1,352,328		425
	Commercial:
	Commercial		381			354			735			291,085			291,820		--
	Agricultural		119			109			228			115,430			115,658		40
	Total commercial		500			463			963			406,515			407,478		40
	Other		--			--			--			5,133			5,133		--
	Total	$	10,196		$	4,997		$	15,193		$	2,038,528		$	2,053,721	$	688
Financing Receivable Credit Quality Indicators [Table Text Block]	(In thousands)	Risk Rate			Risk Rate			Risk Rate			Risk Rate			Risk Rate		Total
		4-Jan			5			6			7			8
	31-Mar-15
	Consumer:
	Credit cards	$	170,974		$	--		$	439		$	--		$	--	$	171,413
	Other consumer		106,683			5			758			40			--		107,486
	Total consumer		277,657			5			1,197			40			--		278,899
	Real estate:
	Construction		174,956			38			3,935			--			--		178,929
	Single family residential		457,275			1,941			8,377			78			--		467,671
	Other commercial		736,764			7,714			11,223			--			--		755,701
	Total real estate		1,368,995			9,693			23,535			78			--		1,402,301
	Commercial:
	Commercial		301,561			1,667			21,579			8			--		324,815
	Agricultural		105,034			20			174			--			--		105,228
	Total commercial		406,595			1,687			21,753			8			--		430,043
	Other		4,137			--			--			--			--		4,137
	Loans acquired, not covered by FDIC loss share		2,332,979			27,043			56,231			2,159			28		2,418,440
	Loans acquired, covered by FDIC loss share		102,468			--			--			--			--		102,468
	Total	$	4,492,831		$	38,428		$	102,716		$	2,285		$	28	$	4,636,288
	(In thousands)	Risk Rate			Risk Rate			Risk Rate			Risk Rate			Risk Rate		Total
		4-Jan			5			6			7			8
	31-Dec-14
	Consumer:
	Credit cards	$	184,923		$	--		$	457		$	--		$	--	$	185,380
	Other consumer		102,515			5			839			43			--		103,402
	Total consumer		287,438			5			1,296			43			--		288,782
	Real estate:
	Construction		176,825			84			5,059			--			--		181,968
	Single family residential		446,040			1,776			7,665			82			--		455,563
	Other commercial		698,329			7,074			9,394			--			--		714,797
	Total real estate		1,321,194			8,934			22,118			82			--		1,352,328
	Commercial:
	Commercial		271,017			1,544			19,248			11			--		291,820
	Agricultural		115,106			20			532			--			--		115,658
	Total commercial		386,123			1,564			19,780			11			--		407,478
	Other		5,133			--			--			--			--		5,133
	Loans acquired, not covered by FDIC loss share		535,728			1,435			36,958			1,854			5		575,980
	Loans acquired, covered by FDIC loss share		106,933			--			--			--			--		106,933
	Total	$	2,642,549		$	11,938		$	80,152		$	1,990		$	5	$	2,736,634
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Table Text Block]	(in thousands)	Not Impaired			Impaired
	Contractually required principal and interest at acquisition	$	774,777		$	15,716
	Non-accretable difference (expected losses and foregone interest)		--			(4,978	)
	Cash flows expected to be collected at acquisition		774,777			10,738
	Accretable yield		(4,869	)		12
	Basis in acquired loans at acquisition	$	769,908		$	10,750
	(in thousands)	Not Impaired			Impaired
	Contractually required principal and interest at acquisition	$	1,153,255		$	10,143
	Non-accretable difference (expected losses and foregone interest)		--			(3,247	)
	Cash flows expected to be collected at acquisition		1,153,255			6,896
	Accretable yield		(23,712	)		104
	Basis in acquired loans at acquisition	$	1,129,543		$	7,000
Tabular Temporal Display of Adjustments Related to Purchased Covered Impaired Loans [Table Text Block]		Three Months Ended
		March 31,
	(In thousands)	2015			2014
	Impact on net interest income	$	6,102		$	7,391
	Non-interest income		(2,745	)		(7,441	)
	Net impact to pre-tax income		3,357			(50	)
	Net impact, net of taxes	$	2,040		$	(30	)
Tabular Temporal Display of Accretable Yield [Table Text Block]		Three Months Ended						Three Months Ended
		31-Mar-15						31-Mar-14
	(In thousands)	Accretable			Carrying			Accretable			Carrying
		Yield			Amount of			Yield			Amount of
					Loans						Loans
	Beginning balance	$	20,635		$	169,098		$	41,385		$	234,785
	Additions		(116	)		17,750			--			--
	Accretable yield adjustments		3,074			--			1,483			--
	Accretion		(6,367	)		6,367			(9,326	)		9,326
	Payments and other reductions, net		--			(15,524	)		--			(25,579	)
	Balance, ending	$	17,226		$	177,691		$	33,542		$	218,532
Summary of the Changes in the FDIC True-Up Provision [Table Text Block]		Three Months Ended
		March 31,
	(In thousands)	2015			2014
	Beginning balance	$	8,308		$	6,768
	Amortization expense		40			43
	Adjustments related to changes in expected losses		254			442
	Balance, ending	$	8,602		$	7,253
Acquired Loans [Member]
Note 5 - Loans Acquired (Tables) [Line Items]
Schedule of Financing Receivables, Non Accrual Status [Table Text Block]	(In thousands)	March 31,			December 31,
		2015			2014
	Consumer:
	Other consumer	$	22		$	29
	Total consumer		22			29
	Real estate:
	Construction		336			105
	Single family residential		1,452			2,018
	Other commercial		2,046			271
	Total real estate		3,834			2,394
	Commercial:
	Commercial		591			291
	Agricultural		126			3
	Total commercial		717			294
	Total	$	4,573		$	2,717
Past Due Financing Receivables [Table Text Block]	(In thousands)	Gross			90 Days			Total			Current			Total		90 Days
		30-89 Days			or More			Past Due						Loans		Past Due &
		Past Due			Past Due											Accruing
	31-Mar-15
	Consumer:
	Other consumer	$	296		$	91		$	387		$	130,779		$	131,166	$	11
	Total consumer		296			91			387			130,779			131,166		11
	Real estate:
	Construction		604			111			715			149,015			149,730		--
	Single family residential		5,179			4,522			9,701			679,850			689,551		1,552
	Other commercial		5,409			8,469			13,878			1,097,724			1,111,601		--
	Total real estate		11,192			13,102			24,294			1,926,588			1,950,882		1,552
	Commercial:
	Commercial		2,509			1,221			3,790			303,172			306,902		186
	Agricultural		1,089			--			1,089			21,447			22,536		--
	Total commercial		3,598			1,221			4,819			324,619			329,438		186
	Other		--			--			--			6,954			6,954		--
	Total	$	15,086		$	14,414		$	29,500		$	2,388,940		$	2,418,440	$	1,749
	31-Dec-14
	Consumer:
	Other consumer	$	70		$	34		$	104		$	8,407		$	8,511	$	5
	Total consumer		70			34			104			8,407			8,511		5
	Real estate:
	Construction		292			105			397			36,450			36,847		--
	Single family residential		3,804			2,906			6,710			138,383			145,093		594
	Other commercial		1,415			5,994			7,409			326,759			334,168		--
	Total real estate		5,511			9,005			14,516			501,592			516,108		594
	Commercial:
	Commercial		110			421			531			46,730			47,261		--
	Agricultural		--			--			--			4,100			4,100		--
	Total commercial		110			421			531			51,360			51,361		--
	Total	$	5,691		$	9,460		$	15,151		$	560,829		$	575,980	$	599
Financing Receivable Credit Quality Indicators [Table Text Block]	(In thousands)	Risk Rate			Risk Rate			Risk Rate			Risk Rate			Risk Rate		Total
		4-Jan			5			6			7			8
	31-Mar-15
	Consumer:
	Other consumer	$	130,750		$	--		$	416		$	--		$	--	$	131,166
	Total consumer		130,750			--			416			--			--		131,166
	Real estate:
	Construction		139,843			2,602			7,285			--			--		149,730
	Single family residential		666,400			10,289			10,720			2,114			28		689,551
	Other commercial		1,074,127			10,812			26,662			--			--		1,111,60
	Total real estate		1,880,370			23,703			44,667			2,114			28		1,950,882
	Commercial:
	Commercial		294,464			3,135			9,258			45			--		306,902
	Agricultural		20,489			157			1,890			--			--		22,536
	Total commercial		314,953			3,292			11,148			45			--		329,438
	Other		6,906			48			--			--			--		6,954
	Total	$	2,332,979		$	27,043		$	56,231		$	2,159		$	28	$	2,418,440
	31-Dec-14
	Consumer:
	Other consumer	$	8,479		$	--		$	32		$	--		$	--	$	8,511
	Total consumer		8,479			--			32			--			--		8,511
	Real estate:
	Construction		27,430			78			9,339			--			--		36,847
	Single family residential		135,240			683			7,311			1,854			5		145,093
	Other commercial		317,965			605			15,598			--			--		334,168
	Total real estate		480,635			1,366			32,248			1,854			5		516,108
	Commercial:
	Commercial		43,585			69			3,607			--			--		47,261
	Agricultural		3,030			-			1,070			--			--		4,100
	Total commercial		46,615			69			4,677			--			--		51,361
	Total	$	535,729		$	1,435		$	36,957		$	1,854		$	5	$	575,980

Note_6_Goodwill_and_Other_Inta1

Note 6 - Goodwill and Other Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2015
Note 6 - Goodwill and Other Intangible Assets (Tables) [Line Items]
Schedule of Intangible Assets and Goodwill [Table Text Block]	(In thousands)		March 31,			December 31,
			2015			2014
	Goodwill		$	314,643		$	108,095
	Core deposit premiums:
	Gross carrying amount			44,030			18,318
	Accumulated amortization			(2,939	)		(2,386	)
	Core deposit premiums, net			41,091			15,932
	Purchased credit card relationships:
	Gross carrying amount			2,068			2,068
	Accumulated amortization			(621	)		(517	)
	Purchased credit card relationships, net			1,447			1,551
	Books of business intangible:
	Gross carrying amount			5,560			5,140
	Accumulated amortization			(211	)		(97	)
	Books of business intangible, net			5,349			5,043
	Other intangible assets, net			47,887			22,526
	Total goodwill and other intangible assets		$	362,530		$	130,621
Core Deposit Premium [Member]
Note 6 - Goodwill and Other Intangible Assets (Tables) [Line Items]
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	(In thousands)	Year		Amortization
				Expense
		2015		$	3,302
		2016			4,400
		2017			4,400
		2018			4,400
		2019			4,400
		Thereafter			20,189
		Total		$	41,091
	(In thousands)	Year		Amortization
				Expense
		2015		$	310
		2016			414
		2017			414
		2018			309
		Total		$	1,447
	(In thousands)	Year		Amortization
				Expense
		2015		$	300
		2016			427
		2017			427
		2018			427
		2019			427
		Thereafter			3,341
		Total		$	5,349

Note_8_Income_Taxes_Tables

Note 8 - Income Taxes (Tables)	3 Months Ended
	Mar. 31, 2015
Income Tax Disclosure [Abstract]
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]		March 31,			March 31,
	(In thousands)	2015			2014
	Income taxes currently payable	$	5,760		$	3,599
	Deferred income taxes		(1,578	)		(2,667	)
	Provision for income taxes	$	4,182		$	932
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]	(In thousands)	March 31,			December 31,
		2015			2014
	Deferred tax assets:
	Loans acquired	$	31,413		$	16,925
	FDIC true-up liability		2,797			2,792
	Allowance for loan losses		11,444			11,749
	Valuation of foreclosed assets		15,420			14,167
	Tax NOLs from acquisition		11,819			11,819
	Deferred compensation payable		2,533			1,536
	Vacation compensation		1,630			1,456
	Accumulated depreciation		--			1,937
	Loan interest		2,099			1,693
	Accrued pension and profit sharing		1,793			1,793
	Accrued equity and other compensation		4,814			3,356
	Acquired securities		2,083			2,568
	Accrued merger related costs		2,730			2,464
	Basis difference in partnership investments		812			617
	Unrealized loss on available-for-sale securities		--			862
	Other		3,173			1,666
	Gross deferred tax assets		94,560			77,400
	Deferred tax liabilities:
	Goodwill and other intangible amortization		(25,780	)		(16,953	)
	FDIC acquired assets		(1,754	)		(4,377	)
	Deferred loan fee income and expenses, net		(1,663	)		(1,515	)
	FHLB stock dividends		(2,227	)		(1,160	)
	Limitations under IRC Sec 382		(10,839	)		(11,169	)
	Prepayment liabilities		(1,979	)		(1,141	)
	Accumulated depreciation		(402	)		--
	Unrealized gain on available-for-sale securities		(1,197	)		--
	Other		(545	)		(337	)
	Gross deferred tax liabilities		(46,386	)		(36,652	)
	Net deferred tax asset, included in other assets	$	48,174		$	40,748
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	(In thousands)	March 31,			March 31,
		2015			2014
	Computed at the statutory rate (35%)	$	4,504		$	1,849
	Increase (decrease) in taxes resulting from:
	State income taxes, net of federal tax benefit		308			47
	Tax exempt interest income		(1,024	)		(933	)
	Tax exempt earnings on BOLI		(152	)		(115	)
	Other differences, net		546			84
	Actual tax provision	$	4,182		$	932

Note_9_Other_Borrowings_and_Su1

Note 9 - Other Borrowings and Subordinated Debentures (Tables)	3 Months Ended
	Mar. 31, 2015
Debt Disclosure [Abstract]
Schedule of Debt [Table Text Block]	(In thousands)		31-Mar-15			December 31,
						2014
	Other Borrowings
	FHLB advances, due 2015 to 2033, 0.35% to 7.38% secured by residential real estate loans		$	241,960		$	71,582
	Notes payable, due 04/30/2015 to 12/31/2016, 3.25%, floating rate, unsecured			43,100			43,100
				285,060			114,682
	Subordinated Debentures
	Trust preferred securities, due 12/30/2033, floating rate of 2.80% above the three month LIBOR rate, reset quarterly, callable without penalty			20,620			20,620
	Trust preferred securities, due 6/30/2035, floating rate of 1.75% above the three month LIBOR rate, reset quarterly, callable without penalty			11,444			-
	Trust preferred securities, due 9/15/2037, floating rate of 1.37% above the three month LIBOR rate, reset quarterly			10,310			-
	Trust preferred securities, due 12/3/2033, floating rate of 2.88% above the three month LIBOR rate, reset quarterly, callable without penalty			5,155			-
	Trust preferred securities, due 12/13/2034, floating rate of 2.00% above the three month LIBOR rate, reset quarterly, callable without penalty			5,155			-
	Trust preferred securities, due 6/6/2037, floating rate of 1.57% above the three month LIBOR rate, reset quarterly, callable without penalty			10,310			-
				62,994			20,620
	Total other borrowings and subordinated debentures		$	348,054		$	135,302
Schedule of Maturities of Long-term Debt [Table Text Block]	(In thousands)	Year		Annual
				Maturities
		2015		$	149,016
		2016			38,348
		2017			75,417
		2018			6,558
		2019			2,743
		Thereafter			75,972
		Total		$	348,054

Note_13_Stock_Based_Compensati1

Note 13 - Stock Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]			Stock Options						Non-Vested Stock
			Outstanding						Awards Outstanding
			Number			Weighted			Number			Weighted
			of			Average			of			Average
			Shares			Exercise			Shares			Grant-Date
						Price						Fair-Value
	Balance, January 1, 2015			119,690		$	27.72			226,932		$	31.88
	Granted			113,695			42.76			57,225			41.02
	Stock Options Exercised			(10,410	)		26.9			--			--
	Stock Awards Vested			--			--			(79,984	)		40.31
	Forfeited/Expired			--			--			(9,500	)		39.56
	Balance, March 31, 2015			222,975		$	35.42			194,673		$	30.73
	Exercisable, March 31, 2015			109,280		$	27.79
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]					Options Outstanding								Options Exercisable
	Range of				Number		Weighted			Weighted			Number	Weighted
	Exercise Prices				of Shares		Average			Average			of Shares	Average
							Remaining			Exercise				Exercise
							Contractual			Price				Price
							Life (Years)
	$24.50	-	$24.50		15,250			0.15		$	24.5		15,250	$	24.5
	26.19	-	27.67		30,600			1.13			26.21		30,600		26.21
	28.42	-	28.42		32,300			2.16			28.42		32,300		28.42
	30.31	-	30.31		31,130			3.16			30.31		31,130		30.31
	40.57	-	40.57		48,690			9.75			40.57		--		--
	44.4	-	44.4		65,005			9.98			44.4		--		--

Note_14_Additional_Cash_Flow_I1

Note 14 - Additional Cash Flow Information (Tables)	3 Months Ended
	Mar. 31, 2015
Supplemental Cash Flow Elements [Abstract]
Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]		Three Months Ended
		March 31,
	(In thousands)	2015		2014
	Interest paid	$	3,372	$	3,447
	Income taxes paid		7,274		1,266
	Transfers of loans not covered by FDIC loss share to foreclosed assets held for sale		2,774		1,386
	Transfers of loans acquired, covered by FDIC loss share, to foreclosed assets covered by FDIC loss share		435		520
	Transfers of premises held for sale to foreclosed assets held for sale		6,126		--

Note_15_Other_Operating_Expens1

Note 15 - Other Operating Expenses (Tables)	3 Months Ended
	Mar. 31, 2015
Other Income and Expenses [Abstract]
Schedule of Other Operating Cost and Expense, by Component [Table Text Block]		Three Months Ended
		March 31,
	(In thousands)	2015		2014
	Professional services	$	1,804	$	1,354
	Postage		933		915
	Telephone		861		701
	Credit card expense		1,989		1,706
	Operating supplies		454		516
	Amortization of intangibles		899		453
	Branch right sizing expense		35		3,878
	Other expense		5,131		3,847
	Total other operating expenses	$	12,106	$	13,370

Note_19_Fair_Value_Measurement1

Note 19 - Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value, Assets Measured on Recurring Basis [Table Text Block]				Fair Value Measurements Using
	(In thousands)	Fair Value		Quoted Prices in		Significant Other		Significant
				Active Markets for		Observable Inputs		Unobservable Inputs
				Identical Assets		(Level 2)		(Level 3)
				(Level 1)
	31-Mar-15
	ASSETS
	Available-for-sale securities
	U.S. Treasury	$	4,008	$	-	$	4,008	$	-
	U.S. Government agencies		346,315		-		346,315		-
	Mortgage-backed securities		312,011		-		312,011		-
	State and political subdivisions		13,452		-		13,452		-
	Other securities		31,597		-		31,597		-
	Assets held in trading accounts		6,528		2,809		3,719		-
	31-Dec-14
	ASSETS
	Available-for-sale securities
	U.S. Treasury	$	3,992	$	-	$	3,992	$	-
	U.S. Government agencies		272,816		-		272,816		-
	Mortgage-backed securities		1,572		-		1,572		-
	State and political subdivisions		6,540		-		6,540		-
	Other securities		20,363		-		20,363		-
	Assets held in trading accounts		6,987		3,320		3,667		-
Fair Value Measurements, Nonrecurring [Table Text Block]				Fair Value Measurements Using
	(In thousands)	Fair Value		Quoted Prices in		Significant Other		Significant
				Active Markets for		Observable Inputs		Unobservable Inputs
				Identical Assets		(Level 2)		(Level 3)
				(Level 1)
	31-Mar-15
	ASSETS
	Impaired loans (1) (2) (collateral dependent)	$	14,731	$	-	$	-	$	14,731
	Foreclosed assets held for sale (1)		2.029		-		-		2,029
	31-Dec-14
	ASSETS
	Impaired loans (1) (2) (collateral dependent)	$	12,276	$	-	$	-	$	12,276
	Foreclosed assets held for sale (1)		3,417		-		-		3,417
Fair Value, by Balance Sheet Grouping [Table Text Block]		Carrying		Fair Value Measurements
	(In thousands)	Amount		Level 1		Level 2		Level 3		Total
	31-Mar-15
	Financial assets:
	Cash and cash equivalents	$	685,828	$	685,828	$	--	$	--	$	685,828
	Interest bearing balances due from banks - time		25,000		--		24,986		--		24,986
	Held-to-maturity securities		902,423		--		913,037		--		913,037
	Mortgage loans held for sale		25,513		--		--		25,513		25,513
	Interest receivable		24,719		--		24,719		--		24,719
	Legacy loans, net		2,086,197		--		--		2,095,657		2,095,657
	Loans acquired, not covered by FDIC loss share		2,418,440		--		--		2,429,407		2,429,407
	Loans acquired, covered by FDIC loss share		102,468		--		--		102,933		102,933
	FDIC indemnification asset		15,965		--		--		15,965		15,965
	Financial liabilities:
	Non-interest bearing transaction accounts		1,123,966		--		1,123,966		--		1,123,966
	Interest bearing transaction accounts and savings deposits		3,627,870		--		3,627,870		--		3,627,870
	Time deposits		1,522,872		--		--		1,523,149		1,523,149
	Federal funds purchased and securities sold under agreements to repurchase		111,484		--		111,484		--		111,484
	Other borrowings		285,060		--		288,198		--		288,198
	Subordinated debentures		62,994		--		58,039		--		58,039
	Interest payable		2,445		--		2,445		--		2,445
	31-Dec-14
	Financial assets:
	Cash and cash equivalents	$	335,909	$	335,909	$	--	$	--	$	335,909
	Held-to-maturity securities		777,587		--		780,533		--		780,533
	Mortgage loans held for sale		21,265		--		--		21,265		21,265
	Interest receivable		16,774		--		16,774		--		16,774
	Legacy loans		2,024,693		--		--		2,022,889		2,022,889
	Loans acquired, not covered by FDIC loss share		575,980		--		--		560,651		560,651
	Loans acquired, covered by FDIC loss share		106,933		--		--		105,789		105,789
	FDIC indemnification asset		22,663		--		--		22,663		22,663
	Financial liabilities:
	Non-interest bearing transaction accounts		889,260		--		889,260		--		889,260
	Interest bearing transaction accounts and savings deposits		2,006,271		--		2,006,271		--		2,006,271
	Time deposits		965,187		--		--		967,900		967,900
	Federal funds purchased and securities sold under agreements to repurchase		110,586		--		110,586		--		110,586
	Other borrowings		114,682		--		114,698		--		114,698
	Subordinated debentures		20,620		--		16,115		--		16,115
	Interest payable		1,147		--		1,147		--		1,147

Note_1_Basis_of_Presentation_D

Note 1 - Basis of Presentation (Details) (Subsequent Event [Member], Ozark Trust & Investment Corporation [Member], USD $)	0 Months Ended
In Thousands, except Share data, unless otherwise specified	Apr. 28, 2015
Note 1 - Basis of Presentation (Details) [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets	1,000,000
Business Combination, Consideration Transferred	20,700
Employee Stock Option [Member]
Note 1 - Basis of Presentation (Details) [Line Items]
Business Combination, Step Acquisition, Equity Interest in Acquiree	1,000
Banks or Bank Holding Companies [Member]
Note 1 - Basis of Presentation (Details) [Line Items]
Business Combination, Stock Conversion, Cash Issued	701.9268
Any Other Type of Shareholder [Member]
Note 1 - Basis of Presentation (Details) [Line Items]
Business Combination, Stock Conversion, Shares issued	16.7205

Note_1_Basis_of_Presentation_D1

Note 1 - Basis of Presentation (Details) - Earnings Per Share (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Earnings Per Share [Abstract]
Net income available to common shareholders (in Dollars)	$8,709	$4,352
Average common shares outstanding	22,258	16,270
Average potential dilutive common shares	92	40
Average diluted common shares	22,350	16,310
Basic earnings per common share (in Dollars per share)	$0.39	$0.27
Diluted earnings per common share (in Dollars per share)	$0.39	$0.27

Note_2_Acquisitions_Details

Note 2 - Acquisitions (Details) (USD $)	0 Months Ended	3 Months Ended
	Feb. 27, 2015	Mar. 31, 2015	Dec. 31, 2014
Note 2 - Acquisitions (Details) [Line Items]
Deposits		$6,274,708,000	$3,860,718,000
Goodwill		314,643,000	108,095,000
Preferred Stock [Member] | Community First Bancshares, Inc. [Member]
Note 2 - Acquisitions (Details) [Line Items]
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned	30,900,000
Acquisition-related Costs Excluded [Member] | Community First Bancshares, Inc. [Member]
Note 2 - Acquisitions (Details) [Line Items]
Revenues	7,400,000
Liberty Bancshares, Inc. [Member]
Note 2 - Acquisitions (Details) [Line Items]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in Shares)	5,181,337
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned	212,200,000
Number of Bank Branches	23
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets	1,067,077,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Loans Acquired Not Covered by FDIC Loss Share	780,658,000
Deposits	874,700,000
Goodwill	94,912,000
Business Combination, Percentage of Fair Value Adjustment, Deferred Tax Asset	39.23%
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual		4,700,000
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual		1,500,000
Community First Bancshares, Inc. [Member]
Note 2 - Acquisitions (Details) [Line Items]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in Shares)	6,552,915
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned	268,300,000
Number of Bank Branches	33
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Loans Acquired Not Covered by FDIC Loss Share	1,100,000,000
Deposits	1,500,000,000
Goodwill	111,600,000
Business Combination, Percentage of Fair Value Adjustment, Deferred Tax Asset	39.23%
Payments to Acquire Businesses, Gross	9,974
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets, Net	1,900,000,000
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual		8,200,000
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual		$2,200,000

Note_2_Acquisitions_Details_As

Note 2 - Acquisitions (Details) - Assets Acquired and Liabilities Assumed (USD $)	0 Months Ended
In Thousands, unless otherwise specified	Feb. 27, 2015	Mar. 31, 2015	Dec. 31, 2014
Deposits:
Goodwill		$314,643	$108,095
Cost Acquired [Member] | Liberty Bancshares, Inc. [Member]
Note 2 - Acquisitions (Details) - Assets Acquired and Liabilities Assumed [Line Items]
Cash and due from banks	102,637
Federal funds sold	7,060
Investment securities	99,123
Loans acquired, not covered by FDIC loss share	790,493
Allowance for loan losses	-10,422
Premises and equipment	34,239
Bank owned life insurance	16,972
Core deposit intangible	699
Other intangibles	3,063
Other assets	17,703
Total assets acquired	1,061,567
Deposits:
Non-interest bearing transaction accounts	146,618
Interest bearing transaction accounts and savings deposits	543,183
Time deposits	184,913
Total deposits	874,714
FHLB borrowings	46,128
Subordinated debentures	20,620
Accrued interest and other liabilities	7,828
Total liabilities assumed	949,290
Equity	112,277
Total liabilities and equity assumed	1,061,567
Cost Acquired [Member] | Delta Trust [Member]
Note 2 - Acquisitions (Details) - Assets Acquired and Liabilities Assumed [Line Items]
Cash and due from banks	39,848
Federal funds sold	76,508
Investment securities	570,199
Loans acquired, not covered by FDIC loss share	1,163,398
Allowance for loan losses	-14,635
Foreclosed assets not covered by FDIC loss share	747
Premises and equipment	44,837
Bank owned life insurance	22,149
Deferred tax asset	3,700
Other assets	11,474
Total assets acquired	1,918,325
Deposits:
Non-interest bearing transaction accounts	103,825
Interest bearing transaction accounts and savings deposits	995,207
Time deposits	436,181
Total deposits	1,535,213
Federal funds purchased and securities sold under agreement to repurchase	16,230
FHLB borrowings	143,047
Subordinated debentures	21,754
Accrued interest and other liabilities	8,769
Total liabilities assumed	1,725,013
Equity	193,312
Total liabilities and equity assumed	1,918,325
Goodwill	100
Fair Value Adjustments [Member] | Liberty Bancshares, Inc. [Member]
Note 2 - Acquisitions (Details) - Assets Acquired and Liabilities Assumed [Line Items]
Cash and due from banks	-14
Investment securities	-335
Loans acquired, not covered by FDIC loss share	-9,835
Allowance for loan losses	10,422
Premises and equipment	-1,229
Core deposit intangible	13,857
Other intangibles	-3,063
Other assets	-4,293
Total assets acquired	5,510
Deposits:
FHLB borrowings	223
Accrued interest and other liabilities	300
Total liabilities assumed	523
Equity	-112,277
Total liabilities and equity assumed	-111,754
Fair Value Adjustments [Member] | Delta Trust [Member]
Note 2 - Acquisitions (Details) - Assets Acquired and Liabilities Assumed [Line Items]
Investment securities	-3,381
Loans acquired, not covered by FDIC loss share	-26,855
Allowance for loan losses	14,635
Premises and equipment	-2,794
Core deposit intangible	11,273
Other intangibles	420
Deferred tax asset	3,866
Total assets acquired	-2,936
Deposits:
Time deposits	849
Total deposits	849
FHLB borrowings	1,347
Accrued interest and other liabilities	601
Total liabilities assumed	2,797
Equity	-193,312
Total liabilities and equity assumed	-190,515
Goodwill	-100
Liberty Bancshares, Inc. [Member]
Note 2 - Acquisitions (Details) - Assets Acquired and Liabilities Assumed [Line Items]
Cash and due from banks	102,623
Federal funds sold	7,060
Investment securities	98,788
Loans acquired, not covered by FDIC loss share	780,658
Premises and equipment	33,010
Bank owned life insurance	16,972
Core deposit intangible	14,556
Other assets	13,410
Total assets acquired	1,067,077
Deposits:
Non-interest bearing transaction accounts	146,618
Interest bearing transaction accounts and savings deposits	543,183
Time deposits	184,913
Total deposits	874,714
FHLB borrowings	46,351
Subordinated debentures	20,620
Accrued interest and other liabilities	8,128
Total liabilities assumed	949,813
Total liabilities and equity assumed	949,813
Net assets acquired	117,264
Purchase price	212,176
Goodwill	94,912
Delta Trust [Member]
Note 2 - Acquisitions (Details) - Assets Acquired and Liabilities Assumed [Line Items]
Cash and due from banks	39,848
Federal funds sold	76,508
Investment securities	566,818
Loans acquired, not covered by FDIC loss share	1,136,543
Foreclosed assets not covered by FDIC loss share	747
Premises and equipment	42,043
Bank owned life insurance	22,149
Core deposit intangible	11,273
Other intangibles	420
Deferred tax asset	7,566
Other assets	11,474
Total assets acquired	1,915,389
Deposits:
Non-interest bearing transaction accounts	103,825
Interest bearing transaction accounts and savings deposits	995,207
Time deposits	437,030
Total deposits	1,536,062
Federal funds purchased and securities sold under agreement to repurchase	16,230
FHLB borrowings	144,394
Subordinated debentures	21,754
Accrued interest and other liabilities	9,370
Total liabilities assumed	1,727,810
Total liabilities and equity assumed	1,727,810
Net assets acquired	187,580
Purchase price	299,204
Goodwill	$111,624

Note_2_Acquisitions_Details_Pr

Note 2 - Acquisitions (Details) - Pro forma information (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015		Mar. 31, 2014
Pro forma information [Abstract]
Revenue (1)	$97,265	[1]	$90,843	[1]
Net income	$23,273		$5,444
Earnings per share (in Dollars per share)	$0.78		$0.19
[1]	Net interest income plus noninterest income.

Note_3_Investment_Securities_D

Note 3 - Investment Securities (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Investments, Debt and Equity Securities [Abstract]
Securities Continuous Unrealized Loss Position Fair Value	$537,200,000
Securities Continuous Unrealized Loss Position Fair Value Percent of Portfolio	33.40%
Securities Sold under Agreements to Repurchase	104,400,000		93,500,000
Available-for-sale Securities Pledged as Collateral	888,600,000		520,400,000
Available-for-sale Securities, Gross Realized Gains	2,000	0
Available-for-sale Securities, Gross Realized Losses	$40,000	$0

Note_3_Investment_Securities_D1

Note 3 - Investment Securities (Details) - Investment Securities (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Held-to-Maturity
Held-to-maturity, amortized cost	$902,423	$777,587
Held-to-maturity, gross unrealized gains	12,012	7,985
Held-to-maturity, gross unrealized (losses)	-1,398	-5,039
Held-to-maturity, estimated fair value	913,037	780,533
Available-for-Sale
Available-for-sale, amortized cost	704,331	307,481
Available-for-sale, gross unrealized gains	4,679	409
Available-for-sale, gross unrealized (losses)	-1,627	-2,607
Available-for-sale, estimated fair value	707,383	305,283
US Government Agencies Debt Securities [Member]
Held-to-Maturity
Held-to-maturity, amortized cost	390,625	418,914
Held-to-maturity, gross unrealized gains	1,935	929
Held-to-maturity, gross unrealized (losses)	-1,043	-4,055
Held-to-maturity, estimated fair value	391,517	415,788
Available-for-Sale
Available-for-sale, amortized cost	346,786	275,381
Available-for-sale, gross unrealized gains	355	15
Available-for-sale, gross unrealized (losses)	-826	-2,580
Available-for-sale, estimated fair value	346,315	272,816
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Held-to-Maturity
Held-to-maturity, amortized cost	28,535	29,743
Held-to-maturity, gross unrealized gains	276	56
Held-to-maturity, gross unrealized (losses)	-145	-411
Held-to-maturity, estimated fair value	28,666	29,388
Available-for-Sale
Available-for-sale, amortized cost	308,333	1,579
Available-for-sale, gross unrealized gains	3,748
Available-for-sale, gross unrealized (losses)	-70	-7
Available-for-sale, estimated fair value	312,011	1,572
US States and Political Subdivisions Debt Securities [Member]
Held-to-Maturity
Held-to-maturity, amortized cost	482,316	328,310
Held-to-maturity, gross unrealized gains	9,807	7,000
Held-to-maturity, gross unrealized (losses)	-210	-573
Held-to-maturity, estimated fair value	491,907	334,737
Available-for-Sale
Available-for-sale, amortized cost	13,342	6,536
Available-for-sale, gross unrealized gains	110	7
Available-for-sale, gross unrealized (losses)		-3
Available-for-sale, estimated fair value	13,452	6,540
Other Securities [Member]
Held-to-Maturity
Held-to-maturity, amortized cost	947	620
Held-to-maturity, estimated fair value	947	620
Available-for-Sale
Available-for-sale, amortized cost	31,870	19,985
Available-for-sale, gross unrealized gains	458	386
Available-for-sale, gross unrealized (losses)	-731	-8
Available-for-sale, estimated fair value	31,597	20,363
US Treasury Securities [Member]
Available-for-Sale
Available-for-sale, amortized cost	4,000	4,000
Available-for-sale, gross unrealized gains	8	1
Available-for-sale, gross unrealized (losses)		-9
Available-for-sale, estimated fair value	$4,008	$3,992

Note_3_Investment_Securities_D2

Note 3 - Investment Securities (Details) - Securities with Unrealized Losses (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015
Held-to-Maturity
Held-to-maturity, less than 12 months, estimated fair value	$165,068
Held-to-maturity, less than 12 months, gross unrealized losses	-788
Held-to-maturity, 12 months or more, estimated fair value	82,358
Held-to-maturity, 12 months or more, gross unrealized losses	-610
Held-to-maturity, total, estimated fair value	247,426
Held-to-maturity, total, gross unrealized losses	-1,398
Available-for-Sale
Available-for-sale, less than 12 months, estimated fair value	210,446
Available-for-sale, less than 12 months, gross unrealized losses	-1,301
Available-for-sale, 12 months or more, estimated fair value	79,311
Available-for-sale, 12 months or more, gross unrealized losses	-326
Available-for-sale, estimated fair value	289,757
Available-for-sale, gross unrealized losses	-1,627
US Government Agencies Debt Securities [Member]
Held-to-Maturity
Held-to-maturity, less than 12 months, estimated fair value	131,872
Held-to-maturity, less than 12 months, gross unrealized losses	-589
Held-to-maturity, 12 months or more, estimated fair value	70,543
Held-to-maturity, 12 months or more, gross unrealized losses	-454
Held-to-maturity, total, estimated fair value	202,415
Held-to-maturity, total, gross unrealized losses	-1,043
Available-for-Sale
Available-for-sale, less than 12 months, estimated fair value	196,571
Available-for-sale, less than 12 months, gross unrealized losses	-500
Available-for-sale, 12 months or more, estimated fair value	79,311
Available-for-sale, 12 months or more, gross unrealized losses	-326
Available-for-sale, estimated fair value	275,882
Available-for-sale, gross unrealized losses	-826
Collateralized Mortgage Backed Securities [Member]
Held-to-Maturity
Held-to-maturity, less than 12 months, estimated fair value	1,902
Held-to-maturity, less than 12 months, gross unrealized losses	-13
Held-to-maturity, 12 months or more, estimated fair value	8,895
Held-to-maturity, 12 months or more, gross unrealized losses	-132
Held-to-maturity, total, estimated fair value	10,797
Held-to-maturity, total, gross unrealized losses	-145
Available-for-Sale
Available-for-sale, less than 12 months, estimated fair value	12,300
Available-for-sale, less than 12 months, gross unrealized losses	-70
Available-for-sale, estimated fair value	12,300
Available-for-sale, gross unrealized losses	-70
US States and Political Subdivisions Debt Securities [Member]
Held-to-Maturity
Held-to-maturity, less than 12 months, estimated fair value	31,294
Held-to-maturity, less than 12 months, gross unrealized losses	-186
Held-to-maturity, 12 months or more, estimated fair value	2,920
Held-to-maturity, 12 months or more, gross unrealized losses	-24
Held-to-maturity, total, estimated fair value	34,214
Held-to-maturity, total, gross unrealized losses	-210
Equity Securities [Member]
Available-for-Sale
Available-for-sale, less than 12 months, estimated fair value	515
Available-for-sale, less than 12 months, gross unrealized losses	-2
Available-for-sale, estimated fair value	515
Available-for-sale, gross unrealized losses	-2
Other Securities [Member]
Available-for-Sale
Available-for-sale, less than 12 months, estimated fair value	1,060
Available-for-sale, less than 12 months, gross unrealized losses	-729
Available-for-sale, estimated fair value	1,060
Available-for-sale, gross unrealized losses	($729)

Note_3_Investment_Securities_D3

Note 3 - Investment Securities (Details) - Income Earned on Securities (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Non-taxable:
Total	$5,879	$4,549
Held-to-Maturity Securities [Member]
Taxable:
Taxable Investment Income	1,389	1,349
Non-taxable:
Non-taxable Investment Income	2,602	2,619
Available-for-sale Securities [Member]
Taxable:
Taxable Investment Income	1,583	550
Non-taxable:
Non-taxable Investment Income	$305	$31

Note_3_Investment_Securities_D4

Note 3 - Investment Securities (Details) - Maturities of Investment Securities (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Maturities of Investment Securities [Abstract]
One year or less	$41,310
One year or less	41,392
One year or less	58,762
One year or less	58,752
After one through five years	414,115
After one through five years	414,863
After one through five years	247,200
After one through five years	246,659
After five through ten years	182,259
After five through ten years	185,229
After five through ten years	123,795
After five through ten years	124,808
After ten years	264,739
After ten years	271,553
After ten years	243,476
After ten years	246,322
Other securities (no maturity)	31,098
Other securities (no maturity)	30,842
Total	902,423	777,587
Total	913,037	780,533
Total	704,331	307,481
Total	$707,383	$305,283

Note_4_Loans_and_Allowance_for2

Note 4 - Loans and Allowance for Loan Losses (Details) (USD $)	3 Months Ended			12 Months Ended
	Mar. 31, 2015		Mar. 31, 2014	Dec. 31, 2014
Note 4 - Loans and Allowance for Loan Losses (Details) [Line Items]
Loans and Leases Receivable, Gross	$4,640,000,000			$2,740,000,000
Impaired Financing Receivable, Recorded Investment	16,915,000			14,669,000
Impaired Financing Receivable, Related Allowance	2,110,000			2,065,000
Impaired Financing Receivable, Interest Income, Accrual Method	250,000		206,000
Impaired Financing Receivable, Average Recorded Investment	15,793,000		18,624,000
Financing Receivable, Modifications, Number of Contracts	2		1
Financing Receivable, Modifications, Pre-Modification Recorded Investment	348,000		1,031,000
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0		0
Acquired Impaired Loans, Carrying Value		[1]		682,913,000	[1]
Loans And Leases Receivable Classified	15,700,000			16,600,000
Covered Purchased Impaired Loans, Allowance	1,000,000			1,000,000
Provision for Loan Losses, Net of FDIC Loss Share Adjustments				400,000
Restructured During Current Period [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) [Line Items]
Financing Receivable, Modifications, Number of Contracts	2		1
Financing Receivable, Modifications, Pre-Modification Recorded Investment	348,000
Restructured Loan [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) [Line Items]
Financing Receivable, Modifications, Pre-Modification Recorded Investment			1,031,000
Risk Ratings 6,7, and 8 [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) [Line Items]
Loans And Leases Receivable Classified	105,000,000			82,100,000
Liberty, Community First, Metropolitan and Delta Trust Acquisitions [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) [Line Items]
Acquired Impaired Loans, Carrying Value	$36,000,000			$22,300,000
[1]	Loans acquired include $102.5 million and $106.9 million (each net of $1.0 million allowance) of loans covered by FDIC loss share agreements at March 31, 2015 and December 31, 2014, respectively.

Note_4_Loans_and_Allowance_for3

Note 4 - Loans and Allowance for Loan Losses (Details) - Loan Portfolio by Categories (USD $)	Mar. 31, 2015		Dec. 31, 2014
In Thousands, unless otherwise specified
Consumer:
Loans	$4,640,000		$2,740,000
Loans acquired, not covered by FDIC loss share (net of discount) (1)	2,418,440	[1]	575,980	[1]
Loans acquired, covered by FDIC loss share (net of discount and allowance) (1)	102,468	[1]	106,933	[1]
Credit Cards [Member]
Consumer:
Loans	171,413		185,380
Other Consumer [Member]
Consumer:
Loans	107,486		103,402
Consumer Loans [Member]
Consumer:
Loans	278,899		288,782
Construction Loans [Member]
Consumer:
Loans	178,929		181,968
Single Family Residential Loans [Member]
Consumer:
Loans	467,671		455,563
Other Commercial Real Estate Loans [Member]
Consumer:
Loans	755,701		714,797
Real Estate Loans [Member]
Consumer:
Loans	1,402,301		1,352,328
Other Commercial Loans [Member]
Consumer:
Loans	324,815		291,820
Agricultural Loans [Member]
Consumer:
Loans	105,228		115,658
Commercial Loans [Member]
Consumer:
Loans	430,043		407,478
Other Loans [Member]
Consumer:
Loans	4,137		5,133
Loans, excluding acquired loans [Member]
Consumer:
Loans	2,115,380		2,053,721
Loans, Including Acquired Loans [Member]
Consumer:
Total loans	$4,638,288		$2,736,634
[1]	See Note 5, Loans Acquired, for segregation of loans acquired by loan class.

Note_4_Loans_and_Allowance_for4

Note 4 - Loans and Allowance for Loan Losses (Details) - Nonaccrual Loans, Excluding Loans Acquired, Segregated by Class of Loans (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Consumer:
Loans in nonaccrual status		$2,717
Credit Cards [Member] | Loans, excluding acquired loans [Member]
Consumer:
Loans in nonaccrual status	290	197
Other Consumer [Member] | Loans, excluding acquired loans [Member]
Consumer:
Loans in nonaccrual status	401	405
Other Consumer [Member]
Consumer:
Loans in nonaccrual status		29
Total Consumer Loans [Member] | Loans, excluding acquired loans [Member]
Consumer:
Loans in nonaccrual status	691	602
Construction Loans [Member] | Loans, excluding acquired loans [Member]
Consumer:
Loans in nonaccrual status	5,341	4,863
Construction Loans [Member]
Consumer:
Loans in nonaccrual status		105
Single Family Residential Loans [Member] | Loans, excluding acquired loans [Member]
Consumer:
Loans in nonaccrual status	4,600	4,010
Single Family Residential Loans [Member]
Consumer:
Loans in nonaccrual status		2,018
Other Commercial Real Estate Loans [Member] | Loans, excluding acquired loans [Member]
Consumer:
Loans in nonaccrual status	2,755	1,522
Total Real Estate Loans [Member] | Loans, excluding acquired loans [Member]
Consumer:
Loans in nonaccrual status	12,696	10,395
Commercial [Member] | Loans, excluding acquired loans [Member]
Consumer:
Loans in nonaccrual status	950	585
Commercial [Member]
Consumer:
Loans in nonaccrual status		291
Agricultural Loans [Member] | Loans, excluding acquired loans [Member]
Consumer:
Loans in nonaccrual status	174	456
Agricultural Loans [Member]
Consumer:
Loans in nonaccrual status		3
Total Commercial Loans [Member] | Loans, excluding acquired loans [Member]
Consumer:
Loans in nonaccrual status	1,124	1,041
Loans, excluding acquired loans [Member]
Consumer:
Loans in nonaccrual status	$14,511	$12,038

Note_4_Loans_and_Allowance_for5

Note 4 - Loans and Allowance for Loan Losses (Details) - Age Analysis of Past Due Loans, Excluding Loans Acquired, Segregated by Class of Loans (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Consumer:
Total Loans	$4,640,000	$2,740,000
Credit Cards [Member] | Loans, excluding acquired loans [Member]
Consumer:
Gross 30-89 Days Past Due	538	687
90 Days or More Past Due	439	457
Total Past Due	977	1,144
Current	170,436	184,236
Total Loans	171,413	185,380
Credit Cards [Member]
Consumer:
Total Loans	171,413	185,380
Other Consumer [Member] | Loans, excluding acquired loans [Member]
Consumer:
Gross 30-89 Days Past Due	1,205	1,349
90 Days or More Past Due	388	447
Total Past Due	1,593	1,796
Current	105,893	101,606
Total Loans	107,486	103,402
90 Days Past Due & Accruing	116	223
Other Consumer [Member]
Consumer:
Total Loans	107,486	103,402
Consumer Loans [Member] | Loans, excluding acquired loans [Member]
Consumer:
Gross 30-89 Days Past Due	1,743	2,036
90 Days or More Past Due	827	904
Total Past Due	2,570	2,940
Current	276,329	285,842
Total Loans	278,899	288,782
90 Days Past Due & Accruing	116	223
Consumer Loans [Member]
Consumer:
Total Loans	278,899	288,782
Construction Loans [Member] | Loans, excluding acquired loans [Member]
Consumer:
Gross 30-89 Days Past Due	1,798	760
90 Days or More Past Due	828	570
Total Past Due	2,626	1,330
Current	176,303	180,638
Total Loans	178,929	181,968
90 Days Past Due & Accruing		177
Construction Loans [Member]
Consumer:
Total Loans	178,929	181,968
Single Family Residential Loans [Member] | Loans, excluding acquired loans [Member]
Consumer:
Gross 30-89 Days Past Due	3,023	4,913
90 Days or More Past Due	2,568	2,213
Total Past Due	5,591	7,126
Current	462,080	448,437
Total Loans	467,671	455,563
90 Days Past Due & Accruing	3	248
Single Family Residential Loans [Member]
Consumer:
Total Loans	467,671	455,563
Other Commercial Real Estate Loans [Member] | Loans, excluding acquired loans [Member]
Consumer:
Gross 30-89 Days Past Due	3,453	1,987
90 Days or More Past Due	1,406	847
Total Past Due	4,859	2,834
Current	750,842	711,963
Total Loans	755,701	714,797
Other Commercial Real Estate Loans [Member]
Consumer:
Total Loans	755,701	714,797
Real Estate Loans [Member] | Loans, excluding acquired loans [Member]
Consumer:
Gross 30-89 Days Past Due	8,274	7,660
90 Days or More Past Due	4,802	3,630
Total Past Due	13,076	11,290
Current	1,389,225	1,341,038
Total Loans	1,402,301	1,352,328
90 Days Past Due & Accruing	3	425
Real Estate Loans [Member]
Consumer:
Total Loans	1,402,301	1,352,328
Commercial Loans [Member] | Loans, excluding acquired loans [Member]
Consumer:
Gross 30-89 Days Past Due	645	381
90 Days or More Past Due	128	354
Total Past Due	773	735
Current	324,042	291,085
Total Loans	324,815	291,820
90 Days Past Due & Accruing	13
Commercial Loans [Member]
Consumer:
Total Loans	430,043	407,478
Agricultural Loans [Member] | Loans, excluding acquired loans [Member]
Consumer:
Gross 30-89 Days Past Due	435	119
90 Days or More Past Due	72	109
Total Past Due	507	228
Current	104,721	115,430
Total Loans	105,228	115,658
90 Days Past Due & Accruing	3	40
Agricultural Loans [Member]
Consumer:
Total Loans	105,228	115,658
Total Commercial Loans [Member] | Loans, excluding acquired loans [Member]
Consumer:
Gross 30-89 Days Past Due	1,080	500
90 Days or More Past Due	200	463
Total Past Due	1,280	963
Current	428,763	406,515
Total Loans	430,043	407,478
90 Days Past Due & Accruing	16	40
Other Loans [Member] | Loans, excluding acquired loans [Member]
Consumer:
Current	4,137	5,133
Total Loans	4,137	5,133
Other Loans [Member]
Consumer:
Total Loans	4,137	5,133
Total Loans [Member] | Loans, excluding acquired loans [Member]
Consumer:
Gross 30-89 Days Past Due	11,097	10,196
90 Days or More Past Due	5,829	4,997
Total Past Due	16,926	15,193
Current	2,098,454	2,038,528
Total Loans	2,115,380	2,053,721
90 Days Past Due & Accruing	$135	$688

Note_4_Loans_and_Allowance_for6

Note 4 - Loans and Allowance for Loan Losses (Details) - Impaired Loans, Net of Government Guarantees and Excluding Loans Acquired, Segregated by Class of Loans (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Consumer:
Unpaid Contractual Principal Balance	$18,412,000		$16,236,000
Recorded Investment With No Allowance	16,539,000		14,247,000
Recorded Investment With Allowance	376,000		422,000
Total Recorded Investment	16,915,000		14,669,000
Related Allowance	2,110,000		2,065,000
Average Investment in Impaired Loans	15,793,000	18,624,000
Interest Income Recognized	250,000	206,000
Credit Cards [Member]
Consumer:
Unpaid Contractual Principal Balance	439,000		197,000
Recorded Investment With No Allowance	439,000		197,000
Total Recorded Investment	439,000		197,000
Related Allowance	13,000		6,000
Average Investment in Impaired Loans	318,000	494,000
Interest Income Recognized	5,000	5,000
Other Consumer [Member]
Consumer:
Unpaid Contractual Principal Balance	572,000		604,000
Recorded Investment With No Allowance	544,000		610,000
Recorded Investment With Allowance	8,000		9,000
Total Recorded Investment	552,000		619,000
Related Allowance	91,000		118,000
Average Investment in Impaired Loans	586,000	860,000
Interest Income Recognized	9,000	10,000
Total Consumer Loans [Member]
Consumer:
Unpaid Contractual Principal Balance	1,011,000		801,000
Recorded Investment With No Allowance	983,000		807,000
Recorded Investment With Allowance	8,000		9,000
Total Recorded Investment	991,000		816,000
Related Allowance	104,000		124,000
Average Investment in Impaired Loans	904,000	1,354,000
Interest Income Recognized	14,000	15,000
Construction Loans [Member]
Consumer:
Unpaid Contractual Principal Balance	8,098,000		7,400,000
Recorded Investment With No Allowance	7,482,000		7,020,000
Total Recorded Investment	7,482,000		7,020,000
Related Allowance	464,000		599,000
Average Investment in Impaired Loans	7,251,000	3,001,000
Interest Income Recognized	115,000	33,000
Single Family Residential Loans [Member]
Consumer:
Unpaid Contractual Principal Balance	4,789,000		4,442,000
Recorded Investment With No Allowance	4,385,000		3,948,000
Recorded Investment With Allowance	240,000		377,000
Total Recorded Investment	4,625,000		4,325,000
Related Allowance	781,000		899,000
Average Investment in Impaired Loans	4,475,000	3,982,000
Interest Income Recognized	71,000	44,000
Other Commercial Real Estate Loans [Member]
Consumer:
Unpaid Contractual Principal Balance	3,310,000		1,955,000
Recorded Investment With No Allowance	2,590,000		1,446,000
Recorded Investment With Allowance	128,000		36,000
Total Recorded Investment	2,718,000		1,482,000
Related Allowance	564,000		268,000
Average Investment in Impaired Loans	2,100,000	9,567,000
Interest Income Recognized	33,000	106,000
Total Real Estate Loans [Member]
Consumer:
Unpaid Contractual Principal Balance	16,197,000		13,797,000
Recorded Investment With No Allowance	14,457,000		12,414,000
Recorded Investment With Allowance	368,000		413,000
Total Recorded Investment	14,825,000		12,827,000
Related Allowance	1,809,000		1,756,000
Average Investment in Impaired Loans	13,826,000	16,550,000
Interest Income Recognized	219,000	183,000
Commercial [Member]
Consumer:
Unpaid Contractual Principal Balance	1,022,000		1,227,000
Recorded Investment With No Allowance	958,000		566,000
Total Recorded Investment	958,000		566,000
Related Allowance	172,000		102,000
Average Investment in Impaired Loans	762,000	638,000
Interest Income Recognized	12,000	7,000
Agricultural Loans [Member]
Consumer:
Unpaid Contractual Principal Balance	182,000		501,000
Recorded Investment With No Allowance	141,000		460,000
Total Recorded Investment	141,000		460,000
Related Allowance	25,000		83,000
Average Investment in Impaired Loans	301,000	82,000
Interest Income Recognized	5,000	1,000
Total Commercial Loans [Member]
Consumer:
Unpaid Contractual Principal Balance	1,204,000		1,728,000
Recorded Investment With No Allowance	1,099,000		1,026,000
Total Recorded Investment	1,099,000		1,026,000
Related Allowance	197,000		185,000
Average Investment in Impaired Loans	1,063,000	720,000
Interest Income Recognized	$17,000	$8,000

Note_4_Loans_and_Allowance_for7

Note 4 - Loans and Allowance for Loan Losses (Details) - Troubled Debt Restructurings, Excluding Loans Acquired, Segregated by Class of Loans (USD $)	3 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Real estate:
Number	2	1
Accruing TDR Loans [Member] | Single Family Residential Loans [Member] | Loans, excluding acquired loans [Member]
Real estate:
Number	2		2
Balance	392		$393
Accruing TDR Loans [Member] | Other Commercial Real Estate Loans [Member] | Loans, excluding acquired loans [Member]
Real estate:
Number	3		3
Balance	1,835		1,840
Accruing TDR Loans [Member] | Real Estate Loans [Member] | Loans, excluding acquired loans [Member]
Real estate:
Number	5		5
Balance	2,227		2,233
Accruing TDR Loans [Member] | Loans, excluding acquired loans [Member]
Real estate:
Number	5		5
Balance	2,227		2,233
Nonaccrual TDR Loans [Member] | Construction Loans [Member] | Loans, excluding acquired loans [Member]
Real estate:
Number	1		1
Balance	383		391
Nonaccrual TDR Loans [Member] | Single Family Residential Loans [Member] | Loans, excluding acquired loans [Member]
Real estate:
Number	3		1
Balance	351		3
Nonaccrual TDR Loans [Member] | Other Commercial Real Estate Loans [Member] | Loans, excluding acquired loans [Member]
Real estate:
Number	1		1
Balance	608		614
Nonaccrual TDR Loans [Member] | Real Estate Loans [Member] | Loans, excluding acquired loans [Member]
Real estate:
Number	5		3
Balance	1,342		1,008
Nonaccrual TDR Loans [Member] | Loans, excluding acquired loans [Member]
Real estate:
Number	5		3
Balance	1,342		1,008
Construction Loans [Member] | Loans, excluding acquired loans [Member]
Real estate:
Number	1		1
Balance	383		391
Single Family Residential Loans [Member] | Loans, excluding acquired loans [Member]
Real estate:
Number	5		3
Balance	743		396
Other Commercial Real Estate Loans [Member] | Loans, excluding acquired loans [Member]
Real estate:
Number	4		4
Balance	2,443		2,454
Real Estate Loans [Member] | Loans, excluding acquired loans [Member]
Real estate:
Number	10		8
Balance	3,569		3,241
Loans, excluding acquired loans [Member]
Real estate:
Number	10		8
Balance	3,569		$3,241

Note_4_Loans_and_Allowance_for8

Note 4 - Loans and Allowance for Loan Losses (Details) - Loans Restructured as TDRs, Excluding Loans Acquired, Segregated by Class of Loans (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Real estate:
Number of Loans	2	1
Balance Prior to TDR	$348,000	$1,031,000
Balance	348,000	1,031,000
Change in Maturity Date [Member] | Single Family Residential Loans [Member] | Real Estate Loans [Member]
Real estate:
Financial Impact	348,000	1,031,000
Change in Maturity Date [Member] | Real Estate Loans [Member]
Real estate:
Financial Impact	348,000	1,031,000
Change in Maturity Date [Member]
Real estate:
Financial Impact	348,000	1,031,000
Single Family Residential Loans [Member] | Real Estate Loans [Member]
Real estate:
Number of Loans	2	1
Balance Prior to TDR	348,000	1,031,000
Balance	348,000	1,031,000
Real Estate Loans [Member]
Real estate:
Number of Loans	2	1
Balance Prior to TDR	348,000	1,031,000
Balance	$348,000	$1,031,000

Note_4_Loans_and_Allowance_for9

Note 4 - Loans and Allowance for Loan Losses (Details) - Loans by Credit Risk Rating, Segregated by Class of Loans (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Consumer:
Loans	$4,636,288	$2,736,634
Loans acquired, not covered by FDIC loss share	2,418,440	575,980
Loans acquired, covered by FDIC loss share	102,468	106,933
Credit Cards [Member] | Consumer Loans [Member] | Risk Rate 1-4 [Member]
Consumer:
Loans	170,974	184,923
Credit Cards [Member] | Consumer Loans [Member] | Risk Rate 6 [Member]
Consumer:
Loans	439	457
Credit Cards [Member] | Consumer Loans [Member]
Consumer:
Loans	171,413	185,380
Other Consumer [Member] | Consumer Loans [Member] | Risk Rate 1-4 [Member]
Consumer:
Loans	106,683	102,515
Other Consumer [Member] | Consumer Loans [Member] | Risk Rate 5 [Member]
Consumer:
Loans	5	5
Other Consumer [Member] | Consumer Loans [Member] | Risk Rate 6 [Member]
Consumer:
Loans	758	839
Other Consumer [Member] | Consumer Loans [Member] | Risk Rate 7 [Member]
Consumer:
Loans	40	43
Other Consumer [Member] | Consumer Loans [Member]
Consumer:
Loans	107,486	103,402
Consumer Loans [Member] | Risk Rate 1-4 [Member]
Consumer:
Loans	277,657	287,438
Consumer Loans [Member] | Risk Rate 5 [Member]
Consumer:
Loans	5	5
Consumer Loans [Member] | Risk Rate 6 [Member]
Consumer:
Loans	1,197	1,296
Consumer Loans [Member] | Risk Rate 7 [Member]
Consumer:
Loans	40	43
Consumer Loans [Member]
Consumer:
Loans	278,899	288,782
Construction Loans [Member] | Real Estate Loans [Member] | Risk Rate 1-4 [Member]
Consumer:
Loans	174,956	176,825
Construction Loans [Member] | Real Estate Loans [Member] | Risk Rate 5 [Member]
Consumer:
Loans	38	84
Construction Loans [Member] | Real Estate Loans [Member] | Risk Rate 6 [Member]
Consumer:
Loans	3,935	5,059
Construction Loans [Member] | Real Estate Loans [Member]
Consumer:
Loans	178,929	181,968
Single Family Residential Loans [Member] | Real Estate Loans [Member] | Risk Rate 1-4 [Member]
Consumer:
Loans	457,275	446,040
Single Family Residential Loans [Member] | Real Estate Loans [Member] | Risk Rate 5 [Member]
Consumer:
Loans	1,941	1,776
Single Family Residential Loans [Member] | Real Estate Loans [Member] | Risk Rate 6 [Member]
Consumer:
Loans	8,377	7,665
Single Family Residential Loans [Member] | Real Estate Loans [Member] | Risk Rate 7 [Member]
Consumer:
Loans	78	82
Single Family Residential Loans [Member] | Real Estate Loans [Member]
Consumer:
Loans	467,671	455,563
Other Commercial Loans [Member] | Real Estate Loans [Member] | Risk Rate 1-4 [Member]
Consumer:
Loans	736,764	698,329
Other Commercial Loans [Member] | Real Estate Loans [Member] | Risk Rate 5 [Member]
Consumer:
Loans	7,714	7,074
Other Commercial Loans [Member] | Real Estate Loans [Member] | Risk Rate 6 [Member]
Consumer:
Loans	11,223	9,394
Other Commercial Loans [Member] | Real Estate Loans [Member]
Consumer:
Loans	755,701	714,797
Real Estate Loans [Member] | Risk Rate 1-4 [Member]
Consumer:
Loans	1,368,995	1,321,194
Real Estate Loans [Member] | Risk Rate 5 [Member]
Consumer:
Loans	9,693	8,934
Real Estate Loans [Member] | Risk Rate 6 [Member]
Consumer:
Loans	23,535	22,118
Real Estate Loans [Member] | Risk Rate 7 [Member]
Consumer:
Loans	78	82
Real Estate Loans [Member]
Consumer:
Loans	1,402,301	1,352,328
Commercial [Member] | Commercial Loans [Member] | Risk Rate 1-4 [Member]
Consumer:
Loans	301,561	271,017
Commercial [Member] | Commercial Loans [Member] | Risk Rate 5 [Member]
Consumer:
Loans	1,667	1,544
Commercial [Member] | Commercial Loans [Member] | Risk Rate 6 [Member]
Consumer:
Loans	21,579	19,248
Commercial [Member] | Commercial Loans [Member] | Risk Rate 7 [Member]
Consumer:
Loans	8	11
Commercial [Member] | Commercial Loans [Member]
Consumer:
Loans	324,815	291,820
Agricultural Loans [Member] | Commercial Loans [Member] | Risk Rate 1-4 [Member]
Consumer:
Loans	105,034	115,106
Agricultural Loans [Member] | Commercial Loans [Member] | Risk Rate 5 [Member]
Consumer:
Loans	20	20
Agricultural Loans [Member] | Commercial Loans [Member] | Risk Rate 6 [Member]
Consumer:
Loans	174	532
Agricultural Loans [Member] | Commercial Loans [Member]
Consumer:
Loans	105,228	115,658
Commercial Loans [Member] | Risk Rate 1-4 [Member]
Consumer:
Loans	406,595	386,123
Commercial Loans [Member] | Risk Rate 5 [Member]
Consumer:
Loans	1,687	1,564
Commercial Loans [Member] | Risk Rate 6 [Member]
Consumer:
Loans	21,753	19,780
Commercial Loans [Member] | Risk Rate 7 [Member]
Consumer:
Loans	8	11
Commercial Loans [Member]
Consumer:
Loans	430,043	407,478
Other Loans [Member] | Risk Rate 1-4 [Member]
Consumer:
Loans	4,137	5,133
Other Loans [Member]
Consumer:
Loans	4,137	5,133
Risk Rate 1-4 [Member]
Consumer:
Loans	4,492,831	2,642,549
Loans acquired, not covered by FDIC loss share	2,332,979	535,728
Loans acquired, covered by FDIC loss share	102,468	106,933
Risk Rate 5 [Member]
Consumer:
Loans	38,428	11,938
Loans acquired, not covered by FDIC loss share	27,043	1,435
Risk Rate 6 [Member]
Consumer:
Loans	102,716	80,152
Loans acquired, not covered by FDIC loss share	56,231	36,958
Risk Rate 7 [Member]
Consumer:
Loans	2,285	1,990
Loans acquired, not covered by FDIC loss share	2,159	1,854
Risk Rate 8 [Member]
Consumer:
Loans	28	5
Loans acquired, not covered by FDIC loss share	$28	$5

Recovered_Sheet1

Note 4 - Loans and Allowance for Loan Losses (Details) - Net (Charge-Offs)/Recoveries, Excluding Loans Acquired, Segregated by Class of Loans (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Credit Cards [Member] | Consumer Loans [Member]
Consumer:
Finance Receivables, Net (charge offs)/recoveries	($572)	($545)
Student Loans [Member] | Consumer Loans [Member]
Consumer:
Finance Receivables, Net (charge offs)/recoveries		-9
Other Consumer [Member] | Consumer Loans [Member]
Consumer:
Finance Receivables, Net (charge offs)/recoveries	-87	-16
Construction Loans [Member] | Real Estate Loans [Member]
Consumer:
Finance Receivables, Net (charge offs)/recoveries		-430
Single Family Residential Loans [Member] | Real Estate Loans [Member]
Consumer:
Finance Receivables, Net (charge offs)/recoveries	-251	-311
Other Consumer and Other Loans [Member] | Real Estate Loans [Member]
Consumer:
Finance Receivables, Net (charge offs)/recoveries	-30	4
Commercial [Member] | Commercial Loans [Member]
Consumer:
Finance Receivables, Net (charge offs)/recoveries	-76	-42
Agricultural Loans [Member] | Commercial Loans [Member]
Consumer:
Finance Receivables, Net (charge offs)/recoveries		-18
Total Commercial Loans [Member] | Commercial Loans [Member]
Consumer:
Finance Receivables, Net (charge offs)/recoveries	-76	-60
Consumer Loans [Member]
Consumer:
Finance Receivables, Net (charge offs)/recoveries	-659	-570
Real Estate Loans [Member]
Consumer:
Finance Receivables, Net (charge offs)/recoveries	-281	-737
Commercial Loans [Member]
Consumer:
Finance Receivables, Net (charge offs)/recoveries	($1,016)	($1,367)

Recovered_Sheet2

Note 4 - Loans and Allowance for Loan Losses (Details) - Activity in the Allowance for Loan Losses, by Portfolio Segment, for the Current Year: (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of period	$29,028
Provision for loan losses	1,171	908
Balance	29,183
Period-end amount allocated to:
Balance	29,183
Commercial Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of period	6,962	3,205
Provision for loan losses	-16	363
Charge-offs	-245	-74
Recoveries	169	14
Net charge-offs	-76	-60
Balance	6,870	3,508
Period-end amount allocated to:
Loans individually evaluated for impairment	197	173	185
Loans collectively evaluated for impairment	6,673	3,335	6,777
Balance	6,870	3,508
Real Estate Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of period	15,161	16,885
Provision for loan losses	673	245
Charge-offs	-293	-806
Recoveries	12	69
Net charge-offs	-281	-737
Balance	15,553	16,393
Period-end amount allocated to:
Loans individually evaluated for impairment	1,809	1,540	1,756
Loans collectively evaluated for impairment	13,744	14,853	13,405
Balance	15,553	16,393
Credit Cards [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of period	5,445	5,430
Provision for loan losses	654	559
Charge-offs	-785	-816
Recoveries	213	271
Net charge-offs	-572	-545
Balance	5,527	5,444
Period-end amount allocated to:
Loans individually evaluated for impairment	13	14	6
Loans collectively evaluated for impairment	5,514	5,430	5,439
Balance	5,527	5,444
Other Consumer and Other Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of period	1,460	1,922
Provision for loan losses	-140	-259
Charge-offs	-220	-146
Recoveries	133	121
Net charge-offs	-87	-25
Balance	1,233	1,638
Period-end amount allocated to:
Loans individually evaluated for impairment	91	163	118
Loans collectively evaluated for impairment	1,142	1,475	1,342
Balance	1,233	1,638
Unallocated Financing Receivables [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of period	29,028	27,442
Provision for loan losses	1,171	908
Charge-offs	-1,543	-1,842
Recoveries	527	475
Net charge-offs	-1,016	-1,367
Balance	29,183	26,983
Period-end amount allocated to:
Loans individually evaluated for impairment	2,110	1,890	2,065
Loans collectively evaluated for impairment	27,073	25,093	26,963
Balance	$29,183	$26,983

Recovered_Sheet3

Note 4 - Loans and Allowance for Loan Losses (Details) - Recorded Investment in Loans, Excluding Loans Acquired (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Note 4 - Loans and Allowance for Loan Losses (Details) - Recorded Investment in Loans, Excluding Loans Acquired [Line Items]
Balance, end of period	$4,636,288	$2,736,634
Commercial Loans [Member] | Loans, excluding acquired loans [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) - Recorded Investment in Loans, Excluding Loans Acquired [Line Items]
Loans individually evaluated for impairment	1,099	1,026
Loans collectively evaluated for impairment	428,944	406,452
Balance, end of period	430,043	407,478
Commercial Loans [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) - Recorded Investment in Loans, Excluding Loans Acquired [Line Items]
Balance, end of period	430,043	407,478
Real Estate Loans [Member] | Loans, excluding acquired loans [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) - Recorded Investment in Loans, Excluding Loans Acquired [Line Items]
Loans individually evaluated for impairment	14,825	12,827
Loans collectively evaluated for impairment	1,387,476	1,339,501
Balance, end of period	1,402,301	1,352,328
Real Estate Loans [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) - Recorded Investment in Loans, Excluding Loans Acquired [Line Items]
Balance, end of period	1,402,301	1,352,328
Credit Cards [Member] | Loans, excluding acquired loans [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) - Recorded Investment in Loans, Excluding Loans Acquired [Line Items]
Loans individually evaluated for impairment	439	197
Loans collectively evaluated for impairment	170,974	185,183
Balance, end of period	171,413	185,380
Other Consumer and Other Loans [Member] | Loans, excluding acquired loans [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) - Recorded Investment in Loans, Excluding Loans Acquired [Line Items]
Loans individually evaluated for impairment	552	619
Loans collectively evaluated for impairment	111,071	107,916
Balance, end of period	111,623	108,535
Loans, excluding acquired loans [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) - Recorded Investment in Loans, Excluding Loans Acquired [Line Items]
Loans individually evaluated for impairment	16,915	14,669
Loans collectively evaluated for impairment	2,098,465	2,039,052
Balance, end of period	$2,115,380	$2,053,721

Note_5_Loans_Acquired_Details

Note 5 - Loans Acquired (Details) (USD $)	3 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014	Dec. 31, 2015
Note 5 - Loans Acquired (Details) [Line Items]
Acquired Loans, Covered By FDIC Loss Share Agreements	$102.50	$106.90
Allowance for Loan and Lease Losses, Loans Acquired	1	1
Certain Loans Acquired In Transfer Accretable Yield Adjustment	14.3
FDIC Indemnification Asset Accretable Yield Adjustment	6.6
Covered Purchased Impaired Loans, Allowance	1	1
Loans Acquired, Not Covered By FDIC Loss Share [Member]
Note 5 - Loans Acquired (Details) [Line Items]
Allowance for Loan and Lease Losses, Loans Acquired	0	0
Purchased Credit Impaired Loans [Member] | Liberty Bancshares, Inc. [Member]
Note 5 - Loans Acquired (Details) [Line Items]
Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed Other Noncurrent Assets Loans Acquired Not Covered by FDIC Loss Share	10.7
Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed Other Noncurrent Assets Loans Acquired Gross	15.7
Loans Acquired Discount	5
Purchased Credit Impaired Loans [Member] | Community First Bancshares, Inc. [Member]
Note 5 - Loans Acquired (Details) [Line Items]
Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed Other Noncurrent Assets Loans Acquired Not Covered by FDIC Loss Share	7
Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed Other Noncurrent Assets Loans Acquired Gross	10.1
Loans Acquired Discount	3.1
Scenario, Forecast [Member]
Note 5 - Loans Acquired (Details) [Line Items]
Certain Loans Acquired In Transfer Accretable Yield Adjustment Current Year Increase Decrease			6.2
FDIC Indemnification Asset Accretable Yield Adjustment Current Year Increase Decrease			-5.6
Net Addition to Pre-tax Income Due to Remaining Accretable Yield Adjustments			0.6
Liberty Bancshares, Inc. [Member]
Note 5 - Loans Acquired (Details) [Line Items]
Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed Other Noncurrent Assets Loans Acquired Not Covered by FDIC Loss Share	769.9
Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed Other Noncurrent Assets Loans Acquired Gross	774.8
Loans Acquired Discount	4.9
Community First Bancshares, Inc. [Member]
Note 5 - Loans Acquired (Details) [Line Items]
Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed Other Noncurrent Assets Loans Acquired Not Covered by FDIC Loss Share	1,130
Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed Other Noncurrent Assets Loans Acquired Gross	1,150
Loans Acquired Discount	$23.70

Note_5_Loans_Acquired_Details_

Note 5 - Loans Acquired (Details) - Carrying Value of all Acquired Impaired Loans (USD $)	Mar. 31, 2015		Dec. 31, 2014
Note 5 - Loans Acquired (Details) - Carrying Value of all Acquired Impaired Loans [Line Items]
Acquired loans		[1]	$682,913,000	[1]
Other Consumer [Member] | Consumer Loans [Member]
Note 5 - Loans Acquired (Details) - Carrying Value of all Acquired Impaired Loans [Line Items]
Acquired loans	131,168,000		8,514,000
Construction Loans [Member] | Real Estate Loans [Member]
Note 5 - Loans Acquired (Details) - Carrying Value of all Acquired Impaired Loans [Line Items]
Acquired loans	158,101,000		46,911,000
Single Family Residential Loans [Member] | Real Estate Loans [Member]
Note 5 - Loans Acquired (Details) - Carrying Value of all Acquired Impaired Loans [Line Items]
Acquired loans	723,658,000		175,970,000
Other Commercial Real Estate Loans [Member] | Real Estate Loans [Member]
Note 5 - Loans Acquired (Details) - Carrying Value of all Acquired Impaired Loans [Line Items]
Acquired loans	1,162,870,000		390,877,000
Commercial [Member] | Commercial Loans [Member]
Note 5 - Loans Acquired (Details) - Carrying Value of all Acquired Impaired Loans [Line Items]
Acquired loans	314,723,000		56,134,000
Agricultural Loans [Member] | Commercial Loans [Member]
Note 5 - Loans Acquired (Details) - Carrying Value of all Acquired Impaired Loans [Line Items]
Acquired loans	23,400,000		4,507,000
Other Loans [Member]
Note 5 - Loans Acquired (Details) - Carrying Value of all Acquired Impaired Loans [Line Items]
Acquired loans	6,988		60,641,000
Consumer Loans [Member]
Note 5 - Loans Acquired (Details) - Carrying Value of all Acquired Impaired Loans [Line Items]
Acquired loans	131,168,000		8,514,000
Real Estate Loans [Member]
Note 5 - Loans Acquired (Details) - Carrying Value of all Acquired Impaired Loans [Line Items]
Acquired loans	2,044,629,000		613,758,000
Commercial Loans [Member]
Note 5 - Loans Acquired (Details) - Carrying Value of all Acquired Impaired Loans [Line Items]
Acquired loans	$338,123,000		$60,641,000
[1]	Loans acquired include $102.5 million and $106.9 million (each net of $1.0 million allowance) of loans covered by FDIC loss share agreements at March 31, 2015 and December 31, 2014, respectively.

Note_5_Loans_Acquired_Details_1

Note 5 - Loans Acquired (Details) - Nonaccrual Acquired Loans (USD $)	Dec. 31, 2014	Mar. 31, 2015
In Thousands, unless otherwise specified
Consumer:
Nonaccrual acquired loans	$2,717
Other Consumer [Member] | Acquired Loans [Member]
Consumer:
Nonaccrual acquired loans		22
Other Consumer [Member]
Consumer:
Nonaccrual acquired loans	29
Consumer Loans [Member] | Acquired Loans [Member]
Consumer:
Nonaccrual acquired loans		22
Consumer Loans [Member]
Consumer:
Nonaccrual acquired loans	29
Construction Loans [Member] | Acquired Loans [Member]
Consumer:
Nonaccrual acquired loans		336
Construction Loans [Member]
Consumer:
Nonaccrual acquired loans	105
Single Family Residential Loans [Member] | Acquired Loans [Member]
Consumer:
Nonaccrual acquired loans		1,452
Single Family Residential Loans [Member]
Consumer:
Nonaccrual acquired loans	2,018
Other Commercial Loans [Member] | Acquired Loans [Member]
Consumer:
Nonaccrual acquired loans		2,046
Other Commercial Loans [Member]
Consumer:
Nonaccrual acquired loans	271
Real Estate Loans [Member] | Acquired Loans [Member]
Consumer:
Nonaccrual acquired loans		3,834
Real Estate Loans [Member]
Consumer:
Nonaccrual acquired loans	2,394
Commercial [Member] | Acquired Loans [Member]
Consumer:
Nonaccrual acquired loans		591
Commercial [Member]
Consumer:
Nonaccrual acquired loans	291
Agricultural Loans [Member] | Acquired Loans [Member]
Consumer:
Nonaccrual acquired loans		126
Agricultural Loans [Member]
Consumer:
Nonaccrual acquired loans	3
Commercial Loans [Member] | Acquired Loans [Member]
Consumer:
Nonaccrual acquired loans		717
Commercial Loans [Member]
Consumer:
Nonaccrual acquired loans	294
Acquired Loans [Member]
Consumer:
Nonaccrual acquired loans		$4,573

Note_5_Loans_Acquired_Details_2

Note 5 - Loans Acquired (Details) - Age Analysis of Past Due Acquired Loans, Excluding Loans Covered by Loss Share (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Consumer:
Past due acquired loans, total loans	$4,640,000	$2,740,000
Other Consumer [Member] | Acquired Loans [Member]
Consumer:
Past due acquired loans, gross 30-89 days past due	296	70
Past due acquired loans, 90 days or more past due	91	34
Past due acquired loans, total past due	387	104
Past due acquired loans, current	130,779	8,407
Past due acquired loans, total loans	131,166	8,511
Past due acquired loans, 90 days past due and accruing	11	5
Other Consumer [Member]
Consumer:
Past due acquired loans, total loans	107,486	103,402
Consumer Loans [Member] | Acquired Loans [Member]
Consumer:
Past due acquired loans, gross 30-89 days past due	296	70
Past due acquired loans, 90 days or more past due	91	34
Past due acquired loans, total past due	387	104
Past due acquired loans, current	130,779	8,407
Past due acquired loans, total loans	131,166	8,511
Past due acquired loans, 90 days past due and accruing	11	5
Consumer Loans [Member]
Consumer:
Past due acquired loans, total loans	278,899	288,782
Construction Loans [Member] | Acquired Loans [Member]
Consumer:
Past due acquired loans, gross 30-89 days past due	604	292
Past due acquired loans, 90 days or more past due	111	105
Past due acquired loans, total past due	715	397
Past due acquired loans, current	149,015	36,450
Past due acquired loans, total loans	149,730	36,847
Construction Loans [Member]
Consumer:
Past due acquired loans, total loans	178,929	181,968
Single Family Residential Loans [Member] | Acquired Loans [Member]
Consumer:
Past due acquired loans, gross 30-89 days past due	5,179	3,804
Past due acquired loans, 90 days or more past due	4,522	2,906
Past due acquired loans, total past due	9,701	6,710
Past due acquired loans, current	679,850	138,383
Past due acquired loans, total loans	689,551	145,093
Past due acquired loans, 90 days past due and accruing	1,552	594
Single Family Residential Loans [Member]
Consumer:
Past due acquired loans, total loans	467,671	455,563
Other Commercial Loans [Member] | Acquired Loans [Member]
Consumer:
Past due acquired loans, gross 30-89 days past due	5,409	1,415
Past due acquired loans, 90 days or more past due	8,469	5,994
Past due acquired loans, total past due	13,878	7,409
Past due acquired loans, current	1,097,724	326,759
Past due acquired loans, total loans	1,111,601	334,168
Other Commercial Loans [Member]
Consumer:
Past due acquired loans, total loans	324,815	291,820
Real Estate Loans [Member] | Acquired Loans [Member]
Consumer:
Past due acquired loans, gross 30-89 days past due	11,192	5,511
Past due acquired loans, 90 days or more past due	13,102	9,005
Past due acquired loans, total past due	24,294	14,516
Past due acquired loans, current	1,926,588	501,592
Past due acquired loans, total loans	1,950,882	516,108
Past due acquired loans, 90 days past due and accruing	1,552	594
Real Estate Loans [Member]
Consumer:
Past due acquired loans, total loans	1,402,301	1,352,328
Commercial [Member] | Acquired Loans [Member]
Consumer:
Past due acquired loans, gross 30-89 days past due	2,509	110
Past due acquired loans, 90 days or more past due	1,221	421
Past due acquired loans, total past due	3,790	531
Past due acquired loans, current	303,172	46,730
Past due acquired loans, total loans	306,902	47,261
Past due acquired loans, 90 days past due and accruing	186
Agricultural Loans [Member] | Acquired Loans [Member]
Consumer:
Past due acquired loans, gross 30-89 days past due	1,089
Past due acquired loans, total past due	1,089
Past due acquired loans, current	21,447	4,100
Past due acquired loans, total loans	22,536	4,100
Agricultural Loans [Member]
Consumer:
Past due acquired loans, total loans	105,228	115,658
Commercial Loans [Member] | Acquired Loans [Member]
Consumer:
Past due acquired loans, gross 30-89 days past due	3,598	110
Past due acquired loans, 90 days or more past due	1,221	421
Past due acquired loans, total past due	4,819	531
Past due acquired loans, current	324,619	51,360
Past due acquired loans, total loans	329,438	51,361
Past due acquired loans, 90 days past due and accruing	186
Commercial Loans [Member]
Consumer:
Past due acquired loans, total loans	430,043	407,478
Other Loans [Member] | Acquired Loans [Member]
Consumer:
Past due acquired loans, current	6,954
Past due acquired loans, total loans	6,954
Other Loans [Member]
Consumer:
Past due acquired loans, total loans	4,137	5,133
Total Loans [Member] | Acquired Loans [Member]
Consumer:
Past due acquired loans, gross 30-89 days past due	15,086	5,691
Past due acquired loans, 90 days or more past due	14,414	9,460
Past due acquired loans, total past due	29,500	15,151
Past due acquired loans, current	2,388,940	560,829
Past due acquired loans, total loans	2,418,440	575,980
Past due acquired loans, 90 days past due and accruing	$1,749	$599

Note_5_Loans_Acquired_Details_3

Note 5 - Loans Acquired (Details) - Summary of Acquired Loans, Excluding Loans Covered by Loss Share (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Consumer:
Acquired loans	$4,636,288	$2,736,634
Other Consumer [Member] | Acquired Loans [Member] | Risk Rate 1-4 [Member]
Consumer:
Acquired loans	130,750	8,479
Other Consumer [Member] | Acquired Loans [Member] | Risk Rate 6 [Member]
Consumer:
Acquired loans	416	32
Other Consumer [Member] | Acquired Loans [Member]
Consumer:
Acquired loans	131,166	8,511
Total Consumer Loans [Member] | Acquired Loans [Member] | Risk Rate 1-4 [Member]
Consumer:
Acquired loans	130,750	8,479
Total Consumer Loans [Member] | Acquired Loans [Member] | Risk Rate 6 [Member]
Consumer:
Acquired loans	416	32
Total Consumer Loans [Member] | Acquired Loans [Member]
Consumer:
Acquired loans	131,166	8,511
Construction Loans [Member] | Acquired Loans [Member] | Risk Rate 1-4 [Member]
Consumer:
Acquired loans	139,843	27,430
Construction Loans [Member] | Acquired Loans [Member] | Risk Rate 5 [Member]
Consumer:
Acquired loans	2,602	78
Construction Loans [Member] | Acquired Loans [Member] | Risk Rate 6 [Member]
Consumer:
Acquired loans	7,285	9,339
Construction Loans [Member] | Acquired Loans [Member]
Consumer:
Acquired loans	149,730	36,847
Single Family Residential Loans [Member] | Acquired Loans [Member] | Risk Rate 1-4 [Member]
Consumer:
Acquired loans	666,400	135,240
Single Family Residential Loans [Member] | Acquired Loans [Member] | Risk Rate 5 [Member]
Consumer:
Acquired loans	10,289	683
Single Family Residential Loans [Member] | Acquired Loans [Member] | Risk Rate 6 [Member]
Consumer:
Acquired loans	10,720	7,311
Single Family Residential Loans [Member] | Acquired Loans [Member] | Risk Rate 7 [Member]
Consumer:
Acquired loans	2,114	1,854
Single Family Residential Loans [Member] | Acquired Loans [Member] | Risk Rate 8 [Member]
Consumer:
Acquired loans	28	5
Single Family Residential Loans [Member] | Acquired Loans [Member]
Consumer:
Acquired loans	689,551	145,093
Other Commercial Loans [Member] | Acquired Loans [Member] | Risk Rate 1-4 [Member]
Consumer:
Acquired loans	1,074,127	317,965
Other Commercial Loans [Member] | Acquired Loans [Member] | Risk Rate 5 [Member]
Consumer:
Acquired loans	10,812	605
Other Commercial Loans [Member] | Acquired Loans [Member] | Risk Rate 6 [Member]
Consumer:
Acquired loans	26,662	15,598
Other Commercial Loans [Member] | Acquired Loans [Member]
Consumer:
Acquired loans	111,160	334,168
Total Real Estate Loans [Member] | Acquired Loans [Member] | Risk Rate 1-4 [Member]
Consumer:
Acquired loans	1,880,370	480,635
Total Real Estate Loans [Member] | Acquired Loans [Member] | Risk Rate 5 [Member]
Consumer:
Acquired loans	23,703	1,366
Total Real Estate Loans [Member] | Acquired Loans [Member] | Risk Rate 6 [Member]
Consumer:
Acquired loans	44,667	32,248
Total Real Estate Loans [Member] | Acquired Loans [Member] | Risk Rate 7 [Member]
Consumer:
Acquired loans	2,114	1,854
Total Real Estate Loans [Member] | Acquired Loans [Member] | Risk Rate 8 [Member]
Consumer:
Acquired loans	28	5
Total Real Estate Loans [Member] | Acquired Loans [Member]
Consumer:
Acquired loans	1,950,882	516,108
Commercial [Member] | Acquired Loans [Member] | Risk Rate 1-4 [Member]
Consumer:
Acquired loans	294,464	43,585
Commercial [Member] | Acquired Loans [Member] | Risk Rate 5 [Member]
Consumer:
Acquired loans	3,135	69
Commercial [Member] | Acquired Loans [Member] | Risk Rate 6 [Member]
Consumer:
Acquired loans	9,258	3,607
Commercial [Member] | Acquired Loans [Member] | Risk Rate 7 [Member]
Consumer:
Acquired loans	45
Commercial [Member] | Acquired Loans [Member]
Consumer:
Acquired loans	306,902	47,261
Agricultural Loans [Member] | Acquired Loans [Member] | Risk Rate 1-4 [Member]
Consumer:
Acquired loans	20,489	3,030
Agricultural Loans [Member] | Acquired Loans [Member] | Risk Rate 5 [Member]
Consumer:
Acquired loans	157
Agricultural Loans [Member] | Acquired Loans [Member] | Risk Rate 6 [Member]
Consumer:
Acquired loans	1,890	1,070
Agricultural Loans [Member] | Acquired Loans [Member]
Consumer:
Acquired loans	22,536	4,100
Total Commercial Loans [Member] | Acquired Loans [Member] | Risk Rate 1-4 [Member]
Consumer:
Acquired loans	314,953	46,615
Total Commercial Loans [Member] | Acquired Loans [Member] | Risk Rate 5 [Member]
Consumer:
Acquired loans	3,292	69
Total Commercial Loans [Member] | Acquired Loans [Member] | Risk Rate 6 [Member]
Consumer:
Acquired loans	11,148	4,677
Total Commercial Loans [Member] | Acquired Loans [Member] | Risk Rate 7 [Member]
Consumer:
Acquired loans	45
Total Commercial Loans [Member] | Acquired Loans [Member]
Consumer:
Acquired loans	329,438	51,361
Other Loans [Member] | Acquired Loans [Member] | Risk Rate 1-4 [Member]
Consumer:
Acquired loans	6,906
Other Loans [Member] | Acquired Loans [Member] | Risk Rate 5 [Member]
Consumer:
Acquired loans	48
Other Loans [Member] | Acquired Loans [Member]
Consumer:
Acquired loans	6,954
Other Loans [Member] | Risk Rate 1-4 [Member]
Consumer:
Acquired loans	4,137	5,133
Other Loans [Member]
Consumer:
Acquired loans	4,137	5,133
Acquired Loans [Member] | Risk Rate 1-4 [Member]
Consumer:
Acquired loans	2,332,979	535,729
Acquired Loans [Member] | Risk Rate 5 [Member]
Consumer:
Acquired loans	27,043	1,435
Acquired Loans [Member] | Risk Rate 6 [Member]
Consumer:
Acquired loans	56,231	36,957
Acquired Loans [Member] | Risk Rate 7 [Member]
Consumer:
Acquired loans	2,159	1,854
Acquired Loans [Member] | Risk Rate 8 [Member]
Consumer:
Acquired loans	28	5
Acquired Loans [Member]
Consumer:
Acquired loans	2,418,440	575,980
Risk Rate 1-4 [Member]
Consumer:
Acquired loans	4,492,831	2,642,549
Risk Rate 5 [Member]
Consumer:
Acquired loans	38,428	11,938
Risk Rate 6 [Member]
Consumer:
Acquired loans	102,716	80,152
Risk Rate 7 [Member]
Consumer:
Acquired loans	2,285	1,990
Risk Rate 8 [Member]
Consumer:
Acquired loans	$28	$5

Note_5_Loans_Acquired_Details_4

Note 5 - Loans Acquired (Details) - Summary of the Non-covered Impaired Loans Acquired in Acquisitions (Loans Acquired, Not Covered By FDIC Loss Share [Member], USD $)	Feb. 27, 2015
In Thousands, unless otherwise specified
Purchased Credit Impaired Loans [Member] | Liberty [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Contractually required principal and interest at acquisition	$15,716
Non-accretable difference (expected losses and foregone interest)	-4,978
Cash flows expected to be collected at acquisition	10,738
Accretable yield	12
Basis in acquired loans at acquisition	10,750
Purchased Credit Impaired Loans [Member] | Community First Bancshares, Inc. [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Contractually required principal and interest at acquisition	10,143
Non-accretable difference (expected losses and foregone interest)	-3,247
Cash flows expected to be collected at acquisition	6,896
Accretable yield	104
Basis in acquired loans at acquisition	7,000
Liberty [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Contractually required principal and interest at acquisition	774,777
Cash flows expected to be collected at acquisition	774,777
Accretable yield	-4,869
Basis in acquired loans at acquisition	769,908
Community First Bancshares, Inc. [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Contractually required principal and interest at acquisition	1,153,255
Cash flows expected to be collected at acquisition	1,153,255
Accretable yield	-23,712
Basis in acquired loans at acquisition	$1,129,543

Note_5_Loans_Acquired_Details_5

Note 5 - Loans Acquired (Details) - Impact of the Adjustments on the Company's Financial Results for the Following Reporting Periods (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Impact of the Adjustments on the Company's Financial Results for the Following Reporting Periods [Abstract]
Impact on net interest income	$6,102	$7,391
Non-interest income	-2,745	-7,441
Net impact to pre-tax income	3,357	-50
Net impact, net of taxes	$2,040	($30)

Note_5_Loans_Acquired_Details_6

Note 5 - Loans Acquired (Details) - Changes in the Carrying Amount of the Accretable Yield for All Purchased Impaired and Non-Impaired Loans (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Changes in the Carrying Amount of the Accretable Yield for All Purchased Impaired and Non-Impaired Loans [Abstract]
Balance	$20,635	$41,385
Balance	169,098	234,785
Additions	-116
Additions	17,750
Accretable yield adjustments	3,074	1,483
Accretion	-6,367	-9,326
Accretion	6,367	9,326
Payments and other reductions, net	-15,524	-25,579
Balance	17,226	33,542
Balance	$177,691	$218,532

Note_5_Loans_Acquired_Details_7

Note 5 - Loans Acquired (Details) - Summary of the Changes in the FDIC True-Up Provision (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Summary of the Changes in the FDIC True-Up Provision [Abstract]
Balance	$8,308	$6,768
Amortization expense	40	43
Adjustments related to changes in expected losses	254	442
Balance	$8,602	$7,253

Note_6_Goodwill_and_Other_Inta2

Note 6 - Goodwill and Other Intangible Assets (Details) (USD $)	3 Months Ended		0 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Sep. 30, 2013	Dec. 31, 2014	Feb. 27, 2015
Note 6 - Goodwill and Other Intangible Assets (Details) [Line Items]
Goodwill	$314,643,000			$108,095,000
Core Deposit Premium [Member] | Community First Bancshares, Inc. [Member]
Note 6 - Goodwill and Other Intangible Assets (Details) [Line Items]
Finite-lived Intangible Assets Acquired	11,300,000
Core Deposit Premium [Member] | Liberty Bancshares, Inc. [Member]
Note 6 - Goodwill and Other Intangible Assets (Details) [Line Items]
Finite-lived Intangible Assets Acquired	14,600,000
Core Deposit Premium [Member]
Note 6 - Goodwill and Other Intangible Assets (Details) [Line Items]
Finite-Lived Intangible Asset, Useful Life	10 years
Amortization of Intangible Assets	350,000,000,000	670,000
Books of Business Intangible [Member] | Community First Bancshares, Inc. [Member]
Note 6 - Goodwill and Other Intangible Assets (Details) [Line Items]
Finite-lived Intangible Assets Acquired	400,000
Books of Business Intangible [Member] | Delta Acquisition [Member]
Note 6 - Goodwill and Other Intangible Assets (Details) [Line Items]
Finite-lived Intangible Assets Acquired	5,100,000
Books of Business Intangible [Member] | Minimum [Member]
Note 6 - Goodwill and Other Intangible Assets (Details) [Line Items]
Finite-Lived Intangible Asset, Useful Life	10 years
Books of Business Intangible [Member] | Maximum [Member]
Note 6 - Goodwill and Other Intangible Assets (Details) [Line Items]
Finite-Lived Intangible Asset, Useful Life	15 years
Books of Business Intangible [Member]
Note 6 - Goodwill and Other Intangible Assets (Details) [Line Items]
Amortization of Intangible Assets	120,000	0
Purchased Credit Card Relationships [Member]
Note 6 - Goodwill and Other Intangible Assets (Details) [Line Items]
Finite-Lived Intangible Asset, Useful Life			5 years
Finite-lived Intangible Assets Acquired			2,100,000
Amortization of Intangible Assets	103,000	103,000
Community First Bancshares, Inc. [Member]
Note 6 - Goodwill and Other Intangible Assets (Details) [Line Items]
Goodwill					111,600,000
Goodwill, Acquired During Period	94,900,000
Liberty Bancshares, Inc. [Member]
Note 6 - Goodwill and Other Intangible Assets (Details) [Line Items]
Goodwill					94,912,000
Goodwill, Acquired During Period	$111,600,000

Note_6_Goodwill_and_Other_Inta3

Note 6 - Goodwill and Other Intangible Assets (Details) - Goodwill and Other Intangibles (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Note 6 - Goodwill and Other Intangible Assets (Details) - Goodwill and Other Intangibles [Line Items]
Goodwill	$314,643	$108,095
Core deposit premiums:
Total goodwill and other intangible assets	362,530	130,621
Core Deposit Premium [Member]
Core deposit premiums:
Gross carrying amount	44,030	18,318
Accumulated amortization	-2,939	-2,386
Net carrying amount	41,091	15,932
Purchased Credit Card Relationships [Member]
Core deposit premiums:
Gross carrying amount	2,068	2,068
Accumulated amortization	-621	-517
Net carrying amount	1,447	1,551
Books of Business Intangible [Member]
Core deposit premiums:
Gross carrying amount	5,560	5,140
Accumulated amortization	-211	-97
Net carrying amount	5,349	5,043
Other Intangible Assets [Member]
Core deposit premiums:
Net carrying amount	$47,887	$22,526

Note_6_Goodwill_and_Other_Inta4

Note 6 - Goodwill and Other Intangible Assets (Details) - Amortization Expense (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Core Deposit Premium [Member]
Note 6 - Goodwill and Other Intangible Assets (Details) - Amortization Expense [Line Items]
Remaining in 2015	$3,302
2016	4,400
2017	4,400
2018	4,400
2019	4,400
Thereafter	20,189
Total	41,091	15,932
Purchased Credit Card Relationships [Member]
Note 6 - Goodwill and Other Intangible Assets (Details) - Amortization Expense [Line Items]
Remaining in 2015	310
2016	414
2017	414
2018	309
Total	1,447	1,551
Books of Business Intangible [Member]
Note 6 - Goodwill and Other Intangible Assets (Details) - Amortization Expense [Line Items]
Remaining in 2015	300
2016	427
2017	427
2018	427
2019	427
Thereafter	3,341
Total	$5,349	$5,043

Note_7_Time_Deposits_Details

Note 7 - Time Deposits (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Disclosure Text Block [Abstract]
Time Deposits, $100,000 or More	$464,270,000	$434,297,000

Note_8_Income_Taxes_Details

Note 8 - Income Taxes (Details) (Earliest Tax Year [Member])	3 Months Ended
	Mar. 31, 2015
Domestic Tax Authority [Member]
Note 8 - Income Taxes (Details) [Line Items]
Open Tax Year	2011
State and Local Jurisdiction [Member]
Note 8 - Income Taxes (Details) [Line Items]
Open Tax Year	2008

Note_8_Income_Taxes_Details_Pr

Note 8 - Income Taxes (Details) - Provision for Income Taxes (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Provision for Income Taxes [Abstract]
Income taxes currently payable	$5,760	$3,599
Deferred income taxes	-1,578	-2,667
Provision for income taxes	$4,182	$932

Note_8_Income_Taxes_Details_Ta

Note 8 - Income Taxes (Details) - Tax Effects of Temporary Differences Related to Deferred Taxes Included in Other Liabilities: (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Deferred tax assets:
Loans acquired	$31,413	$16,925
FDIC true-up liability	2,797	2,792
Allowance for loan losses	11,444	11,749
Valuation of foreclosed assets	15,420	14,167
Tax NOLs from acquisition	11,819	11,819
Deferred compensation payable	2,533	1,536
Vacation compensation	1,630	1,456
Accumulated depreciation		1,937
Loan interest	2,099	1,693
Accrued pension and profit sharing	1,793	1,793
Accrued equity and other compensation	4,814	3,356
Acquired securities	2,083	2,568
Accrued merger related costs	2,730	2,464
Basis difference in partnership investments	812	617
Unrealized loss on available-for-sale securities		862
Other	3,173	1,666
Gross deferred tax assets	94,560	77,400
Deferred tax liabilities:
Goodwill and other intangible amortization	-25,780	-16,953
FDIC acquired assets	-1,754	-4,377
Deferred loan fee income and expenses, net	-1,663	-1,515
FHLB stock dividends	-2,227	-1,160
Limitations under IRC Sec 382	-10,839	-11,169
Prepayment liabilities	-1,979	-1,141
Accumulated depreciation	-402
Unrealized gain on available-for-sale securities	-1,197
Other	-545	-337
Gross deferred tax liabilities	-46,386	-36,652
Net deferred tax asset, included in other assets	$48,174	$40,748

Note_8_Income_Taxes_Details_Re

Note 8 - Income Taxes (Details) - Reconciliation of Income Tax Expense (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Note 8 - Income Taxes (Details) - Reconciliation of Income Tax Expense [Line Items]
Computed at the statutory rate (35%)	$4,504	$1,849
Increase (decrease) in taxes resulting from:
State income taxes, net of federal tax benefit	308	47
Other differences, net	546	84
Actual tax provision	4,182	932
Tax Exempt Interest Income [Member]
Increase (decrease) in taxes resulting from:
Tax exempt interest income	-1,024	-933
Tax Exempt Earnings on Bank Owned Life Insurance [Member]
Increase (decrease) in taxes resulting from:
Tax exempt earnings on BOLI	($152)	($115)

Note_8_Income_Taxes_Details_Re1

Note 8 - Income Taxes (Details) - Reconciliation of Income Tax Expense (Parentheticals)	3 Months Ended
	Mar. 31, 2015
Note 8 - Income Taxes (Details) - Reconciliation of Income Tax Expense (Parentheticals) [Line Items]
Statutory rate	35.00%

Note_9_Other_Borrowings_and_Su2

Note 9 - Other Borrowings and Subordinated Debentures (Details) (USD $)	3 Months Ended
	Dec. 31, 2013	Mar. 31, 2015	Dec. 31, 2014
Note 9 - Other Borrowings and Subordinated Debentures (Details) [Line Items]
Unsecured Debt		$43,100,000	$43,100,000
Federal Home Loan Bank, Advances, Maturities Summary, Due in Next Twelve Months		40,000,000
Advances from Federal Home Loan Banks		242,000,000
Advances from Federal Home Loan Bank Available		821,700,000
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged		919,500,000
Metropolitan [Member]
Note 9 - Other Borrowings and Subordinated Debentures (Details) [Line Items]
Unsecured Debt	$46,000,000
Debt Instrument, Term	3 years

Note_9_Other_Borrowings_and_Su3

Note 9 - Other Borrowings and Subordinated Debentures (Details) - Debt (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Note 9 - Other Borrowings and Subordinated Debentures (Details) - Debt [Line Items]
Notes payable, due 04/30/2015 to 12/31/2016, 3.25%, floating rate, unsecured	$43,100	$43,100
	285,060	114,682
Trust preferred securities	62,994	20,620
Total other borrowings and subordinated debentures	348,054	135,302
Federal Home Loan Bank Advances [Member]
Note 9 - Other Borrowings and Subordinated Debentures (Details) - Debt [Line Items]
FHLB advances, due 2015 to 2033, 0.35% to 7.38% secured by residential real estate loans	241,960	71,582
Trust Preferred Securities Due 12/30/2033 [Member]
Note 9 - Other Borrowings and Subordinated Debentures (Details) - Debt [Line Items]
Trust preferred securities	20,620	20,620
Trust Preferred Securities Due 6/30/2035 [Member]
Note 9 - Other Borrowings and Subordinated Debentures (Details) - Debt [Line Items]
Trust preferred securities	11,444
Trust Preferred Securities Due 9/15/2037 [Member]
Note 9 - Other Borrowings and Subordinated Debentures (Details) - Debt [Line Items]
Trust preferred securities	10,310
Trust Preferred Securities Due 12/3/2033 [Member]
Note 9 - Other Borrowings and Subordinated Debentures (Details) - Debt [Line Items]
Trust preferred securities	5,155
Trust Preferred Securities Due 12/13/2034 [Member]
Note 9 - Other Borrowings and Subordinated Debentures (Details) - Debt [Line Items]
Trust preferred securities	5,155
Trust Preferred Securities, Due 6/6/2037 [Member]
Note 9 - Other Borrowings and Subordinated Debentures (Details) - Debt [Line Items]
Trust preferred securities	$10,310

Note_9_Other_Borrowings_and_Su4

Note 9 - Other Borrowings and Subordinated Debentures (Details) - Debt (Parentheticals)	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Note 9 - Other Borrowings and Subordinated Debentures (Details) - Debt (Parentheticals) [Line Items]
Floating rate	3.25%	3.25%
Federal Home Loan Bank Advances [Member] | Minimum [Member]
Note 9 - Other Borrowings and Subordinated Debentures (Details) - Debt (Parentheticals) [Line Items]
FHLB advances, interest rate	0.35%	0.35%
Federal Home Loan Bank Advances [Member] | Maximum [Member]
Note 9 - Other Borrowings and Subordinated Debentures (Details) - Debt (Parentheticals) [Line Items]
FHLB advances, interest rate	7.38%	7.38%
Trust Preferred Securities Due 12/30/2033 [Member] | London Interbank Offered Rate (LIBOR) [Member]
Note 9 - Other Borrowings and Subordinated Debentures (Details) - Debt (Parentheticals) [Line Items]
Floating rate	2.80%	2.80%
Trust Preferred Securities Due 6/30/2035 [Member] | London Interbank Offered Rate (LIBOR) [Member]
Note 9 - Other Borrowings and Subordinated Debentures (Details) - Debt (Parentheticals) [Line Items]
Floating rate	1.75%
Trust Preferred Securities Due 9/15/2037 [Member] | London Interbank Offered Rate (LIBOR) [Member]
Note 9 - Other Borrowings and Subordinated Debentures (Details) - Debt (Parentheticals) [Line Items]
Floating rate	1.37%
Trust Preferred Securities Due 12/3/2033 [Member] | London Interbank Offered Rate (LIBOR) [Member]
Note 9 - Other Borrowings and Subordinated Debentures (Details) - Debt (Parentheticals) [Line Items]
Floating rate	2.88%
Trust Preferred Securities Due 12/13/2034 [Member] | London Interbank Offered Rate (LIBOR) [Member]
Note 9 - Other Borrowings and Subordinated Debentures (Details) - Debt (Parentheticals) [Line Items]
Floating rate	2.00%
Trust Preferred Securities, Due 6/6/2037 [Member] | London Interbank Offered Rate (LIBOR) [Member]
Note 9 - Other Borrowings and Subordinated Debentures (Details) - Debt (Parentheticals) [Line Items]
Floating rate	1.57%

Note_9_Other_Borrowings_and_Su5

Note 9 - Other Borrowings and Subordinated Debentures (Details) - Aggregate Annual Maturities of Long-Term Debt (USD $)	Mar. 31, 2015
In Thousands, unless otherwise specified
Aggregate Annual Maturities of Long-Term Debt [Abstract]
2015	$149,016
2016	38,348
2017	75,417
2018	6,558
2019	2,743
Thereafter	75,972
Total	$348,054

Note_11_Common_Stock_Details

Note 11 - Common Stock (Details) (USD $)	Mar. 31, 2015	Mar. 04, 2014	Jul. 23, 2012
In Millions, except Share data, unless otherwise specified
Capital Stock Disclosure [Abstract]
Stock Repurchase Program, Number of Shares Authorized to be Repurchased			850,000
Percent of Oustanding Stock			5.00%
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased	154,136
Shelf Registration Statement Max Capital Allowed to Raise (in Dollars)		$300

Note_12_Undivided_Profits_Deta

Note 12 - Undivided Profits (Details) (USD $)	Mar. 31, 2015
In Millions, unless otherwise specified
Disclosure of Restrictions on Dividends, Loans and Advances Disclosure [Abstract]
Statutory Accounting Practices, Statutory Amount Available for Dividend Payments without Regulatory Approval (in Dollars)	$8.10
Tier One Leverage Capital Required to be Well Capitalized to Average Assets	5.00%
Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets	8.00%
Capital Required to be Well Capitalized to Risk Weighted Assets	10.00%
Common Equity Tier 1 Ratio Required to be Well Capitalized	6.50%
Capital to Risk Weighted Assets	13.57%

Note_13_Stock_Based_Compensati2

Note 13 - Stock Based Compensation (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Allocated Share-based Compensation Expense	$361,000	$485,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options	901,000	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value	2,240,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value	1,932,000
Share Price (in Dollars per share)	$45.47
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value	$188,000	$193,000

Note_13_Stock_Based_Compensati3

Note 13 - Stock Based Compensation (Details) - Stock Compensation Plans (USD $)	3 Months Ended
	Mar. 31, 2015
Stock Compensation Plans [Abstract]
Stock Options Outstanding, Number of Shares	119,690
Stock Options Outstanding, Weighted Average Exercise Price	$27.72
Non-Vested Stock Awards Outstanding, Number of Shares	226,932,000
Non-Vested Stock Awards Outstanding, Weighted Average Grant-Date Fair-Value	$31.88
Exercisable, March 31, 2015	109,280
Exercisable, March 31, 2015	$27.79
Granted	113,695
Granted	$42.76
Granted	57,225,000
Granted	$41.02
Stock Options Exercised	-10,410
Stock Options Exercised	$26.90
Stock Awards Vested	-79,984,000
Stock Awards Vested	$40.31
Forfeited/Expired	-9,500,000
Forfeited/Expired	$39.56
Stock Options Outstanding, Number of Shares	222,975
Stock Options Outstanding, Weighted Average Exercise Price	$35.42
Non-Vested Stock Awards Outstanding, Number of Shares	194,673,000
Non-Vested Stock Awards Outstanding, Weighted Average Grant-Date Fair-Value	$30.73

Note_13_Stock_Based_Compensati4

Note 13 - Stock Based Compensation (Details) - Stock Options Oustanding by Range of Exercise Prices (USD $)	3 Months Ended
	Mar. 31, 2015
Range01 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices - Lower limit	$24.50
Range of Exercise Prices - Upper limit	$24.50
Number of shares outstanding (in Shares)	15,250
Options outstanding weighted average remaining contractual life (Years)	54 days
Options outstanding weighted average exercise price	$24.50
Number of shares exercisable (in Shares)	15,250
Options exercisable weighted average exercise price	$24.50
Range 02 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices - Lower limit	$26.19
Range of Exercise Prices - Upper limit	$27.67
Number of shares outstanding (in Shares)	30,600
Options outstanding weighted average remaining contractual life (Years)	1 year 47 days
Options outstanding weighted average exercise price	$26.21
Number of shares exercisable (in Shares)	30,600
Options exercisable weighted average exercise price	$26.21
Range 03 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices - Lower limit	$28.42
Range of Exercise Prices - Upper limit	$28.42
Number of shares outstanding (in Shares)	32,300
Options outstanding weighted average remaining contractual life (Years)	2 years 58 days
Options outstanding weighted average exercise price	$28.42
Number of shares exercisable (in Shares)	32,300
Options exercisable weighted average exercise price	$28.42
Range 04 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices - Lower limit	$30.31
Range of Exercise Prices - Upper limit	$30.31
Number of shares outstanding (in Shares)	31,130
Options outstanding weighted average remaining contractual life (Years)	3 years 58 days
Options outstanding weighted average exercise price	$30.31
Number of shares exercisable (in Shares)	31,130
Options exercisable weighted average exercise price	$30.31
Range 05 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices - Lower limit	$40.57
Range of Exercise Prices - Upper limit	$40.57
Number of shares outstanding (in Shares)	48,690
Options outstanding weighted average remaining contractual life (Years)	9 years 9 months
Options outstanding weighted average exercise price	$40.57
Range 06 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices - Lower limit	$44.40
Range of Exercise Prices - Upper limit	$44.40
Number of shares outstanding (in Shares)	65,005
Options outstanding weighted average remaining contractual life (Years)	9 years 357 days
Options outstanding weighted average exercise price	$44.40

Note_14_Additional_Cash_Flow_I2

Note 14 - Additional Cash Flow Information (Details) - Additional Cash Flow Information (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Note 14 - Additional Cash Flow Information (Details) - Additional Cash Flow Information [Line Items]
Interest paid	$3,372	$3,447
Income taxes paid	7,274	1,266
Transfers of Loans Not Covered by FDIC Loss Share to Foreclosed Assets Held-for-sale [Member]
Note 14 - Additional Cash Flow Information (Details) - Additional Cash Flow Information [Line Items]
Transfers to foreclosed assets	2,774	1,386
Transfers of Loans Acquired Covered by FDIC Loss Share to Foreclosed Assets Covered by FDIC Loss Share [Member]
Note 14 - Additional Cash Flow Information (Details) - Additional Cash Flow Information [Line Items]
Transfers to foreclosed assets	435	520
Transfers of Premises Held-for-sale to Foreclosed Assets Held-for-sale [Member]
Note 14 - Additional Cash Flow Information (Details) - Additional Cash Flow Information [Line Items]
Transfers to foreclosed assets	$6,126

Note_15_Other_Operating_Expens2

Note 15 - Other Operating Expenses (Details) - Other Operating Expenses (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Other Operating Expenses [Abstract]
Professional services	$1,804	$1,354
Postage	933	915
Telephone	861	701
Credit card expense	1,989	1,706
Operating supplies	454	516
Amortization of intangibles	899	453
Branch right sizing expense	35	3,878
Other expense	5,131	3,847
Total other operating expenses	$12,106	$13,370

Note_17_Commitments_and_Credit1

Note 17 - Commitments and Credit Risk (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Note 17 - Commitments and Credit Risk (Details) [Line Items]
Letters of Credit Outstanding, Amount	27,073,000	$16,217,000
Credit Card Commitments to Extend Credit [Member]
Note 17 - Commitments and Credit Risk (Details) [Line Items]
Commitments and Contingencies	493,685,000	480,653,000
Other Loan Commitments to Extend Credit [Member]
Note 17 - Commitments and Credit Risk (Details) [Line Items]
Commitments and Contingencies	760,230,000	439,053,000
Standby Letters of Credit [Member]
Note 17 - Commitments and Credit Risk (Details) [Line Items]
Deferred Revenue	5,000	$13,000
Minimum [Member]
Note 17 - Commitments and Credit Risk (Details) [Line Items]
Letters of Credit Term	9 months
Maximum [Member]
Note 17 - Commitments and Credit Risk (Details) [Line Items]
Letters of Credit Term	15 years

Note_18_Preferred_Stock_Detail

Note 18 - Preferred Stock (Details)	0 Months Ended	11 Months Ended	0 Months Ended	1 Months Ended
	Feb. 19, 2016	Feb. 18, 2016	Feb. 27, 2015	Mar. 31, 2015
Series A Preferred Stock [Member] | Scenario, Forecast [Member]
Note 18 - Preferred Stock (Details) [Line Items]
Preferred Stock, Dividend Rate, Percentage	9.00%	1.00%
Series A Preferred Stock [Member] | Community First Bancshares, Inc. [Member]
Note 18 - Preferred Stock (Details) [Line Items]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in Shares)			30,852
Series A Preferred Stock [Member]
Note 18 - Preferred Stock (Details) [Line Items]
Preferred Stock, Dividend Rate, Percentage				1.00%
Community First Bancshares, Inc. [Member]
Note 18 - Preferred Stock (Details) [Line Items]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in Shares)			6,552,915

Note_19_Fair_Value_Measurement2

Note 19 - Fair Value Measurements (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Note 19 - Fair Value Measurements (Details) [Line Items]
Real Estate Acquired Through Foreclosure	50,723,000	$44,856,000
Impaired Financing Receivable, Related Allowance	2,110,000	2,065,000
Collateral Dependent Loans [Member]
Note 19 - Fair Value Measurements (Details) [Line Items]
Impaired Financing Receivable, Related Allowance	880,000	733,000
Commercial and Residential Real Estate Collateral [Member] | Minimum [Member]
Note 19 - Fair Value Measurements (Details) [Line Items]
Fair Value Percentage of Collateral Discount	10.00%
Commercial and Residential Real Estate Collateral [Member] | Maximum [Member]
Note 19 - Fair Value Measurements (Details) [Line Items]
Fair Value Percentage of Collateral Discount	40.00%
Special Mention or Worse [Member]
Note 19 - Fair Value Measurements (Details) [Line Items]
Collateral Dependent Loans Amount at Which Testing Begins	500,000
Collateral Dependent Loans Amount At Which All Loans Are Tested	1,500,000
Foreclosed Assets Not Covered By FDIC Loss Share [Member]
Note 19 - Fair Value Measurements (Details) [Line Items]
Real Estate Acquired Through Foreclosure	50,700,000	$44,900,000

Note_19_Fair_Value_Measurement3

Note 19 - Fair Value Measurements (Details) - Fair Value of Financial Assets Measured on a Recurring Basis (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Available-for-sale securities
Available-for-sale securities	$707,383	$305,283
Assets held in trading accounts	6,528	6,987
US Treasury Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Available-for-sale securities
Available-for-sale securities	4,008	3,992
US Treasury Securities [Member]
Available-for-sale securities
Available-for-sale securities	4,008	3,992
US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Available-for-sale securities
Available-for-sale securities	346,315	272,816
US Government Agencies Debt Securities [Member]
Available-for-sale securities
Available-for-sale securities	346,315	272,816
Mortgage-backed Securities, Issued by Private Enterprises [Member] | Fair Value, Inputs, Level 2 [Member]
Available-for-sale securities
Available-for-sale securities	312,011	1,572
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Available-for-sale securities
Available-for-sale securities	312,011	1,572
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Available-for-sale securities
Available-for-sale securities	13,452	6,540
US States and Political Subdivisions Debt Securities [Member]
Available-for-sale securities
Available-for-sale securities	13,452	6,540
Other Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Available-for-sale securities
Other securities	31,597	20,363
Other Securities [Member]
Available-for-sale securities
Available-for-sale securities	31,597	20,363
Other securities	31,597	20,363
Fair Value, Inputs, Level 1 [Member]
Available-for-sale securities
Assets held in trading accounts	2,809	3,320
Fair Value, Inputs, Level 2 [Member]
Available-for-sale securities
Assets held in trading accounts	$3,719	$3,667

Note_19_Fair_Value_Measurement4

Note 19 - Fair Value Measurements (Details) - Fair Value of Financial Assets Measured on a Nonrecurring Basis (USD $)	Mar. 31, 2015		Dec. 31, 2014
ASSETS
Impaired loans	$16,915,000		$14,669,000
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Nonrecurring [Member]
ASSETS
Impaired loans		[1],[2]		[1],[2]
Foreclosed assets held for sale		[1]		[1]
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Nonrecurring [Member]
ASSETS
Impaired loans		[1],[2]		[1],[2]
Foreclosed assets held for sale		[1]		[1]
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member]
ASSETS
Impaired loans	14,731,000	[1],[2]	12,276,000	[1],[2]
Foreclosed assets held for sale	2,029,000	[1]	3,417,000	[1]
Fair Value, Measurements, Nonrecurring [Member]
ASSETS
Impaired loans	14,731,000	[1],[2]	12,276,000	[1],[2]
Foreclosed assets held for sale	$2,029	[1]	$3,417,000	[1]
[1]	These amounts represent the resulting carrying amounts on the Consolidated Balance Sheets for impaired collateral dependent loans and foreclosed assets held for sale for which fair value re-measurements took place during the period.
[2]	Specific allocations of $880,000 and $733,000 were related to the impaired collateral dependent loans for which fair value re-measurements took place during the periods ended March 31, 2015 and December 31, 2014, respectively

Note_19_Fair_Value_Measurement5

Note 19 - Fair Value Measurements (Details) - Estimated Fair Values and Related Carrying Amounts of Financial Instruments (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Financial assets:
Financial Assets, Carrying Amount	$7,817,824	$4,643,354
Financial liabilities:
Financial Liabilities, Carrying Amount	6,804,087	4,149,035
Non-Interest Bearing Transaction Accounts [Member] | Fair Value, Inputs, Level 2 [Member]
Financial liabilities:
Financial Liabilities, Fair Value Measurement	1,123,966	889,260
Non-Interest Bearing Transaction Accounts [Member]
Financial liabilities:
Financial Liabilities, Carrying Amount	1,123,966	889,260
Financial Liabilities, Fair Value Measurement	1,123,966	889,260
Interest Bearing Transaction Accounts and Savings Deposits [Member] | Fair Value, Inputs, Level 2 [Member]
Financial liabilities:
Financial Liabilities, Fair Value Measurement	3,627,870	2,006,271
Interest Bearing Transaction Accounts and Savings Deposits [Member]
Financial liabilities:
Financial Liabilities, Carrying Amount	3,627,870	2,006,271
Financial Liabilities, Fair Value Measurement	3,627,870	2,006,271
Time Deposits [Member] | Fair Value, Inputs, Level 3 [Member]
Financial liabilities:
Financial Liabilities, Fair Value Measurement	1,523,149	967,900
Time Deposits [Member]
Financial liabilities:
Financial Liabilities, Carrying Amount	1,522,872	965,187
Financial Liabilities, Fair Value Measurement	1,523,149	967,900
Federal Funds Purchased and Securities Sold under Agreements to Repurchase [Member] | Fair Value, Inputs, Level 2 [Member]
Financial liabilities:
Financial Liabilities, Fair Value Measurement	111,484	110,586
Federal Funds Purchased and Securities Sold under Agreements to Repurchase [Member]
Financial liabilities:
Financial Liabilities, Carrying Amount	111,484	110,586
Financial Liabilities, Fair Value Measurement	111,484	110,586
Other Borrowings [Member] | Fair Value, Inputs, Level 2 [Member]
Financial liabilities:
Financial Liabilities, Fair Value Measurement	288,198	114,698
Other Borrowings [Member]
Financial liabilities:
Financial Liabilities, Carrying Amount	285,060	114,682
Financial Liabilities, Fair Value Measurement	288,198	114,698
Subordinated Debentures [Member] | Fair Value, Inputs, Level 2 [Member]
Financial liabilities:
Financial Liabilities, Fair Value Measurement	58,039	16,115
Subordinated Debentures [Member]
Financial liabilities:
Financial Liabilities, Carrying Amount	62,994	20,620
Financial Liabilities, Fair Value Measurement	58,039	16,115
Interest Payable [Member] | Fair Value, Inputs, Level 2 [Member]
Financial liabilities:
Financial Liabilities, Fair Value Measurement	2,445	1,147
Interest Payable [Member]
Financial liabilities:
Financial Liabilities, Carrying Amount	2,445	1,147
Financial Liabilities, Fair Value Measurement	2,445	1,147
Fair Value, Inputs, Level 1 [Member] | Cash and Cash Equivalents [Member]
Financial assets:
Financial Assets, Fair Value Measurement	685,828	335,909
Fair Value, Inputs, Level 2 [Member] | Interest Bearing Balances Due from Banks - Time [Member]
Financial assets:
Financial Assets, Fair Value Measurement	24,986
Fair Value, Inputs, Level 2 [Member] | Held-to-Maturity Securities [Member]
Financial assets:
Financial Assets, Fair Value Measurement	913,037	780,533
Fair Value, Inputs, Level 2 [Member] | Interest Receivable [Member]
Financial assets:
Financial Assets, Fair Value Measurement	24,719	16,774
Fair Value, Inputs, Level 3 [Member] | Mortgage Loans Held For Sale [Member]
Financial assets:
Financial Assets, Fair Value Measurement	25,513	21,265
Fair Value, Inputs, Level 3 [Member] | Loans1 [Member]
Financial assets:
Financial Assets, Fair Value Measurement	2,095,657	2,022,889
Fair Value, Inputs, Level 3 [Member] | Loans Acquired, Not Covered By FDIC Loss Share [Member]
Financial assets:
Financial Assets, Fair Value Measurement	2,429,407	560,651
Fair Value, Inputs, Level 3 [Member] | Loans Acquired, Covered by FDIC Loss Share [Member]
Financial assets:
Financial Assets, Fair Value Measurement	102,933	105,789
Fair Value, Inputs, Level 3 [Member] | FDIC Indemnification Asset [Member]
Financial assets:
Financial Assets, Fair Value Measurement	15,965	22,663
Cash and Cash Equivalents [Member]
Financial assets:
Financial Assets, Carrying Amount	685,828	335,909
Financial Assets, Fair Value Measurement	685,828	335,909
Interest Bearing Balances Due from Banks - Time [Member]
Financial assets:
Financial Assets, Carrying Amount	25,000
Financial Assets, Fair Value Measurement	24,986
Held-to-Maturity Securities [Member]
Financial assets:
Financial Assets, Carrying Amount	902,423	777,587
Financial Assets, Fair Value Measurement	913,037	780,533
Mortgage Loans Held For Sale [Member]
Financial assets:
Financial Assets, Carrying Amount	25,513	21,265
Financial Assets, Fair Value Measurement	25,513	21,265
Interest Receivable [Member]
Financial assets:
Financial Assets, Carrying Amount	24,719	16,774
Financial Assets, Fair Value Measurement	24,719	16,774
Loans1 [Member]
Financial assets:
Financial Assets, Carrying Amount	2,086,197	2,024,693
Financial Assets, Fair Value Measurement	2,095,657	2,022,889
Loans Acquired, Not Covered By FDIC Loss Share [Member]
Financial assets:
Financial Assets, Carrying Amount	2,418,440	575,980
Financial Assets, Fair Value Measurement	2,429,407	560,651
Loans Acquired, Covered by FDIC Loss Share [Member]
Financial assets:
Financial Assets, Carrying Amount	102,468	106,933
Financial Assets, Fair Value Measurement	102,933	105,789
FDIC Indemnification Asset [Member]
Financial assets:
Financial Assets, Carrying Amount	15,965	22,663
Financial Assets, Fair Value Measurement	$15,965	$22,663