Simmons First National (SFNC) 10-Q 6 Nov 17 2017 Q3 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2017	Oct. 31, 2017
Document Information [Line Items]
Entity Registrant Name	SIMMONS FIRST NATIONAL CORP
Entity Central Index Key	90,498
Trading Symbol	sfnc
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	Yes
Entity Common Stock, Shares Outstanding (in shares)		45,970,797
Document Type	10-Q
Document Period End Date	Sep. 30, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q3
Amendment Flag	false

Consolidated Balance Sheets (Cu

Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Cash and non-interest bearing balances due from banks	$ 108,675	$ 117,007
Interest bearing balances due from banks and federal funds sold	323,615	168,652
Cash and cash equivalents	432,290	285,659
Interest bearing balances due from banks - time	4,059	4,563
Held-to-maturity	406,033	462,096
Available-for-sale	1,317,420	1,157,354
Total investments	1,723,453	1,619,450
Mortgage loans held for sale	12,614	27,788
Assets held in trading accounts	49	41
Other assets held for sale	182,378
Loans:
Legacy loans	5,211,312	4,327,207
Allowance for loan losses	(42,717)	(36,286)
Loans acquired, net of discount and allowance	1,092,039	1,305,683
Net loans	6,260,634	5,596,604
Premises and equipment	224,376	199,359
Premises held for sale		6,052
Foreclosed assets and other real estate owned	31,477	26,895
Interest receivable	30,749	27,788
Bank owned life insurance	148,984	138,620
Goodwill	375,731	348,505
Other intangible assets	55,501	52,959
Other assets	53,075	65,773
Total assets	9,535,370	8,400,056
Deposits:
Non-interest bearing transaction accounts	1,669,860	1,491,676
Interest bearing transaction accounts and savings deposits	4,344,779	3,956,483
Time deposits	1,310,951	1,287,060
Total deposits	7,325,590	6,735,219
Federal funds purchased and securities sold under agreements to repurchase	121,687	115,029
Other borrowings	522,541	273,159
Subordinated debentures	67,418	60,397
Other liabilities held for sale	176,964
Accrued interest and other liabilities	63,971	65,141
Total liabilities	8,278,171	7,248,945
Stockholders’ equity:
Common stock, Class A, $0.01 par value; 120,000,000 shares authorized; 32,212,242 and 31,277,723 shares issued and outstanding at September 30, 2017 and December 31, 2016, respectively	322	313
Surplus	763,443	711,976
Undivided profits	504,085	454,034
Accumulated other comprehensive loss	(10,651)	(15,212)
Total stockholders’ equity	1,257,199	1,151,111
Total liabilities and stockholders’ equity	$ 9,535,370	$ 8,400,056

Consolidated Balance Sheets (C3

Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares	Sep. 30, 2017	Dec. 31, 2016
Common stock Class A, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock Class A, shares authorized (in shares)	120,000,000	120,000,000
Common stock Class A, shares issued (in shares)	32,212,242	31,277,723
Common stock Class A, shares outstanding (in shares)	32,212,242	31,277,723

Consolidated Statements of Inco

Consolidated Statements of Income (Unaudited) - USD ($)		3 Months Ended		9 Months Ended
		Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Loans		$ 77,457,000	$ 65,078,000	$ 219,734,000	$ 194,765,000
Interest bearing balances due from banks and federal funds sold		650,000	263,000	986,000	511,000
Investment securities		9,218,000	7,774,000	28,659,000	24,779,000
Mortgage loans held for sale		159,000	299,000	430,000	872,000
Assets held in trading accounts			4,000		13,000
TOTAL INTEREST INCOME		87,484,000	73,418,000	249,809,000	220,940,000
INTEREST EXPENSE
Deposits		6,030,000	3,732,000	15,050,000	11,162,000
Federal funds purchased and securities sold under agreements to repurchase		83,000	59,000	250,000	183,000
Other borrowings		1,875,000	1,048,000	4,628,000	3,114,000
Subordinated debentures		677,000	516,000	1,870,000	1,603,000
TOTAL INTEREST EXPENSE		8,665,000	5,355,000	21,798,000	16,062,000
NET INTEREST INCOME		78,819,000	68,063,000	228,011,000	204,878,000
Provision for loan losses		5,462,000	8,294,000	16,792,000	15,733,000
NET INTEREST INCOME AFTER PROVISION FOR LOAN LOSSES		73,357,000	59,769,000	211,219,000	189,145,000
NON-INTEREST INCOME
Trust income		4,225,000	3,873,000	12,550,000	11,160,000
Service charges on deposit accounts		8,907,000	8,771,000	25,492,000	23,748,000
Other service charges and fees		2,433,000	3,261,000	7,145,000	8,846,000
Mortgage and SBA lending income		3,219,000	4,339,000	9,603,000	11,903,000
Investment banking income		680,000	1,131,000	2,007,000	2,999,000
Debit and credit card fees		8,864,000	7,825,000	25,457,000	22,713,000
Bank owned life insurance income		725,000	606,000	2,402,000	2,429,000
Gain on sale of securities		3,000	315,000	2,302,000	4,403,000
Other income		7,276,000	6,755,000	15,178,000	15,066,000
TOTAL NON-INTEREST INCOME		36,332,000	36,876,000	102,136,000	103,267,000
NON-INTEREST EXPENSE
Salaries and employee benefits		35,285,000	31,784,000	105,026,000	99,660,000
Occupancy expense, net		4,928,000	4,690,000	14,459,000	14,151,000
Furniture and equipment expense		4,840,000	4,272,000	13,833,000	12,296,000
Other real estate and foreclosure expense		1,071,000	1,849,000	2,177,000	3,782,000
Deposit insurance		1,020,000	1,136,000	2,480,000	3,380,000
Merger related costs		752,000	1,524,000	7,879,000	1,989,000
Other operating expenses		18,263,000	17,179,000	58,035,000	53,102,000
TOTAL NON-INTEREST EXPENSE		66,159,000	62,434,000	203,889,000	188,360,000
INCOME BEFORE INCOME TAXES		43,530,000	34,211,000	109,466,000	104,052,000
Provision for income taxes		14,678,000	10,782,000	35,429,000	34,209,000
NET INCOME		28,852,000	23,429,000	74,037,000	69,843,000
Preferred stock dividends					24,000
NET INCOME AVAILABLE TO COMMON STOCKHOLDERS		$ 28,852,000	$ 23,429,000	$ 74,037,000	$ 69,819,000
BASIC EARNINGS PER SHARE (in dollars per share)		$ 0.90	$ 0.77	$ 2.33	$ 2.29
DILUTED EARNINGS PER SHARE (in dollars per share)	[1]	$ 0.89	$ 0.76	$ 2.31	$ 2.28
[1]	Stock options to purchase 3,305 and 61,395 shares for the three and nine months ended September 30, 2016 were not included in the diluted EPS calculation because the exercise price of those options exceeded the average market price for each period. There were no stock options excluded from the earnings per share calculation due to the related exercise price exceeding the average market price for the three and nine months ended September 30, 2017.

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
NET INCOME	$ 28,852	$ 23,429	$ 74,037	$ 69,843
OTHER COMPREHENSIVE INCOME
Unrealized holding gains (losses) arising during the period on available-for-sale securities	1,107	(3,175)	9,807	12,271
Less: Reclassification adjustment for realized gains included in net income	3	315	2,302	4,403
Other comprehensive gain (loss), before tax effect	1,104	(3,490)	7,505	7,868
Less: Tax effect of other comprehensive gain (loss)	433	(1,369)	2,944	3,086
TOTAL OTHER COMPREHENSIVE INCOME (LOSS)	671	(2,121)	4,561	4,782
COMPREHENSIVE INCOME	$ 29,523	$ 21,308	$ 78,598	$ 74,625

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
OPERATING ACTIVITIES
Net income	$ 74,037,000	$ 69,843,000
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	14,589,000	12,229,000
Provision for loan losses	16,792,000	15,733,000
Gain on sale of investments	(2,302,000)	(4,403,000)
Net accretion of investment securities and assets	(19,472,000)	(22,863,000)
Net amortization on borrowings	319,000	314,000
Stock-based compensation expense	5,675,000	2,679,000
Gain on sale of premises and equipment, net of impairment	(615,000)	(159,000)
Gain on sale of foreclosed assets and other real estate owned	(801,000)	(1,731,000)
Gain on sale of mortgage loans held for sale	(8,809,000)	(11,150,000)
Fair value write-down of closed branches	325,000	3,000,000
Deferred income taxes	4,962,000	1,070,000
Increase in cash surrender value of bank owned life insurance	(2,402,000)	(2,429,000)
Originations of mortgage loans held for sale	(353,714,000)	(472,902,000)
Proceeds from sale of mortgage loans held for sale	377,697,000	486,248,000
Changes in assets and liabilities:
Interest receivable	(1,129,000)	(799,000)
Assets held in trading accounts	(8,000)	1,453,000
Other assets	8,249,000	16,680,000
Accrued interest and other liabilities	(9,738,000)	(13,950,000)
Income taxes payable	4,819,000	(2,286,000)
Net cash provided by operating activities	108,474,000	76,577,000
INVESTING ACTIVITIES
Net originations of loans	(427,789,000)	(140,240,000)
Decrease in due from banks - time	2,488,000	9,714,000
Purchases of premises and equipment, net	(28,971,000)	(8,840,000)
Proceeds from sale of premises and equipment	3,475,000	890,000
Purchases of other real estate owned	(1,021,000)
Proceeds from sale of foreclosed assets and other real estate owned	11,401,000	24,095,000
Proceeds from sale of available-for-sale securities	327,218,000	249,079,000
Proceeds from maturities of available-for-sale securities	76,615,000	137,832,000
Purchases of available-for-sale securities	(380,308,000)	(498,011,000)
Proceeds from maturities of held-to-maturity securities	57,896,000	215,846,000
Purchases of held-to-maturity securities	(860,000)	(6,162,000)
Proceeds from bank owned life insurance death benefits		2,043,000
Purchases of bank owned life insurance	(143,000)	(143,000)
Proceeds from the sale of insurance lines of business	3,707,000
Cash paid in business combinations, net of cash received	(22,000,000)
Cash received in business combinations, net of cash paid		106,419,000
Net cash (used in) provided by investing activities	(378,292,000)	92,522,000
FINANCING ACTIVITIES
Net change in deposits	201,395,000	21,428,000
Repayments of subordinated debentures		(594,000)
Dividends paid on preferred stock		(24,000)
Dividends paid on common stock	(23,986,000)	(21,227,000)
Net change in other borrowed funds	246,382,000	48,940,000
Net change in federal funds purchased and securities sold under agreements to repurchase	(10,505,000)	11,658,000
Net shares issued under stock compensation plans	2,545,000	3,247,000
Shares issued under employee stock purchase plan	618,000	586,000
Redemption of preferred stock		(30,852,000)
Net cash provided by financing activities	416,449,000	33,162,000
INCREASE IN CASH AND CASH EQUIVALENTS	146,631,000	202,261,000
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	285,659,000	252,262,000
CASH AND CASH EQUIVALENTS, END OF PERIOD	$ 432,290,000	$ 454,523,000

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Citizens National Bank [Member]Common Stock [Member]	Citizens National Bank [Member]Additional Paid-in Capital [Member]	Citizens National Bank [Member]	Hardeman County Investment Company, Inc. [Member]Common Stock [Member]	Hardeman County Investment Company, Inc. [Member]Additional Paid-in Capital [Member]	Hardeman County Investment Company, Inc. [Member]	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Total
Balance at Dec. 31, 2015							$ 30,852	$ 303	$ 662,378	$ (2,665)	$ 385,987	$ 1,076,855
Comprehensive income										4,782	69,843	74,625
Stock issued for employee stock purchase plan									586			586
Stock-based compensation plans, net								2	5,924			5,926
Stock issued for acquisition	$ 8	$ 41,244	$ 41,252
Preferred stock redeemed							$ (30,852)					(30,852)
Dividends on preferred stock											(24)	(24)
Dividends on common stock											(21,227)	(21,227)
Balance at Sep. 30, 2016								313	710,132	2,117	434,579	1,147,141
Comprehensive income										(17,329)	26,971	9,642
Stock-based compensation plans, net									1,844			1,844
Cash dividends											(7,516)	(7,516)
Balance at Dec. 31, 2016								313	711,976	(15,212)	454,034	1,151,111
Comprehensive income										4,561	74,037	78,598
Stock issued for employee stock purchase plan									618			618
Stock-based compensation plans, net								1	8,219			8,220
Stock issued for acquisition				$ 8	$ 42,630	$ 42,638
Dividends on common stock											(23,986)	(23,986)
Balance at Sep. 30, 2017								$ 322	$ 763,443	$ (10,651)	$ 504,085	$ 1,257,199

Consolidated Statements of Sto8

Consolidated Statements of Stockholders' Equity (Parentheticals) - $ / shares	3 Months Ended	9 Months Ended
	Dec. 31, 2016	Sep. 30, 2017	Sep. 30, 2016
Additional Paid-in Capital [Member]
Stock issued for employee stock purchase plan, shares (in shares)		13,001	15,735
Common Stock [Member] | Citizens National Bank [Member]
Stock issued for acquisition, shares (in shares)			835,741
Common Stock [Member] | Hardeman County Investment Company, Inc. [Member]
Stock issued for acquisition, shares (in shares)		799,970
Common Stock [Member]
Stock issued for compensation plans, shares (in shares)	10,109	122,138	137,706
Retained Earnings [Member]
Cash dividends, per share (in dollars per share)	$ 0.24	$ 0.75	$ 0.72

Note 1 - Basis of Presentation

Note 1 - Basis of Presentation	9 Months Ended
	Sep. 30, 2017
Notes to Financial Statements
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]	NOTE 1: The accompanying unaudited consolidated financial statements of Simmons First National Corporation (the “Company”) and its subsidiaries have been prepared based upon Securities and Exchange Commission (“SEC”) rules that permit reduced disclosures for interim periods. Certain information and footnote disclosures have been condensed or omitted in accordance with those rules and regulations. The accompanying consolidated balance sheet as of December 31, 2016, not 10 December 31, 2016, February 28, 2017. The preparation of financial statements, in accordance with accounting principles generally accepted in the United States (“US GAAP”), requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, income items and expenses and disclosure of contingent assets and liabilities. The estimates and assumptions used in the accompanying consolidated financial statements are based upon management’s evaluation of the relevant facts and circumstances as of the date of the consolidated financial statements and actual results may not Certain gains and fees were reclassified within non-interest income categories in the 2016 2017 not Recently Adopted Accounting Standards Premium Amortization on Purchased Callable Debt Securities March 2017, No. 2017 08, Receivables – Nonrefundable Fees and Other Costs (Topic 310 20 2017 08” not December 15, 2018, 2017 08 first 2017. not Employee Share-Based Payments March 2016, No. 2016 09, Compensation – Stock Compensation (Topic 718 2016 09” no 2016 09 2016 09 2016 09 December 15, 2016. not $22,000 $1.5 three nine September 30, 2017, Recently Issued Accounting Standards Derivatives and Hedging: Targeted Improvements August 2017, No. 2017 12, Derivatives and Hedging (Topic 815 2017 12” 1 2 3 4 5 December 15, 2018, not Stock Compensation: Scope of Modification Accounting May 2017, No. 2017 09, Compensation – Stock Compensation (Topic 718 2017 09” 1 2 718, may 2017 09 December 15, 2017, 2017 09 not Goodwill Impairment January 2017, No. 2017 04, Intangibles – Goodwill and Other (Topic 350 2017 04” 2 not December 15, 2019, 2017. 2017 04 not Statement of Cash Flows August 2016, No. 2016 15, Statement of Cash Flows (Topic 230 2016 15” December 15, 2017, may no not Credit Losses on Financial Instruments June 2016, No. 2016 13, Financial Instruments – Credit Losses (Topic 326 2016 13” 2016 13 December 15, 2019, one first one Leases February 2016, No. 2016 02, Leases (Topic 842 2016 02” December 15, 2018, September 30, 2017, not Financial Assets and Financial Liabilities January 2016, No. 2016 01, Financial Instruments – Overall (Subtopic 825 10 2016 01” December 15, 2017, 2016 01 not not Revenue Recognition – In May 2014, No. 2014 09, Revenue from Contracts with Customers (Topic 606 2014 09” July 2015, No. 2015 14, December 15, 2017. not not 2015 14, not not not There have been no 2016 10 not Acquisition Accounting, Loans Acquired The Company accounts for its acquisitions under ASC Topic 805, Business Combinations No 820. The Company evaluates loans acquired, other than purchased impaired loans, in accordance with the provisions of ASC Topic 310 20, Nonrefundable Fees and Other Costs 310 30, Loans and Debt Securities Acquired with Deteriorated Credit Quality not For impaired loans accounted for under ASC Topic 310 30, For further discussion of our acquisition and loan accounting, see Note 2, 6, 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 EPS for the three nine September 30, 2017 2016: Three Months Ended Nine Months Ended (In thousands, except per share data) 2017 2016 2017 2016 Net income available to common shareholders $ 28,852 $ 23,429 $ 74,037 $ 69,819 Average common shares outstanding 32,214 30,621 31,797 30,434 Average potential dilutive common shares 210 223 210 223 Average diluted common shares 32,424 30,844 32,007 30,657 Basic earnings per share $ 0.90 $ 0.77 $ 2.33 $ 2.29 Diluted earnings per share (1) $ 0.89 $ 0.76 $ 2.31 $ 2.28 ________________________________ ( 1 Stock options to purchase 3,305 61,395 three nine September 30, 2016 not no three nine September 30, 2017.

Note 2 - Acquisitions

Note 2 - Acquisitions	9 Months Ended
	Sep. 30, 2017
Notes to Financial Statements
Mergers, Acquisitions and Dispositions Disclosures [Text Block]	NOTE 2: Hardeman County Investment Company, Inc. On May 15, 2017, 799,970 $42.6 May 15, 2017, $30.0 Prior to the acquisition, Hardeman conducted banking business from 10 $462.9 $251.6 $389.0 September 2017. 5 Goodwill of $29.4 two not A summary, at fair value, of the assets acquired and liabilities assumed in the Hardeman transaction, as of the acquisition date, is as follows: (In thousands) Acquired from Fair Value Fair Assets Acquired Cash and due from banks $ 8,001 $ -- $ 8,001 Interest bearing balances due from banks - time 1,984 -- 1,984 Investment securities 170,654 (316 ) 170,338 Loans acquired 257,641 (5,992 ) 251,649 Allowance for loan losses (2,382 ) 2,382 -- Foreclosed assets 1,083 (452 ) 631 Premises and equipment 9,905 1,258 11,163 Bank owned life insurance 7,819 -- 7,819 Goodwill 11,485 (11,485 ) -- Core deposit intangible -- 7,840 7,840 Other intangibles -- 830 830 Other assets 2,639 (1 ) 2,638 Total assets acquired $ 468,829 $ (5,936 ) $ 462,893 Liabilities Assumed Deposits: Non-interest bearing transaction accounts $ 76,555 $ -- $ 76,555 Interest bearing transaction accounts and savings deposits 214,872 -- 214,872 Time deposits 97,917 (368 ) 97,549 Total deposits 389,344 (368 ) 388,976 Securities sold under agreement to repurchase 17,163 -- 17,163 Other borrowings 3,000 -- 3,000 Subordinated debentures 6,702 -- 6,702 Accrued interest and other liabilities 1,891 1,924 3,815 Total liabilities assumed 418,100 1,556 419,656 Equity 50,729 (50,729 ) -- Total equity assumed 50,729 (50,729 ) -- Total liabilities and equity assumed $ 468,829 $ (49,173 ) $ 419,656 Net assets acquired 43,237 Purchase price 72,639 Goodwill $ 29,402 The purchase price allocation and certain fair value measurements remain preliminary due to the timing of the acquisition. Management will continue to review the estimated fair values and evaluate the assumed tax positions. The Company expects to finalize its analysis of the acquired assets and assumed liabilities in this transaction over the next few months, within one may The Company’s operating results for 2017 Citizens National Bank On September 9, 2016, 835,741 $41.3 September 9, 2016, $35.0 Prior to the acquisition, Citizens conducted banking business from 9 $585.1 $340.9 $509.9 October 2016. Goodwill of $23.4 two A summary, at fair value, of the assets acquired and liabilities assumed in the Citizens transaction, as of the acquisition date, is as follows: (In thousands) Acquired from Fair Value Fair Assets Acquired Cash and due from banks $ 131,467 $ (351 ) $ 131,116 Federal funds sold 10,000 -- 10,000 Investment securities 61,987 1 61,988 Loans acquired 350,361 (9,511 ) 340,850 Allowance for loan losses (4,313 ) 4,313 -- Foreclosed assets 4,960 (1,518 ) 3,442 Premises and equipment 6,746 1,339 8,085 Bank owned life insurance 6,632 -- 6,632 Core deposit intangible -- 5,075 5,075 Other intangibles -- 591 591 Other assets 17,364 6 17,370 Total assets acquired $ 585,204 $ (55 ) $ 585,149 Liabilities Assumed Deposits: Non-interest bearing transaction accounts $ 109,281 $ -- $ 109,281 Interest bearing transaction accounts and savings deposits 204,912 -- 204,912 Time deposits 195,664 -- 195,664 Total deposits 509,857 -- 509,857 Securities sold under agreement to repurchase 13,233 -- 13,233 FHLB borrowings 4,000 47 4,047 Accrued interest and other liabilities 3,558 1,530 5,088 Total liabilities assumed 530,648 1,577 532,225 Equity 54,556 (54,556 ) -- Total equity assumed 54,556 (54,556 ) -- Total liabilities and equity assumed $ 585,204 $ (52,979 ) $ 532,225 Net assets acquired 52,924 Purchase price 76,300 Goodwill $ 23,376 During 2017, The Company’s operating results for 2017 2016 The following is a description of the methods used to determine purchase price allocation for the fair values of significant assets and liabilities presented in the acquisitions above. Cash and due from banks, time deposits due from banks and federal funds sold Investment securities Loans acquired not not Foreclosed assets Premises and equipment Bank owned life insurance Goodwill Core deposit intangible Other intangibles Other assets Deposits Securities sold under agreement to repurchase FHLB and other borrowings Subordinated debentures – Accrued interest and other liabilities See Note 22 fourth 2017.

Note 3 - Investment Securities

Note 3 - Investment Securities	9 Months Ended
	Sep. 30, 2017
Notes to Financial Statements
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]	NOTE 3: The amortized cost and fair value of investment securities that are classified as held-to-maturity (“HTM”) and available-for-sale (“AFS”) are as follows: September 30, 2017 December 31, 2016 (In thousands) Amortized Gross Gross Unrealized Estimated Amortized Gross Gross Unrealized Estimated Held-to-Maturity U.S. Government agencies $ 66,928 $ 40 $ (140 ) $ 66,828 $ 76,875 $ 107 $ (182 ) $ 76,800 Mortgage-backed securities 16,972 56 (191 ) 16,837 19,773 63 (249 ) 19,587 State and political subdivisions 320,116 6,397 (55 ) 326,458 362,532 4,967 (842 ) 366,657 Other securities 2,017 -- -- 2,017 2,916 -- -- 2,916 Total HTM $ 406,033 $ 6,493 $ (386 ) $ 412,140 $ 462,096 $ 5,137 $ (1,273 ) $ 465,960 Available-for-Sale U.S. Treasury $ -- $ -- $ -- $ -- $ 300 $ -- $ -- $ 300 U.S. Government agencies 210,004 273 (2,057 ) 208,220 140,005 67 (2,301 ) 137,771 Mortgage-backed securities 973,111 120 (13,533 ) 959,698 885,783 178 (17,637 ) 868,324 State and political subdivisions 87,405 161 (2,744 ) 84,822 108,374 38 (5,469 ) 102,943 Other securities 63,295 1,385 -- 64,680 47,022 996 (2 ) 48,016 Total AFS $ 1,333,815 $ 1,939 $ (18,334 ) $ 1,317,420 $ 1,181,484 $ 1,279 $ (25,409 ) $ 1,157,354 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 AFS securities in the table above. Certain investment securities are valued at less than their historical cost. Total fair value of these investments at September 30, 2017, $1.2 69.7% 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 September 30, 2017: Less Than 12 Months 12 Months or More Total (In thousands) Estimated Gross Estimated Gross Estimated Gross Held-to-Maturity U.S. Government agencies $ 12,947 $ (53 ) $ 39,913 $ (87 ) $ 52,860 $ (140 ) Mortgage-backed securities 4,094 (42 ) 6,687 (149 ) 10,781 (191 ) State and political subdivisions 11,300 (41 ) 2,634 (14 ) 13,934 (55 ) Total HTM $ 28,341 $ (136 ) $ 49,234 $ (250 ) $ 77,575 $ (386 ) Available-for-Sale U.S. Government agencies $ 66,254 $ (750 ) $ 82,211 $ (1,307 ) $ 148,465 $ (2,057 ) Mortgage-backed securities 626,560 (7,458 ) 273,883 (6,075 ) 900,443 (13,533 ) State and political subdivisions 1,813 (32 ) 76,781 (2,712 ) 78,594 (2,744 ) Other securities -- -- 100 -- 100 -- Total AFS $ 694,627 $ (8,240 ) $ 432,975 $ (10,094 ) $ 1,127,602 $ (18,334 ) 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 not not Declines in the fair value of HTM and AFS 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 September 30, 2017, not September 30, 2017, Income earned on securities for the three nine September 30, 2017 2016, Three Months Ended Nine Months Ended (In thousands) 2017 2016 2017 2016 Taxable: Held-to-maturity $ 625 $ 771 $ 1,922 $ 3,094 Available-for-sale 5,949 4,005 18,003 12,931 Non-taxable: Held-to-maturity 2,135 2,617 6,635 8,162 Available-for-sale 509 381 2,099 592 Total $ 9,218 $ 7,774 $ 28,659 $ 24,779 The amortized cost and estimated fair value by maturity of securities are shown in the following table. Securities are classified according to their contractual maturities without consideration of principal amortization, potential prepayments or call options. Accordingly, actual maturities may Held-to-Maturity Available-for-Sale (In thousands) Amortized Fair Amortized Fair One year or less $ 50,829 $ 50,838 $ 21,211 $ 21,145 After one through five years 105,323 105,823 81,147 80,388 After five through ten years 99,399 100,902 14,532 14,427 After ten years 133,510 137,740 181,619 178,182 Securities not due on a single maturity date 16,972 16,837 973,111 959,698 Other securities (no maturity) -- -- 62,195 63,580 Total $ 406,033 $ 412,140 $ 1,333,815 $ 1,317,420 The carrying value, which approximates the fair value, of securities pledged as collateral, to secure public deposits and for other purposes, amounted to $985.8 September 30, 2017 $915.2 December 31, 2016. There were $3,000 no three September 30, 2017 $2.3 $5,000 nine September 30, 2017. $315,000 no three September 30, 2016 $4.4 no nine September 30, 2016. The state and political subdivision debt obligations are predominately non-rated bonds representing small issuances, primarily in Arkansas, Missouri, Tennessee and Texas issues, which are evaluated on an ongoing basis.

Note 4 - Other Assets and Other

Note 4 - Other Assets and Other Liabilities Held for Sale	9 Months Ended
	Sep. 30, 2017
Notes to Financial Statements
Disposal Groups, Including Discontinued Operations, Disclosure [Text Block]	NOTE 4: On August 28, 2017, $182.4 $177.0 The Company is actively marketing and exploring a plan to sell the acquired assets and liabilities of Heartland Bank and expects to complete a sale within one The following is a description of the methods used to determine the purchase price allocation for fair values of significant assets and liabilities presented in the Heartland Bank transaction. Cash and due from banks, time deposits due from banks and federal funds sold Investment securities no Loans acquired not not Premises and equipment Core deposit intangible Deposits not

Note 5 - Loans and Allowance fo

Note 5 - Loans and Allowance for Loan Losses	9 Months Ended
	Sep. 30, 2017
Notes to Financial Statements
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]	NOTE 5: At September 30, 2017, $6.303 $5.633 December 31, 2016. (In thousands) September 30, December 31, Consumer: Credit cards $ 176,316 $ 184,591 Other consumer 317,946 303,972 Total consumer 494,262 488,563 Real Estate: Construction 515,274 336,759 Single family residential 1,048,403 904,245 Other commercial 2,231,223 1,787,075 Total real estate 3,794,900 3,028,079 Commercial: Commercial 688,960 639,525 Agricultural 207,849 150,378 Total commercial 896,809 789,903 Other 25,341 20,662 Loans 5,211,312 4,327,207 Loans acquired, net of discount and allowance (1) 1,092,039 1,305,683 Total loans $ 6,303,351 $ 5,632,890 ______________________ ( 1 See Note 6, Loan Origination/Risk Management may five Consumer Real estate one Commercial one three Nonaccrual and Past Due Loans not may may not Nonaccrual loans, excluding loans acquired, segregated by class of loans, are as follows: (In thousands) September 30, December 31, Consumer: Credit cards $ 273 $ 373 Other consumer 3,880 1,793 Total consumer 4,153 2,166 Real estate: Construction 2,403 3,411 Single family residential 13,034 12,139 Other commercial 18,811 12,385 Total real estate 34,248 27,935 Commercial: Commercial 13,827 7,765 Agricultural 2,210 1,238 Total commercial 16,037 9,003 Total $ 54,438 $ 39,104 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 September 30, 2017 Consumer: Credit cards $ 655 $ 492 $ 1,147 $ 175,169 $ 176,316 $ 218 Other consumer 4,870 2,570 7,440 310,506 317,946 4 Total consumer 5,525 3,062 8,587 485,675 494,262 222 Real estate: Construction 440 1,478 1,918 513,356 515,274 -- Single family residential 5,516 4,785 10,301 1,038,102 1,048,403 -- Other commercial 3,032 8,945 11,977 2,219,246 2,231,223 -- Total real estate 8,988 15,208 24,196 3,770,704 3,794,900 -- Commercial: Commercial 991 10,745 11,736 677,224 688,960 10 Agricultural 469 1,793 2,262 205,587 207,849 -- Total commercial 1,460 12,538 13,998 882,811 896,809 10 Other -- -- -- 25,341 25,341 -- Total $ 15,973 $ 30,808 $ 46,781 $ 5,164,531 $ 5,211,312 $ 232 December 31, 2016 Consumer: Credit cards $ 716 $ 275 $ 991 $ 183,600 $ 184,591 $ 275 Other consumer 3,786 1,027 4,813 299,159 303,972 11 Total consumer 4,502 1,302 5,804 482,759 488,563 286 Real estate: Construction 1,420 1,246 2,666 334,093 336,759 -- Single family residential 6,310 5,927 12,237 892,008 904,245 14 Other commercial 4,212 6,722 10,934 1,776,141 1,787,075 -- Total real estate 11,942 13,895 25,837 3,002,242 3,028,079 14 Commercial: Commercial 2,040 5,296 7,336 632,189 639,525 -- Agricultural 121 1,215 1,336 149,042 150,378 -- Total commercial 2,161 6,511 8,672 781,231 789,903 -- Other -- -- -- 20,662 20,662 -- Total $ 18,605 $ 21,708 $ 40,313 $ 4,286,894 $ 4,327,207 $ 300 Impaired Loans not 90 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 Average Investment in Interest September 30, 2017 Three Months Ended Nine Months Ended Consumer: Credit cards $ 273 $ 273 $ -- $ 273 $ -- $ 283 $ 12 $ 292 $ 23 Other consumer 4,022 3,880 -- 3,880 -- 3,314 23 2,711 53 Total consumer 4,295 4,153 -- 4,153 -- 3,597 35 3,003 76 Real estate: Construction 2,652 1,496 907 2,403 220 2,582 17 2,828 56 Single family residential 13,782 12,450 584 13,034 53 12,878 85 12,772 251 Other commercial 19,065 7,260 10,983 18,243 2,052 19,306 121 19,313 380 Total real estate 35,499 21,206 12,474 33,680 2,325 34,766 223 34,913 687 Commercial: Commercial 13,774 4,805 8,112 12,917 3,996 14,543 84 12,943 255 Agricultural 2,184 1,059 -- 1,059 -- 1,562 8 1,645 32 Total commercial 15,958 5,864 8,112 13,976 3,996 16,105 92 14,588 287 Total $ 55,752 $ 31,223 $ 20,586 $ 51,809 $ 6,321 $ 54,468 $ 350 $ 52,504 $ 1,050 December 31, 2016 Three Months Ended Nine Months Ended Consumer: Credit cards $ 373 $ 373 $ -- $ 373 $ -- $ 439 $ -- $ 340 $ 10 Other consumer 1,836 1,797 3 1,800 1 1,324 14 882 32 Total consumer 2,209 2,170 3 2,173 1 1,763 14 1,222 42 Real estate: Construction 4,275 1,038 2,374 3,412 156 4,474 44 4,692 170 Single family residential 12,970 10,630 1,753 12,383 162 10,897 119 8,762 317 Other commercial 20,993 6,891 7,315 14,206 99 18,981 178 15,113 547 Total real estate 38,238 18,559 11,442 30,001 417 34,352 341 28,567 1,034 Commercial: Commercial 11,848 2,734 7,573 10,307 262 4,402 59 3,256 118 Agricultural 2,226 1,215 -- 1,215 -- 1,604 16 1,003 36 Total commercial 14,074 3,949 7,573 11,522 262 6,006 75 4,259 154 Total $ 54,521 $ 24,678 $ 19,018 $ 43,696 $ 680 $ 42,121 $ 430 $ 34,048 $ 1,230 At September 30, 2017, December 31, 2016, $51.8 $43.7 $6.3 $680,000 September 30, 2017 December 31, 2016, $350,000 $1.1 $54.5 $52.5 three nine September 30, 2017. three nine September 30, 2017 2016 not 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 Under ASC Topic 310 10 35 Subsequent Measurement 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 not 1 2 six 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 September 30, 2017 Real estate: Construction -- $ -- 1 $ 432 1 $ 432 Single-family residential 4 144 14 838 18 982 Other commercial 5 6,877 3 6,152 8 13,029 Total real estate 9 7,021 18 7,422 27 14,443 Commercial: Commercial 7 2,191 6 749 13 2,940 Total commercial 7 2,191 6 749 13 2,940 Total 16 $ 9,212 24 $ 8,171 40 $ 17,383 December 31, 2016 Consumer: Other consumer -- $ -- 1 $ 3 1 $ 3 Total consumer -- -- 1 3 1 3 Real estate: Construction -- -- 1 18 1 18 Single-family residential 3 167 29 2,078 32 2,245 Other commercial 23 9,048 2 780 25 9,828 Total real estate 26 9,215 32 2,876 58 12,091 Commercial: Commercial 15 1,783 5 297 20 2,080 Total commercial 15 1,783 5 297 20 2,080 Total 41 $ 10,998 38 $ 3,176 79 $ 14,174 The following table presents loans that were restructured as TDRs during the three nine September 30, 2017 2016, Modification Type (Dollars in thousands) Number of Balance Prior Balance at Change in Change in Financial Impact Three Months Ended September 30, 2017 Commercial: Commercial 1 $ 608 $ 607 $ 607 $ -- $ -- Total commercial 1 608 607 607 -- -- Total 1 $ 608 $ 607 $ 607 $ -- $ -- Three Months Ended September 30, 2016 Consumer: Other consumer 1 $ 47 $ 8 $ 8 $ -- $ -- Total consumer 1 47 8 8 -- -- Real Estate: Single-family residential 13 742 694 694 -- -- Other commercial 2 835 834 66 768 -- Total real estate 15 1,577 1,528 760 768 -- Commercial: Commercial 5 1,387 1,387 1,387 -- -- Total commercial 5 1,387 1,387 1,387 -- -- Total 21 $ 3,011 $ 2,923 $ 2,155 $ 768 $ -- Nine Months Ended September 30, 2017 Real estate: Construction 1 $ 456 $ 456 $ 456 $ -- $ -- Other commercial 2 7,362 7,362 7,362 -- 33 Total real estate 3 7,818 7,818 7,818 -- 33 Commercial: Commercial 10 1,419 1,407 1,368 39 -- Total commercial 10 1,419 1,407 1,368 39 -- Total 13 $ 9,237 $ 9,225 $ 9,186 $ 39 $ 33 Nine Months Ended September 30, 2016 Consumer: Other consumer 2 $ 50 $ 11 $ 11 $ -- $ -- Total consumer 2 50 11 11 -- -- Real estate: Single-family residential 22 1,538 1,487 933 554 -- Other commercial 27 9,797 9,765 8,633 1,132 -- Total real estate 49 11,335 11,252 9,566 1,686 -- Commercial: Commercial 16 1,987 1,959 1,959 -- -- Total commercial 16 1,987 1,959 1,959 -- -- Total 67 $ 13,372 $ 13,222 $ 11,536 $ 1,686 $ -- During the three September 30, 2017, one $608,000 no no not During the nine September 30, 2017, 13 $9.2 12 $33,000 no not During the three September 30, 2016, 21 $3.0 nine September 30, 2016, 67 $13.4 12 $402,000 no not There was one nine September 30, 2017, 12 $440,000 third 2017. one nine September 30, 2016, 12 $39,000 90 In addition to the TDRs that occurred during the period provided in the preceding tables, the Company had TDRs with pre-modification loan balances of $117,000 $166,500 September 30, 2017 2016, September 30, 2017 December 31, 2016, $1,180,000 $1,714,000, September 30, 2017 December 31, 2016, $5,275,000 $5,094,000, Credit Quality Indicators 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 8. 8 · Risk Rate 1 · Risk Rate 2 · Risk Rate 3 · Risk Rate 4 may may first may one may one · Risk Rate 5 may not not may may · Risk Rate 6 not not may · Risk Rate 7 may · Risk Rate 8 not not no not may Loans acquired are evaluated using this internal grading system. Loans acquired are evaluated individually and include purchased credit impaired loans of $7.9 $17.8 310 30 6 September 30, 2017 December 31, 2016, 310 20, $22.6 $47.8 6, 7 8 September 30, 2017 December 31, 2016, 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 not Classified loans for the Company include loans in Risk Ratings 6, 7 8. may not one 1 6 8 not not 2 not not 310 30, $130.6 $166.0 September 30, 2017 December 31, 2016, The following table presents a summary of loans by credit risk rating as of September 30, 2017 December 31, 2016, 310 30 1 4 (In thousands) Risk Rate Risk Rate Risk Rate Risk Rate Risk Rate Total September 30, 2017 Consumer: Credit cards $ 176,316 $ -- $ -- $ -- $ -- $ 176,316 Other consumer 313,725 -- 4,221 -- -- 317,946 Total consumer 490,041 -- 4,221 -- -- 494,262 Real estate: Construction 507,128 2,085 6,045 16 -- 515,274 Single family residential 1,022,886 2,553 22,675 289 -- 1,048,403 Other commercial 2,175,968 11,729 43,526 -- -- 2,231,223 Total real estate 3,705,982 16,367 72,246 305 -- 3,794,900 Commercial: Commercial 661,635 6,267 21,057 1 -- 688,960 Agricultural 205,524 26 2,276 23 -- 207,849 Total commercial 867,159 6,293 23,333 24 -- 896,809 Other 25,341 -- -- -- -- 25,341 Loans acquired 1,051,889 9,673 29,862 615 -- 1,092,039 Total $ 6,140,412 $ 32,333 $ 129,662 $ 944 $ -- $ 6,303,351 (In thousands) Risk Rate Risk Rate Risk Rate Risk Rate Risk Rate Total December 31, 2016 Consumer: Credit cards $ 183,943 $ -- $ 648 $ -- $ -- $ 184,591 Other consumer 301,632 26 2,314 -- -- 303,972 Total consumer 485,575 26 2,962 -- -- 488,563 Real estate: Construction 330,080 98 6,565 16 -- 336,759 Single family residential 875,603 4,024 24,460 158 -- 904,245 Other commercial 1,738,207 6,874 41,994 -- -- 1,787,075 Total real estate 2,943,890 10,996 73,019 174 -- 3,028,079 Commercial: Commercial 616,805 558 22,162 -- -- 639,525 Agricultural 148,218 104 2,033 -- 23 150,378 Total commercial 765,023 662 24,195 -- 23 789,903 Other 20,662 -- -- -- -- 20,662 Loans acquired 1,217,886 22,181 64,075 1,541 -- 1,305,683 Total $ 5,433,036 $ 33,865 $ 164,251 $ 1,715 $ 23 $ 5,632,890 Allowance for Loan Losses Allowance for Loan Losses 310 10, Receivables 450 20, Loss Contingencies 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 not The general allocation is calculated monthly based on management’s assessment of several factors such as ( 1 2 3 4 5 6 7 8 one four The following table details activity in the allowance for loan losses by portfolio segment for the three nine September 30, 2017. one not (In thousands) Commercial Real Credit Other Total Three Months Ended September 30, 2017 Balance, beginning of period (2) $ 8,105 $ 25,731 $ 3,754 $ 3,789 $ 41,379 Provision for loan losses (1) 2,310 2,150 761 241 5,462 Charge-offs (2,442 ) (896 ) (1,017 ) (819 ) (5,174 ) Recoveries 21 309 275 445 1,050 Net charge-offs (2,421 ) (587 ) (742 ) (374 ) (4,124 ) Balance, September 30, 2017 (2) $ 7,994 $ 27,294 $ 3,773 $ 3,656 $ 42,717 Nine Months Ended September 30, 2017 Balance, beginning of period (2) $ 7,739 $ 21,817 $ 3,779 $ 2,951 $ 36,286 Provision for loan losses (1) 3,255 7,984 2,168 1,920 15,327 Charge-offs (3,083 ) (3,264 ) (2,962 ) (2,986 ) (12,295 ) Recoveries 83 757 788 1,771 3,399 Net charge-offs (3,000 ) (2,507 ) (2,174 ) (1,215 ) (8,896 ) Balance, September 30, 2017 (2) $ 7,994 $ 27,294 $ 3,773 $ 3,656 $ 42,717 Period-end amount allocated to: Loans individually evaluated for impairment $ 3,996 $ 2,325 $ -- $ -- $ 6,321 Loans collectively evaluated for impairment 3,998 24,969 3,773 3,656 36,396 Balance, September 30, 2017 (2) $ 7,994 $ 27,294 $ 3,773 $ 3,656 $ 42,717 ______________________ ( 1 Provision for loan losses of $1,464,000 nine September 30, 2017 ( three nine September 30, 2017 $5,462,000 $16,792,000 $2.0 nine September 30, 2017 $391,000. ( 2 Allowance for loan losses at September 30, 2017 $391,000 not December 31, 2016 $954,000 September 30, 2017 June 30, 2017 $43,108,000 $41,770,000, Activity in the allowance for loan losses for the three nine September 30, 2016 (In thousands) Commercial Real Credit Other Total Three Months Ended September 30, 2016 Balance, beginning of period (4) $ 7,832 $ 19,635 $ 3,748 $ 2,308 $ 33,523 Provision for loan losses (3) 680 6,066 501 832 8,079 Charge-offs (284 ) (6,297 ) (699 ) (600 ) (7,880 ) Recoveries 12 55 199 106 372 Net charge-offs (272 ) (6,242 ) (500 ) (494 ) (7,508 ) Balance, September 30, 2016 (4) $ 8,240 $ 19,459 $ 3,749 $ 2,646 $ 34,094 Nine Months Ended September 30, 2016 Balance, beginning of period (4) $ 5,985 $ 19,522 $ 3,893 $ 1,951 $ 31,351 Provision for loan losses (3) 4,961 7,009 1,422 1,819 15,211 Charge-offs (3,043 ) (7,350 ) (2,260 ) (1,482 ) (14,135 ) Recoveries 337 278 694 358 1,667 Net charge-offs (2,706 ) (7,072 ) (1,566 ) (1,124 ) (12,468 ) Balance, September 30, 2016 (4) $ 8,240 $ 19,459 $ 3,749 $ 2,646 $ 34,094 Period-end amount allocated to: Loans individually evaluated for impairment $ 64 $ 515 $ -- $ 1 $ 580 Loans collectively evaluated for impairment 8,176 18,944 3,749 2,645 33,514 Balance, September 30, 2016 (4) $ 8,240 $ 19,459 $ 3,749 $ 2,646 $ 34,094 Period-end amount allocated to: Loans individually evaluated for impairment $ 262 $ 417 $ -- $ 1 $ 680 Loans collectively evaluated for impairment 7,477 21,400 3,779 2,950 35,606 Balance, December 31, 2016 (5) $ 7,739 $ 21,817 $ 3,779 $ 2,951 $ 36,286 ______________________ ( 3 Provision for loan losses of $215,000 $522,000 three nine September 30, 2016 ( three nine September 30, 2016 $8,294,000 $15,733,000 $215,000 $522,000 no ( 4 Allowance for loan losses at September 30, 2016, June 30, 2016 December 31, 2015 $954,000 September 30, 2016, June 30, 2016 December 31, 2015 $35,048,000, $34,477,000 $32,305,000, ( 5 Allowance for loan losses at December 31, 2016 $954,000 not December 31, 2016 $37,240,000. 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 September 30, 2017 Loans individually evaluated for impairment $ 13,976 $ 33,680 $ 273 $ 3,880 $ 51,809 Loans collectively evaluated for impairment 882,833 3,761,220 176,043 339,407 5,159,503 Balance, end of period $ 896,809 $ 3,794,900 $ 176,316 $ 343,287 $ 5,211,312 December 31, 2016 Loans individually evaluated for impairment $ 11,522 $ 30,001 $ 373 $ 1,800 $ 43,696 Loans collectively evaluated for impairment 778,381 2,998,078 184,218 322,834 4,283,511 Balance, end of period $ 789,903 $ 3,028,079 $ 184,591 $ 324,634 $ 4,327,207

Note 6 - Loans Acquired

Note 6 - Loans Acquired	9 Months Ended
	Sep. 30, 2017
Notes to Financial Statements
Loans Acquired [Text Block]	NOTE 6: During the second 2017, $249.3 $254.3 $5.0 2, 310 20, Nonrefundable Fees and Other Costs not $2.3 $3.3 $956,000 310 30, Loans and Debt Securities Acquired with Deteriorated Credit Quality not During the third 2016, $340.1 $348.8 $8.7 2, 310 20, Nonrefundable Fees and Other Costs not $757,000 $1.6 $848,000 310 30, Loans and Debt Securities Acquired with Deteriorated Credit Quality See Note 2, The following table reflects the carrying value of all loans acquired as of September 30, 2017 December 31, 2016: Loans Acquired (in thousands) September 30, December 31, Consumer: Other consumer $ 29,662 $ 49,677 Total consumer 29,662 49,677 Real estate: Construction 48,520 57,587 Single family residential 363,796 423,176 Other commercial 565,993 690,108 Total real estate 978,309 1,170,871 Commercial: Commercial 70,620 81,837 Agricultural 13,448 3,298 Total commercial 84,068 85,135 Total loans acquired (1) $ 1,092,039 $ 1,305,683 ______________________ ( 1 Loans acquired are reported net of a $391,000 $954,000 September 30, 2017 December 31, 2016, Nonaccrual loans acquired, excluding purchased credit impaired loans accounted for under ASC Topic 310 30, 5, (In thousands) September 30, December 31, Consumer: Other consumer $ 315 $ 456 Total consumer 315 456 Real estate: Construction 1,905 7,961 Single family residential 11,840 13,366 Other commercial 7,261 22,045 Total real estate 21,006 43,372 Commercial: Commercial 2,163 2,806 Agricultural 216 198 Total commercial 2,379 3,004 Total $ 23,700 $ 46,832 An age analysis of past due loans acquired segregated by class of loans, is as follows (see Note 5, (In thousands) Gross 90 Days Total Current Total 90 Days September 30, 2017 Consumer: Other consumer $ 401 $ 161 $ 562 $ 29,100 $ 29,662 $ 7 Total consumer 401 161 562 29,100 29,662 7 Real estate: Construction 19 1,420 1,439 47,081 48,520 -- Single family residential 4,785 3,127 7,912 355,884 363,796 -- Other commercial 806 2,670 3,476 562,517 565,993 -- Total real estate 5,610 7,217 12,827 965,482 978,309 -- Commercial: Commercial 156 1,788 1,944 68,676 70,620 -- Agricultural 16 42 58 13,390 13,448 -- Total commercial 172 1,830 2,002 82,066 84,068 -- Total $ 6,183 $ 9,208 $ 15,391 $ 1,076,648 $ 1,092,039 $ 7 December 31, 2016 Consumer: Other consumer $ 571 $ 189 $ 760 $ 48,917 $ 49,677 $ -- Total consumer 571 189 760 48,917 49,677 -- Real estate: Construction 132 7,332 7,464 50,123 57,587 -- Single family residential 8,358 4,857 13,215 409,961 423,176 11 Other commercial 2,836 10,741 13,577 676,531 690,108 -- Total real estate 11,326 22,930 34,256 1,136,615 1,170,871 11 Commercial: Commercial 723 2,153 2,876 78,961 81,837 -- Agricultural 48 -- 48 3,250 3,298 -- Total commercial 771 2,153 2,924 82,211 85,135 -- Total $ 12,668 $ 25,272 $ 37,940 $ 1,267,743 $ 1,305,683 $ 11 The following table presents a summary of loans acquired by credit risk rating, segregated by class of loans (see Note 5, 310 30 1 4 (In thousands) Risk Rate Risk Rate Risk Rate Risk Rate Risk Rate Total September 30, 2017 Consumer: Other consumer $ 28,982 $ -- $ 680 $ -- $ -- $ 29,662 Total consumer 28,982 -- 680 -- -- 29,662 Real estate: Construction 45,718 1,314 1,488 -- -- 48,520 Single family residential 347,821 1,534 13,825 615 -- 363,795 Other commercial 549,853 6,200 9,941 -- -- 565,994 Total real estate 943,392 9,048 25,254 615 -- 978,309 Commercial: Commercial 66,367 325 3,928 -- -- 70,620 Agricultural 13,148 300 -- -- -- 13,448 Total commercial 79,515 625 3,928 -- -- 84,068 Total $ 1,051,889 $ 9,673 $ 29,862 $ 615 $ -- $ 1,092,039 December 31, 2016 Consumer: Other consumer $ 48,992 $ 14 $ 671 $ -- $ -- $ 49,677 Total consumer 48,992 14 671 -- -- 49,677 Real estate: Construction 50,704 88 6,795 -- -- 57,587 Single family residential 400,553 2,696 18,392 1,535 -- 423,176 Other commercial 641,018 17,384 31,706 -- -- 690,108 Total real estate 1,092,275 20,168 56,893 1,535 -- 1,170,871 Commercial: Commercial 73,609 1,965 6,257 6 -- 81,837 Agricultural 3,010 34 254 -- -- 3,298 Total commercial 76,619 1,999 6,511 6 -- 85,135 Total $ 1,217,886 $ 22,181 $ 64,075 $ 1,541 $ -- $ 1,305,683 Loans acquired were individually evaluated and recorded at estimated fair value, including estimated credit losses, at the time of acquisition. These loans are systematically reviewed by the Company to determine the risk of losses that may The amount of the estimated cash flows expected to be received from the purchased credit impaired loans in excess of the fair values recorded for 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 purchased credit impaired loans, and adjustments may may not The impact of the adjustments on the Company’s financial results for the three nine September 30, 2017 2016 Three Months Ended Nine Months Ended (In thousands) 2017 2016 2017 2016 Impact on net interest income and pre-tax income $ 23 $ 65 $ 2,596 $ 1,240 Net impact, net of taxes $ 14 $ 40 $ 1,578 $ 754 These adjustments will be recognized over the remaining lives of the purchased credit impaired loans. The accretable yield adjustments recorded in future periods will change as the Company continues to evaluate expected cash flows from the purchased credit impaired loans. Changes in the carrying amount of the accretable yield for all purchased impaired loans were as follows for the three nine September 30, 2017 2016. Three Months Ended Nine Months Ended (In thousands) Accretable Carrying Accretable Carrying Beginning balance $ 766 $ 8,448 $ 1,655 $ 17,802 Additions -- -- -- 2,388 Accretable yield adjustments 52 -- 2,698 -- Accretion (408 ) 408 (3,943 ) 3,943 Payments and other reductions, net -- (980 ) -- (16,257 ) Balance, ending $ 410 $ 7,876 $ 410 $ 7,876 Three Months Ended Nine Months Ended (In thousands) Accretable Carrying Accretable Carrying Beginning balance $ 2,365 $ 20,663 $ 954 $ 23,469 Additions -- 1,614 -- 1,614 Accretable yield adjustments 171 -- 3,245 -- Accretion (555 ) 555 (2,218 ) 2,218 Payments and other reductions, net -- (1,412 ) -- (5,881 ) Balance, ending $ 1,981 $ 21,420 $ 1,981 $ 21,420 Purchased impaired loans are evaluated on an individual borrower basis. Because some loans evaluated by the Company were determined to have experienced impairment in the estimated credit quality or cash flows, the Company recorded a provision and established an allowance for loan losses for loans acquired resulting in a total allowance on loans acquired of $391,000 September 30, 2017 $954,000 December 31, 2016. no three September 30, 2017. nine September 30, 2017 $1.5 three nine September 30, 2016 $215,000 $522,000.

Note 7 - Goodwill and Other Int

Note 7 - Goodwill and Other Intangible Assets	9 Months Ended
	Sep. 30, 2017
Notes to Financial Statements
Goodwill and Intangible Assets Disclosure [Text Block]	NOTE 7: Goodwill is tested annually, or more often 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 $375.7 September 30, 2017 $348.5 December 31, 2016. The change in goodwill during 2017 $29.4 2017 not $4.1 nor nine September 30, 2017 December 31, 2016. Core deposit premiums are amortized over periods ranging from 10 15 $7.8 second 2017 $5.1 fourth 2016 Intangible assets are being amortized over various periods ranging from 10 15 $830,000 second 2017 $591,000 fourth 2016 $1.3 third 2017. The Company’s goodwill and other intangibles (carrying basis and accumulated amortization) at September 30, 2017 December 31, 2016, (In thousands) September 30, December 31, Goodwill $ 375,731 $ 348,505 Core deposit premiums: Gross carrying amount 56,532 48,692 Accumulated amortization (14,297 ) (10,625 ) Core deposit premiums, net 42,235 38,067 Purchased credit card relationships: Gross carrying amount 2,068 2,068 Accumulated amortization (1,654 ) (1,344 ) Purchased credit card relationships, net 414 724 Books of business intangible: Gross carrying amount 15,414 15,884 Accumulated amortization (2,562 ) (1,716 ) Books of business intangible, net 12,852 14,168 Other intangible assets, net 55,501 52,959 Total goodwill and other intangible assets $ 431,232 $ 401,464 The Company’s estimated remaining amortization expense on intangibles as of September 30, 2017 Year (In thousands) Remainder of 2017 $ 1,665 2018 6,557 2019 6,247 2020 6,234 2021 6,172 Thereafter 28,626 Total $ 55,501

Note 8 - Time Deposits

Note 8 - Time Deposits	9 Months Ended
	Sep. 30, 2017
Notes to Financial Statements
Deposit Liabilities Disclosures [Text Block]	NOTE 8: Time deposits include approximately $635,765,000 $600,280,000 $100,000 September 30, 2017, December 31, 2016, $255,168,000 $193,596,000 $250,000 September 30, 2017 December 31, 2016,

Note 9 - Income Taxes

Note 9 - Income Taxes	9 Months Ended
	Sep. 30, 2017
Notes to Financial Statements
Income Tax Disclosure [Text Block]	NOTE 9: The provision for income taxes is comprised of the following components: Three Months Ended Nine Months Ended (In thousands) 2017 2016 2017 2016 Income taxes currently payable $ 11,946 $ 10,327 $ 30,467 $ 33,139 Deferred income taxes 2,732 455 4,962 1,070 Provision for income taxes $ 14,678 $ 10,782 $ 35,429 $ 34,209 The tax effects of temporary differences related to deferred taxes shown on the balance sheets were: (In thousands) September 30, December 31, Deferred tax assets: Loans acquired $ 5,900 $ 7,986 Allowance for loan losses 16,841 14,754 Valuation of foreclosed assets 4,020 3,958 Tax NOLs from acquisition 12,642 13,077 Deferred compensation payable 2,983 2,785 Vacation compensation 1,828 1,740 Accrued equity and other compensation 5,138 6,367 Acquired securities 1,201 1,098 Other accrued liabilities 2,301 1,834 Unrealized loss on available-for-sale securities 6,708 9,559 Other 4,610 5,267 Gross deferred tax assets 64,172 68,425 Deferred tax liabilities: Goodwill and other intangible amortization (32,189 ) (29,601 ) Accumulated depreciation (6,403 ) (5,370 ) Other (7,369 ) (5,877 ) Gross deferred tax liabilities (45,961 ) (40,848 ) Net deferred tax asset, included in other assets $ 18,211 $ 27,577 A reconciliation of income tax expense at the statutory rate to the Company's actual income tax expense for the three nine September 30 Three Months Ended Nine Months Ended (In thousands) 2017 2016 2017 2016 Computed at the statutory rate (35%) $ 15,235 $ 11,974 $ 38,313 $ 36,418 Increase (decrease) in taxes resulting from: State income taxes, net of federal tax benefit 342 21 1,117 1,390 Discrete items related to ASU 2016-09 5 -- (1,372 ) -- Tax exempt interest income (955 ) (1,072 ) (3,160 ) (3,120 ) Tax exempt earnings on BOLI (178 ) (146 ) (616 ) (665 ) Merger related expenses 187 131 559 131 Federal tax credits (397 ) (890 ) (1,190 ) (943 ) Other differences, net 439 764 1,778 998 Actual tax provision $ 14,678 $ 10,782 $ 35,429 $ 34,209 The Company follows ASC Topic 740, Income Taxes not not fifty not first no not first no 740 The amount of unrecognized tax benefits may Section 382 382 $36.5 382 2028 2035. 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 2014 2014

Note 10 - Securities Sold Under

Note 10 - Securities Sold Under Agreements to Repurchase	9 Months Ended
	Sep. 30, 2017
Notes to Financial Statements
Repurchase Agreements, Resale Agreements, Securities Borrowed, and Securities Loaned Disclosure [Text Block]	NOTE 10: We utilize securities sold under agreements to repurchase to facilitate the needs of our customers and to facilitate secured short-term funding needs. Securities sold under agreements to repurchase are stated at the amount of cash received in connection with the transaction. We monitor collateral levels on a continuous basis. We may The gross amount of recognized liabilities for repurchase agreements was $121.4 $102.4 September 30, 2017 December 31, 2016, September 30, 2017 December 31, 2016 Remaining Contractual Maturity of the Agreements (In thousands) Overnight and Up to 30 30-90 Days Greater than Total September 30, 2017 Repurchase agreements: U.S. Government agencies $ 121,352 $ -- $ -- $ -- $ 121,352 December 31, 2016 Repurchase agreements: U.S. Government agencies $ 101,647 $ -- $ -- $ 757 $ 102,404

Note 11 - Other Borrowings and

Note 11 - Other Borrowings and Subordinated Debentures	9 Months Ended
	Sep. 30, 2017
Notes to Financial Statements
Debt Disclosure [Text Block]	NOTE 11: Debt at September 30, 2017 December 31, 2016 (In thousands) September 30, December 31, Other Borrowings FHLB advances, net of discount, due 2017 to 2033, 1.15% to 7.37% secured by residential real estate loans $ 477,982 $ 225,230 Notes payable, due 10/15/2020, 3.85%, fixed rate, unsecured 44,559 47,929 Total other borrowings 522,541 273,159 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, net of discount, due 6/30/2035, floating rate of 1.75% above the three month LIBOR rate, reset quarterly, callable without penalty 9,301 9,225 Trust preferred securities, net of discount, due 9/15/2037, floating rate of 1.37% above the three month LIBOR rate, reset quarterly 10,246 10,130 Trust preferred securities, net of discount, due 12/3/2033, floating rate of 2.88% above the three month LIBOR rate, reset quarterly, callable without penalty 5,157 5,161 Trust preferred securities, net of discount, due 12/13/2034, floating rate of 2.00% above the three month LIBOR rate, reset quarterly, callable without penalty 5,137 5,105 Trust preferred securities, net of discount, due 6/6/2037, floating rate of 1.57% above the three month LIBOR rate, reset quarterly, callable without penalty 10,255 10,156 Trust preferred securities, net of discount, due 12/15/2035, floating rate of 1.45% above the three month LIBOR rate, reset quarterly, callable without penalty 6,702 -- Total subordinated debentures 67,418 60,397 Total other borrowings and subordinated debentures $ 589,959 $ 333,556 The Company had $442.0 one September 30, 2017 $180.0 December 31, 2016. The Company had total FHLB advances of $478.0 September 30, 2017, $1.075 $2.014 September 30, 2017. The trust preferred securities are tax-advantaged issues that qualify for Tier 1 Aggregate annual maturities of long-term debt at September 30, 2017, Year (In thousands) 2017 $ 1,851 2018 23,863 2019 7,586 2020 36,343 2021 2,251 Thereafter 76,065 Total $ 147,959

Note 12 - Contingent Liabilitie

Note 12 - Contingent Liabilities	9 Months Ended
	Sep. 30, 2017
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	NOTE 12: The Company and/or its subsidiaries have various unrelated legal proceedings, which, in the aggregate, are not

Note 13 - Common Stock

Note 13 - Common Stock	9 Months Ended
	Sep. 30, 2017
Notes to Financial Statements
Capital Stock Disclosure [Text Block]	NOTE 13: On July 23, 2012, 850,000 5% no may not

Note 14 - Undivided Profits

Note 14 - Undivided Profits	9 Months Ended
	Sep. 30, 2017
Notes to Financial Statements
Restrictions on Dividends, Loans and Advances [Text Block]	NOTE 14: The Company’s subsidiary bank is 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 Commissioner of the Arkansas State Bank Department is required if the total of all dividends declared by an Arkansas state bank in any calendar year exceeds seventy-five 75% seventy-five 75% September 30, 2017, $1.8 The risk-based capital guidelines of the Federal Reserve Board and the Arkansas State Bank Department include the definitions for ( 1 2 3 January 1, 2015, 5% 8% 1 10% 6.50% 1 CET1 The Company and Bank must hold a capital conservation buffer composed of CET1 January 1, 2016, 0.625% four January 1 2.5% January 1, 2019). September 30, 2017, CET1 11.97% September 30, 2017.

Note 15 - Stock Based Compensat

Note 15 - Stock Based Compensation	9 Months Ended
	Sep. 30, 2017
Notes to Financial Statements
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]	NOTE 15: 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 nine September 30, 2017: Stock Options Stock Awards Stock Units Number Weighted Number Weighted Number Weighted Balance, January 1, 2017 473 $ 42.85 139 $ 40.96 113 $ 45.40 Granted -- -- -- -- 185 58.18 Stock Options Exercised (39 ) 32.16 -- -- -- -- Stock Awards/Units Vested -- -- (34 ) 36.45 (124 ) 52.71 Forfeited/Expired (3 ) 44.68 (12 ) 43.83 (13 ) 51.72 Balance, September 30, 2017 431 $ 43.82 93 $ 42.21 161 $ 53.97 Exercisable, September 30, 2017 325 $ 43.23 The following table summarizes information about stock options under the plans outstanding at September 30, 2017: Options Outstanding Options Exercisable Range of Exercise Prices Number of Shares Weighted Average Remaining Contractual Life (Years) Weighted Average Exercise Price Number of Shares Weighted Average Exercise Price $17.55 - $21.13 3,950 2.76 $ 19.38 3,950 $ 19.38 21.29 - 21.29 3,700 5.30 21.29 2,500 21.29 21.51 - 21.51 1,250 2.30 21.51 1,250 21.51 30.31 - 30.31 22,180 0.63 30.31 22,180 30.31 40.57 - 40.57 40,490 7.25 40.57 40,490 40.57 40.72 - 40.72 1,500 7.13 40.72 600 40.72 44.40 - 44.40 49,870 7.25 44.40 37,144 44.40 45.50 - 45.50 246,485 7.62 45.50 193,025 45.50 47.02 - 47.02 58,090 7.79 47.02 20,838 47.02 48.13 - 48.13 3,305 7.96 48.13 2,645 48.13 $17.55 - $48.13 430,820 7.12 $ 43.82 324,622 $ 43.23 Total stock-based compensation expense was $6,486,000 $4,204,000 nine September 30, 2017 2016, $407,000 September 30, 2017. $15,423,000 September 30, 2017. 2.0 The intrinsic value of stock options outstanding and stock options exercisable at September 30, 2017 $6,066,000 $4,761,000. $57.90 September 30, 2017, nine September 30, 2017 September 30, 2016, $1,012,000 $1,063,000, The fair value of the Company’s employee stock options granted is estimated on the date of grant using the Black-Scholes option-pricing model. This model requires the input of highly subjective assumptions, changes to which can materially affect the fair value estimate. There were no nine September 30, 2017. nine September 30, 2016 $11.64 Nine Months Ended Expected dividend yield 1.96 % Expected stock price volatility 27.34 % Risk-free interest rate 2.01 % Expected life of options (in years) 7

Note 16 - Additional Cash Flow

Note 16 - Additional Cash Flow Information	9 Months Ended
	Sep. 30, 2017
Notes to Financial Statements
Cash Flow, Supplemental Disclosures [Text Block]	NOTE 16: The following is a summary of the Company’s additional cash flow information during the nine Nine Months Ended (In thousands) 2017 2016 Interest paid $ 21,531 $ 16,311 Income taxes paid 21,718 32,069 Transfers of loans to foreclosed assets and other real estate owned 5,311 3,846 Transfers of premises to foreclosed assets and other real estate owned 3,188 -- Transfers of premises and equipment to premises held for sale -- 7,200 Transfers of premises held for sale to foreclosed assets and other real estate owned -- 652

Note 17 - Other Operating Expen

Note 17 - Other Operating Expenses	9 Months Ended
	Sep. 30, 2017
Notes to Financial Statements
Other Income and Other Expense Disclosure [Text Block]	NOTE 17: Other operating expenses consist of the following: Three Months Ended Nine Months Ended (In thousands) 2017 2016 2017 2016 Professional services $ 3,946 $ 3,282 $ 13,079 $ 9,678 Postage 1,091 1,150 3,427 3,458 Telephone 943 912 3,003 3,014 Credit card expense 3,137 2,947 9,081 8,319 Marketing 1,219 1,525 4,253 4,647 Operating supplies 592 457 1,406 1,273 Amortization of intangibles 1,724 1,503 4,828 4,411 Branch right sizing expense 153 218 370 3,451 Other expense 5,458 5,185 18,588 14,851 Total other operating expenses $ 18,263 $ 17,179 $ 58,035 $ 53,102

Note 18 - Certain Transactions

Note 18 - Certain Transactions	9 Months Ended
	Sep. 30, 2017
Notes to Financial Statements
Related Party Transactions Disclosure [Text Block]	NOTE 18: 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 bank, 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 not

Note 19 - Commitments and Credi

Note 19 - Commitments and Credit Risk	9 Months Ended
	Sep. 30, 2017
Notes to Financial Statements
Commitments Disclosure [Text Block]	NOTE 19: The Company grants agri-business, commercial and residential loans to customers throughout Arkansas, Kansas, Missouri and Tennessee, 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 may may not may At September 30, 2017, $568,655,000 $1,628,358,000 December 31, 2016, $562,527,000 $1,220,137,000 Standby letters of credit are conditional commitments issued by the Company, to guarantee the performance of a customer to a third $29,812,000 $29,362,000 September 30, 2017, December 31, 2016, 9 15 September 30, 2017 December 31, 2016, no

Note 20 - Preferred Stock

Note 20 - Preferred Stock	9 Months Ended
	Sep. 30, 2017
Notes to Financial Statements
Preferred Stock [Text Block]	NOTE 20: On February 27, 2015, 30,852 1 1% February 18, 2016, 9%. January 29, 2016,

Note 21 - Fair Value Measuremen

Note 21 - Fair Value Measurements	9 Months Ended
	Sep. 30, 2017
Notes to Financial Statements
Fair Value Disclosures [Text Block]	NOTE 21: ASC Topic 820, Fair Value Measurements ASC Topic 820 820 three may · Level 1 · Level 2 1 not · Level 3 no In general, fair value is based upon quoted market prices, where available. If such quoted market prices are not may may may may not not may 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. Available-for-sale securities 1 1 2 may 820, 2 third 16 1 2 not 3 1 2 Assets held in trading accounts 2 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 September 30, 2017 December 31, 2016. Fair Value Measurements Using (In thousands) Fair Value Quoted Prices in Significant Other Significant September 30, 2017 ASSETS Available-for-sale securities U.S. Government agencies $ 208,220 $ -- $ 208,220 $ -- Mortgage-backed securities 959,698 -- 959,698 -- State and political subdivisions 84,822 -- 84,822 -- Other securities 64,680 -- 64,680 -- Assets held in trading accounts 49 -- 49 -- December 31, 2016 ASSETS Available-for-sale securities U.S. Treasury $ 300 $ 300 $ -- $ -- U.S. Government agencies 137,771 -- 137,771 -- Mortgage-backed securities 868,324 -- 868,324 -- States and political subdivisions 102,943 -- 102,943 -- Other securities 48,016 -- 48,016 -- Assets held in trading accounts 41 -- 41 -- Certain financial assets and liabilities are measured at fair value on a nonrecurring basis; that is, the instruments are not Impaired loans (collateral dependent) not 3 Appraisals are updated at renewal, if not $1.5 one two may 1 3 310 Foreclosed assets and other real estate owned 3 September 30, 2017 December 31, 2016, $31.5 $26.9 The significant unobservable inputs (Level 3 may 3 10% 40% Mortgage loans held for sale not may 2 3 3. September 30, 2017 December 31, 2016, no 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 September 30, 2017 December 31, 2016. Fair Value Measurements Using (In thousands) Fair Value Quoted Prices in Significant Other Significant September 30, 2017 ASSETS Impaired loans (1) (2) $ 11,229 $ -- $ -- $ 11,229 Foreclosed assets and other real estate owned (1) 19,506 -- -- 19,506 December 31, 2016 ASSETS Impaired loans (1) (2) $ 17,154 $ -- $ -- $ 17,154 Foreclosed assets and other real estate owned (1) 17,806 -- -- 17,806 ________________________ ( 1 These amounts represent the resulting carrying amounts on the Consolidated Balance Sheets for impaired collateral dependent loans and foreclosed assets and other real estate owned for which fair value re-measurements took place during the period. ( 2 Specific allocations of $2,195,000 $2,384,000 September 30, 2017 December 31, 2016, ASC Topic 825, Financial Instruments not not Cash and cash equivalents 1 Interest bearing balances due from banks 2 Held-to-maturity securities 1 not may 2 1 2 not 3 Loans 3 Loans acquired 3 Deposits 2 3 Federal Funds purchased, securities sold under agreement to repurchase and short-term debt 2 Other borrowings 2 Subordinated debentures 2 Accrued interest receivable/payable 2 Commitments to extend credit, letters of credit and lines of credit 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 not may not 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 September 30, 2017 Financial assets: Cash and cash equivalents $ 432,290 $ 432,290 $ -- $ -- $ 432,290 Interest bearing balances due from banks - time 4,059 -- 4,059 -- 4,059 Held-to-maturity securities 406,033 -- 412,140 -- 412,140 Mortgage loans held for sale 12,614 -- -- 12,614 12,614 Interest receivable 30,749 -- 30,749 -- 30,749 Legacy loans (net of allowance) 5,168,595 -- -- 5,140,768 5,140,768 Loans acquired (net of allowance) 1,092,039 -- -- 1,086,160 1,086,160 Financial liabilities: Non-interest bearing transaction accounts 1,669,860 -- 1,669,860 -- 1,669,860 Interest bearing transaction accounts and savings deposits 4,344,779 -- 4,344,779 -- 4,344,779 Time deposits 1,310,951 -- -- 1,301,451 1,301,451 Federal funds purchased and securities sold under agreements to repurchase 121,687 -- 121,687 -- 121,687 Other borrowings 522,541 -- 526,266 -- 526,266 Subordinated debentures 67,418 -- 62,142 -- 62,142 Interest payable 2,043 -- 2,043 -- 2,043 December 31, 2016 Financial assets: Cash and cash equivalents $ 285,659 $ 285,659 $ -- $ -- $ 285,659 Interest bearing balances due from banks - time 4,563 -- 4,563 -- 4,563 Held-to-maturity securities 462,096 -- 465,960 -- 465,960 Mortgage loans held for sale 27,788 -- -- 27,788 27,788 Interest receivable 27,788 -- 27,788 -- 27,788 Legacy loans (net of allowance) 4,290,921 -- -- 4,305,165 4,305,165 Loans acquired (net of allowance) 1,305,683 -- -- 1,310,017 1,310,017 Financial liabilities: Non-interest bearing transaction accounts 1,491,676 -- 1,491,676 -- 1,491,676 Interest bearing transaction accounts and savings deposits 3,956,483 -- 3,956,483 -- 3,956,483 Time deposits 1,287,060 -- -- 1,278,339 1,278,339 Federal funds purchased and securities sold under agreements to repurchase 115,029 -- 115,029 -- 115,029 Other borrowings 273,159 -- 292,367 -- 292,367 Subordinated debentures 60,397 -- 55,318 -- 55,318 Interest payable 1,668 -- 1,668 -- 1,668 The fair value of commitments to extend credit, letters of credit and lines of credit is not

Note 22 - Subsequent Events

Note 22 - Subsequent Events	9 Months Ended
	Sep. 30, 2017
Notes to Financial Statements
Subsequent Events [Text Block]	NOTE 22: On October 19, 2017, December 14, 2016 January 23, 2017, September 12, 2017. three $14.7 $10.5 $11.2 In the OKSB Merger, each outstanding share of OKSB common stock was cancelled and converted into the right to receive 0.3903 $5.11 7,250,000 $95,000,000 0.8263 $6.60 6,500,000 $70,000,000 $76.7 October 18, 2017 October 19, 2017. Due to the timing of the mergers and the number of assets and liabilities assumed, the Company is continuing to determine their preliminary fair values and the purchase price allocation. The Company expects to finalize the analysis of the acquired assets and liabilities over the next few months and within one On October 6, 2017, may $75 The principal amounts borrowed under the Credit Agreement will bear interest at a variable rate equal to the applicable one 1.50%. 360 October 5, 2018,

Significant Accounting Policies

Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2017
Accounting Policies [Abstract]
New Accounting Pronouncements, Policy [Policy Text Block]	Recently Adopted Accounting Standards Premium Amortization on Purchased Callable Debt Securities March 2017, No. 2017 08, Receivables – Nonrefundable Fees and Other Costs (Topic 310 20 2017 08” not December 15, 2018, 2017 08 first 2017. not Employee Share-Based Payments March 2016, No. 2016 09, Compensation – Stock Compensation (Topic 718 2016 09” no 2016 09 2016 09 2016 09 December 15, 2016. not $22,000 $1.5 three nine September 30, 2017, Recently Issued Accounting Standards Derivatives and Hedging: Targeted Improvements August 2017, No. 2017 12, Derivatives and Hedging (Topic 815 2017 12” 1 2 3 4 5 December 15, 2018, not Stock Compensation: Scope of Modification Accounting May 2017, No. 2017 09, Compensation – Stock Compensation (Topic 718 2017 09” 1 2 718, may 2017 09 December 15, 2017, 2017 09 not Goodwill Impairment January 2017, No. 2017 04, Intangibles – Goodwill and Other (Topic 350 2017 04” 2 not December 15, 2019, 2017. 2017 04 not Statement of Cash Flows August 2016, No. 2016 15, Statement of Cash Flows (Topic 230 2016 15” December 15, 2017, may no not Credit Losses on Financial Instruments June 2016, No. 2016 13, Financial Instruments – Credit Losses (Topic 326 2016 13” 2016 13 December 15, 2019, one first one Leases February 2016, No. 2016 02, Leases (Topic 842 2016 02” December 15, 2018, September 30, 2017, not Financial Assets and Financial Liabilities January 2016, No. 2016 01, Financial Instruments – Overall (Subtopic 825 10 2016 01” December 15, 2017, 2016 01 not not Revenue Recognition – In May 2014, No. 2014 09, Revenue from Contracts with Customers (Topic 606 2014 09” July 2015, No. 2015 14, December 15, 2017. not not 2015 14, not not not There have been no 2016 10 not
Business Combinations Policy [Policy Text Block]	Acquisition Accounting, Loans Acquired The Company accounts for its acquisitions under ASC Topic 805, Business Combinations No 820. The Company evaluates loans acquired, other than purchased impaired loans, in accordance with the provisions of ASC Topic 310 20, Nonrefundable Fees and Other Costs 310 30, Loans and Debt Securities Acquired with Deteriorated Credit Quality not For impaired loans accounted for under ASC Topic 310 30, For further discussion of our acquisition and loan accounting, see Note 2, 6,
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 EPS for the three nine September 30, 2017 2016: Three Months Ended Nine Months Ended (In thousands, except per share data) 2017 2016 2017 2016 Net income available to common shareholders $ 28,852 $ 23,429 $ 74,037 $ 69,819 Average common shares outstanding 32,214 30,621 31,797 30,434 Average potential dilutive common shares 210 223 210 223 Average diluted common shares 32,424 30,844 32,007 30,657 Basic earnings per share $ 0.90 $ 0.77 $ 2.33 $ 2.29 Diluted earnings per share (1) $ 0.89 $ 0.76 $ 2.31 $ 2.28 ________________________________ ( 1 Stock options to purchase 3,305 61,395 three nine September 30, 2016 not no three nine September 30, 2017.

Note 1 - Basis of Presentation

Note 1 - Basis of Presentation (Tables)	9 Months Ended
	Sep. 30, 2017
Notes Tables
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	Three Months Ended Nine Months Ended (In thousands, except per share data) 2017 2016 2017 2016 Net income available to common shareholders $ 28,852 $ 23,429 $ 74,037 $ 69,819 Average common shares outstanding 32,214 30,621 31,797 30,434 Average potential dilutive common shares 210 223 210 223 Average diluted common shares 32,424 30,844 32,007 30,657 Basic earnings per share $ 0.90 $ 0.77 $ 2.33 $ 2.29 Diluted earnings per share (1) $ 0.89 $ 0.76 $ 2.31 $ 2.28

Note 2 - Acquisitions (Tables)

Note 2 - Acquisitions (Tables)	9 Months Ended
	Sep. 30, 2017
Notes Tables
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]	(In thousands) Acquired from Fair Value Fair Assets Acquired Cash and due from banks $ 8,001 $ -- $ 8,001 Interest bearing balances due from banks - time 1,984 -- 1,984 Investment securities 170,654 (316 ) 170,338 Loans acquired 257,641 (5,992 ) 251,649 Allowance for loan losses (2,382 ) 2,382 -- Foreclosed assets 1,083 (452 ) 631 Premises and equipment 9,905 1,258 11,163 Bank owned life insurance 7,819 -- 7,819 Goodwill 11,485 (11,485 ) -- Core deposit intangible -- 7,840 7,840 Other intangibles -- 830 830 Other assets 2,639 (1 ) 2,638 Total assets acquired $ 468,829 $ (5,936 ) $ 462,893 Liabilities Assumed Deposits: Non-interest bearing transaction accounts $ 76,555 $ -- $ 76,555 Interest bearing transaction accounts and savings deposits 214,872 -- 214,872 Time deposits 97,917 (368 ) 97,549 Total deposits 389,344 (368 ) 388,976 Securities sold under agreement to repurchase 17,163 -- 17,163 Other borrowings 3,000 -- 3,000 Subordinated debentures 6,702 -- 6,702 Accrued interest and other liabilities 1,891 1,924 3,815 Total liabilities assumed 418,100 1,556 419,656 Equity 50,729 (50,729 ) -- Total equity assumed 50,729 (50,729 ) -- Total liabilities and equity assumed $ 468,829 $ (49,173 ) $ 419,656 Net assets acquired 43,237 Purchase price 72,639 Goodwill $ 29,402 (In thousands) Acquired from Fair Value Fair Assets Acquired Cash and due from banks $ 131,467 $ (351 ) $ 131,116 Federal funds sold 10,000 -- 10,000 Investment securities 61,987 1 61,988 Loans acquired 350,361 (9,511 ) 340,850 Allowance for loan losses (4,313 ) 4,313 -- Foreclosed assets 4,960 (1,518 ) 3,442 Premises and equipment 6,746 1,339 8,085 Bank owned life insurance 6,632 -- 6,632 Core deposit intangible -- 5,075 5,075 Other intangibles -- 591 591 Other assets 17,364 6 17,370 Total assets acquired $ 585,204 $ (55 ) $ 585,149 Liabilities Assumed Deposits: Non-interest bearing transaction accounts $ 109,281 $ -- $ 109,281 Interest bearing transaction accounts and savings deposits 204,912 -- 204,912 Time deposits 195,664 -- 195,664 Total deposits 509,857 -- 509,857 Securities sold under agreement to repurchase 13,233 -- 13,233 FHLB borrowings 4,000 47 4,047 Accrued interest and other liabilities 3,558 1,530 5,088 Total liabilities assumed 530,648 1,577 532,225 Equity 54,556 (54,556 ) -- Total equity assumed 54,556 (54,556 ) -- Total liabilities and equity assumed $ 585,204 $ (52,979 ) $ 532,225 Net assets acquired 52,924 Purchase price 76,300 Goodwill $ 23,376

Note 3 - Investment Securities

Note 3 - Investment Securities (Tables)	9 Months Ended
	Sep. 30, 2017
Notes Tables
Investment [Table Text Block]	September 30, 2017 December 31, 2016 (In thousands) Amortized Gross Gross Unrealized Estimated Amortized Gross Gross Unrealized Estimated Held-to-Maturity U.S. Government agencies $ 66,928 $ 40 $ (140 ) $ 66,828 $ 76,875 $ 107 $ (182 ) $ 76,800 Mortgage-backed securities 16,972 56 (191 ) 16,837 19,773 63 (249 ) 19,587 State and political subdivisions 320,116 6,397 (55 ) 326,458 362,532 4,967 (842 ) 366,657 Other securities 2,017 -- -- 2,017 2,916 -- -- 2,916 Total HTM $ 406,033 $ 6,493 $ (386 ) $ 412,140 $ 462,096 $ 5,137 $ (1,273 ) $ 465,960 Available-for-Sale U.S. Treasury $ -- $ -- $ -- $ -- $ 300 $ -- $ -- $ 300 U.S. Government agencies 210,004 273 (2,057 ) 208,220 140,005 67 (2,301 ) 137,771 Mortgage-backed securities 973,111 120 (13,533 ) 959,698 885,783 178 (17,637 ) 868,324 State and political subdivisions 87,405 161 (2,744 ) 84,822 108,374 38 (5,469 ) 102,943 Other securities 63,295 1,385 -- 64,680 47,022 996 (2 ) 48,016 Total AFS $ 1,333,815 $ 1,939 $ (18,334 ) $ 1,317,420 $ 1,181,484 $ 1,279 $ (25,409 ) $ 1,157,354
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 Held-to-Maturity U.S. Government agencies $ 12,947 $ (53 ) $ 39,913 $ (87 ) $ 52,860 $ (140 ) Mortgage-backed securities 4,094 (42 ) 6,687 (149 ) 10,781 (191 ) State and political subdivisions 11,300 (41 ) 2,634 (14 ) 13,934 (55 ) Total HTM $ 28,341 $ (136 ) $ 49,234 $ (250 ) $ 77,575 $ (386 ) Available-for-Sale U.S. Government agencies $ 66,254 $ (750 ) $ 82,211 $ (1,307 ) $ 148,465 $ (2,057 ) Mortgage-backed securities 626,560 (7,458 ) 273,883 (6,075 ) 900,443 (13,533 ) State and political subdivisions 1,813 (32 ) 76,781 (2,712 ) 78,594 (2,744 ) Other securities -- -- 100 -- 100 -- Total AFS $ 694,627 $ (8,240 ) $ 432,975 $ (10,094 ) $ 1,127,602 $ (18,334 )
Investment Income [Table Text Block]	Three Months Ended Nine Months Ended (In thousands) 2017 2016 2017 2016 Taxable: Held-to-maturity $ 625 $ 771 $ 1,922 $ 3,094 Available-for-sale 5,949 4,005 18,003 12,931 Non-taxable: Held-to-maturity 2,135 2,617 6,635 8,162 Available-for-sale 509 381 2,099 592 Total $ 9,218 $ 7,774 $ 28,659 $ 24,779
Investments Classified by Contractual Maturity Date [Table Text Block]	Held-to-Maturity Available-for-Sale (In thousands) Amortized Fair Amortized Fair One year or less $ 50,829 $ 50,838 $ 21,211 $ 21,145 After one through five years 105,323 105,823 81,147 80,388 After five through ten years 99,399 100,902 14,532 14,427 After ten years 133,510 137,740 181,619 178,182 Securities not due on a single maturity date 16,972 16,837 973,111 959,698 Other securities (no maturity) -- -- 62,195 63,580 Total $ 406,033 $ 412,140 $ 1,333,815 $ 1,317,420

Note 5 - Loans and Allowance 35

Note 5 - Loans and Allowance for Loan Losses (Tables)	9 Months Ended
	Sep. 30, 2017
Notes Tables
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]	(In thousands) September 30, December 31, Consumer: Credit cards $ 176,316 $ 184,591 Other consumer 317,946 303,972 Total consumer 494,262 488,563 Real Estate: Construction 515,274 336,759 Single family residential 1,048,403 904,245 Other commercial 2,231,223 1,787,075 Total real estate 3,794,900 3,028,079 Commercial: Commercial 688,960 639,525 Agricultural 207,849 150,378 Total commercial 896,809 789,903 Other 25,341 20,662 Loans 5,211,312 4,327,207 Loans acquired, net of discount and allowance (1) 1,092,039 1,305,683 Total loans $ 6,303,351 $ 5,632,890
Schedule of Financing Receivables, Non Accrual Status [Table Text Block]	(In thousands) September 30, December 31, Consumer: Credit cards $ 273 $ 373 Other consumer 3,880 1,793 Total consumer 4,153 2,166 Real estate: Construction 2,403 3,411 Single family residential 13,034 12,139 Other commercial 18,811 12,385 Total real estate 34,248 27,935 Commercial: Commercial 13,827 7,765 Agricultural 2,210 1,238 Total commercial 16,037 9,003 Total $ 54,438 $ 39,104
Past Due Financing Receivables [Table Text Block]	(In thousands) Gross 90 Days Total Current Total 90 Days September 30, 2017 Consumer: Credit cards $ 655 $ 492 $ 1,147 $ 175,169 $ 176,316 $ 218 Other consumer 4,870 2,570 7,440 310,506 317,946 4 Total consumer 5,525 3,062 8,587 485,675 494,262 222 Real estate: Construction 440 1,478 1,918 513,356 515,274 -- Single family residential 5,516 4,785 10,301 1,038,102 1,048,403 -- Other commercial 3,032 8,945 11,977 2,219,246 2,231,223 -- Total real estate 8,988 15,208 24,196 3,770,704 3,794,900 -- Commercial: Commercial 991 10,745 11,736 677,224 688,960 10 Agricultural 469 1,793 2,262 205,587 207,849 -- Total commercial 1,460 12,538 13,998 882,811 896,809 10 Other -- -- -- 25,341 25,341 -- Total $ 15,973 $ 30,808 $ 46,781 $ 5,164,531 $ 5,211,312 $ 232 December 31, 2016 Consumer: Credit cards $ 716 $ 275 $ 991 $ 183,600 $ 184,591 $ 275 Other consumer 3,786 1,027 4,813 299,159 303,972 11 Total consumer 4,502 1,302 5,804 482,759 488,563 286 Real estate: Construction 1,420 1,246 2,666 334,093 336,759 -- Single family residential 6,310 5,927 12,237 892,008 904,245 14 Other commercial 4,212 6,722 10,934 1,776,141 1,787,075 -- Total real estate 11,942 13,895 25,837 3,002,242 3,028,079 14 Commercial: Commercial 2,040 5,296 7,336 632,189 639,525 -- Agricultural 121 1,215 1,336 149,042 150,378 -- Total commercial 2,161 6,511 8,672 781,231 789,903 -- Other -- -- -- 20,662 20,662 -- Total $ 18,605 $ 21,708 $ 40,313 $ 4,286,894 $ 4,327,207 $ 300
Impaired Financing Receivables [Table Text Block]	(In thousands) Unpaid Recorded Investment Recorded Total Related Average Interest Average Investment in Interest September 30, 2017 Three Months Ended Nine Months Ended Consumer: Credit cards $ 273 $ 273 $ -- $ 273 $ -- $ 283 $ 12 $ 292 $ 23 Other consumer 4,022 3,880 -- 3,880 -- 3,314 23 2,711 53 Total consumer 4,295 4,153 -- 4,153 -- 3,597 35 3,003 76 Real estate: Construction 2,652 1,496 907 2,403 220 2,582 17 2,828 56 Single family residential 13,782 12,450 584 13,034 53 12,878 85 12,772 251 Other commercial 19,065 7,260 10,983 18,243 2,052 19,306 121 19,313 380 Total real estate 35,499 21,206 12,474 33,680 2,325 34,766 223 34,913 687 Commercial: Commercial 13,774 4,805 8,112 12,917 3,996 14,543 84 12,943 255 Agricultural 2,184 1,059 -- 1,059 -- 1,562 8 1,645 32 Total commercial 15,958 5,864 8,112 13,976 3,996 16,105 92 14,588 287 Total $ 55,752 $ 31,223 $ 20,586 $ 51,809 $ 6,321 $ 54,468 $ 350 $ 52,504 $ 1,050 December 31, 2016 Three Months Ended Nine Months Ended Consumer: Credit cards $ 373 $ 373 $ -- $ 373 $ -- $ 439 $ -- $ 340 $ 10 Other consumer 1,836 1,797 3 1,800 1 1,324 14 882 32 Total consumer 2,209 2,170 3 2,173 1 1,763 14 1,222 42 Real estate: Construction 4,275 1,038 2,374 3,412 156 4,474 44 4,692 170 Single family residential 12,970 10,630 1,753 12,383 162 10,897 119 8,762 317 Other commercial 20,993 6,891 7,315 14,206 99 18,981 178 15,113 547 Total real estate 38,238 18,559 11,442 30,001 417 34,352 341 28,567 1,034 Commercial: Commercial 11,848 2,734 7,573 10,307 262 4,402 59 3,256 118 Agricultural 2,226 1,215 -- 1,215 -- 1,604 16 1,003 36 Total commercial 14,074 3,949 7,573 11,522 262 6,006 75 4,259 154 Total $ 54,521 $ 24,678 $ 19,018 $ 43,696 $ 680 $ 42,121 $ 430 $ 34,048 $ 1,230
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 September 30, 2017 Real estate: Construction -- $ -- 1 $ 432 1 $ 432 Single-family residential 4 144 14 838 18 982 Other commercial 5 6,877 3 6,152 8 13,029 Total real estate 9 7,021 18 7,422 27 14,443 Commercial: Commercial 7 2,191 6 749 13 2,940 Total commercial 7 2,191 6 749 13 2,940 Total 16 $ 9,212 24 $ 8,171 40 $ 17,383 December 31, 2016 Consumer: Other consumer -- $ -- 1 $ 3 1 $ 3 Total consumer -- -- 1 3 1 3 Real estate: Construction -- -- 1 18 1 18 Single-family residential 3 167 29 2,078 32 2,245 Other commercial 23 9,048 2 780 25 9,828 Total real estate 26 9,215 32 2,876 58 12,091 Commercial: Commercial 15 1,783 5 297 20 2,080 Total commercial 15 1,783 5 297 20 2,080 Total 41 $ 10,998 38 $ 3,176 79 $ 14,174
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 Three Months Ended September 30, 2017 Commercial: Commercial 1 $ 608 $ 607 $ 607 $ -- $ -- Total commercial 1 608 607 607 -- -- Total 1 $ 608 $ 607 $ 607 $ -- $ -- Three Months Ended September 30, 2016 Consumer: Other consumer 1 $ 47 $ 8 $ 8 $ -- $ -- Total consumer 1 47 8 8 -- -- Real Estate: Single-family residential 13 742 694 694 -- -- Other commercial 2 835 834 66 768 -- Total real estate 15 1,577 1,528 760 768 -- Commercial: Commercial 5 1,387 1,387 1,387 -- -- Total commercial 5 1,387 1,387 1,387 -- -- Total 21 $ 3,011 $ 2,923 $ 2,155 $ 768 $ -- Nine Months Ended September 30, 2017 Real estate: Construction 1 $ 456 $ 456 $ 456 $ -- $ -- Other commercial 2 7,362 7,362 7,362 -- 33 Total real estate 3 7,818 7,818 7,818 -- 33 Commercial: Commercial 10 1,419 1,407 1,368 39 -- Total commercial 10 1,419 1,407 1,368 39 -- Total 13 $ 9,237 $ 9,225 $ 9,186 $ 39 $ 33 Nine Months Ended September 30, 2016 Consumer: Other consumer 2 $ 50 $ 11 $ 11 $ -- $ -- Total consumer 2 50 11 11 -- -- Real estate: Single-family residential 22 1,538 1,487 933 554 -- Other commercial 27 9,797 9,765 8,633 1,132 -- Total real estate 49 11,335 11,252 9,566 1,686 -- Commercial: Commercial 16 1,987 1,959 1,959 -- -- Total commercial 16 1,987 1,959 1,959 -- -- Total 67 $ 13,372 $ 13,222 $ 11,536 $ 1,686 $ --
Financing Receivable Credit Quality Indicators [Table Text Block]	(In thousands) Risk Rate Risk Rate Risk Rate Risk Rate Risk Rate Total September 30, 2017 Consumer: Credit cards $ 176,316 $ -- $ -- $ -- $ -- $ 176,316 Other consumer 313,725 -- 4,221 -- -- 317,946 Total consumer 490,041 -- 4,221 -- -- 494,262 Real estate: Construction 507,128 2,085 6,045 16 -- 515,274 Single family residential 1,022,886 2,553 22,675 289 -- 1,048,403 Other commercial 2,175,968 11,729 43,526 -- -- 2,231,223 Total real estate 3,705,982 16,367 72,246 305 -- 3,794,900 Commercial: Commercial 661,635 6,267 21,057 1 -- 688,960 Agricultural 205,524 26 2,276 23 -- 207,849 Total commercial 867,159 6,293 23,333 24 -- 896,809 Other 25,341 -- -- -- -- 25,341 Loans acquired 1,051,889 9,673 29,862 615 -- 1,092,039 Total $ 6,140,412 $ 32,333 $ 129,662 $ 944 $ -- $ 6,303,351 (In thousands) Risk Rate Risk Rate Risk Rate Risk Rate Risk Rate Total December 31, 2016 Consumer: Credit cards $ 183,943 $ -- $ 648 $ -- $ -- $ 184,591 Other consumer 301,632 26 2,314 -- -- 303,972 Total consumer 485,575 26 2,962 -- -- 488,563 Real estate: Construction 330,080 98 6,565 16 -- 336,759 Single family residential 875,603 4,024 24,460 158 -- 904,245 Other commercial 1,738,207 6,874 41,994 -- -- 1,787,075 Total real estate 2,943,890 10,996 73,019 174 -- 3,028,079 Commercial: Commercial 616,805 558 22,162 -- -- 639,525 Agricultural 148,218 104 2,033 -- 23 150,378 Total commercial 765,023 662 24,195 -- 23 789,903 Other 20,662 -- -- -- -- 20,662 Loans acquired 1,217,886 22,181 64,075 1,541 -- 1,305,683 Total $ 5,433,036 $ 33,865 $ 164,251 $ 1,715 $ 23 $ 5,632,890
Allowance for Credit Losses on Financing Receivables [Table Text Block]	(In thousands) Commercial Real Credit Other Total Three Months Ended September 30, 2017 Balance, beginning of period (2) $ 8,105 $ 25,731 $ 3,754 $ 3,789 $ 41,379 Provision for loan losses (1) 2,310 2,150 761 241 5,462 Charge-offs (2,442 ) (896 ) (1,017 ) (819 ) (5,174 ) Recoveries 21 309 275 445 1,050 Net charge-offs (2,421 ) (587 ) (742 ) (374 ) (4,124 ) Balance, September 30, 2017 (2) $ 7,994 $ 27,294 $ 3,773 $ 3,656 $ 42,717 Nine Months Ended September 30, 2017 Balance, beginning of period (2) $ 7,739 $ 21,817 $ 3,779 $ 2,951 $ 36,286 Provision for loan losses (1) 3,255 7,984 2,168 1,920 15,327 Charge-offs (3,083 ) (3,264 ) (2,962 ) (2,986 ) (12,295 ) Recoveries 83 757 788 1,771 3,399 Net charge-offs (3,000 ) (2,507 ) (2,174 ) (1,215 ) (8,896 ) Balance, September 30, 2017 (2) $ 7,994 $ 27,294 $ 3,773 $ 3,656 $ 42,717 Period-end amount allocated to: Loans individually evaluated for impairment $ 3,996 $ 2,325 $ -- $ -- $ 6,321 Loans collectively evaluated for impairment 3,998 24,969 3,773 3,656 36,396 Balance, September 30, 2017 (2) $ 7,994 $ 27,294 $ 3,773 $ 3,656 $ 42,717 (In thousands) Commercial Real Credit Other Total Three Months Ended September 30, 2016 Balance, beginning of period (4) $ 7,832 $ 19,635 $ 3,748 $ 2,308 $ 33,523 Provision for loan losses (3) 680 6,066 501 832 8,079 Charge-offs (284 ) (6,297 ) (699 ) (600 ) (7,880 ) Recoveries 12 55 199 106 372 Net charge-offs (272 ) (6,242 ) (500 ) (494 ) (7,508 ) Balance, September 30, 2016 (4) $ 8,240 $ 19,459 $ 3,749 $ 2,646 $ 34,094 Nine Months Ended September 30, 2016 Balance, beginning of period (4) $ 5,985 $ 19,522 $ 3,893 $ 1,951 $ 31,351 Provision for loan losses (3) 4,961 7,009 1,422 1,819 15,211 Charge-offs (3,043 ) (7,350 ) (2,260 ) (1,482 ) (14,135 ) Recoveries 337 278 694 358 1,667 Net charge-offs (2,706 ) (7,072 ) (1,566 ) (1,124 ) (12,468 ) Balance, September 30, 2016 (4) $ 8,240 $ 19,459 $ 3,749 $ 2,646 $ 34,094 Period-end amount allocated to: Loans individually evaluated for impairment $ 64 $ 515 $ -- $ 1 $ 580 Loans collectively evaluated for impairment 8,176 18,944 3,749 2,645 33,514 Balance, September 30, 2016 (4) $ 8,240 $ 19,459 $ 3,749 $ 2,646 $ 34,094 Period-end amount allocated to: Loans individually evaluated for impairment $ 262 $ 417 $ -- $ 1 $ 680 Loans collectively evaluated for impairment 7,477 21,400 3,779 2,950 35,606 Balance, December 31, 2016 (5) $ 7,739 $ 21,817 $ 3,779 $ 2,951 $ 36,286
Schedule of Loans by impairment evaluation [Table Text Block]	(In thousands) Commercial Real Credit Other Total September 30, 2017 Loans individually evaluated for impairment $ 13,976 $ 33,680 $ 273 $ 3,880 $ 51,809 Loans collectively evaluated for impairment 882,833 3,761,220 176,043 339,407 5,159,503 Balance, end of period $ 896,809 $ 3,794,900 $ 176,316 $ 343,287 $ 5,211,312 December 31, 2016 Loans individually evaluated for impairment $ 11,522 $ 30,001 $ 373 $ 1,800 $ 43,696 Loans collectively evaluated for impairment 778,381 2,998,078 184,218 322,834 4,283,511 Balance, end of period $ 789,903 $ 3,028,079 $ 184,591 $ 324,634 $ 4,327,207

Note 6 - Loans Acquired (Tables

Note 6 - Loans Acquired (Tables)	9 Months Ended
	Sep. 30, 2017
Notes Tables
Carrying Value Of All Acquired Impaired Loans [Table Text Block]	Loans Acquired (in thousands) September 30, December 31, Consumer: Other consumer $ 29,662 $ 49,677 Total consumer 29,662 49,677 Real estate: Construction 48,520 57,587 Single family residential 363,796 423,176 Other commercial 565,993 690,108 Total real estate 978,309 1,170,871 Commercial: Commercial 70,620 81,837 Agricultural 13,448 3,298 Total commercial 84,068 85,135 Total loans acquired (1) $ 1,092,039 $ 1,305,683
Schedule of Financing Receivables, Non Accrual Status [Table Text Block]	(In thousands) September 30, December 31, Consumer: Credit cards $ 273 $ 373 Other consumer 3,880 1,793 Total consumer 4,153 2,166 Real estate: Construction 2,403 3,411 Single family residential 13,034 12,139 Other commercial 18,811 12,385 Total real estate 34,248 27,935 Commercial: Commercial 13,827 7,765 Agricultural 2,210 1,238 Total commercial 16,037 9,003 Total $ 54,438 $ 39,104
Past Due Financing Receivables [Table Text Block]	(In thousands) Gross 90 Days Total Current Total 90 Days September 30, 2017 Consumer: Credit cards $ 655 $ 492 $ 1,147 $ 175,169 $ 176,316 $ 218 Other consumer 4,870 2,570 7,440 310,506 317,946 4 Total consumer 5,525 3,062 8,587 485,675 494,262 222 Real estate: Construction 440 1,478 1,918 513,356 515,274 -- Single family residential 5,516 4,785 10,301 1,038,102 1,048,403 -- Other commercial 3,032 8,945 11,977 2,219,246 2,231,223 -- Total real estate 8,988 15,208 24,196 3,770,704 3,794,900 -- Commercial: Commercial 991 10,745 11,736 677,224 688,960 10 Agricultural 469 1,793 2,262 205,587 207,849 -- Total commercial 1,460 12,538 13,998 882,811 896,809 10 Other -- -- -- 25,341 25,341 -- Total $ 15,973 $ 30,808 $ 46,781 $ 5,164,531 $ 5,211,312 $ 232 December 31, 2016 Consumer: Credit cards $ 716 $ 275 $ 991 $ 183,600 $ 184,591 $ 275 Other consumer 3,786 1,027 4,813 299,159 303,972 11 Total consumer 4,502 1,302 5,804 482,759 488,563 286 Real estate: Construction 1,420 1,246 2,666 334,093 336,759 -- Single family residential 6,310 5,927 12,237 892,008 904,245 14 Other commercial 4,212 6,722 10,934 1,776,141 1,787,075 -- Total real estate 11,942 13,895 25,837 3,002,242 3,028,079 14 Commercial: Commercial 2,040 5,296 7,336 632,189 639,525 -- Agricultural 121 1,215 1,336 149,042 150,378 -- Total commercial 2,161 6,511 8,672 781,231 789,903 -- Other -- -- -- 20,662 20,662 -- Total $ 18,605 $ 21,708 $ 40,313 $ 4,286,894 $ 4,327,207 $ 300
Financing Receivable Credit Quality Indicators [Table Text Block]	(In thousands) Risk Rate Risk Rate Risk Rate Risk Rate Risk Rate Total September 30, 2017 Consumer: Credit cards $ 176,316 $ -- $ -- $ -- $ -- $ 176,316 Other consumer 313,725 -- 4,221 -- -- 317,946 Total consumer 490,041 -- 4,221 -- -- 494,262 Real estate: Construction 507,128 2,085 6,045 16 -- 515,274 Single family residential 1,022,886 2,553 22,675 289 -- 1,048,403 Other commercial 2,175,968 11,729 43,526 -- -- 2,231,223 Total real estate 3,705,982 16,367 72,246 305 -- 3,794,900 Commercial: Commercial 661,635 6,267 21,057 1 -- 688,960 Agricultural 205,524 26 2,276 23 -- 207,849 Total commercial 867,159 6,293 23,333 24 -- 896,809 Other 25,341 -- -- -- -- 25,341 Loans acquired 1,051,889 9,673 29,862 615 -- 1,092,039 Total $ 6,140,412 $ 32,333 $ 129,662 $ 944 $ -- $ 6,303,351 (In thousands) Risk Rate Risk Rate Risk Rate Risk Rate Risk Rate Total December 31, 2016 Consumer: Credit cards $ 183,943 $ -- $ 648 $ -- $ -- $ 184,591 Other consumer 301,632 26 2,314 -- -- 303,972 Total consumer 485,575 26 2,962 -- -- 488,563 Real estate: Construction 330,080 98 6,565 16 -- 336,759 Single family residential 875,603 4,024 24,460 158 -- 904,245 Other commercial 1,738,207 6,874 41,994 -- -- 1,787,075 Total real estate 2,943,890 10,996 73,019 174 -- 3,028,079 Commercial: Commercial 616,805 558 22,162 -- -- 639,525 Agricultural 148,218 104 2,033 -- 23 150,378 Total commercial 765,023 662 24,195 -- 23 789,903 Other 20,662 -- -- -- -- 20,662 Loans acquired 1,217,886 22,181 64,075 1,541 -- 1,305,683 Total $ 5,433,036 $ 33,865 $ 164,251 $ 1,715 $ 23 $ 5,632,890
Tabular Temporal Display Of Adjustments Related To Purchased Covered Impaired Loans [Table Text Block]	Three Months Ended Nine Months Ended (In thousands) 2017 2016 2017 2016 Impact on net interest income and pre-tax income $ 23 $ 65 $ 2,596 $ 1,240 Net impact, net of taxes $ 14 $ 40 $ 1,578 $ 754
Tabular Temporal Display of Accretable Yield [Table Text Block]	Three Months Ended Nine Months Ended (In thousands) Accretable Carrying Accretable Carrying Beginning balance $ 766 $ 8,448 $ 1,655 $ 17,802 Additions -- -- -- 2,388 Accretable yield adjustments 52 -- 2,698 -- Accretion (408 ) 408 (3,943 ) 3,943 Payments and other reductions, net -- (980 ) -- (16,257 ) Balance, ending $ 410 $ 7,876 $ 410 $ 7,876 Three Months Ended Nine Months Ended (In thousands) Accretable Carrying Accretable Carrying Beginning balance $ 2,365 $ 20,663 $ 954 $ 23,469 Additions -- 1,614 -- 1,614 Accretable yield adjustments 171 -- 3,245 -- Accretion (555 ) 555 (2,218 ) 2,218 Payments and other reductions, net -- (1,412 ) -- (5,881 ) Balance, ending $ 1,981 $ 21,420 $ 1,981 $ 21,420
Acquired Loans [Member]
Notes Tables
Schedule of Financing Receivables, Non Accrual Status [Table Text Block]	(In thousands) September 30, December 31, Consumer: Other consumer $ 315 $ 456 Total consumer 315 456 Real estate: Construction 1,905 7,961 Single family residential 11,840 13,366 Other commercial 7,261 22,045 Total real estate 21,006 43,372 Commercial: Commercial 2,163 2,806 Agricultural 216 198 Total commercial 2,379 3,004 Total $ 23,700 $ 46,832
Past Due Financing Receivables [Table Text Block]	(In thousands) Gross 90 Days Total Current Total 90 Days September 30, 2017 Consumer: Other consumer $ 401 $ 161 $ 562 $ 29,100 $ 29,662 $ 7 Total consumer 401 161 562 29,100 29,662 7 Real estate: Construction 19 1,420 1,439 47,081 48,520 -- Single family residential 4,785 3,127 7,912 355,884 363,796 -- Other commercial 806 2,670 3,476 562,517 565,993 -- Total real estate 5,610 7,217 12,827 965,482 978,309 -- Commercial: Commercial 156 1,788 1,944 68,676 70,620 -- Agricultural 16 42 58 13,390 13,448 -- Total commercial 172 1,830 2,002 82,066 84,068 -- Total $ 6,183 $ 9,208 $ 15,391 $ 1,076,648 $ 1,092,039 $ 7 December 31, 2016 Consumer: Other consumer $ 571 $ 189 $ 760 $ 48,917 $ 49,677 $ -- Total consumer 571 189 760 48,917 49,677 -- Real estate: Construction 132 7,332 7,464 50,123 57,587 -- Single family residential 8,358 4,857 13,215 409,961 423,176 11 Other commercial 2,836 10,741 13,577 676,531 690,108 -- Total real estate 11,326 22,930 34,256 1,136,615 1,170,871 11 Commercial: Commercial 723 2,153 2,876 78,961 81,837 -- Agricultural 48 -- 48 3,250 3,298 -- Total commercial 771 2,153 2,924 82,211 85,135 -- Total $ 12,668 $ 25,272 $ 37,940 $ 1,267,743 $ 1,305,683 $ 11
Financing Receivable Credit Quality Indicators [Table Text Block]	(In thousands) Risk Rate Risk Rate Risk Rate Risk Rate Risk Rate Total September 30, 2017 Consumer: Other consumer $ 28,982 $ -- $ 680 $ -- $ -- $ 29,662 Total consumer 28,982 -- 680 -- -- 29,662 Real estate: Construction 45,718 1,314 1,488 -- -- 48,520 Single family residential 347,821 1,534 13,825 615 -- 363,795 Other commercial 549,853 6,200 9,941 -- -- 565,994 Total real estate 943,392 9,048 25,254 615 -- 978,309 Commercial: Commercial 66,367 325 3,928 -- -- 70,620 Agricultural 13,148 300 -- -- -- 13,448 Total commercial 79,515 625 3,928 -- -- 84,068 Total $ 1,051,889 $ 9,673 $ 29,862 $ 615 $ -- $ 1,092,039 December 31, 2016 Consumer: Other consumer $ 48,992 $ 14 $ 671 $ -- $ -- $ 49,677 Total consumer 48,992 14 671 -- -- 49,677 Real estate: Construction 50,704 88 6,795 -- -- 57,587 Single family residential 400,553 2,696 18,392 1,535 -- 423,176 Other commercial 641,018 17,384 31,706 -- -- 690,108 Total real estate 1,092,275 20,168 56,893 1,535 -- 1,170,871 Commercial: Commercial 73,609 1,965 6,257 6 -- 81,837 Agricultural 3,010 34 254 -- -- 3,298 Total commercial 76,619 1,999 6,511 6 -- 85,135 Total $ 1,217,886 $ 22,181 $ 64,075 $ 1,541 $ -- $ 1,305,683

Note 7 - Goodwill and Other I37

Note 7 - Goodwill and Other Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2017
Notes Tables
Schedule of Intangible Assets and Goodwill [Table Text Block]	(In thousands) September 30, December 31, Goodwill $ 375,731 $ 348,505 Core deposit premiums: Gross carrying amount 56,532 48,692 Accumulated amortization (14,297 ) (10,625 ) Core deposit premiums, net 42,235 38,067 Purchased credit card relationships: Gross carrying amount 2,068 2,068 Accumulated amortization (1,654 ) (1,344 ) Purchased credit card relationships, net 414 724 Books of business intangible: Gross carrying amount 15,414 15,884 Accumulated amortization (2,562 ) (1,716 ) Books of business intangible, net 12,852 14,168 Other intangible assets, net 55,501 52,959 Total goodwill and other intangible assets $ 431,232 $ 401,464
Core Deposit Premium [Member]
Notes Tables
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	Year (In thousands) Remainder of 2017 $ 1,665 2018 6,557 2019 6,247 2020 6,234 2021 6,172 Thereafter 28,626 Total $ 55,501

Note 9 - Income Taxes (Tables)

Note 9 - Income Taxes (Tables)	9 Months Ended
	Sep. 30, 2017
Notes Tables
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]	Three Months Ended Nine Months Ended (In thousands) 2017 2016 2017 2016 Income taxes currently payable $ 11,946 $ 10,327 $ 30,467 $ 33,139 Deferred income taxes 2,732 455 4,962 1,070 Provision for income taxes $ 14,678 $ 10,782 $ 35,429 $ 34,209
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]	(In thousands) September 30, December 31, Deferred tax assets: Loans acquired $ 5,900 $ 7,986 Allowance for loan losses 16,841 14,754 Valuation of foreclosed assets 4,020 3,958 Tax NOLs from acquisition 12,642 13,077 Deferred compensation payable 2,983 2,785 Vacation compensation 1,828 1,740 Accrued equity and other compensation 5,138 6,367 Acquired securities 1,201 1,098 Other accrued liabilities 2,301 1,834 Unrealized loss on available-for-sale securities 6,708 9,559 Other 4,610 5,267 Gross deferred tax assets 64,172 68,425 Deferred tax liabilities: Goodwill and other intangible amortization (32,189 ) (29,601 ) Accumulated depreciation (6,403 ) (5,370 ) Other (7,369 ) (5,877 ) Gross deferred tax liabilities (45,961 ) (40,848 ) Net deferred tax asset, included in other assets $ 18,211 $ 27,577
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	Three Months Ended Nine Months Ended (In thousands) 2017 2016 2017 2016 Computed at the statutory rate (35%) $ 15,235 $ 11,974 $ 38,313 $ 36,418 Increase (decrease) in taxes resulting from: State income taxes, net of federal tax benefit 342 21 1,117 1,390 Discrete items related to ASU 2016-09 5 -- (1,372 ) -- Tax exempt interest income (955 ) (1,072 ) (3,160 ) (3,120 ) Tax exempt earnings on BOLI (178 ) (146 ) (616 ) (665 ) Merger related expenses 187 131 559 131 Federal tax credits (397 ) (890 ) (1,190 ) (943 ) Other differences, net 439 764 1,778 998 Actual tax provision $ 14,678 $ 10,782 $ 35,429 $ 34,209

Note 10 - Securities Sold Und39

Note 10 - Securities Sold Under Agreements to Repurchase (Tables)	9 Months Ended
	Sep. 30, 2017
Notes Tables
Schedule of Repurchase Agreements [Table Text Block]	Remaining Contractual Maturity of the Agreements (In thousands) Overnight and Up to 30 30-90 Days Greater than Total September 30, 2017 Repurchase agreements: U.S. Government agencies $ 121,352 $ -- $ -- $ -- $ 121,352 December 31, 2016 Repurchase agreements: U.S. Government agencies $ 101,647 $ -- $ -- $ 757 $ 102,404

Note 11 - Other Borrowings an40

Note 11 - Other Borrowings and Subordinated Debentures (Tables)	9 Months Ended
	Sep. 30, 2017
Notes Tables
Schedule of Debt [Table Text Block]	(In thousands) September 30, December 31, Other Borrowings FHLB advances, net of discount, due 2017 to 2033, 1.15% to 7.37% secured by residential real estate loans $ 477,982 $ 225,230 Notes payable, due 10/15/2020, 3.85%, fixed rate, unsecured 44,559 47,929 Total other borrowings 522,541 273,159 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, net of discount, due 6/30/2035, floating rate of 1.75% above the three month LIBOR rate, reset quarterly, callable without penalty 9,301 9,225 Trust preferred securities, net of discount, due 9/15/2037, floating rate of 1.37% above the three month LIBOR rate, reset quarterly 10,246 10,130 Trust preferred securities, net of discount, due 12/3/2033, floating rate of 2.88% above the three month LIBOR rate, reset quarterly, callable without penalty 5,157 5,161 Trust preferred securities, net of discount, due 12/13/2034, floating rate of 2.00% above the three month LIBOR rate, reset quarterly, callable without penalty 5,137 5,105 Trust preferred securities, net of discount, due 6/6/2037, floating rate of 1.57% above the three month LIBOR rate, reset quarterly, callable without penalty 10,255 10,156 Trust preferred securities, net of discount, due 12/15/2035, floating rate of 1.45% above the three month LIBOR rate, reset quarterly, callable without penalty 6,702 -- Total subordinated debentures 67,418 60,397 Total other borrowings and subordinated debentures $ 589,959 $ 333,556
Schedule of Maturities of Long-term Debt [Table Text Block]	Year (In thousands) 2017 $ 1,851 2018 23,863 2019 7,586 2020 36,343 2021 2,251 Thereafter 76,065 Total $ 147,959

Note 15 - Stock Based Compens41

Note 15 - Stock Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2017
Notes Tables
Share-based Compensation, Stock Options, Activity [Table Text Block]	Stock Options Stock Awards Stock Units Number Weighted Number Weighted Number Weighted Balance, January 1, 2017 473 $ 42.85 139 $ 40.96 113 $ 45.40 Granted -- -- -- -- 185 58.18 Stock Options Exercised (39 ) 32.16 -- -- -- -- Stock Awards/Units Vested -- -- (34 ) 36.45 (124 ) 52.71 Forfeited/Expired (3 ) 44.68 (12 ) 43.83 (13 ) 51.72 Balance, September 30, 2017 431 $ 43.82 93 $ 42.21 161 $ 53.97 Exercisable, September 30, 2017 325 $ 43.23
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]	Options Outstanding Options Exercisable Range of Exercise Prices Number of Shares Weighted Average Remaining Contractual Life (Years) Weighted Average Exercise Price Number of Shares Weighted Average Exercise Price $17.55 - $21.13 3,950 2.76 $ 19.38 3,950 $ 19.38 21.29 - 21.29 3,700 5.30 21.29 2,500 21.29 21.51 - 21.51 1,250 2.30 21.51 1,250 21.51 30.31 - 30.31 22,180 0.63 30.31 22,180 30.31 40.57 - 40.57 40,490 7.25 40.57 40,490 40.57 40.72 - 40.72 1,500 7.13 40.72 600 40.72 44.40 - 44.40 49,870 7.25 44.40 37,144 44.40 45.50 - 45.50 246,485 7.62 45.50 193,025 45.50 47.02 - 47.02 58,090 7.79 47.02 20,838 47.02 48.13 - 48.13 3,305 7.96 48.13 2,645 48.13 $17.55 - $48.13 430,820 7.12 $ 43.82 324,622 $ 43.23
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]	Nine Months Ended Expected dividend yield 1.96 % Expected stock price volatility 27.34 % Risk-free interest rate 2.01 % Expected life of options (in years) 7

Note 16 - Additional Cash Flo42

Note 16 - Additional Cash Flow Information (Tables)	9 Months Ended
	Sep. 30, 2017
Notes Tables
Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]	Nine Months Ended (In thousands) 2017 2016 Interest paid $ 21,531 $ 16,311 Income taxes paid 21,718 32,069 Transfers of loans to foreclosed assets and other real estate owned 5,311 3,846 Transfers of premises to foreclosed assets and other real estate owned 3,188 -- Transfers of premises and equipment to premises held for sale -- 7,200 Transfers of premises held for sale to foreclosed assets and other real estate owned -- 652

Note 17 - Other Operating Exp43

Note 17 - Other Operating Expenses (Tables)	9 Months Ended
	Sep. 30, 2017
Notes Tables
Schedule of Other Operating Cost and Expense, by Component [Table Text Block]	Three Months Ended Nine Months Ended (In thousands) 2017 2016 2017 2016 Professional services $ 3,946 $ 3,282 $ 13,079 $ 9,678 Postage 1,091 1,150 3,427 3,458 Telephone 943 912 3,003 3,014 Credit card expense 3,137 2,947 9,081 8,319 Marketing 1,219 1,525 4,253 4,647 Operating supplies 592 457 1,406 1,273 Amortization of intangibles 1,724 1,503 4,828 4,411 Branch right sizing expense 153 218 370 3,451 Other expense 5,458 5,185 18,588 14,851 Total other operating expenses $ 18,263 $ 17,179 $ 58,035 $ 53,102

Note 21 - Fair Value Measurem44

Note 21 - Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2017
Notes Tables
Fair Value, Assets Measured on Recurring Basis [Table Text Block]	Fair Value Measurements Using (In thousands) Fair Value Quoted Prices in Significant Other Significant September 30, 2017 ASSETS Available-for-sale securities U.S. Government agencies $ 208,220 $ -- $ 208,220 $ -- Mortgage-backed securities 959,698 -- 959,698 -- State and political subdivisions 84,822 -- 84,822 -- Other securities 64,680 -- 64,680 -- Assets held in trading accounts 49 -- 49 -- December 31, 2016 ASSETS Available-for-sale securities U.S. Treasury $ 300 $ 300 $ -- $ -- U.S. Government agencies 137,771 -- 137,771 -- Mortgage-backed securities 868,324 -- 868,324 -- States and political subdivisions 102,943 -- 102,943 -- Other securities 48,016 -- 48,016 -- Assets held in trading accounts 41 -- 41 --
Fair Value Measurements, Nonrecurring [Table Text Block]	Fair Value Measurements Using (In thousands) Fair Value Quoted Prices in Significant Other Significant September 30, 2017 ASSETS Impaired loans (1) (2) $ 11,229 $ -- $ -- $ 11,229 Foreclosed assets and other real estate owned (1) 19,506 -- -- 19,506 December 31, 2016 ASSETS Impaired loans (1) (2) $ 17,154 $ -- $ -- $ 17,154 Foreclosed assets and other real estate owned (1) 17,806 -- -- 17,806
Fair Value, by Balance Sheet Grouping [Table Text Block]	Carrying Fair Value Measurements (In thousands) Amount Level 1 Level 2 Level 3 Total September 30, 2017 Financial assets: Cash and cash equivalents $ 432,290 $ 432,290 $ -- $ -- $ 432,290 Interest bearing balances due from banks - time 4,059 -- 4,059 -- 4,059 Held-to-maturity securities 406,033 -- 412,140 -- 412,140 Mortgage loans held for sale 12,614 -- -- 12,614 12,614 Interest receivable 30,749 -- 30,749 -- 30,749 Legacy loans (net of allowance) 5,168,595 -- -- 5,140,768 5,140,768 Loans acquired (net of allowance) 1,092,039 -- -- 1,086,160 1,086,160 Financial liabilities: Non-interest bearing transaction accounts 1,669,860 -- 1,669,860 -- 1,669,860 Interest bearing transaction accounts and savings deposits 4,344,779 -- 4,344,779 -- 4,344,779 Time deposits 1,310,951 -- -- 1,301,451 1,301,451 Federal funds purchased and securities sold under agreements to repurchase 121,687 -- 121,687 -- 121,687 Other borrowings 522,541 -- 526,266 -- 526,266 Subordinated debentures 67,418 -- 62,142 -- 62,142 Interest payable 2,043 -- 2,043 -- 2,043 December 31, 2016 Financial assets: Cash and cash equivalents $ 285,659 $ 285,659 $ -- $ -- $ 285,659 Interest bearing balances due from banks - time 4,563 -- 4,563 -- 4,563 Held-to-maturity securities 462,096 -- 465,960 -- 465,960 Mortgage loans held for sale 27,788 -- -- 27,788 27,788 Interest receivable 27,788 -- 27,788 -- 27,788 Legacy loans (net of allowance) 4,290,921 -- -- 4,305,165 4,305,165 Loans acquired (net of allowance) 1,305,683 -- -- 1,310,017 1,310,017 Financial liabilities: Non-interest bearing transaction accounts 1,491,676 -- 1,491,676 -- 1,491,676 Interest bearing transaction accounts and savings deposits 3,956,483 -- 3,956,483 -- 3,956,483 Time deposits 1,287,060 -- -- 1,278,339 1,278,339 Federal funds purchased and securities sold under agreements to repurchase 115,029 -- 115,029 -- 115,029 Other borrowings 273,159 -- 292,367 -- 292,367 Subordinated debentures 60,397 -- 55,318 -- 55,318 Interest payable 1,668 -- 1,668 -- 1,668

Note 1 - Basis of Presentatio45

Note 1 - Basis of Presentation (Details Textual) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Income Tax Expense (Benefit)	$ 14,678,000	$ 10,782,000	$ 35,429,000	$ 34,209,000
Employee Stock Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	0	3,305	0	61,395
Accounting Standards Update 2016-09 [Member]
Income Tax Expense (Benefit)	$ 22,000		$ 1,500,000

Note 1 - Basis of Presentatio46

Note 1 - Basis of Presentation - Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Net income available to common shareholders		$ 28,852	$ 23,429	$ 74,037	$ 69,819
Average common shares outstanding (in shares)		32,214	30,621	31,797	30,434
Average potential dilutive common shares (in shares)		210	223	210	223
Average diluted common shares (in shares)		32,424	30,844	32,007	30,657
Basic earnings per share (in dollars per share)		$ 0.90	$ 0.77	$ 2.33	$ 2.29
Diluted earnings per share (1) (in dollars per share)	[1]	$ 0.89	$ 0.76	$ 2.31	$ 2.28
[1]	Stock options to purchase 3,305 and 61,395 shares for the three and nine months ended September 30, 2016 were not included in the diluted EPS calculation because the exercise price of those options exceeded the average market price for each period. There were no stock options excluded from the earnings per share calculation due to the related exercise price exceeding the average market price for the three and nine months ended September 30, 2017.

Note 2 - Acquisitions (Details

Note 2 - Acquisitions (Details Textual) $ in Thousands	May 15, 2017USD ($)shares	Sep. 09, 2016USD ($)shares	Sep. 30, 2017USD ($)	Dec. 31, 2016USD ($)
Goodwill			$ 375,731	$ 348,505
Hardeman County Investment Company, Inc. [Member]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares | shares	799,970
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned	$ 42,600
Payments to Acquire Businesses, Gross	$ 30,000
Number of Bank Branches	10
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets	$ 462,893
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Loans	251,649
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Total Deposits	388,976
Goodwill	$ 29,402
Citizens National Bank [Member]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares | shares		835,741
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned		$ 41,300
Payments to Acquire Businesses, Gross		$ 35,000
Number of Bank Branches		9
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets		$ 585,149
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Loans		340,850
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Total Deposits		509,857
Goodwill		23,376
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Loans Acquired Not Covered by FDIC Loss Share		$ 340,900

Note 2 - Acquisitions - Assets

Note 2 - Acquisitions - Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	May 15, 2017	Sep. 09, 2016	Sep. 30, 2017	Dec. 31, 2016
Goodwill			$ 375,731	$ 348,505
Hardeman County Investment Company, Inc. [Member]
Cash and due from banks	$ 8,001
Interest bearing balances due from banks - time	1,984
Investment securities	170,338
Loans acquired	251,649
Foreclosed assets	631
Premises and equipment	11,163
Bank owned life insurance	7,819
Goodwill	29,402
Other assets	2,638
Total assets acquired	462,893
Non-interest bearing transaction accounts	76,555
Interest bearing transaction accounts and savings deposits	214,872
Time deposits	97,549
Total deposits	388,976
Securities sold under agreement to repurchase	17,163
Other borrowings	3,000
Subordinated debentures	6,702
Accrued interest and other liabilities	3,815
Total liabilities assumed	419,656
Equity
Total liabilities and equity assumed	419,656
Net assets acquired	43,237
Purchase price	72,639
Hardeman County Investment Company, Inc. [Member] | Core Deposit Premium [Member]
Intangibles	7,840
Hardeman County Investment Company, Inc. [Member] | Other Intangible Assets [Member]
Intangibles	830
Hardeman County Investment Company, Inc. [Member] | Cost Acquired [Member]
Cash and due from banks	8,001
Interest bearing balances due from banks - time	1,984
Investment securities	170,654
Loans acquired	257,641
Allowance for loan losses	(2,382)
Foreclosed assets	1,083
Premises and equipment	9,905
Bank owned life insurance	7,819
Goodwill	11,485
Other assets	2,639
Total assets acquired	468,829
Non-interest bearing transaction accounts	76,555
Interest bearing transaction accounts and savings deposits	214,872
Time deposits	97,917
Total deposits	389,344
Securities sold under agreement to repurchase	17,163
Other borrowings	3,000
Subordinated debentures	6,702
Accrued interest and other liabilities	1,891
Total liabilities assumed	418,100
Equity	50,729
Total liabilities and equity assumed	468,829
Hardeman County Investment Company, Inc. [Member] | Fair Value Adjustments [Member]
Cash and due from banks
Interest bearing balances due from banks - time
Investment securities	(316)
Loans acquired	(5,992)
Allowance for loan losses	2,382
Foreclosed assets	(452)
Premises and equipment	1,258
Goodwill	(11,485)
Other assets	(1)
Total assets acquired	(5,936)
Non-interest bearing transaction accounts
Interest bearing transaction accounts and savings deposits
Time deposits	(368)
Total deposits	(368)
Securities sold under agreement to repurchase
Other borrowings
Subordinated debentures
Accrued interest and other liabilities	1,924
Total liabilities assumed	1,556
Equity	(50,729)
Total liabilities and equity assumed	(49,173)
Hardeman County Investment Company, Inc. [Member] | Fair Value Adjustments [Member] | Core Deposit Premium [Member]
Intangibles	7,840
Hardeman County Investment Company, Inc. [Member] | Fair Value Adjustments [Member] | Other Intangible Assets [Member]
Intangibles	$ 830
Citizens National Bank [Member]
Cash and due from banks		$ 131,116
Investment securities		61,988
Loans acquired		340,850
Allowance for loan losses
Foreclosed assets		3,442
Premises and equipment		8,085
Bank owned life insurance		6,632
Goodwill		23,376
Other assets		17,370
Total assets acquired		585,149
Non-interest bearing transaction accounts		109,281
Interest bearing transaction accounts and savings deposits		204,912
Time deposits		195,664
Total deposits		509,857
Securities sold under agreement to repurchase		13,233
Accrued interest and other liabilities		5,088
Total liabilities assumed		532,225
Equity
Total liabilities and equity assumed		532,225
Net assets acquired		52,924
Purchase price		76,300
Federal funds sold		10,000
FHLB borrowings		4,047
Citizens National Bank [Member] | Core Deposit Premium [Member]
Intangibles		5,075
Citizens National Bank [Member] | Other Intangible Assets [Member]
Intangibles		591
Citizens National Bank [Member] | Cost Acquired [Member]
Cash and due from banks		131,467
Investment securities		61,987
Loans acquired		350,361
Allowance for loan losses		(4,313)
Foreclosed assets		4,960
Premises and equipment		6,746
Bank owned life insurance		6,632
Other assets		17,364
Total assets acquired		585,204
Non-interest bearing transaction accounts		109,281
Interest bearing transaction accounts and savings deposits		204,912
Time deposits		195,664
Total deposits		509,857
Securities sold under agreement to repurchase		13,233
Accrued interest and other liabilities		3,558
Total liabilities assumed		530,648
Equity		54,556
Total liabilities and equity assumed		585,204
Federal funds sold		10,000
FHLB borrowings		4,000
Citizens National Bank [Member] | Cost Acquired [Member] | Core Deposit Premium [Member]
Intangibles
Citizens National Bank [Member] | Cost Acquired [Member] | Other Intangible Assets [Member]
Intangibles
Citizens National Bank [Member] | Fair Value Adjustments [Member]
Cash and due from banks		(351)
Investment securities		1
Loans acquired		(9,511)
Allowance for loan losses		4,313
Foreclosed assets		(1,518)
Premises and equipment		1,339
Bank owned life insurance
Other assets		6
Total assets acquired		(55)
Non-interest bearing transaction accounts
Interest bearing transaction accounts and savings deposits
Time deposits
Total deposits
Securities sold under agreement to repurchase
Accrued interest and other liabilities		1,530
Total liabilities assumed		1,577
Equity		(54,556)
Total liabilities and equity assumed		(52,979)
Federal funds sold
FHLB borrowings		47
Citizens National Bank [Member] | Fair Value Adjustments [Member] | Core Deposit Premium [Member]
Intangibles		5,075
Citizens National Bank [Member] | Fair Value Adjustments [Member] | Other Intangible Assets [Member]
Intangibles		$ 591

Note 3 - Investment Securitie49

Note 3 - Investment Securities (Details Textual) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Securities Continuous Unrealized Loss Position, Fair Value			$ 1,200,000,000
Securities Continuous Unrealized Loss Position Fair Value Percent of Portfolio			69.70%
Available-for-sale Securities Pledged as Collateral	$ 985,800,000		$ 985,800,000		$ 915,200,000
Available-for-sale Securities, Gross Realized Gains	3,000	$ 315,000	2,300,000	$ 4,400,000
Available-for-sale Securities, Gross Realized Losses	$ 0	$ 0	$ 5,000	$ 0

Note 3 - Investment Securitie50

Note 3 - Investment Securities - Summary of Investment Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Amortized Cost	$ 406,033	$ 462,096
Gross Unrealized Gains	6,493	5,137
Gross Unrealized Losses	(386)	(1,273)
Estimated Fair Value	412,140	465,960
Amortized Cost	1,333,815	1,181,484
Gross Unrealized Gains	1,939	1,279
Gross Unrealized Losses	(18,334)	(25,409)
Estimated Fair Value	1,317,420	1,157,354
US Government Agencies Debt Securities [Member]
Amortized Cost	66,928	76,875
Gross Unrealized Gains	40	107
Gross Unrealized Losses	(140)	(182)
Estimated Fair Value	66,828	76,800
Amortized Cost	210,004	140,005
Gross Unrealized Gains	273	67
Gross Unrealized Losses	(2,057)	(2,301)
Estimated Fair Value	208,220	137,771
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Amortized Cost	16,972	19,773
Gross Unrealized Gains	56	63
Gross Unrealized Losses	(191)	(249)
Estimated Fair Value	16,837	19,587
Amortized Cost	973,111	885,783
Gross Unrealized Gains	120	178
Gross Unrealized Losses	(13,533)	(17,637)
Estimated Fair Value	959,698	868,324
US States and Political Subdivisions Debt Securities [Member]
Amortized Cost	320,116	362,532
Gross Unrealized Gains	6,397	4,967
Gross Unrealized Losses	(55)	(842)
Estimated Fair Value	326,458	366,657
Amortized Cost	87,405	108,374
Gross Unrealized Gains	161	38
Gross Unrealized Losses	(2,744)	(5,469)
Estimated Fair Value	84,822	102,943
Other Securities [Member]
Amortized Cost	2,017	2,916
Gross Unrealized Gains
Gross Unrealized Losses
Estimated Fair Value	2,017	2,916
Amortized Cost	63,295	47,022
Gross Unrealized Gains	1,385	996
Gross Unrealized Losses		(2)
Estimated Fair Value	64,680	48,016
US Treasury Securities [Member]
Amortized Cost		300
Gross Unrealized Gains
Gross Unrealized Losses
Estimated Fair Value		$ 300

Note 3 - Investment Securitie51

Note 3 - Investment Securities - Securities With Unrealized Losses (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2017USD ($)
Held-to-maturity, less than 12 months, estimated fair value	$ 28,341
Held-to-maturity, less than 12 months, gross unrealized losses	(136)
Held-to-maturity, 12 months or more, estimated fair value	49,234
Held-to-maturity, 12 months or more, gross unrealized losses	(250)
Held-to-maturity, total, estimated fair value	77,575
Held-to-maturity, total, gross unrealized losses	(386)
Available-for-sale, less than 12 months, estimated fair value	694,627
Available-for-sale, less than 12 months, gross unrealized losses	(8,240)
Available-for-sale, 12 months or more, estimated fair value	432,975
Available-for-sale, 12 months or more, gross unrealized losses	(10,094)
Available-for-sale, total, estimated fair value	1,127,602
Available-for-sale, total, gross unrealized losses	(18,334)
US Government Agencies Debt Securities [Member]
Held-to-maturity, less than 12 months, estimated fair value	12,947
Held-to-maturity, less than 12 months, gross unrealized losses	(53)
Held-to-maturity, 12 months or more, estimated fair value	39,913
Held-to-maturity, 12 months or more, gross unrealized losses	(87)
Held-to-maturity, total, estimated fair value	52,860
Held-to-maturity, total, gross unrealized losses	(140)
Available-for-sale, less than 12 months, estimated fair value	66,254
Available-for-sale, less than 12 months, gross unrealized losses	(750)
Available-for-sale, 12 months or more, estimated fair value	82,211
Available-for-sale, 12 months or more, gross unrealized losses	(1,307)
Available-for-sale, total, estimated fair value	148,465
Available-for-sale, total, gross unrealized losses	(2,057)
Collateralized Mortgage Backed Securities [Member]
Held-to-maturity, less than 12 months, estimated fair value	4,094
Held-to-maturity, less than 12 months, gross unrealized losses	(42)
Held-to-maturity, 12 months or more, estimated fair value	6,687
Held-to-maturity, 12 months or more, gross unrealized losses	(149)
Held-to-maturity, total, estimated fair value	10,781
Held-to-maturity, total, gross unrealized losses	(191)
Available-for-sale, less than 12 months, estimated fair value	626,560
Available-for-sale, less than 12 months, gross unrealized losses	(7,458)
Available-for-sale, 12 months or more, estimated fair value	273,883
Available-for-sale, 12 months or more, gross unrealized losses	(6,075)
Available-for-sale, total, estimated fair value	900,443
Available-for-sale, total, gross unrealized losses	(13,533)
US States and Political Subdivisions Debt Securities [Member]
Held-to-maturity, less than 12 months, estimated fair value	11,300
Held-to-maturity, less than 12 months, gross unrealized losses	(41)
Held-to-maturity, 12 months or more, estimated fair value	2,634
Held-to-maturity, 12 months or more, gross unrealized losses	(14)
Held-to-maturity, total, estimated fair value	13,934
Held-to-maturity, total, gross unrealized losses	(55)
Available-for-sale, less than 12 months, estimated fair value	1,813
Available-for-sale, less than 12 months, gross unrealized losses	(32)
Available-for-sale, 12 months or more, estimated fair value	76,781
Available-for-sale, 12 months or more, gross unrealized losses	(2,712)
Available-for-sale, total, estimated fair value	78,594
Available-for-sale, total, gross unrealized losses	(2,744)
Other Securities [Member]
Available-for-sale, less than 12 months, estimated fair value
Available-for-sale, less than 12 months, gross unrealized losses
Available-for-sale, 12 months or more, estimated fair value	100
Available-for-sale, 12 months or more, gross unrealized losses
Available-for-sale, total, estimated fair value	100
Available-for-sale, total, gross unrealized losses

Note 3 - Investment Securitie52

Note 3 - Investment Securities - Income Earned on Securities (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Total	$ 9,218	$ 7,774	$ 28,659	$ 24,779
Held-to-maturity Securities [Member]
Taxable	625	771	1,922	3,094
Non-taxable	2,135	2,617	6,635	8,162
Available-for-sale Securities [Member]
Taxable	5,949	4,005	18,003	12,931
Non-taxable	$ 509	$ 381	$ 2,099	$ 592

Note 3 - Investment Securitie53

Note 3 - Investment Securities - Maturities of Investment Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Held-to-maturity, amortized cost, one year or less	$ 50,829
Held-to-maturity, fair value, one year or less	50,838
Available-for-sale, amortized cost, one year or less	21,211
Available-for-sale, fair value, one year or less	21,145
Held-to-maturity, amortized cost, after one through five years	105,323
Held-to-maturity, fair value, after one through five years	105,823
Available-for-sale, amortized cost, after one through five years	81,147
Available-for-sale, fair value, after one through five years	80,388
Held-to-maturity, amortized cost, after five through ten years	99,399
Held-to-maturity, fair value, after five through ten years	100,902
Available-for-sale, amortized cost, after five through ten years	14,532
Available-for-sale, fair value, after five through ten years	14,427
Held-to-maturity, amortized cost, after ten years	133,510
Held-to-maturity, fair value, after ten years	137,740
Available-for-sale, amortized cost, after ten years	181,619
Available-for-sale, fair value, after ten years	178,182
Held-to-maturity, amortized cost, securities not due on a single maturity date	16,972
Held-to-maturity, fair value, securities not due on a single maturity date	16,837
Available-for-sale, amortized cost, securities not due on a single maturity date	973,111
Available-for-sale, fair value, securities not due on a single maturity date	959,698
Available-for-sale, amortized cost, other securities (no maturity)	62,195
Available-for-sale, fair value, other securities (no maturity)	63,580
Held-to-maturity, amortized cost, total	406,033	$ 462,096
Held-to-maturity, fair value, total	412,140	465,960
Available-for-sale, amortized cost, total	1,333,815	1,181,484
Available-for-sale, fair value, total	$ 1,317,420	$ 1,157,354

Note 4 - Other Assets and Oth54

Note 4 - Other Assets and Other Liabilities Held for Sale (Details Textual) - USD ($) $ in Thousands	Sep. 30, 2017	Aug. 28, 2017
Other Assets Held-for-sale	$ 182,378	$ 182,400
Other Liabilities Held-for-sale	$ 176,964	$ 177,000

Note 5 - Loans and Allowance 55

Note 5 - Loans and Allowance for Loan Losses (Details Textual)	3 Months Ended		9 Months Ended
	Sep. 30, 2017USD ($)	Sep. 30, 2016USD ($)	Sep. 30, 2017USD ($)	Sep. 30, 2016USD ($)	Jun. 30, 2017USD ($)	Dec. 31, 2016USD ($)	Jun. 30, 2016USD ($)	Dec. 31, 2015USD ($)
Loans and Leases Receivable, Gross	$ 6,303,000,000		$ 6,303,000,000			$ 5,633,000,000
Impaired Financing Receivable, Recorded Investment	51,809,000		51,809,000			43,696,000
Impaired Financing Receivable, Related Allowance	6,321,000		6,321,000			680,000
Impaired Financing Receivable, Interest Income, Accrual Method	350,000	$ 430,000	1,050,000	$ 1,230,000
Impaired Financing Receivable, Average Recorded Investment	$ 54,468,000	$ 42,121,000	$ 52,504,000	$ 34,048,000
Financing Receivable, Modifications, Number of Contracts	1	21	13	67
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 608,000	$ 3,011,000	$ 9,237,000	$ 13,372,000
Financing Receivable, Specific Reserve	0		33,000	402,000
Mortgage Loans in Process of Foreclosure, Amount	1,180,000		1,180,000			1,714,000
Real Estate Acquired Through Foreclosure	31,477,000		31,477,000			26,895,000
Loans and Leases Receivable Classified	22,600,000		22,600,000			47,800,000
Provision for Loan and Lease Losses	5,462,000	8,294,000	16,792,000	15,733,000
Loans and Leases Receivable, Allowance	42,717,000		42,717,000			36,286,000
Risk Ratings 6,7, and 8 [Member]
Loans and Leases Receivable Classified	130,600,000		130,600,000			166,000,000
Substandard [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net	7,900,000		7,900,000			17,800,000
OREO Secured by Residential Real Estate Properties [Member]
Real Estate Acquired Through Foreclosure	5,275,000		5,275,000			5,094,000
Acquired Loans [Member]
Loans and Leases Receivable, Gross	1,092,039,000		1,092,039,000			1,305,683,000
Provision for Loan and Lease Losses	0	215,000	1,464,000	522,000
Allowance for Loan and Lease Losses, Write-offs		215,000	2,000,000	522,000
Loans and Leases Receivable, Allowance, Covered	391,000	954,000	391,000	954,000		954,000	$ 954,000	$ 954,000
Loans, Including Acquired Loans [Member]
Loans and Leases Receivable, Allowance	43,108,000	35,048,000	43,108,000	35,048,000	$ 41,770,000	37,240,000	$ 34,477,000	$ 32,305,000
OREO Received in Full or Partial Satisfaction of Loans [Member] | Commercial Real Estate and Residential Real Estate [Member]
Financing Receivable, Modifications, Pre-Modification Recorded Investment			117,000	166,500
Commercial Real Estate Portfolio Segment [Member]
Loans and Leases Receivable, Gross	3,794,900,000		3,794,900,000			3,028,079,000
Impaired Financing Receivable, Recorded Investment	33,680,000		33,680,000			30,001,000
Impaired Financing Receivable, Related Allowance	2,325,000		2,325,000			417,000
Impaired Financing Receivable, Interest Income, Accrual Method	223,000	341,000	687,000	1,034,000
Impaired Financing Receivable, Average Recorded Investment	34,766,000	$ 34,352,000	$ 34,913,000	$ 28,567,000
Financing Receivable, Modifications, Number of Contracts		15	3	49
Financing Receivable, Modifications, Pre-Modification Recorded Investment		$ 1,577,000	$ 7,818,000	$ 11,335,000
Financing Receivable, Modifications, Subsequent Default, Number of Contracts			1
Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down			$ 440,000
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member]
Loans and Leases Receivable, Gross	978,309,000		978,309,000			1,170,871,000
Consumer Portfolio Segment [Member]
Loans and Leases Receivable, Gross	494,262,000		494,262,000			488,563,000
Impaired Financing Receivable, Recorded Investment	4,153,000		4,153,000			2,173,000
Impaired Financing Receivable, Related Allowance						1,000
Impaired Financing Receivable, Interest Income, Accrual Method	35,000	14,000	76,000	42,000
Impaired Financing Receivable, Average Recorded Investment	3,597,000	$ 1,763,000	3,003,000	$ 1,222,000
Financing Receivable, Modifications, Number of Contracts		1		2
Financing Receivable, Modifications, Pre-Modification Recorded Investment		$ 47,000		$ 50,000
Consumer Portfolio Segment [Member] | Acquired Loans [Member]
Loans and Leases Receivable, Gross	$ 29,662,000		$ 29,662,000			$ 49,677,000
Consumer Portfolio Segment [Member] | Consumer Loans [Member]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts				1
Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down				$ 39,000

Note 5 - Loans and Allowance 56

Note 5 - Loans and Allowance for Loan Losses - Loan Portfolio by Categories (Details) - USD ($)		Sep. 30, 2017	Dec. 31, 2016
Loans		$ 6,303,000,000	$ 5,633,000,000
Loans acquired, net of discount and allowance	[1]	1,092,039,000	1,305,683,000
Total loans		6,303,351,000	5,632,890,000
Loans, Excluding Acquired Loans [Member]
Loans		5,211,312,000	4,327,207,000
Consumer Portfolio Segment [Member]
Loans		494,262,000	488,563,000
Consumer Portfolio Segment [Member] | Loans, Excluding Acquired Loans [Member]
Loans		494,262,000	488,563,000
Consumer Portfolio Segment [Member] | Credit Card Receivable [Member]
Loans		176,316,000	184,591,000
Consumer Portfolio Segment [Member] | Credit Card Receivable [Member] | Loans, Excluding Acquired Loans [Member]
Loans		176,316,000	184,591,000
Consumer Portfolio Segment [Member] | Other Loans [Member]
Loans		317,946,000	303,972,000
Consumer Portfolio Segment [Member] | Other Loans [Member] | Loans, Excluding Acquired Loans [Member]
Loans		317,946,000	303,972,000
Commercial Real Estate Portfolio Segment [Member]
Loans		3,794,900,000	3,028,079,000
Commercial Real Estate Portfolio Segment [Member] | Loans, Excluding Acquired Loans [Member]
Loans		3,794,900,000	3,028,079,000
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member]
Loans		515,274,000	336,759,000
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Loans, Excluding Acquired Loans [Member]
Loans		515,274,000	336,759,000
Commercial Real Estate Portfolio Segment [Member] | Single Family Residential Loans [Member]
Loans		1,048,403,000	904,245,000
Commercial Real Estate Portfolio Segment [Member] | Single Family Residential Loans [Member] | Loans, Excluding Acquired Loans [Member]
Loans		1,048,403,000	904,245,000
Commercial Real Estate Portfolio Segment [Member] | Other Commercial Loans [Member]
Loans		2,231,223,000	1,787,075,000
Commercial Real Estate Portfolio Segment [Member] | Other Commercial Loans [Member] | Loans, Excluding Acquired Loans [Member]
Loans		2,231,223,000	1,787,075,000
Commercial Portfolio Segment [Member]
Loans		896,809,000	789,903,000
Commercial Portfolio Segment [Member] | Loans, Excluding Acquired Loans [Member]
Loans		896,809,000	789,903,000
Commercial Portfolio Segment [Member] | Commercial Loans [Member]
Loans		688,960,000	639,525,000
Commercial Portfolio Segment [Member] | Commercial Loans [Member] | Loans, Excluding Acquired Loans [Member]
Loans		688,960,000	639,525,000
Commercial Portfolio Segment [Member] | Agricultural Loans [Member]
Loans		207,849,000	150,378,000
Commercial Portfolio Segment [Member] | Agricultural Loans [Member] | Loans, Excluding Acquired Loans [Member]
Loans		207,849,000	150,378,000
Unallocated Financing Receivables [Member]
Loans		25,341,000	20,662,000
Unallocated Financing Receivables [Member] | Loans, Excluding Acquired Loans [Member]
Loans		$ 25,341,000	$ 20,662,000
[1]	See Note 6, Loans Acquired, for segregation of loans acquired by loan class.

Note 5 - Loans and Allowance 57

Note 5 - Loans and Allowance for Loan Losses - Nonaccrual Loans, Excluding Loans Acquired, Segregated by Class of Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Loans in nonaccrual status	$ 54,438	$ 39,104
Consumer Portfolio Segment [Member]
Loans in nonaccrual status	4,153	2,166
Consumer Portfolio Segment [Member] | Credit Card Receivable [Member]
Loans in nonaccrual status	273	373
Consumer Portfolio Segment [Member] | Other Loans [Member]
Loans in nonaccrual status	3,880	1,793
Commercial Real Estate Portfolio Segment [Member]
Loans in nonaccrual status	34,248	27,935
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member]
Loans in nonaccrual status	2,403	3,411
Commercial Real Estate Portfolio Segment [Member] | Single Family Residential Loans [Member]
Loans in nonaccrual status	13,034	12,139
Commercial Real Estate Portfolio Segment [Member] | Other Commercial Loans [Member]
Loans in nonaccrual status	18,811	12,385
Commercial Portfolio Segment [Member]
Loans in nonaccrual status	16,037	9,003
Commercial Portfolio Segment [Member] | Commercial Loans [Member]
Loans in nonaccrual status	13,827	7,765
Commercial Portfolio Segment [Member] | Agricultural Loans [Member]
Loans in nonaccrual status	$ 2,210	$ 1,238

Note 5 - Loans and Allowance 58

Note 5 - Loans and Allowance for Loan Losses - Age Analysis of Past Due Loans, Excluding Loans Acquired, Segregated by Class of Loans (Details) - USD ($)	Sep. 30, 2017	Dec. 31, 2016
Loans	$ 6,303,000,000	$ 5,633,000,000
Loans, Excluding Acquired Loans [Member]
Past Due	46,781,000	40,313,000
Current	5,164,531,000	4,286,894,000
Loans	5,211,312,000	4,327,207,000
90 Days Past Due & Accruing	232,000	300,000
Financing Receivables, 30 to 89 Days Past Due [Member] | Loans, Excluding Acquired Loans [Member]
Past Due	15,973,000	18,605,000
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Loans, Excluding Acquired Loans [Member]
Past Due	30,808,000	21,708,000
Consumer Portfolio Segment [Member]
Loans	494,262,000	488,563,000
Consumer Portfolio Segment [Member] | Loans, Excluding Acquired Loans [Member]
Past Due	8,587,000	5,804,000
Current	485,675,000	482,759,000
Loans	494,262,000	488,563,000
90 Days Past Due & Accruing	222,000	286,000
Consumer Portfolio Segment [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] | Loans, Excluding Acquired Loans [Member]
Past Due	5,525,000	4,502,000
Consumer Portfolio Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Loans, Excluding Acquired Loans [Member]
Past Due	3,062,000	1,302,000
Consumer Portfolio Segment [Member] | Credit Card Receivable [Member]
Loans	176,316,000	184,591,000
Consumer Portfolio Segment [Member] | Credit Card Receivable [Member] | Loans, Excluding Acquired Loans [Member]
Past Due	1,147,000	991,000
Current	175,169,000	183,600,000
Loans	176,316,000	184,591,000
90 Days Past Due & Accruing	218,000	275,000
Consumer Portfolio Segment [Member] | Credit Card Receivable [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] | Loans, Excluding Acquired Loans [Member]
Past Due	655,000	716,000
Consumer Portfolio Segment [Member] | Credit Card Receivable [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Loans, Excluding Acquired Loans [Member]
Past Due	492,000	275,000
Consumer Portfolio Segment [Member] | Other Loans [Member]
Loans	317,946,000	303,972,000
Consumer Portfolio Segment [Member] | Other Loans [Member] | Loans, Excluding Acquired Loans [Member]
Past Due	7,440,000	4,813,000
Current	310,506,000	299,159,000
Loans	317,946,000	303,972,000
90 Days Past Due & Accruing	4,000	11,000
Consumer Portfolio Segment [Member] | Other Loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] | Loans, Excluding Acquired Loans [Member]
Past Due	4,870,000	3,786,000
Consumer Portfolio Segment [Member] | Other Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Loans, Excluding Acquired Loans [Member]
Past Due	2,570,000	1,027,000
Commercial Real Estate Portfolio Segment [Member]
Loans	3,794,900,000	3,028,079,000
Commercial Real Estate Portfolio Segment [Member] | Loans, Excluding Acquired Loans [Member]
Past Due	24,196,000	25,837,000
Current	3,770,704,000	3,002,242,000
Loans	3,794,900,000	3,028,079,000
90 Days Past Due & Accruing		14,000
Commercial Real Estate Portfolio Segment [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] | Loans, Excluding Acquired Loans [Member]
Past Due	8,988,000	11,942,000
Commercial Real Estate Portfolio Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Loans, Excluding Acquired Loans [Member]
Past Due	15,208,000	13,895,000
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member]
Loans	515,274,000	336,759,000
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Loans, Excluding Acquired Loans [Member]
Past Due	1,918,000	2,666,000
Current	513,356,000	334,093,000
Loans	515,274,000	336,759,000
90 Days Past Due & Accruing
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] | Loans, Excluding Acquired Loans [Member]
Past Due	440,000	1,420,000
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Loans, Excluding Acquired Loans [Member]
Past Due	1,478,000	1,246,000
Commercial Real Estate Portfolio Segment [Member] | Single Family Residential Loans [Member]
Loans	1,048,403,000	904,245,000
Commercial Real Estate Portfolio Segment [Member] | Single Family Residential Loans [Member] | Loans, Excluding Acquired Loans [Member]
Past Due	10,301,000	12,237,000
Current	1,038,102,000	892,008,000
Loans	1,048,403,000	904,245,000
90 Days Past Due & Accruing		14,000
Commercial Real Estate Portfolio Segment [Member] | Single Family Residential Loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] | Loans, Excluding Acquired Loans [Member]
Past Due	5,516,000	6,310,000
Commercial Real Estate Portfolio Segment [Member] | Single Family Residential Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Loans, Excluding Acquired Loans [Member]
Past Due	4,785,000	5,927,000
Commercial Real Estate Portfolio Segment [Member] | Other Commercial Loans [Member]
Loans	2,231,223,000	1,787,075,000
Commercial Real Estate Portfolio Segment [Member] | Other Commercial Loans [Member] | Loans, Excluding Acquired Loans [Member]
Past Due	11,977,000	10,934,000
Current	2,219,246,000	1,776,141,000
Loans	2,231,223,000	1,787,075,000
90 Days Past Due & Accruing
Commercial Real Estate Portfolio Segment [Member] | Other Commercial Loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] | Loans, Excluding Acquired Loans [Member]
Past Due	3,032,000	4,212,000
Commercial Real Estate Portfolio Segment [Member] | Other Commercial Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Loans, Excluding Acquired Loans [Member]
Past Due	8,945,000	6,722,000
Commercial Portfolio Segment [Member]
Loans	896,809,000	789,903,000
Commercial Portfolio Segment [Member] | Loans, Excluding Acquired Loans [Member]
Past Due	13,998,000	8,672,000
Current	882,811,000	781,231,000
Loans	896,809,000	789,903,000
90 Days Past Due & Accruing	10,000
Commercial Portfolio Segment [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] | Loans, Excluding Acquired Loans [Member]
Past Due	1,460,000	2,161,000
Commercial Portfolio Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Loans, Excluding Acquired Loans [Member]
Past Due	12,538,000	6,511,000
Commercial Portfolio Segment [Member] | Commercial Loans [Member]
Loans	688,960,000	639,525,000
Commercial Portfolio Segment [Member] | Commercial Loans [Member] | Loans, Excluding Acquired Loans [Member]
Past Due	11,736,000	7,336,000
Current	677,224,000	632,189,000
Loans	688,960,000	639,525,000
90 Days Past Due & Accruing	10,000
Commercial Portfolio Segment [Member] | Commercial Loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] | Loans, Excluding Acquired Loans [Member]
Past Due	991,000	2,040,000
Commercial Portfolio Segment [Member] | Commercial Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Loans, Excluding Acquired Loans [Member]
Past Due	10,745,000	5,296,000
Commercial Portfolio Segment [Member] | Agricultural Loans [Member]
Loans	207,849,000	150,378,000
Commercial Portfolio Segment [Member] | Agricultural Loans [Member] | Loans, Excluding Acquired Loans [Member]
Past Due	2,262,000	1,336,000
Current	205,587,000	149,042,000
Loans	207,849,000	150,378,000
90 Days Past Due & Accruing
Commercial Portfolio Segment [Member] | Agricultural Loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] | Loans, Excluding Acquired Loans [Member]
Past Due	469,000	121,000
Commercial Portfolio Segment [Member] | Agricultural Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Loans, Excluding Acquired Loans [Member]
Past Due	1,793,000	1,215,000
Unallocated Financing Receivables [Member]
Loans	25,341,000	20,662,000
Unallocated Financing Receivables [Member] | Loans, Excluding Acquired Loans [Member]
Past Due
Current	25,341,000	20,662,000
Loans	25,341,000	20,662,000
90 Days Past Due & Accruing
Unallocated Financing Receivables [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] | Loans, Excluding Acquired Loans [Member]
Past Due
Unallocated Financing Receivables [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Loans, Excluding Acquired Loans [Member]
Past Due

Note 5 - Loans and Allowance 59

Note 5 - Loans and Allowance for Loan Losses - Impaired Loans, Net of Government Guarantees and Excluding Loans Acquired, Segregated by Class of Loans (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Unpaid Contractual Principal Balance	$ 55,752,000		$ 55,752,000		$ 54,521,000
Recorded Investment With No Allowance	31,223,000		31,223,000		24,678,000
Recorded Investment With Allowance	20,586,000		20,586,000		19,018,000
Impaired Financing Receivable, Recorded Investment	51,809,000		51,809,000		43,696,000
Impaired Financing Receivable, Related Allowance	6,321,000		6,321,000		680,000
Average Investment in Impaired Loans	54,468,000	$ 42,121,000	52,504,000	$ 34,048,000
Interest Income Recognized	350,000	430,000	1,050,000	1,230,000
Consumer Portfolio Segment [Member]
Unpaid Contractual Principal Balance	4,295,000		4,295,000		2,209,000
Recorded Investment With No Allowance	4,153,000		4,153,000		2,170,000
Recorded Investment With Allowance					3,000
Impaired Financing Receivable, Recorded Investment	4,153,000		4,153,000		2,173,000
Impaired Financing Receivable, Related Allowance					1,000
Average Investment in Impaired Loans	3,597,000	1,763,000	3,003,000	1,222,000
Interest Income Recognized	35,000	14,000	76,000	42,000
Consumer Portfolio Segment [Member] | Credit Card Receivable [Member]
Unpaid Contractual Principal Balance	273,000		273,000		373,000
Recorded Investment With No Allowance	273,000		273,000		373,000
Recorded Investment With Allowance
Impaired Financing Receivable, Recorded Investment	273,000		273,000		373,000
Impaired Financing Receivable, Related Allowance
Average Investment in Impaired Loans	283,000	439,000	292,000	340,000
Interest Income Recognized	12,000		23,000	10,000
Consumer Portfolio Segment [Member] | Other Loans [Member]
Unpaid Contractual Principal Balance	4,022,000		4,022,000		1,836,000
Recorded Investment With No Allowance	3,880,000		3,880,000		1,797,000
Recorded Investment With Allowance					3,000
Impaired Financing Receivable, Recorded Investment	3,880,000		3,880,000		1,800,000
Impaired Financing Receivable, Related Allowance					1,000
Average Investment in Impaired Loans	3,314,000	1,324,000	2,711,000	882,000
Interest Income Recognized	23,000	14,000	53,000	32,000
Commercial Real Estate Portfolio Segment [Member]
Unpaid Contractual Principal Balance	35,499,000		35,499,000		38,238,000
Recorded Investment With No Allowance	21,206,000		21,206,000		18,559,000
Recorded Investment With Allowance	12,474,000		12,474,000		11,442,000
Impaired Financing Receivable, Recorded Investment	33,680,000		33,680,000		30,001,000
Impaired Financing Receivable, Related Allowance	2,325,000		2,325,000		417,000
Average Investment in Impaired Loans	34,766,000	34,352,000	34,913,000	28,567,000
Interest Income Recognized	223,000	341,000	687,000	1,034,000
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member]
Unpaid Contractual Principal Balance	2,652,000		2,652,000		4,275,000
Recorded Investment With No Allowance	1,496,000		1,496,000		1,038,000
Recorded Investment With Allowance	907,000		907,000		2,374,000
Impaired Financing Receivable, Recorded Investment	2,403,000		2,403,000		3,412,000
Impaired Financing Receivable, Related Allowance	220,000		220,000		156,000
Average Investment in Impaired Loans	2,582,000	4,474,000	2,828,000	4,692,000
Interest Income Recognized	17,000	44,000	56,000	170,000
Commercial Real Estate Portfolio Segment [Member] | Single Family Residential Loans [Member]
Unpaid Contractual Principal Balance	13,782,000		13,782,000		12,970,000
Recorded Investment With No Allowance	12,450,000		12,450,000		10,630,000
Recorded Investment With Allowance	584,000		584,000		1,753,000
Impaired Financing Receivable, Recorded Investment	13,034,000		13,034,000		12,383,000
Impaired Financing Receivable, Related Allowance	53,000		53,000		162,000
Average Investment in Impaired Loans	12,878,000	10,897,000	12,772,000	8,762,000
Interest Income Recognized	85,000	119,000	251,000	317,000
Commercial Real Estate Portfolio Segment [Member] | Other Commercial Loans [Member]
Unpaid Contractual Principal Balance	19,065,000		19,065,000		20,993,000
Recorded Investment With No Allowance	7,260,000		7,260,000		6,891,000
Recorded Investment With Allowance	10,983,000		10,983,000		7,315,000
Impaired Financing Receivable, Recorded Investment	18,243,000		18,243,000		14,206,000
Impaired Financing Receivable, Related Allowance	2,052,000		2,052,000		99,000
Average Investment in Impaired Loans	19,306,000	18,981,000	19,313,000	15,113,000
Interest Income Recognized	121,000	178,000	380,000	547,000
Commercial Portfolio Segment [Member]
Unpaid Contractual Principal Balance	15,958,000		15,958,000		14,074,000
Recorded Investment With No Allowance	5,864,000		5,864,000		3,949,000
Recorded Investment With Allowance	8,112,000		8,112,000		7,573,000
Impaired Financing Receivable, Recorded Investment	13,976,000		13,976,000		11,522,000
Impaired Financing Receivable, Related Allowance	3,996,000		3,996,000		262,000
Average Investment in Impaired Loans	16,105,000	6,006,000	14,588,000	4,259,000
Interest Income Recognized	92,000	75,000	287,000	154,000
Commercial Portfolio Segment [Member] | Commercial Loans [Member]
Unpaid Contractual Principal Balance	13,774,000		13,774,000		11,848,000
Recorded Investment With No Allowance	4,805,000		4,805,000		2,734,000
Recorded Investment With Allowance	8,112,000		8,112,000		7,573,000
Impaired Financing Receivable, Recorded Investment	12,917,000		12,917,000		10,307,000
Impaired Financing Receivable, Related Allowance	3,996,000		3,996,000		262,000
Average Investment in Impaired Loans	14,543,000	4,402,000	12,943,000	3,256,000
Interest Income Recognized	84,000	59,000	255,000	118,000
Commercial Portfolio Segment [Member] | Agricultural Loans [Member]
Unpaid Contractual Principal Balance	2,184,000		2,184,000		2,226,000
Recorded Investment With No Allowance	1,059,000		1,059,000		1,215,000
Recorded Investment With Allowance
Impaired Financing Receivable, Recorded Investment	1,059,000		1,059,000		1,215,000
Impaired Financing Receivable, Related Allowance
Average Investment in Impaired Loans	1,562,000	1,604,000	1,645,000	1,003,000
Interest Income Recognized	$ 8,000	$ 16,000	$ 32,000	$ 36,000

Note 5 - Loans and Allowance 60

Note 5 - Loans and Allowance for Loan Losses - Troubled Debt Restructurings, Excluding Loans Acquired, Segregated by Class of Loans (Details) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2017USD ($)	Sep. 30, 2016	Sep. 30, 2017USD ($)	Sep. 30, 2016	Dec. 31, 2016USD ($)
Troubled debt, number	1	21	13	67
Commercial Real Estate Portfolio Segment [Member]
Troubled debt, number		15	3	49
Commercial Real Estate Portfolio Segment [Member] | Single Family Residential Loans [Member]
Troubled debt, number		13	1	22
Commercial Real Estate Portfolio Segment [Member] | Commercial Loans [Member]
Troubled debt, number	1
Commercial Portfolio Segment [Member]
Troubled debt, number	1	5	10	16
Commercial Portfolio Segment [Member] | Commercial Loans [Member]
Troubled debt, number		5	10	16
Consumer Portfolio Segment [Member]
Troubled debt, number		1		2
Consumer Portfolio Segment [Member] | Other Loans [Member]
Troubled debt, number		1		2
Loans, Excluding Acquired Loans [Member]
Troubled debt, number			40		79
Troubled debt, balance	$ 17,383		$ 17,383		$ 14,174
Loans, Excluding Acquired Loans [Member] | Commercial Real Estate Portfolio Segment [Member]
Troubled debt, number			27		58
Troubled debt, balance	14,443		$ 14,443		$ 12,091
Loans, Excluding Acquired Loans [Member] | Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member]
Troubled debt, number			1		1
Troubled debt, balance	432		$ 432		$ 18
Loans, Excluding Acquired Loans [Member] | Commercial Real Estate Portfolio Segment [Member] | Single Family Residential Loans [Member]
Troubled debt, number			18		32
Troubled debt, balance	982		$ 982		$ 2,245
Loans, Excluding Acquired Loans [Member] | Commercial Real Estate Portfolio Segment [Member] | Other Loans [Member]
Troubled debt, number			8		25
Troubled debt, balance	13,029		$ 13,029		$ 9,828
Loans, Excluding Acquired Loans [Member] | Commercial Portfolio Segment [Member]
Troubled debt, number			13		20
Troubled debt, balance	2,940		$ 2,940		$ 2,080
Loans, Excluding Acquired Loans [Member] | Commercial Portfolio Segment [Member] | Commercial Loans [Member]
Troubled debt, number			13		20
Troubled debt, balance	2,940		$ 2,940		$ 2,080
Loans, Excluding Acquired Loans [Member] | Consumer Portfolio Segment [Member]
Troubled debt, number					1
Troubled debt, balance					$ 3
Loans, Excluding Acquired Loans [Member] | Consumer Portfolio Segment [Member] | Other Loans [Member]
Troubled debt, number					1
Troubled debt, balance					$ 3
Loans, Excluding Acquired Loans [Member] | Performing Financial Instruments [Member]
Troubled debt, number			16		41
Troubled debt, balance	9,212		$ 9,212		$ 10,998
Loans, Excluding Acquired Loans [Member] | Performing Financial Instruments [Member] | Commercial Real Estate Portfolio Segment [Member]
Troubled debt, number			9		26
Troubled debt, balance	7,021		$ 7,021		$ 9,215
Loans, Excluding Acquired Loans [Member] | Performing Financial Instruments [Member] | Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member]
Troubled debt, number
Troubled debt, balance
Loans, Excluding Acquired Loans [Member] | Performing Financial Instruments [Member] | Commercial Real Estate Portfolio Segment [Member] | Single Family Residential Loans [Member]
Troubled debt, number			4		3
Troubled debt, balance	144		$ 144		$ 167
Loans, Excluding Acquired Loans [Member] | Performing Financial Instruments [Member] | Commercial Real Estate Portfolio Segment [Member] | Other Loans [Member]
Troubled debt, number			5		23
Troubled debt, balance	6,877		$ 6,877		$ 9,048
Loans, Excluding Acquired Loans [Member] | Performing Financial Instruments [Member] | Commercial Portfolio Segment [Member]
Troubled debt, number			7		15
Troubled debt, balance	2,191		$ 2,191		$ 1,783
Loans, Excluding Acquired Loans [Member] | Performing Financial Instruments [Member] | Commercial Portfolio Segment [Member] | Commercial Loans [Member]
Troubled debt, number			7		15
Troubled debt, balance	2,191		$ 2,191		$ 1,783
Loans, Excluding Acquired Loans [Member] | Performing Financial Instruments [Member] | Consumer Portfolio Segment [Member]
Troubled debt, number
Troubled debt, balance
Loans, Excluding Acquired Loans [Member] | Performing Financial Instruments [Member] | Consumer Portfolio Segment [Member] | Other Loans [Member]
Troubled debt, number
Troubled debt, balance
Loans, Excluding Acquired Loans [Member] | Nonperforming Financial Instruments [Member]
Troubled debt, number			24		38
Troubled debt, balance	8,171		$ 8,171		$ 3,176
Loans, Excluding Acquired Loans [Member] | Nonperforming Financial Instruments [Member] | Commercial Real Estate Portfolio Segment [Member]
Troubled debt, number			18		32
Troubled debt, balance	7,422		$ 7,422		$ 2,876
Loans, Excluding Acquired Loans [Member] | Nonperforming Financial Instruments [Member] | Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member]
Troubled debt, number			1		1
Troubled debt, balance	432		$ 432		$ 18
Loans, Excluding Acquired Loans [Member] | Nonperforming Financial Instruments [Member] | Commercial Real Estate Portfolio Segment [Member] | Single Family Residential Loans [Member]
Troubled debt, number			14		29
Troubled debt, balance	838		$ 838		$ 2,078
Loans, Excluding Acquired Loans [Member] | Nonperforming Financial Instruments [Member] | Commercial Real Estate Portfolio Segment [Member] | Other Loans [Member]
Troubled debt, number			3		2
Troubled debt, balance	6,152		$ 6,152		$ 780
Loans, Excluding Acquired Loans [Member] | Nonperforming Financial Instruments [Member] | Commercial Portfolio Segment [Member]
Troubled debt, number			6		5
Troubled debt, balance	749		$ 749		$ 297
Loans, Excluding Acquired Loans [Member] | Nonperforming Financial Instruments [Member] | Commercial Portfolio Segment [Member] | Commercial Loans [Member]
Troubled debt, number			6		5
Troubled debt, balance	$ 749		$ 749		$ 297
Loans, Excluding Acquired Loans [Member] | Nonperforming Financial Instruments [Member] | Consumer Portfolio Segment [Member]
Troubled debt, number					1
Troubled debt, balance					$ 3
Loans, Excluding Acquired Loans [Member] | Nonperforming Financial Instruments [Member] | Consumer Portfolio Segment [Member] | Other Loans [Member]
Troubled debt, number					1
Troubled debt, balance					$ 3

Note 5 - Loans and Allowance 61

Note 5 - Loans and Allowance for Loan Losses - Loans Restructured as TDRs, Excluding Loans Acquired, Segregated by Class of Loans (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2017USD ($)	Sep. 30, 2016USD ($)	Sep. 30, 2017USD ($)	Sep. 30, 2016USD ($)
Number of Loans	1	21	13	67
Balance Prior to TDR	$ 608,000	$ 3,011,000	$ 9,237,000	$ 13,372,000
Balance	607,000	2,923,000	9,225,000	13,222,000
Financial Impact on Date of Restructure			33,000
Extended Maturity [Member]
Balance	607,000	2,155,000	9,186,000	11,536,000
Contractual Interest Rate Reduction [Member]
Balance		$ 768,000	$ 39,000	$ 1,686,000
Commercial Real Estate Portfolio Segment [Member]
Number of Loans		15	3	49
Balance Prior to TDR		$ 1,577,000	$ 7,818,000	$ 11,335,000
Balance		1,528,000	7,818,000	11,252,000
Financial Impact on Date of Restructure			33,000
Commercial Real Estate Portfolio Segment [Member] | Extended Maturity [Member]
Balance		760,000	7,818,000	9,566,000
Commercial Real Estate Portfolio Segment [Member] | Contractual Interest Rate Reduction [Member]
Balance		$ 768,000		$ 1,686,000
Commercial Real Estate Portfolio Segment [Member] | Commercial Loans [Member]
Number of Loans	1
Balance Prior to TDR	$ 608,000
Balance	607,000
Financial Impact on Date of Restructure
Commercial Real Estate Portfolio Segment [Member] | Commercial Loans [Member] | Extended Maturity [Member]
Balance	607,000
Commercial Real Estate Portfolio Segment [Member] | Commercial Loans [Member] | Contractual Interest Rate Reduction [Member]
Balance
Commercial Real Estate Portfolio Segment [Member] | Single Family Residential Loans [Member]
Number of Loans		13	1	22
Balance Prior to TDR		$ 742,000	$ 456,000	$ 1,538,000
Balance		694,000	456,000	1,487,000
Financial Impact on Date of Restructure
Commercial Real Estate Portfolio Segment [Member] | Single Family Residential Loans [Member] | Extended Maturity [Member]
Balance		694,000	456,000	933,000
Commercial Real Estate Portfolio Segment [Member] | Single Family Residential Loans [Member] | Contractual Interest Rate Reduction [Member]
Balance				$ 554,000
Commercial Real Estate Portfolio Segment [Member] | Other Commercial Loans [Member]
Number of Loans		2	2	27
Balance Prior to TDR		$ 835,000	$ 7,362,000	$ 9,797,000
Balance		834,000	7,362,000	9,765,000
Financial Impact on Date of Restructure			33,000
Commercial Real Estate Portfolio Segment [Member] | Other Commercial Loans [Member] | Extended Maturity [Member]
Balance		66,000	7,362,000	8,633,000
Commercial Real Estate Portfolio Segment [Member] | Other Commercial Loans [Member] | Contractual Interest Rate Reduction [Member]
Balance		$ 768,000		$ 1,132,000
Commercial Portfolio Segment [Member]
Number of Loans	1	5	10	16
Balance Prior to TDR	$ 608,000	$ 1,387,000	$ 1,419,000	$ 1,987,000
Balance	607,000	1,387,000	1,407,000	1,959,000
Financial Impact on Date of Restructure
Commercial Portfolio Segment [Member] | Extended Maturity [Member]
Balance	607,000	1,387,000	1,368,000	1,959,000
Commercial Portfolio Segment [Member] | Contractual Interest Rate Reduction [Member]
Balance			$ 39,000
Commercial Portfolio Segment [Member] | Commercial Loans [Member]
Number of Loans		5	10	16
Balance Prior to TDR		$ 1,387,000	$ 1,419,000	$ 1,987,000
Balance		1,387,000	1,407,000	1,959,000
Financial Impact on Date of Restructure
Commercial Portfolio Segment [Member] | Commercial Loans [Member] | Extended Maturity [Member]
Balance		1,387,000	1,368,000	1,959,000
Commercial Portfolio Segment [Member] | Commercial Loans [Member] | Contractual Interest Rate Reduction [Member]
Balance			$ 39,000
Consumer Portfolio Segment [Member]
Number of Loans		1		2
Balance Prior to TDR		$ 47,000		$ 50,000
Balance		8,000		11,000
Financial Impact on Date of Restructure
Consumer Portfolio Segment [Member] | Extended Maturity [Member]
Balance		8,000		11,000
Consumer Portfolio Segment [Member] | Contractual Interest Rate Reduction [Member]
Balance
Consumer Portfolio Segment [Member] | Other Loans [Member]
Number of Loans		1		2
Balance Prior to TDR		$ 47,000		$ 50,000
Balance		8,000		11,000
Financial Impact on Date of Restructure
Consumer Portfolio Segment [Member] | Other Loans [Member] | Extended Maturity [Member]
Balance		8,000		11,000
Consumer Portfolio Segment [Member] | Other Loans [Member] | Contractual Interest Rate Reduction [Member]
Balance

Note 5 - Loans and Allowance 62

Note 5 - Loans and Allowance for Loan Losses - Loans by Credit Risk Rating, Segregated by Class of Loans (Details) - USD ($) $ in Thousands		Sep. 30, 2017	Dec. 31, 2016
Financing Receivables		$ 6,303,351	$ 5,632,890
Loans acquired, net of discount and allowance	[1]	1,092,039	1,305,683
Loans acquired	[1]	1,092,039	1,305,683
Pass [Member]
Financing Receivables		6,140,412	5,433,036
Loans acquired, net of discount and allowance		1,051,889	1,217,886
Loans acquired		1,051,889	1,217,886
Special Mention [Member]
Financing Receivables		32,333	33,865
Loans acquired, net of discount and allowance		9,673	22,181
Loans acquired		9,673	22,181
Substandard [Member]
Financing Receivables		129,662	164,251
Loans acquired, net of discount and allowance		29,862	64,075
Loans acquired		29,862	64,075
Doubtful [Member]
Financing Receivables		944	1,715
Loans acquired, net of discount and allowance		615	1,541
Loans acquired		615	1,541
Unlikely to be Collected Financing Receivable [Member]
Financing Receivables			23
Loans acquired, net of discount and allowance
Loans acquired
Consumer Portfolio Segment [Member]
Financing Receivables		494,262	488,563
Consumer Portfolio Segment [Member] | Pass [Member]
Financing Receivables		490,041	485,575
Consumer Portfolio Segment [Member] | Special Mention [Member]
Financing Receivables			26
Consumer Portfolio Segment [Member] | Substandard [Member]
Financing Receivables		4,221	2,962
Consumer Portfolio Segment [Member] | Doubtful [Member]
Financing Receivables
Consumer Portfolio Segment [Member] | Unlikely to be Collected Financing Receivable [Member]
Financing Receivables
Consumer Portfolio Segment [Member] | Credit Card Receivable [Member]
Financing Receivables		176,316	184,591
Consumer Portfolio Segment [Member] | Credit Card Receivable [Member] | Pass [Member]
Financing Receivables		176,316	183,943
Consumer Portfolio Segment [Member] | Credit Card Receivable [Member] | Special Mention [Member]
Financing Receivables
Consumer Portfolio Segment [Member] | Credit Card Receivable [Member] | Substandard [Member]
Financing Receivables			648
Consumer Portfolio Segment [Member] | Credit Card Receivable [Member] | Doubtful [Member]
Financing Receivables
Consumer Portfolio Segment [Member] | Credit Card Receivable [Member] | Unlikely to be Collected Financing Receivable [Member]
Financing Receivables
Consumer Portfolio Segment [Member] | Other Loans [Member]
Financing Receivables		317,946	303,972
Consumer Portfolio Segment [Member] | Other Loans [Member] | Pass [Member]
Financing Receivables		313,725	301,632
Consumer Portfolio Segment [Member] | Other Loans [Member] | Special Mention [Member]
Financing Receivables			26
Consumer Portfolio Segment [Member] | Other Loans [Member] | Substandard [Member]
Financing Receivables		4,221	2,314
Consumer Portfolio Segment [Member] | Other Loans [Member] | Doubtful [Member]
Financing Receivables
Consumer Portfolio Segment [Member] | Other Loans [Member] | Unlikely to be Collected Financing Receivable [Member]
Financing Receivables
Commercial Real Estate Portfolio Segment [Member]
Financing Receivables		3,794,900	3,028,079
Commercial Real Estate Portfolio Segment [Member] | Pass [Member]
Financing Receivables		3,705,982	2,943,890
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member]
Financing Receivables		16,367	10,996
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member]
Financing Receivables		72,246	73,019
Commercial Real Estate Portfolio Segment [Member] | Doubtful [Member]
Financing Receivables		305	174
Commercial Real Estate Portfolio Segment [Member] | Unlikely to be Collected Financing Receivable [Member]
Financing Receivables
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member]
Financing Receivables		515,274	336,759
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Pass [Member]
Financing Receivables		507,128	330,080
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Special Mention [Member]
Financing Receivables		2,085	98
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Substandard [Member]
Financing Receivables		6,045	6,565
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Doubtful [Member]
Financing Receivables		16	16
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Unlikely to be Collected Financing Receivable [Member]
Financing Receivables
Commercial Real Estate Portfolio Segment [Member] | Single Family Residential Loans [Member]
Financing Receivables		1,048,403	904,245
Commercial Real Estate Portfolio Segment [Member] | Single Family Residential Loans [Member] | Pass [Member]
Financing Receivables		1,022,886	875,603
Commercial Real Estate Portfolio Segment [Member] | Single Family Residential Loans [Member] | Special Mention [Member]
Financing Receivables		2,553	4,024
Commercial Real Estate Portfolio Segment [Member] | Single Family Residential Loans [Member] | Substandard [Member]
Financing Receivables		22,675	24,460
Commercial Real Estate Portfolio Segment [Member] | Single Family Residential Loans [Member] | Doubtful [Member]
Financing Receivables		289	158
Commercial Real Estate Portfolio Segment [Member] | Single Family Residential Loans [Member] | Unlikely to be Collected Financing Receivable [Member]
Financing Receivables
Commercial Real Estate Portfolio Segment [Member] | Other Commercial Loans [Member]
Financing Receivables		2,231,223	1,787,075
Commercial Real Estate Portfolio Segment [Member] | Other Commercial Loans [Member] | Pass [Member]
Financing Receivables		2,175,968	1,738,207
Commercial Real Estate Portfolio Segment [Member] | Other Commercial Loans [Member] | Special Mention [Member]
Financing Receivables		11,729	6,874
Commercial Real Estate Portfolio Segment [Member] | Other Commercial Loans [Member] | Substandard [Member]
Financing Receivables		43,526	41,994
Commercial Real Estate Portfolio Segment [Member] | Other Commercial Loans [Member] | Doubtful [Member]
Financing Receivables
Commercial Real Estate Portfolio Segment [Member] | Other Commercial Loans [Member] | Unlikely to be Collected Financing Receivable [Member]
Financing Receivables
Commercial Portfolio Segment [Member]
Financing Receivables		896,809	789,903
Commercial Portfolio Segment [Member] | Pass [Member]
Financing Receivables		867,159	765,023
Commercial Portfolio Segment [Member] | Special Mention [Member]
Financing Receivables		6,293	662
Commercial Portfolio Segment [Member] | Substandard [Member]
Financing Receivables		23,333	24,195
Commercial Portfolio Segment [Member] | Doubtful [Member]
Financing Receivables		24
Commercial Portfolio Segment [Member] | Unlikely to be Collected Financing Receivable [Member]
Financing Receivables			23
Commercial Portfolio Segment [Member] | Commercial Loans [Member]
Financing Receivables		688,960	639,525
Commercial Portfolio Segment [Member] | Commercial Loans [Member] | Pass [Member]
Financing Receivables		661,635	616,805
Commercial Portfolio Segment [Member] | Commercial Loans [Member] | Special Mention [Member]
Financing Receivables		6,267	558
Commercial Portfolio Segment [Member] | Commercial Loans [Member] | Substandard [Member]
Financing Receivables		21,057	22,162
Commercial Portfolio Segment [Member] | Commercial Loans [Member] | Doubtful [Member]
Financing Receivables		1
Commercial Portfolio Segment [Member] | Commercial Loans [Member] | Unlikely to be Collected Financing Receivable [Member]
Financing Receivables
Commercial Portfolio Segment [Member] | Agricultural Loans [Member]
Financing Receivables		207,849	150,378
Commercial Portfolio Segment [Member] | Agricultural Loans [Member] | Pass [Member]
Financing Receivables		205,524	148,218
Commercial Portfolio Segment [Member] | Agricultural Loans [Member] | Special Mention [Member]
Financing Receivables		26	104
Commercial Portfolio Segment [Member] | Agricultural Loans [Member] | Substandard [Member]
Financing Receivables		2,276	2,033
Commercial Portfolio Segment [Member] | Agricultural Loans [Member] | Doubtful [Member]
Financing Receivables		23
Commercial Portfolio Segment [Member] | Agricultural Loans [Member] | Unlikely to be Collected Financing Receivable [Member]
Financing Receivables			23
Unallocated Financing Receivables [Member]
Financing Receivables		25,341	20,662
Unallocated Financing Receivables [Member] | Pass [Member]
Financing Receivables		25,341	20,662
Unallocated Financing Receivables [Member] | Special Mention [Member]
Financing Receivables
Unallocated Financing Receivables [Member] | Substandard [Member]
Financing Receivables
Unallocated Financing Receivables [Member] | Doubtful [Member]
Financing Receivables
Unallocated Financing Receivables [Member] | Unlikely to be Collected Financing Receivable [Member]
Financing Receivables
[1]	See Note 6, Loans Acquired, for segregation of loans acquired by loan class.

Note 5 - Loans and Allowance 63

Note 5 - Loans and Allowance for Loan Losses - Activity in the Allowance for Loan Losses, by Portfolio Segment, for the Current Year (Details) - USD ($)	3 Months Ended				9 Months Ended
	Sep. 30, 2017		Sep. 30, 2016		Sep. 30, 2017		Sep. 30, 2016		Dec. 31, 2016
Balance, beginning of period					$ 36,286,000
Provision for loan losses	$ 5,462,000		$ 8,294,000		16,792,000		$ 15,733,000
Balance, end of period	42,717,000				42,717,000
Loans, Excluding Acquired Loans [Member]
Balance, beginning of period	41,379,000	[1]	33,523,000	[2]	36,286,000	[3]	31,351,000	[2]
Provision for loan losses	5,462,000	[4]	8,079,000	[5]	15,327,000	[4]	15,211,000	[5]
Charge-offs	(5,174,000)		(7,880,000)		(12,295,000)		(14,135,000)
Recoveries	1,050,000		372,000		3,399,000		1,667,000
Net charge-offs	(4,124,000)		(7,508,000)		(8,896,000)		(12,468,000)
Balance, end of period	42,717,000	[1]	34,094,000	[2]	42,717,000	[1]	34,094,000	[2]
Loans individually evaluated for impairment	6,321,000		580,000		6,321,000		580,000		$ 680,000
Loans collectively evaluated for impairment	36,396,000		33,514,000		36,396,000		33,514,000		35,606,000
Loans, Excluding Acquired Loans [Member] | Commercial Portfolio Segment [Member]
Balance, beginning of period	8,105,000	[1]	7,832,000	[2]	7,739,000	[3]	5,985,000	[2]
Provision for loan losses	2,310,000	[4]	680,000	[5]	3,255,000	[4]	4,961,000	[5]
Charge-offs	(2,442,000)		(284,000)		(3,083,000)		(3,043,000)
Recoveries	21,000		12,000		83,000		337,000
Net charge-offs	(2,421,000)		(272,000)		(3,000,000)		(2,706,000)
Balance, end of period	7,994,000	[1]	8,240,000	[2]	7,994,000	[1]	8,240,000	[2]
Loans individually evaluated for impairment	3,996,000		64,000		3,996,000		64,000		262,000
Loans collectively evaluated for impairment	3,998,000		8,176,000		3,998,000		8,176,000		7,477,000
Loans, Excluding Acquired Loans [Member] | Commercial Real Estate Portfolio Segment [Member]
Balance, beginning of period	25,731,000	[1]	19,635,000	[2]	21,817,000	[3]	19,522,000	[2]
Provision for loan losses	2,150,000	[4]	6,066,000	[5]	7,984,000	[4]	7,009,000	[5]
Charge-offs	(896,000)		(6,297,000)		(3,264,000)		(7,350,000)
Recoveries	309,000		55,000		757,000		278,000
Net charge-offs	(587,000)		(6,242,000)		(2,507,000)		(7,072,000)
Balance, end of period	27,294,000	[1]	19,459,000	[2]	27,294,000	[1]	19,459,000	[2]
Loans individually evaluated for impairment	2,325,000		515,000		2,325,000		515,000		417,000
Loans collectively evaluated for impairment	24,969,000		18,944,000		24,969,000		18,944,000		21,400,000
Loans, Excluding Acquired Loans [Member] | Consumer Portfolio Segment [Member]
Balance, beginning of period	3,754,000	[1]	3,748,000	[2]	3,779,000	[3]	3,893,000	[2]
Provision for loan losses	761,000	[4]	501,000	[5]	2,168,000	[4]	1,422,000	[5]
Charge-offs	(1,017,000)		(699,000)		(2,962,000)		(2,260,000)
Recoveries	275,000		199,000		788,000		694,000
Net charge-offs	(742,000)		(500,000)		(2,174,000)		(1,566,000)
Balance, end of period	3,773,000	[1]	3,749,000	[2]	3,773,000	[1]	3,749,000	[2]
Loans individually evaluated for impairment
Loans collectively evaluated for impairment	3,773,000		3,749,000		3,773,000		3,749,000		3,779,000
Loans, Excluding Acquired Loans [Member] | Unallocated Financing Receivables [Member]
Balance, beginning of period	3,789,000	[1]	2,308,000	[2]	2,951,000	[3]	1,951,000	[2]
Provision for loan losses	241,000	[4]	832,000	[5]	1,920,000	[4]	1,819,000	[5]
Charge-offs	(819,000)		(600,000)		(2,986,000)		(1,482,000)
Recoveries	445,000		106,000		1,771,000		358,000
Net charge-offs	(374,000)		(494,000)		(1,215,000)		(1,124,000)
Balance, end of period	3,656,000	[1]	2,646,000	[2]	3,656,000	[1]	2,646,000	[2]
Loans individually evaluated for impairment			1,000				1,000		1,000
Loans collectively evaluated for impairment	$ 3,656,000		$ 2,645,000		$ 3,656,000		$ 2,645,000		$ 2,950,000
[1]	Allowance for loan losses at September 30, 2017 includes $391,000 allowance for loans acquired (not shown in the table above). Allowance for loan losses at December 31, 2016 includes $954,000 allowance for loans acquired. The total allowance for loan losses at September 30, 2017, June 30, 2017 and December 31, 2016 was $43,108,000, $41,770,000 and $37,240,000, respectively.
[2]	Allowance for loan losses at September 30, 2016, June 30, 2016 and December 31, 2015 includes $954,000 allowance for loans acquired. The total allowance for loan losses at September 30, 2016, June 30, 2016 and December 31, 2015 was $35,048,000, $34,477,000 and $32,305,000, respectively.
[3]	Allowance for loan losses at December 31, 2016 includes $954,000 allowance for loans acquired (not shown in the table above). The total allowance for loan losses December 31, 2016 was $37,240,000.
[4]	Provision for loan losses of $1,464,000 attributable to loans acquired was excluded from this table for the nine months ended September 30, 2017 (total provision for loan losses for the three and nine months ended September 30, 2017 was $5,462,000 and $16,792,000). There was $2.0 million in charge-offs for loans acquired during the nine months ended September 30, 2017 resulting in an ending balance in the allowance related to loans acquired of $391,000.
[5]	Provision for loan losses of $215,000 and $522,000 attributable to loans acquired was excluded from this table for the three and nine months ended September 30, 2016 (total provision for loan losses for the three and nine months ended September 30, 2016 was $8,294,000 and $15,733,000). The $215,000 and $522,000 was subsequently charged-off, resulting in no change in the ending balance in the allowance related to loans acquired.

Note 5 - Loans and Allowance 64

Note 5 - Loans and Allowance for Loan Losses - Recorded Investment in Loans, Excluding Loans Acquired (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Balance, end of period	$ 6,303,351	$ 5,632,890
Commercial Portfolio Segment [Member]
Balance, end of period	896,809	789,903
Commercial Real Estate Portfolio Segment [Member]
Balance, end of period	3,794,900	3,028,079
Consumer Portfolio Segment [Member]
Balance, end of period	494,262	488,563
Unallocated Financing Receivables [Member]
Balance, end of period	25,341	20,662
Loans, Excluding Acquired Loans [Member]
Loans individually evaluated for impairment	51,809	43,696
Loans collectively evaluated for impairment	5,159,503	4,283,511
Balance, end of period	5,211,312	4,327,207
Loans, Excluding Acquired Loans [Member] | Commercial Portfolio Segment [Member]
Loans individually evaluated for impairment	13,976	11,522
Loans collectively evaluated for impairment	882,833	778,381
Balance, end of period	896,809	789,903
Loans, Excluding Acquired Loans [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans individually evaluated for impairment	33,680	30,001
Loans collectively evaluated for impairment	3,761,220	2,998,078
Balance, end of period	3,794,900	3,028,079
Loans, Excluding Acquired Loans [Member] | Consumer Portfolio Segment [Member]
Loans individually evaluated for impairment	273	373
Loans collectively evaluated for impairment	176,043	184,218
Balance, end of period	176,316	184,591
Loans, Excluding Acquired Loans [Member] | Unallocated Financing Receivables [Member]
Loans individually evaluated for impairment	3,880	1,800
Loans collectively evaluated for impairment	339,407	322,834
Balance, end of period	$ 343,287	$ 324,634

Note 6 - Loans Acquired (Detail

Note 6 - Loans Acquired (Details Textual) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Jun. 30, 2017	Dec. 31, 2016
Covered Purchased Impaired Loans Allowance	$ 391,000		$ 391,000			$ 954,000
Provision for Loan and Lease Losses	5,462,000	$ 8,294,000	16,792,000	$ 15,733,000
Acquired Loans [Member]
Non Covered Impaired Loans Allowance Reclassified	391,000		391,000			$ 954,000
Provision for Loan and Lease Losses	$ 0	215,000	$ 1,464,000	522,000
Hardeman County Investment Company, Inc. [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Loans, Net					$ 249,300,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Loans, Gross					254,300,000
Loans Acquired Discount					5,000,000
Hardeman County Investment Company, Inc. [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Loans, Net					2,300,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Loans, Gross					3,300,000
Loans Acquired Discount					$ 956,000
Citizens National Bank [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Loans, Net		340,100,000		340,100,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Loans, Gross		348,800,000		348,800,000
Loans Acquired Discount		8,700,000		8,700,000
Citizens National Bank [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Loans, Net		757,000		757,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Loans, Gross		1,600,000		1,600,000
Loans Acquired Discount		$ 848,000		$ 848,000

Note 6 - Loans Acquired - Carry

Note 6 - Loans Acquired - Carrying Value of all Acquired Impaired Loans (Details) - USD ($) $ in Thousands		Sep. 30, 2017	Dec. 31, 2016
Acquired loans	[1]	$ 1,092,039	$ 1,305,683
Consumer Portfolio Segment [Member]
Acquired loans		29,662	49,677
Commercial Real Estate Portfolio Segment [Member]
Acquired loans		978,309	1,170,871
Commercial Portfolio Segment [Member]
Acquired loans		84,068	85,135
Other Loans [Member] | Consumer Portfolio Segment [Member]
Acquired loans		29,662	49,677
Other Loans [Member] | Commercial Real Estate Portfolio Segment [Member]
Acquired loans		565,993	690,108
Construction Loans [Member] | Commercial Real Estate Portfolio Segment [Member]
Acquired loans		48,520	57,587
Single Family Residential Loans [Member] | Commercial Real Estate Portfolio Segment [Member]
Acquired loans		363,796	423,176
Commercial Loans [Member] | Commercial Portfolio Segment [Member]
Acquired loans		70,620	81,837
Agricultural Loans [Member] | Commercial Portfolio Segment [Member]
Acquired loans		$ 13,448	$ 3,298
[1]	Loans acquired are reported net of a $391,000 and $954,000 allowance at September 30, 2017 and December 31, 2016, respectively.

Note 6 - Loans Acquired - Nonac

Note 6 - Loans Acquired - Nonaccrual Acquired Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Loans in nonaccrual status	$ 54,438	$ 39,104
Acquired Loans [Member]
Loans in nonaccrual status	23,700	46,832
Consumer Portfolio Segment [Member]
Loans in nonaccrual status	4,153	2,166
Consumer Portfolio Segment [Member] | Other Loans [Member]
Loans in nonaccrual status	3,880	1,793
Consumer Portfolio Segment [Member] | Acquired Loans [Member]
Loans in nonaccrual status	315	456
Consumer Portfolio Segment [Member] | Acquired Loans [Member] | Other Loans [Member]
Loans in nonaccrual status	315	456
Commercial Real Estate Portfolio Segment [Member]
Loans in nonaccrual status	34,248	27,935
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member]
Loans in nonaccrual status	2,403	3,411
Commercial Real Estate Portfolio Segment [Member] | Single Family Residential Loans [Member]
Loans in nonaccrual status	13,034	12,139
Commercial Real Estate Portfolio Segment [Member] | Other Commercial Loans [Member]
Loans in nonaccrual status	18,811	12,385
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member]
Loans in nonaccrual status	21,006	43,372
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Construction Loans [Member]
Loans in nonaccrual status	1,905	7,961
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Single Family Residential Loans [Member]
Loans in nonaccrual status	11,840	13,366
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Other Commercial Loans [Member]
Loans in nonaccrual status	7,261	22,045
Commercial Portfolio Segment [Member]
Loans in nonaccrual status	16,037	9,003
Commercial Portfolio Segment [Member] | Commercial Loans [Member]
Loans in nonaccrual status	13,827	7,765
Commercial Portfolio Segment [Member] | Agricultural Loans [Member]
Loans in nonaccrual status	2,210	1,238
Commercial Portfolio Segment [Member] | Acquired Loans [Member]
Loans in nonaccrual status	2,379	3,004
Commercial Portfolio Segment [Member] | Acquired Loans [Member] | Commercial Loans [Member]
Loans in nonaccrual status	2,163	2,806
Commercial Portfolio Segment [Member] | Acquired Loans [Member] | Agricultural Loans [Member]
Loans in nonaccrual status	$ 216	$ 198

Note 6 - Loans Acquired - Age A

Note 6 - Loans Acquired - Age Analysis of Past Due Acquired Loans, Excluding Loans Covered by Loss Share (Details) - USD ($)	Sep. 30, 2017	Dec. 31, 2016
Loans	$ 6,303,000,000	$ 5,633,000,000
Acquired Loans [Member]
Past Due	15,391,000	37,940,000
Current	1,076,648,000	1,267,743,000
Loans	1,092,039,000	1,305,683,000
90 Days Past Due & Accruing	7,000	11,000
Acquired Loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member]
Past Due	6,183,000	12,668,000
Acquired Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Past Due	9,208,000	25,272,000
Consumer Portfolio Segment [Member]
Loans	494,262,000	488,563,000
Consumer Portfolio Segment [Member] | Other Loans [Member]
Loans	317,946,000	303,972,000
Consumer Portfolio Segment [Member] | Acquired Loans [Member]
Past Due	562,000	760,000
Current	29,100,000	48,917,000
Loans	29,662,000	49,677,000
90 Days Past Due & Accruing	7,000
Consumer Portfolio Segment [Member] | Acquired Loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member]
Past Due	401,000	571,000
Consumer Portfolio Segment [Member] | Acquired Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Past Due	161,000	189,000
Consumer Portfolio Segment [Member] | Acquired Loans [Member] | Other Loans [Member]
Past Due	562,000	760,000
Current	29,100,000	48,917,000
Loans	29,662,000	49,677,000
90 Days Past Due & Accruing	7,000
Consumer Portfolio Segment [Member] | Acquired Loans [Member] | Other Loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member]
Past Due	401,000	571,000
Consumer Portfolio Segment [Member] | Acquired Loans [Member] | Other Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Past Due	161,000	189,000
Commercial Real Estate Portfolio Segment [Member]
Loans	3,794,900,000	3,028,079,000
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member]
Loans	515,274,000	336,759,000
Commercial Real Estate Portfolio Segment [Member] | Single Family Residential Loans [Member]
Loans	1,048,403,000	904,245,000
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member]
Past Due	12,827,000	34,256,000
Current	965,482,000	1,136,615,000
Loans	978,309,000	1,170,871,000
90 Days Past Due & Accruing		11,000
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member]
Past Due	5,610,000	11,326,000
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Past Due	7,217,000	22,930,000
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Other Loans [Member]
Past Due	3,476,000	13,577,000
Current	562,517,000	676,531,000
Loans	565,993,000	690,108,000
90 Days Past Due & Accruing
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Other Loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member]
Past Due	806,000	2,836,000
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Other Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Past Due	2,670,000	10,741,000
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Construction Loans [Member]
Past Due	1,439,000	7,464,000
Current	47,081,000	50,123,000
Loans	48,520,000	57,587,000
90 Days Past Due & Accruing
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Construction Loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member]
Past Due	19,000	132,000
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Construction Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Past Due	1,420,000	7,332,000
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Single Family Residential Loans [Member]
Past Due	7,912,000	13,215,000
Current	355,884,000	409,961,000
Loans	363,796,000	423,176,000
90 Days Past Due & Accruing		11,000
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Single Family Residential Loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member]
Past Due	4,785,000	8,358,000
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Single Family Residential Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Past Due	3,127,000	4,857,000
Commercial Portfolio Segment [Member]
Loans	896,809,000	789,903,000
Commercial Portfolio Segment [Member] | Commercial Loans [Member]
Loans	688,960,000	639,525,000
Commercial Portfolio Segment [Member] | Agricultural Loans [Member]
Loans	207,849,000	150,378,000
Commercial Portfolio Segment [Member] | Acquired Loans [Member]
Past Due	2,002,000	2,924,000
Current	82,066,000	82,211,000
Loans	84,068,000	85,135,000
90 Days Past Due & Accruing
Commercial Portfolio Segment [Member] | Acquired Loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member]
Past Due	172,000	771,000
Commercial Portfolio Segment [Member] | Acquired Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Past Due	1,830,000	2,153,000
Commercial Portfolio Segment [Member] | Acquired Loans [Member] | Commercial Loans [Member]
Past Due	1,944,000	2,876,000
Current	68,676,000	78,961,000
Loans	70,620,000	81,837,000
90 Days Past Due & Accruing
Commercial Portfolio Segment [Member] | Acquired Loans [Member] | Commercial Loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member]
Past Due	156,000	723,000
Commercial Portfolio Segment [Member] | Acquired Loans [Member] | Commercial Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Past Due	1,788,000	2,153,000
Commercial Portfolio Segment [Member] | Acquired Loans [Member] | Agricultural Loans [Member]
Past Due	58,000	48,000
Current	13,390,000	3,250,000
Loans	13,448,000	3,298,000
90 Days Past Due & Accruing
Commercial Portfolio Segment [Member] | Acquired Loans [Member] | Agricultural Loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member]
Past Due	16,000	48,000
Commercial Portfolio Segment [Member] | Acquired Loans [Member] | Agricultural Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Past Due	$ 42,000

Note 6 - Loans Acquired - Summa

Note 6 - Loans Acquired - Summary of Acquired Loans, Excluding Loans Covered by Loss Share (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Acquired loans	$ 6,303,351	$ 5,632,890
Pass [Member]
Acquired loans	6,140,412	5,433,036
Special Mention [Member]
Acquired loans	32,333	33,865
Substandard [Member]
Acquired loans	129,662	164,251
Doubtful [Member]
Acquired loans	944	1,715
Unlikely to be Collected Financing Receivable [Member]
Acquired loans		23
Acquired Loans [Member]
Acquired loans	1,092,039	1,305,683
Acquired Loans [Member] | Pass [Member]
Acquired loans	1,051,889	1,217,886
Acquired Loans [Member] | Special Mention [Member]
Acquired loans	9,673	22,181
Acquired Loans [Member] | Substandard [Member]
Acquired loans	29,862	64,075
Acquired Loans [Member] | Doubtful [Member]
Acquired loans	615	1,541
Acquired Loans [Member] | Unlikely to be Collected Financing Receivable [Member]
Acquired loans
Consumer Portfolio Segment [Member]
Acquired loans	494,262	488,563
Consumer Portfolio Segment [Member] | Pass [Member]
Acquired loans	490,041	485,575
Consumer Portfolio Segment [Member] | Special Mention [Member]
Acquired loans		26
Consumer Portfolio Segment [Member] | Substandard [Member]
Acquired loans	4,221	2,962
Consumer Portfolio Segment [Member] | Doubtful [Member]
Acquired loans
Consumer Portfolio Segment [Member] | Unlikely to be Collected Financing Receivable [Member]
Acquired loans
Consumer Portfolio Segment [Member] | Other Loans [Member]
Acquired loans	317,946	303,972
Consumer Portfolio Segment [Member] | Other Loans [Member] | Pass [Member]
Acquired loans	313,725	301,632
Consumer Portfolio Segment [Member] | Other Loans [Member] | Special Mention [Member]
Acquired loans		26
Consumer Portfolio Segment [Member] | Other Loans [Member] | Substandard [Member]
Acquired loans	4,221	2,314
Consumer Portfolio Segment [Member] | Other Loans [Member] | Doubtful [Member]
Acquired loans
Consumer Portfolio Segment [Member] | Other Loans [Member] | Unlikely to be Collected Financing Receivable [Member]
Acquired loans
Consumer Portfolio Segment [Member] | Acquired Loans [Member]
Acquired loans	29,662	49,677
Consumer Portfolio Segment [Member] | Acquired Loans [Member] | Pass [Member]
Acquired loans	28,982	48,992
Consumer Portfolio Segment [Member] | Acquired Loans [Member] | Special Mention [Member]
Acquired loans		14
Consumer Portfolio Segment [Member] | Acquired Loans [Member] | Substandard [Member]
Acquired loans	680	671
Consumer Portfolio Segment [Member] | Acquired Loans [Member] | Doubtful [Member]
Acquired loans
Consumer Portfolio Segment [Member] | Acquired Loans [Member] | Unlikely to be Collected Financing Receivable [Member]
Acquired loans
Consumer Portfolio Segment [Member] | Acquired Loans [Member] | Other Loans [Member]
Acquired loans	29,662	49,677
Consumer Portfolio Segment [Member] | Acquired Loans [Member] | Other Loans [Member] | Pass [Member]
Acquired loans	28,982	48,992
Consumer Portfolio Segment [Member] | Acquired Loans [Member] | Other Loans [Member] | Special Mention [Member]
Acquired loans		14
Consumer Portfolio Segment [Member] | Acquired Loans [Member] | Other Loans [Member] | Substandard [Member]
Acquired loans	680	671
Consumer Portfolio Segment [Member] | Acquired Loans [Member] | Other Loans [Member] | Doubtful [Member]
Acquired loans
Consumer Portfolio Segment [Member] | Acquired Loans [Member] | Other Loans [Member] | Unlikely to be Collected Financing Receivable [Member]
Acquired loans
Commercial Real Estate Portfolio Segment [Member]
Acquired loans	3,794,900	3,028,079
Commercial Real Estate Portfolio Segment [Member] | Pass [Member]
Acquired loans	3,705,982	2,943,890
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member]
Acquired loans	16,367	10,996
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member]
Acquired loans	72,246	73,019
Commercial Real Estate Portfolio Segment [Member] | Doubtful [Member]
Acquired loans	305	174
Commercial Real Estate Portfolio Segment [Member] | Unlikely to be Collected Financing Receivable [Member]
Acquired loans
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member]
Acquired loans	515,274	336,759
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Pass [Member]
Acquired loans	507,128	330,080
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Special Mention [Member]
Acquired loans	2,085	98
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Substandard [Member]
Acquired loans	6,045	6,565
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Doubtful [Member]
Acquired loans	16	16
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Unlikely to be Collected Financing Receivable [Member]
Acquired loans
Commercial Real Estate Portfolio Segment [Member] | Single Family Residential Loans [Member]
Acquired loans	1,048,403	904,245
Commercial Real Estate Portfolio Segment [Member] | Single Family Residential Loans [Member] | Pass [Member]
Acquired loans	1,022,886	875,603
Commercial Real Estate Portfolio Segment [Member] | Single Family Residential Loans [Member] | Special Mention [Member]
Acquired loans	2,553	4,024
Commercial Real Estate Portfolio Segment [Member] | Single Family Residential Loans [Member] | Substandard [Member]
Acquired loans	22,675	24,460
Commercial Real Estate Portfolio Segment [Member] | Single Family Residential Loans [Member] | Doubtful [Member]
Acquired loans	289	158
Commercial Real Estate Portfolio Segment [Member] | Single Family Residential Loans [Member] | Unlikely to be Collected Financing Receivable [Member]
Acquired loans
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member]
Acquired loans	978,309	1,170,871
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Pass [Member]
Acquired loans	943,392	1,092,275
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Special Mention [Member]
Acquired loans	9,048	20,168
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Substandard [Member]
Acquired loans	25,254	56,893
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Doubtful [Member]
Acquired loans	615	1,535
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Unlikely to be Collected Financing Receivable [Member]
Acquired loans
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Other Loans [Member]
Acquired loans	565,994	690,108
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Other Loans [Member] | Pass [Member]
Acquired loans	549,853	641,018
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Other Loans [Member] | Special Mention [Member]
Acquired loans	6,200	17,384
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Other Loans [Member] | Substandard [Member]
Acquired loans	9,941	31,706
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Other Loans [Member] | Doubtful [Member]
Acquired loans
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Other Loans [Member] | Unlikely to be Collected Financing Receivable [Member]
Acquired loans
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Construction Loans [Member]
Acquired loans	48,520	57,587
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Construction Loans [Member] | Pass [Member]
Acquired loans	45,718	50,704
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Construction Loans [Member] | Special Mention [Member]
Acquired loans	1,314	88
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Construction Loans [Member] | Substandard [Member]
Acquired loans	1,488	6,795
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Construction Loans [Member] | Doubtful [Member]
Acquired loans
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Construction Loans [Member] | Unlikely to be Collected Financing Receivable [Member]
Acquired loans
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Single Family Residential Loans [Member]
Acquired loans	363,795	423,176
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Single Family Residential Loans [Member] | Pass [Member]
Acquired loans	347,821	400,553
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Single Family Residential Loans [Member] | Special Mention [Member]
Acquired loans	1,534	2,696
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Single Family Residential Loans [Member] | Substandard [Member]
Acquired loans	13,825	18,392
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Single Family Residential Loans [Member] | Doubtful [Member]
Acquired loans	615	1,535
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Single Family Residential Loans [Member] | Unlikely to be Collected Financing Receivable [Member]
Acquired loans
Commercial Portfolio Segment [Member]
Acquired loans	896,809	789,903
Commercial Portfolio Segment [Member] | Pass [Member]
Acquired loans	867,159	765,023
Commercial Portfolio Segment [Member] | Special Mention [Member]
Acquired loans	6,293	662
Commercial Portfolio Segment [Member] | Substandard [Member]
Acquired loans	23,333	24,195
Commercial Portfolio Segment [Member] | Doubtful [Member]
Acquired loans	24
Commercial Portfolio Segment [Member] | Unlikely to be Collected Financing Receivable [Member]
Acquired loans		23
Commercial Portfolio Segment [Member] | Commercial Loans [Member]
Acquired loans	688,960	639,525
Commercial Portfolio Segment [Member] | Commercial Loans [Member] | Pass [Member]
Acquired loans	661,635	616,805
Commercial Portfolio Segment [Member] | Commercial Loans [Member] | Special Mention [Member]
Acquired loans	6,267	558
Commercial Portfolio Segment [Member] | Commercial Loans [Member] | Substandard [Member]
Acquired loans	21,057	22,162
Commercial Portfolio Segment [Member] | Commercial Loans [Member] | Doubtful [Member]
Acquired loans	1
Commercial Portfolio Segment [Member] | Commercial Loans [Member] | Unlikely to be Collected Financing Receivable [Member]
Acquired loans
Commercial Portfolio Segment [Member] | Agricultural Loans [Member]
Acquired loans	207,849	150,378
Commercial Portfolio Segment [Member] | Agricultural Loans [Member] | Pass [Member]
Acquired loans	205,524	148,218
Commercial Portfolio Segment [Member] | Agricultural Loans [Member] | Special Mention [Member]
Acquired loans	26	104
Commercial Portfolio Segment [Member] | Agricultural Loans [Member] | Substandard [Member]
Acquired loans	2,276	2,033
Commercial Portfolio Segment [Member] | Agricultural Loans [Member] | Doubtful [Member]
Acquired loans	23
Commercial Portfolio Segment [Member] | Agricultural Loans [Member] | Unlikely to be Collected Financing Receivable [Member]
Acquired loans		23
Commercial Portfolio Segment [Member] | Acquired Loans [Member]
Acquired loans	84,068	85,135
Commercial Portfolio Segment [Member] | Acquired Loans [Member] | Pass [Member]
Acquired loans	79,515	76,619
Commercial Portfolio Segment [Member] | Acquired Loans [Member] | Special Mention [Member]
Acquired loans	625	1,999
Commercial Portfolio Segment [Member] | Acquired Loans [Member] | Substandard [Member]
Acquired loans	3,928	6,511
Commercial Portfolio Segment [Member] | Acquired Loans [Member] | Doubtful [Member]
Acquired loans		6
Commercial Portfolio Segment [Member] | Acquired Loans [Member] | Unlikely to be Collected Financing Receivable [Member]
Acquired loans
Commercial Portfolio Segment [Member] | Acquired Loans [Member] | Commercial Loans [Member]
Acquired loans	70,620	81,837
Commercial Portfolio Segment [Member] | Acquired Loans [Member] | Commercial Loans [Member] | Pass [Member]
Acquired loans	66,367	73,609
Commercial Portfolio Segment [Member] | Acquired Loans [Member] | Commercial Loans [Member] | Special Mention [Member]
Acquired loans	325	1,965
Commercial Portfolio Segment [Member] | Acquired Loans [Member] | Commercial Loans [Member] | Substandard [Member]
Acquired loans	3,928	6,257
Commercial Portfolio Segment [Member] | Acquired Loans [Member] | Commercial Loans [Member] | Doubtful [Member]
Acquired loans		6
Commercial Portfolio Segment [Member] | Acquired Loans [Member] | Commercial Loans [Member] | Unlikely to be Collected Financing Receivable [Member]
Acquired loans
Commercial Portfolio Segment [Member] | Acquired Loans [Member] | Agricultural Loans [Member]
Acquired loans	13,448	3,298
Commercial Portfolio Segment [Member] | Acquired Loans [Member] | Agricultural Loans [Member] | Pass [Member]
Acquired loans	13,148	3,010
Commercial Portfolio Segment [Member] | Acquired Loans [Member] | Agricultural Loans [Member] | Special Mention [Member]
Acquired loans	300	34
Commercial Portfolio Segment [Member] | Acquired Loans [Member] | Agricultural Loans [Member] | Substandard [Member]
Acquired loans		254
Commercial Portfolio Segment [Member] | Acquired Loans [Member] | Agricultural Loans [Member] | Doubtful [Member]
Acquired loans
Commercial Portfolio Segment [Member] | Acquired Loans [Member] | Agricultural Loans [Member] | Unlikely to be Collected Financing Receivable [Member]
Acquired loans

Note 6 - Loans Acquired - Impac

Note 6 - Loans Acquired - Impact of the Adjustments on the Company's Financial Results for the Following Reporting Periods (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Impact on net interest income and pre-tax income	$ 23	$ 65	$ 2,596	$ 1,240
Net impact, net of taxes	$ 14	$ 40	$ 1,578	$ 754

Note 6 - Loans Acquired - Chang

Note 6 - Loans Acquired - Changes in the Carrying Amount of the Accretable Yield for All Purchased Impaired and Non-impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Beginning balance	$ 766	$ 2,365	$ 1,655	$ 954
Additions
Accretable yield adjustments	52	171	2,698	3,245
Accretion	(408)	(555)	(3,943)	(2,218)
Payments and other reductions, net
Balance, ending	410	1,981	410	1,981
Beginning balance	8,448	20,663	17,802	23,469
Additions		1,614	2,388	1,614
Accretion	408	555	3,943	2,218
Payments and other reductions, net	(980)	(1,412)	(16,257)	(5,881)
Balance, ending	$ 7,876	$ 21,420	$ 7,876	$ 21,420

Note 7 - Goodwill and Other I72

Note 7 - Goodwill and Other Intangible Assets (Details Textual) - USD ($)	3 Months Ended			9 Months Ended	12 Months Ended
	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016	Sep. 30, 2017	Dec. 31, 2016	May 15, 2017	Sep. 09, 2016
Goodwill	$ 375,731,000		$ 348,505,000	$ 375,731,000	$ 348,505,000
Goodwill, Written off Related to Sale of Business Unit				4,100,000
Finite-Lived Intangible Assets, Period Increase (Decrease)	$ (1,300,000)
Goodwill, Impairment Loss				$ 0	$ 0
Minimum [Member]
Finite-Lived Intangible Asset, Useful Life				10 years
Maximum [Member]
Finite-Lived Intangible Asset, Useful Life				15 years
Core Deposit Premium [Member] | Minimum [Member]
Finite-Lived Intangible Asset, Useful Life				10 years
Core Deposit Premium [Member] | Maximum [Member]
Finite-Lived Intangible Asset, Useful Life				15 years
Hardeman County Investment Company, Inc. [Member]
Goodwill						$ 29,402,000
Finite-lived Intangible Assets Acquired		$ 830,000
Hardeman County Investment Company, Inc. [Member] | Core Deposit Premium [Member]
Finite-lived Intangible Assets Acquired		$ 7,800,000
Citizens National Bank [Member]
Goodwill							$ 23,376,000
Finite-lived Intangible Assets Acquired			591,000
Citizens National Bank [Member] | Core Deposit Premium [Member]
Finite-lived Intangible Assets Acquired			$ 5,100,000

Note 7 - Goodwill and Other I73

Note 7 - Goodwill and Other Intangible Assets - Goodwill, Core Deposit Premiums and Purchased Credit Card Relationships (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Goodwill	$ 375,731	$ 348,505
Core deposit premiums, net	55,501
Total goodwill and other intangible assets	431,232	401,464
Core Deposit Premium [Member]
Gross carrying amount	56,532	48,692
Accumulated amortization	(14,297)	(10,625)
Core deposit premiums, net	42,235	38,067
Purchased Credit Card Relationships [Member]
Gross carrying amount	2,068	2,068
Accumulated amortization	(1,654)	(1,344)
Core deposit premiums, net	414	724
Books of Business Intangible [Member]
Gross carrying amount	15,414	15,884
Accumulated amortization	(2,562)	(1,716)
Core deposit premiums, net	12,852	14,168
Other Intangible Assets [Member]
Core deposit premiums, net	$ 55,501	$ 52,959

Note 7 - Goodwill and Other I74

Note 7 - Goodwill and Other Intangible Assets - Amortization Expense (Details) $ in Thousands	Sep. 30, 2017USD ($)
Remainder of 2017	$ 1,665
2,018	6,557
2,019	6,247
2,020	6,234
2,021	6,172
Thereafter	28,626
Total	$ 55,501

Note 8 - Time Deposits (Details

Note 8 - Time Deposits (Details Textual) - USD ($)	Sep. 30, 2017	Dec. 31, 2016
Time Deposits, $100,000 or More	$ 635,765,000	$ 600,280,000
Time Deposits, at or Above FDIC Insurance Limit	$ 255,168,000	$ 193,596,000

Note 9 - Income Taxes (Details

Note 9 - Income Taxes (Details Textual) $ in Millions	9 Months Ended
	Sep. 30, 2017USD ($)
Earliest Tax Year [Member] | Domestic Tax Authority [Member]
Open Tax Year	2,014
Earliest Tax Year [Member] | State and Local Jurisdiction [Member]
Open Tax Year	2,014
Metropolitan [Member]
Operating Loss Carryforwards	$ 36.5

Note 9 - Income Taxes - Provisi

Note 9 - Income Taxes - Provision for Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Income taxes currently payable	$ 11,946	$ 10,327	$ 30,467	$ 33,139
Deferred income taxes	2,732	455	4,962	1,070
Provision for income taxes	$ 14,678	$ 10,782	$ 35,429	$ 34,209

Note 9 - Income Taxes - Tax Eff

Note 9 - Income Taxes - Tax Effects of Temporary Differences Related to Deferred Taxes Included in Other Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Loans acquired	$ 5,900	$ 7,986
Allowance for loan losses	16,841	14,754
Valuation of foreclosed assets	4,020	3,958
Tax NOLs from acquisition	12,642	13,077
Deferred compensation payable	2,983	2,785
Vacation compensation	1,828	1,740
Accrued equity and other compensation	5,138	6,367
Acquired securities	1,201	1,098
Other accrued liabilities	2,301	1,834
Unrealized loss on available-for-sale securities	6,708	9,559
Other	4,610	5,267
Gross deferred tax assets	64,172	68,425
Deferred tax liabilities:
Goodwill and other intangible amortization	(32,189)	(29,601)
Accumulated depreciation	(6,403)	(5,370)
Other	(7,369)	(5,877)
Gross deferred tax liabilities	(45,961)	(40,848)
Net deferred tax asset, included in other assets	$ 18,211	$ 27,577

Note 9 - Income Taxes - Reconci

Note 9 - Income Taxes - Reconciliation of Income Tax Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Computed at the statutory rate (35%)	$ 15,235	$ 11,974	$ 38,313	$ 36,418
State income taxes, net of federal tax benefit	342	21	1,117	1,390
Discrete items related to ASU 2016-09	5		(1,372)
Tax exempt interest income	(955)	(1,072)	(3,160)	(3,120)
Tax exempt earnings on BOLI	(178)	(146)	(616)	(665)
Merger related expenses	187	131	559	131
Federal tax credits	(397)	(890)	(1,190)	(943)
Other differences, net	439	764	1,778	998
Provision for income taxes	$ 14,678	$ 10,782	$ 35,429	$ 34,209

Note 9 - Income Taxes - Recon80

Note 9 - Income Taxes - Reconciliation of Income Tax Expense (Details) (Parentheticals)	9 Months Ended
	Sep. 30, 2016
Statutory rate	35.00%

Note 10 - Securities Sold Und81

Note 10 - Securities Sold Under Agreements to Repurchase (Details Textual) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Financial Assets Sold under Agreements to Repurchase, Gross Including Not Subject to Master Netting Arrangement	$ 121.4	$ 102.4

Note 10 - Securities Sold Und82

Note 10 - Securities Sold Under Agreements to Repurchase - Contractual Maturity of the Agreements (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Financial Assets Sold under Agreements to Repurchase, Gross Including Not Subject to Master Netting Arrangement	$ 121,400	$ 102,400
US Government Agencies Debt Securities [Member]
Financial Assets Sold under Agreements to Repurchase, Gross Including Not Subject to Master Netting Arrangement	121,352	102,404
Maturity Overnight [Member] | US Government Agencies Debt Securities [Member]
Financial Assets Sold under Agreements to Repurchase, Gross Including Not Subject to Master Netting Arrangement	121,352	101,647
Maturity Less than 30 Days [Member] | US Government Agencies Debt Securities [Member]
Financial Assets Sold under Agreements to Repurchase, Gross Including Not Subject to Master Netting Arrangement
Maturity 30 to 90 Days [Member] | US Government Agencies Debt Securities [Member]
Financial Assets Sold under Agreements to Repurchase, Gross Including Not Subject to Master Netting Arrangement
Maturity Greater than 90 Days [Member] | US Government Agencies Debt Securities [Member]
Financial Assets Sold under Agreements to Repurchase, Gross Including Not Subject to Master Netting Arrangement		$ 757

Note 11 - Other Borrowings an83

Note 11 - Other Borrowings and Subordinated Debentures (Details Textual) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Federal Home Loan Bank, Advances, Maturities Summary, Due in Next Twelve Months	$ 442	$ 180
Advances from Federal Home Loan Banks	478
Advances from Federal Home Loan Bank Available	1,075
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged	$ 2,014
Federal Home Loan Bank Advances [Member]
Debt Instrument, Term	1 year

Note 11 - Other Borrowings an84

Note 11 - Other Borrowings and Subordinated Debentures - Long-term Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Total other borrowings	$ 522,541	$ 273,159
Subordinated Debentures	67,418	60,397
Total other borrowings and subordinated debentures	589,959	333,556
Federal Home Loan Bank Advances [Member]
FHLB advances, net of discount, due 2017 to 2033, 1.15% to 7.37% secured by residential real estate loans	477,982	225,230
Note Payable Due 10/15/2020 [Member]
Notes payable, due 10/15/2020, 3.85%, fixed rate, unsecured	44,559	47,929
Trust Preferred Securities Due 12/30/2033 Floating Rate of 2.8% Above Three Month LIBOR 1 [Member]
Subordinated Debentures	20,620	20,620
Trust Preferred Securities Due 6/30/2035 [Member]
Subordinated Debentures	9,301	9,225
Trust Preferred Securities Due 9/15/2037 [Member]
Subordinated Debentures	10,246	10,130
Trust Preferred Securities Due 12/3/2033 [Member]
Subordinated Debentures	5,157	5,161
Trust Preferred Securities Due 12/13/2034 [Member]
Subordinated Debentures	5,137	5,105
Trust Preferred Securities, Due 6/6/2037 [Member]
Subordinated Debentures	10,255	10,156
Trust Preferred Securities, Due 12/15/2035 [Member]
Subordinated Debentures	$ 6,702

Note 11 - Other Borrowings an85

Note 11 - Other Borrowings and Subordinated Debentures - Long-term Debt (Details) (Parentheticals)	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Federal Home Loan Bank Advances [Member] | Minimum [Member]
Fixed rate	1.15%	1.15%
Federal Home Loan Bank Advances [Member] | Maximum [Member]
Fixed rate	7.37%	7.37%
Note Payable Due 10/15/2020 [Member]
Fixed rate	3.85%	3.85%
Trust Preferred Securities Due 12/30/2033 Floating Rate of 2.8% Above Three Month LIBOR 1 [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	2.80%	2.80%
Trust Preferred Securities Due 6/30/2035 [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	1.75%	1.75%
Trust Preferred Securities Due 9/15/2037 [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	1.37%	1.37%
Trust Preferred Securities Due 12/3/2033 [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	2.88%	2.88%
Trust Preferred Securities Due 12/13/2034 [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	2.00%	2.00%
Trust Preferred Securities, Due 6/6/2037 [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	1.57%	1.57%
Trust Preferred Securities, Due 12/15/2035 [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	1.45%

Note 11 - Other Borrowings an86

Note 11 - Other Borrowings and Subordinated Debentures - Aggregate Annual Maturities of Long-term Debt (Details) $ in Thousands	Sep. 30, 2017USD ($)
2,017	$ 1,851
2,018	23,863
2,019	7,586
2,020	36,343
2,021	2,251
Thereafter	76,065
Total	$ 147,959

Note 13 - Common Stock (Details

Note 13 - Common Stock (Details Textual)	Jul. 23, 2012shares
Stock Repurchase Program, Number of Shares Authorized to be Repurchased	850,000
Percent of Outstanding Stock	5.00%

Note 14 - Undivided Profits (De

Note 14 - Undivided Profits (Details Textual) $ in Millions	9 Months Ended
	Sep. 30, 2017USD ($)
Threshold Percentage of Net Profits Exceeded by Dividends Declared, Any Calendar Year	75.00%
Threshold Percentage of Net Profits Exceeded by Dividends Declared, Combined with Preceding Year	75.00%
Statutory Accounting Practices, Statutory Amount Available for Dividend Payments without Regulatory Approval	$ 1.8
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 Conservation Buffer Phase In Amount	0.625%
Capital Conservation Buffer Phase In Period	4 years
Capital Conservation Buffer	2.50%
Capital to Risk Weighted Assets	11.97%

Note 15 - Stock Based Compens89

Note 15 - Stock Based Compensation (Details Textual) - USD ($) $ / shares in Units, shares in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Allocated Share-based Compensation Expense	$ 6,486,000	$ 4,204,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options	407,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options	$ 15,423,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	2 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value	$ 6,066,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value	$ 4,761,000
Share Price	$ 57.90
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value	$ 1,012,000	$ 1,063,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value		$ 11.64

Note 15 - Stock Based Compens90

Note 15 - Stock Based Compensation - Stock Compensation Plans (Details) shares in Thousands	9 Months Ended
	Sep. 30, 2017$ / sharesshares
Stock Options Outstanding Number of Shares, Balance (in shares) | shares	473
Stock Options Outstanding Weighted Average Exercise Price, Balance (in dollars per share) | $ / shares	$ 42.85
Stock Options Outstanding Number of Shares, Granted (in shares) | shares	0
Stock Options Outstanding Weighted Average Exercise Price, Granted (in dollars per share) | $ / shares
Stock Options Outstanding Number of Shares, Stock Options Exercised (in shares) | shares	(39)
Stock Options Outstanding Weighted Average Exercise Price, Stock Options Exercised (in dollars per share) | $ / shares	$ 32.16
Stock Options Outstanding Number of Shares, Forfeited/Expired (in shares) | shares	(3)
Stock Options Outstanding Weighted Average Exercise Price, Forfeited/Expired (in dollars per share) | $ / shares	$ 44.68
Stock Options Outstanding Number of Shares, Balance (in shares) | shares	431
Stock Options Outstanding Weighted Average Exercise Price, Balance (in dollars per share) | $ / shares	$ 43.82
Stock Options Outstanding Number of Shares, Exercisable (in shares) | shares	325
Stock Options Outstanding Weighted Average Exercise Price,Exercisable (in dollars per share) | $ / shares	$ 43.23
Restricted Stock [Member]
Stock Awards/Units Outstanding Number of Shares, Balance (in shares) | shares	139
Stock Awards/Units Outstanding Weighted Average Grant-Date Fair-Value, Balance (in dollars per share) | $ / shares	$ 40.96
Stock Awards/Units Outstanding Number of Shares, Granted (in shares) | shares
Stock Awards/Units Outstanding Weighted Average Grant-Date Fair-Value, Granted (in dollars per share) | $ / shares
Stock Awards/Units Outstanding Number of Shares, Vested (in shares) | shares	(34)
Stock Awards/Units Outstanding Weighted Average Grant-Date Fair-Value, Vested (in dollars per share) | $ / shares	$ 36.45
Stock Awards/Units Outstanding Number of Shares, Forfeited/Expired (in shares) | shares	(12)
Stock Awards/Units Outstanding Weighted Average Grant-Date Fair-Value, Forfeited/Expired (in dollars per share) | $ / shares	$ 43.83
Stock Awards/Units Outstanding Number of Shares, Balance (in shares) | shares	93
Stock Awards/Units Outstanding Weighted Average Grant-Date Fair-Value, Balance (in dollars per share) | $ / shares	$ 42.21
Stock Units [Member]
Stock Awards/Units Outstanding Number of Shares, Balance (in shares) | shares	113
Stock Awards/Units Outstanding Weighted Average Grant-Date Fair-Value, Balance (in dollars per share) | $ / shares	$ 45.40
Stock Awards/Units Outstanding Number of Shares, Granted (in shares) | shares	185
Stock Awards/Units Outstanding Weighted Average Grant-Date Fair-Value, Granted (in dollars per share) | $ / shares	$ 58.18
Stock Awards/Units Outstanding Number of Shares, Vested (in shares) | shares	(124)
Stock Awards/Units Outstanding Weighted Average Grant-Date Fair-Value, Vested (in dollars per share) | $ / shares	$ 52.71
Stock Awards/Units Outstanding Number of Shares, Forfeited/Expired (in shares) | shares	(13)
Stock Awards/Units Outstanding Weighted Average Grant-Date Fair-Value, Forfeited/Expired (in dollars per share) | $ / shares	$ 51.72
Stock Awards/Units Outstanding Number of Shares, Balance (in shares) | shares	161
Stock Awards/Units Outstanding Weighted Average Grant-Date Fair-Value, Balance (in dollars per share) | $ / shares	$ 53.97

Note 15 - Stock Based Compens91

Note 15 - Stock Based Compensation - Stock Options Outstanding by Range of Exercise Prices (Details)	9 Months Ended
	Sep. 30, 2017$ / sharesshares
Range of exercise prices, minimum (in dollars per share)	$ 17.55
Range of exercise prices, maximum (in dollars per share)	$ 48.13
Options outstanding, number of shares (in shares) | shares	430,820
Options outstanding, weighted average remaining contractual life (Year)	7 years 43 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 43.82
Options exercisable, number of shares (in shares) | shares	324,622
Options exercisable, weighted average exercise price (in dollars per share)	$ 43.23
Range01 [Member]
Range of exercise prices, minimum (in dollars per share)	17.55
Range of exercise prices, maximum (in dollars per share)	$ 21.13
Options outstanding, number of shares (in shares) | shares	3,950
Options outstanding, weighted average remaining contractual life (Year)	2 years 277 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 19.38
Options exercisable, number of shares (in shares) | shares	3,950
Options exercisable, weighted average exercise price (in dollars per share)	$ 19.38
Range 02 [Member]
Range of exercise prices, minimum (in dollars per share)	21.29
Range of exercise prices, maximum (in dollars per share)	$ 21.29
Options outstanding, number of shares (in shares) | shares	3,700
Options outstanding, weighted average remaining contractual life (Year)	5 years 109 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 21.29
Options exercisable, number of shares (in shares) | shares	2,500
Options exercisable, weighted average exercise price (in dollars per share)	$ 21.29
Range 03 [Member]
Range of exercise prices, minimum (in dollars per share)	21.51
Range of exercise prices, maximum (in dollars per share)	$ 21.51
Options outstanding, number of shares (in shares) | shares	1,250
Options outstanding, weighted average remaining contractual life (Year)	2 years 109 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 21.51
Options exercisable, number of shares (in shares) | shares	1,250
Options exercisable, weighted average exercise price (in dollars per share)	$ 21.51
Range 04 [Member]
Range of exercise prices, minimum (in dollars per share)	30.31
Range of exercise prices, maximum (in dollars per share)	$ 30.31
Options outstanding, number of shares (in shares) | shares	22,180
Options outstanding, weighted average remaining contractual life (Year)	229 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 30.31
Options exercisable, number of shares (in shares) | shares	22,180
Options exercisable, weighted average exercise price (in dollars per share)	$ 30.31
Range 05 [Member]
Range of exercise prices, minimum (in dollars per share)	40.57
Range of exercise prices, maximum (in dollars per share)	$ 40.57
Options outstanding, number of shares (in shares) | shares	40,490
Options outstanding, weighted average remaining contractual life (Year)	7 years 91 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 40.57
Options exercisable, number of shares (in shares) | shares	40,490
Options exercisable, weighted average exercise price (in dollars per share)	$ 40.57
Range 06 [Member]
Range of exercise prices, minimum (in dollars per share)	40.72
Range of exercise prices, maximum (in dollars per share)	$ 40.72
Options outstanding, number of shares (in shares) | shares	1,500
Options outstanding, weighted average remaining contractual life (Year)	7 years 47 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 40.72
Options exercisable, number of shares (in shares) | shares	600
Options exercisable, weighted average exercise price (in dollars per share)	$ 40.72
Range 07 [Member]
Range of exercise prices, minimum (in dollars per share)	44.40
Range of exercise prices, maximum (in dollars per share)	$ 44.40
Options outstanding, number of shares (in shares) | shares	49,870
Options outstanding, weighted average remaining contractual life (Year)	7 years 91 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 44.40
Options exercisable, number of shares (in shares) | shares	37,144
Options exercisable, weighted average exercise price (in dollars per share)	$ 44.40
Range 08 [Member]
Range of exercise prices, minimum (in dollars per share)	45.50
Range of exercise prices, maximum (in dollars per share)	$ 45.50
Options outstanding, number of shares (in shares) | shares	246,485
Options outstanding, weighted average remaining contractual life (Year)	7 years 226 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 45.50
Options exercisable, number of shares (in shares) | shares	193,025
Options exercisable, weighted average exercise price (in dollars per share)	$ 45.50
Range 09 [Member]
Range of exercise prices, minimum (in dollars per share)	47.02
Range of exercise prices, maximum (in dollars per share)	$ 47.02
Options outstanding, number of shares (in shares) | shares	58,090
Options outstanding, weighted average remaining contractual life (Year)	7 years 288 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 47.02
Options exercisable, number of shares (in shares) | shares	20,838
Options exercisable, weighted average exercise price (in dollars per share)	$ 47.02
Range 10 [Member]
Range of exercise prices, minimum (in dollars per share)	48.13
Range of exercise prices, maximum (in dollars per share)	$ 48.13
Options outstanding, number of shares (in shares) | shares	3,305
Options outstanding, weighted average remaining contractual life (Year)	7 years 350 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 48.13
Options exercisable, number of shares (in shares) | shares	2,645
Options exercisable, weighted average exercise price (in dollars per share)	$ 48.13

Note 15 - Stock Based Compens92

Note 15 - Stock Based Compensation - Weighted-Average Fair Value Assumptions (Details)	9 Months Ended
	Sep. 30, 2016
Expected dividend yield	1.96%
Expected stock price volatility	27.34%
Risk-free interest rate	2.01%
Expected life of options (Year)	7 years

Note 16 - Additional Cash Flo93

Note 16 - Additional Cash Flow Information - Additional Cash Flow Information (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Interest paid	$ 21,531	$ 16,311
Income taxes paid	21,718	32,069
Transfers of loans to foreclosed assets and other real estate owned	5,311	3,846
Transfer of Premises to Foreclosed Assets and Other Real Estate Owned [Member]
Transfers of loans to foreclosed assets and other real estate owned	3,188
Transfers of Premises and Equipment to Premises Held for Sale [Member]
Transfers of premises and equipment to premises held for sale		7,200
Transfers of Premises Held-for-sale to Foreclosed Assets Held-for-sale [Member]
Transfers of loans to foreclosed assets and other real estate owned		$ 652

Note 17 - Other Operating Exp94

Note 17 - Other Operating Expenses - Other Operating Expenses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Professional services	$ 3,946	$ 3,282	$ 13,079	$ 9,678
Postage	1,091	1,150	3,427	3,458
Telephone	943	912	3,003	3,014
Credit card expense	3,137	2,947	9,081	8,319
Marketing	1,219	1,525	4,253	4,647
Operating supplies	592	457	1,406	1,273
Amortization of intangibles	1,724	1,503	4,828	4,411
Branch right sizing expense	153	218	370	3,451
Other expense	5,458	5,185	18,588	14,851
Total other operating expenses	$ 18,263	$ 17,179	$ 58,035	$ 53,102

Note 19 - Commitments and Cre95

Note 19 - Commitments and Credit Risk (Details Textual) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Letters of Credit Outstanding, Amount	$ 29,812,000	$ 29,362,000
Standby Letters of Credit [Member]
Deferred Revenue	$ 0	$ 0
Minimum [Member]
Letters of Credit Term	270 days	270 days
Maximum [Member]
Letters of Credit Term	15 years	15 years
Credit Card Commitments to Extend Credit [Member]
Commitments and Contingencies	$ 568,655,000	$ 562,527,000
Other Loan Commitments to Extend Credit [Member]
Commitments and Contingencies	$ 1,628,358,000	$ 1,220,137,000

Note 20 - Preferred Stock (Deta

Note 20 - Preferred Stock (Details Textual) - Series A Preferred Stock [Member] - shares	Feb. 19, 2016	Feb. 27, 2015	Feb. 18, 2016
Preferred Stock, Dividend Rate, Percentage	9.00%		1.00%
Community First Bancshares Inc [Member]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares		30,852

Note 21 - Fair Value Measurem97

Note 21 - Fair Value Measurements (Details Textual) - USD ($)	9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Real Estate Acquired Through Foreclosure	$ 31,477,000	$ 26,895,000
Impaired Financing Receivable, Related Allowance	6,321,000	680,000
Collateral Dependent Loans [Member]
Impaired Financing Receivable, Related Allowance	$ 2,195,000	2,384,000
Commercial and Residential Real Estate Collateral [Member] | Minimum [Member]
Fair Value Percentage Of Collateral Discount	10.00%
Commercial and Residential Real Estate Collateral [Member] | Maximum [Member]
Fair Value Percentage Of Collateral Discount	40.00%
Foreclosed Assets Not Covered By FDIC Loss Share [Member]
Real Estate Acquired Through Foreclosure	$ 31,500,000	$ 26,900,000
Special Mention Or Worse [Member]
Collateral Dependent Loans Amount At Which All Loans Are Tested	$ 1,500,000

Note 21 - Fair Value Measurem98

Note 21 - Fair Value Measurements - Fair Value of Financial Assets Measure on a Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Available-for-sale securities	$ 1,317,420	$ 1,157,354
Assets held in trading accounts	49	41
Fair Value, Measurements, Recurring [Member]
Assets held in trading accounts	49	41
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Assets held in trading accounts
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Assets held in trading accounts	49	41
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Assets held in trading accounts
US Government Agencies Debt Securities [Member]
Available-for-sale securities	208,220	137,771
US Government Agencies Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]
Available-for-sale securities	208,220	137,771
US Government Agencies Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Available-for-sale securities
US Government Agencies Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Available-for-sale securities	208,220	137,771
US Government Agencies Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Available-for-sale securities
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Available-for-sale securities	959,698	868,324
Mortgage-backed Securities, Issued by Private Enterprises [Member] | Fair Value, Measurements, Recurring [Member]
Available-for-sale securities	959,698	868,324
Mortgage-backed Securities, Issued by Private Enterprises [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Available-for-sale securities
Mortgage-backed Securities, Issued by Private Enterprises [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Available-for-sale securities	959,698	868,324
Mortgage-backed Securities, Issued by Private Enterprises [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Available-for-sale securities
US States and Political Subdivisions Debt Securities [Member]
Available-for-sale securities	84,822	102,943
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]
Available-for-sale securities	84,822	102,943
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Available-for-sale securities
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Available-for-sale securities	84,822	102,943
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Available-for-sale securities
Other Securities [Member]
Available-for-sale securities	64,680	48,016
Other Securities [Member] | Fair Value, Measurements, Recurring [Member]
Other securities	64,680	48,016
Other Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Other securities
Other Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Other securities	64,680	48,016
Other Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Other securities
US Treasury Securities [Member]
Available-for-sale securities		300
US Treasury Securities [Member] | Fair Value, Measurements, Recurring [Member]
Available-for-sale securities		300
US Treasury Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Available-for-sale securities		300
US Treasury Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Available-for-sale securities
US Treasury Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Available-for-sale securities

Note 21 - Fair Value Measurem99

Note 21 - Fair Value Measurements - Fair Value of Financial Assets Measured on a Nonrecurring Basis (Details) - Fair Value, Measurements, Nonrecurring [Member] - USD ($) $ in Thousands		Sep. 30, 2017	Dec. 31, 2016
Impaired loans (1) (2) (collateral dependent)	[1],[2]	$ 11,229	$ 17,154
Foreclosed assets and other real estate owned (1)	[2]	19,506	17,806
Fair Value, Inputs, Level 3 [Member]
Impaired loans (1) (2) (collateral dependent)	[1],[2]	11,229	17,154
Foreclosed assets and other real estate owned (1)	[2]	19,506	17,806
Fair Value, Inputs, Level 1 [Member]
Foreclosed assets and other real estate owned (1)	[2]
Fair Value, Inputs, Level 2 [Member]
Foreclosed assets and other real estate owned (1)	[2]
[1]	Specific allocations of $2,195,000 and $2,384,000 were related to the impaired collateral dependent loans for which fair value re-measurements took place during the periods ended September 30, 2017 and December 31, 2016, respectively.
[2]	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.

Note 21 - Fair Value Measure100

Note 21 - Fair Value Measurements - Estimated Fair Values and Related Carrying Amounts of Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Held-to-maturity securities	$ 412,140	$ 465,960
Reported Value Measurement [Member]
Cash and cash equivalents	432,290	285,659
Interest bearing balances due from banks - time	4,059	4,563
Held-to-maturity securities	406,033	462,096
Mortgage loans held for sale	12,614	27,788
Interest receivable	30,749	27,788
Federal funds purchased and securities sold under agreements to repurchase	121,687	115,029
Other borrowings	522,541	273,159
Subordinated debentures	67,418	60,397
Interest payable	2,043	1,668
Reported Value Measurement [Member] | Non-Interest Bearing Transaction Accounts [Member]
Deposits	1,669,860	1,491,676
Reported Value Measurement [Member] | Interest Bearing Transaction Accounts and Savings Deposits [Member]
Deposits	4,344,779	3,956,483
Reported Value Measurement [Member] | Time Deposits [Member]
Deposits	1,310,951	1,287,060
Reported Value Measurement [Member] | Legacy Loans [Member]
Legacy loans (net of allowance)	5,168,595	4,290,921
Reported Value Measurement [Member] | Acquired Loans [Member]
Legacy loans (net of allowance)	1,092,039	1,305,683
Estimate of Fair Value Measurement [Member]
Cash and cash equivalents	432,290	285,659
Interest bearing balances due from banks - time	4,059	4,563
Held-to-maturity securities	412,140	465,960
Mortgage loans held for sale	12,614	27,788
Interest receivable	30,749	27,788
Federal funds purchased and securities sold under agreements to repurchase	121,687	115,029
Other borrowings	526,266	292,367
Subordinated debentures	62,142	55,318
Interest payable	2,043	1,668
Estimate of Fair Value Measurement [Member] | Non-Interest Bearing Transaction Accounts [Member]
Deposits	1,669,860	1,491,676
Estimate of Fair Value Measurement [Member] | Interest Bearing Transaction Accounts and Savings Deposits [Member]
Deposits	4,344,779	3,956,483
Estimate of Fair Value Measurement [Member] | Time Deposits [Member]
Deposits	1,301,451	1,278,339
Estimate of Fair Value Measurement [Member] | Legacy Loans [Member]
Legacy loans (net of allowance)	5,140,768	4,305,165
Estimate of Fair Value Measurement [Member] | Acquired Loans [Member]
Legacy loans (net of allowance)	1,086,160	1,310,017
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member]
Cash and cash equivalents	432,290	285,659
Interest bearing balances due from banks - time
Held-to-maturity securities
Mortgage loans held for sale
Interest receivable
Federal funds purchased and securities sold under agreements to repurchase
Other borrowings
Subordinated debentures
Interest payable
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | Non-Interest Bearing Transaction Accounts [Member]
Deposits
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | Interest Bearing Transaction Accounts and Savings Deposits [Member]
Deposits
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | Time Deposits [Member]
Deposits
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | Legacy Loans [Member]
Legacy loans (net of allowance)
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | Acquired Loans [Member]
Legacy loans (net of allowance)
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Cash and cash equivalents
Interest bearing balances due from banks - time	4,059	4,563
Held-to-maturity securities	412,140	465,960
Mortgage loans held for sale
Interest receivable	30,749	27,788
Federal funds purchased and securities sold under agreements to repurchase	121,687	115,029
Other borrowings	526,266	292,367
Subordinated debentures	62,142	55,318
Interest payable	2,043	1,668
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Non-Interest Bearing Transaction Accounts [Member]
Deposits	1,669,860	1,491,676
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Interest Bearing Transaction Accounts and Savings Deposits [Member]
Deposits	4,344,779	3,956,483
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Time Deposits [Member]
Deposits
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Legacy Loans [Member]
Legacy loans (net of allowance)
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Acquired Loans [Member]
Legacy loans (net of allowance)
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member]
Cash and cash equivalents
Interest bearing balances due from banks - time
Held-to-maturity securities
Mortgage loans held for sale	12,614	27,788
Interest receivable
Federal funds purchased and securities sold under agreements to repurchase
Other borrowings
Subordinated debentures
Interest payable
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member] | Non-Interest Bearing Transaction Accounts [Member]
Deposits
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member] | Interest Bearing Transaction Accounts and Savings Deposits [Member]
Deposits
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member] | Time Deposits [Member]
Deposits	1,301,451	1,278,339
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member] | Legacy Loans [Member]
Legacy loans (net of allowance)	5,140,768	4,305,165
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member] | Acquired Loans [Member]
Legacy loans (net of allowance)	$ 1,086,160	$ 1,310,017

Note 22 - Subsequent Events (De

Note 22 - Subsequent Events (Details Textual) - Subsequent Event [Member] - USD ($)	Oct. 19, 2017	Oct. 06, 2017
U.S. Bank National Association [Member] | Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Amount Outstanding During Period		$ 75,000,000
U.S. Bank National Association [Member] | Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate		1.50%
Mergers [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets	$ 14,700,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Loans	10,500,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Total Deposits	11,200,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities	$ 76,700,000
OKSB Merger [Member]
Business Combination, Conversion of Each Outstanding Common stock to Company’s Common Stock	0.3903
Business Combination, Conversion of Each Outstanding common stock to Cash	$ 5.11
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares	7,250,000
Payments to Acquire Businesses, Gross	$ 95,000,000
First Texas Merger [Member]
Business Combination, Conversion of Each Outstanding Common stock to Company’s Common Stock	0.8263
Business Combination, Conversion of Each Outstanding common stock to Cash	$ 6.60
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares	6,500,000
Payments to Acquire Businesses, Gross	$ 70,000,000