ServisFirst Bancshares (SFBS) 10-Q 30 Oct 18 2018 Q3 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2018	Oct. 25, 2018
Document Information [Line Items]
Entity Registrant Name	ServisFirst Bancshares, Inc.
Entity Central Index Key	1,430,723
Trading Symbol	sfbs
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Current Reporting Status	Yes
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Common Stock, Shares Outstanding (in shares)		53,292,233
Document Type	10-Q
Document Period End Date	Sep. 30, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q3
Amendment Flag	false

Consolidated Balance Sheets (Cu

Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017	[1]
ASSETS
Cash and due from banks	$ 77,692	$ 86,213
Interest-bearing balances due from depository institutions	59,096	151,849
Federal funds sold	229,033	239,524
Cash and cash equivalents	365,821	477,586
Available for sale debt securities, at fair value	578,021	538,080
Held to maturity debt securities (fair value of $250 at September 30, 2018 and December 31, 2017)	250	250
Equity securities	889	1,034
Mortgage loans held for sale	5,277	4,459
Loans	6,363,531	5,851,261
Less allowance for loan losses	(66,879)	(59,406)
Loans, net	6,296,652	5,791,855
Premises and equipment, net	57,882	58,900
Accrued interest and dividends receivable	24,755	20,661
Deferred tax assets	12,268	13,022
Other real estate owned and repossessed assets	5,714	6,701
Bank owned life insurance contracts	129,869	127,519
Goodwill and other identifiable intangible assets	14,517	14,719
Other assets	25,918	27,598
Total assets	7,517,833	7,082,384
Deposits:
Noninterest-bearing	1,504,447	1,440,326
Interest-bearing	5,000,904	4,651,348
Total deposits	6,505,351	6,091,674
Federal funds purchased	246,094	301,797
Other borrowings	64,657	64,832
Accrued interest payable	8,562	4,971
Other liabilities	11,659	11,506
Total liabilities	6,836,323	6,474,780
Stockholders' equity:
Common stock, par value $0.001 per share; 100,000,000 shares authorized; 53,197,807 shares issued and outstanding at September 30, 2018, and 52,992,586 shares issued and outstanding at December 31, 2017	53	53
Additional paid-in capital	218,062	217,693
Retained earnings	472,681	389,554
Accumulated other comprehensive loss	(9,788)	(198)
Total stockholders' equity attributable to ServisFirst Bancshares, Inc.	681,008	607,102
Noncontrolling interest	502	502
Total stockholders' equity	681,510	607,604
Total liabilities and stockholders' equity	7,517,833	7,082,384
Undesignated Preferred Stock [Member]
Stockholders' equity:
Preferred stock, par value $0.001 per share; 1,000,000 authorized and undesignated at September 30, 2018 and December 31, 2017
[1]	Derived from audited financial statements.

Consolidated Balance Sheets (_2

Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017	[1]
Held to maturity debt securities, fair value	$ 250	$ 250
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, authorized (in shares)	100,000,000	100,000,000
Common stock, issued (in shares)	53,197,807	52,992,586
Common stock, outstanding (in shares)	53,197,807	52,992,586
Undesignated Preferred Stock [Member]
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized (in shares)	1,000,000	1,000,000
Preferred stock, undesignated (in shares)	1,000,000	1,000,000
[1]	Derived from audited financial statements.

Consolidated Statements of Inco

Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Interest income:
Interest and fees on loans	$ 78,991	$ 63,857	$ 222,285	$ 179,325
Taxable securities	3,276	2,288	9,148	6,649
Nontaxable securities	583	729	1,862	2,246
Federal funds sold	892	379	2,137	1,185
Other interest and dividends	316	388	1,031	1,291
Total interest income	84,058	67,641	236,463	190,696
Interest expense:
Deposits	15,210	7,574	36,545	19,877
Borrowed funds	1,985	1,671	6,097	4,804
Total interest expense	17,195	9,245	42,642	24,681
Net interest income	66,863	58,396	193,821	166,015
Provision for loan losses	6,624	4,803	14,884	14,170
Net interest income after provision for loan losses	60,239	53,593	178,937	151,845
Noninterest income:
Securities gains	186		190
Increase in cash surrender value life insurance	787	825	2,350	2,334
Other operating income	396	371	1,278	1,146
Total noninterest income	5,591	4,790	15,919	14,141
Noninterest expenses:
Salaries and employee benefits	13,070	12,428	39,464	36,172
Equipment and occupancy expense	2,193	1,947	6,260	6,452
Professional services	853	805	2,582	2,384
FDIC and other regulatory assessments	675	810	2,967	2,888
OREO expense	289	31	765	163
Other operating expenses	6,070	5,476	18,634	16,580
Total noninterest expenses	23,150	21,497	70,672	64,639
Income before income taxes	42,680	36,886	124,184	101,347
Provision for income taxes	8,120	11,627	23,481	29,405
Net income	34,560	25,259	100,703	71,942
Preferred stock dividends			31	31
Net income available to common stockholders	$ 34,560	$ 25,259	$ 100,672	$ 71,911
Basic earnings per common share (in dollars per share)	$ 0.65	$ 0.48	$ 1.89	$ 1.36
Diluted earnings per common share (in dollars per share)	$ 0.64	$ 0.47	$ 1.86	$ 1.33
Deposit Account [Member]
Noninterest income:
Noninterest income	$ 1,595	$ 1,467	$ 4,833	$ 4,203
Mortgage Banking [Member]
Noninterest income:
Noninterest income	789	978	2,096	2,941
Credit Card [Member]
Noninterest income:
Noninterest income	$ 1,838	$ 1,149	$ 5,172	$ 3,517

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Net income	$ 34,560	$ 25,259	$ 100,703	$ 71,942
Other comprehensive (loss) income, net of tax:
Unrealized holding (losses) gains arising during period from securities available for sale, net of tax of $(653) and $(2,589) for the three and nine months ended September 30, 2018, respectively, and $165 and $896 for the three and nine months ended September 30, 2017, respectively	(2,463)	305	(9,740)	1,672
Reclassification adjustment for gains on sale of securities, net of tax of $39 and $40 for the three and nine months ended September 30, 2018, respectively	147		150
Other comprehensive (loss) income, net of tax	(2,316)	305	(9,590)	1,672
Comprehensive income	$ 32,244	$ 25,564	$ 91,113	$ 73,614

Consolidated Statements of Co_2

Consolidated Statements of Comprehensive Income (Unaudited) (Parentheticals) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Unrealized holding gain (loss) from available for sale securities, tax	$ (653)	$ 165	$ (2,589)	$ 896
Reclassification adjustment for net gain (loss) on sale securities, tax	$ 39		$ 40

Consolidated Statement of Stock

Consolidated Statement of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Noncontrolling Interest [Member]	Total
Balance at Dec. 31, 2016		$ 53	$ 215,932	$ 307,151	$ (624)	$ 377	$ 522,889
Common dividends paid				(5,286)			(5,286)
Common dividends declared				(2,649)			(2,649)
Preferred dividends paid				(31)			(31)
Issue shares of common stock upon exercise of stock options			1,784				1,784
Shares of common stock withheld in net settlement upon exercise of stock options			(1,149)				(1,149)
Issue shares of REIT preferred stock						125	125
Stock-based compensation expense			916				916
Other comprehensive income, net of tax					1,672		1,672
Net income				71,942			71,942
Balance at Sep. 30, 2017		53	217,483	371,127	1,048	502	590,213
Balance at Dec. 31, 2017		53	217,693	389,554	(198)	502	607,604	[1]
Common dividends paid				(11,694)			(11,694)
Common dividends declared				(5,851)			(5,851)
Preferred dividends paid				(31)			(31)
Issue shares of common stock upon exercise of stock options			1,325				1,325
Shares of common stock withheld in net settlement upon exercise of stock options			(1,640)				(1,640)
Stock-based compensation expense			684				684
Other comprehensive income, net of tax					(9,590)		(9,590)
Net income				100,703			100,703
Balance at Sep. 30, 2018		$ 53	$ 218,062	$ 472,681	$ (9,788)	$ 502	$ 681,510
[1]	Derived from audited financial statements.

Consolidated Statement of Sto_2

Consolidated Statement of Stockholders' Equity (Unaudited) (Parentheticals) - $ / shares	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Additional Paid-in Capital [Member]
Issuance of common stock, shares (in shares)	191,371	328,214
Shares withholed in net settlement upon exercise of stock options (in shares)	39,965	30,786
Noncontrolling Interest [Member]
Issuance of REIT preferred stock, shares (in shares)		125
Common dividends, per share (in dollars per share)	$ 0.22	$ 0.10
Common dividends, per share declared (in dollars per share)	$ 0.11	$ 0.05

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
OPERATING ACTIVITIES
Net income	$ 100,703,000	$ 71,942,000
Adjustments to reconcile net income to net cash provided by
Deferred tax expense (benefit)	754,000	(3,099,000)
Provision for loan losses	14,884,000	14,170,000
Depreciation	2,548,000	2,281,000
Accretion on acquired loans	(147,000)	(374,000)
Amortization of core deposit intangible	202,000	209,000
Net amortization of debt securities available for sale	2,268,000	2,874,000
Increase in accrued interest and dividends receivable	(4,094,000)	(4,533,000)
Stock-based compensation expense	684,000	916,000
Increase (decrease) in accrued interest payable	3,591,000	(48,000)
Proceeds from sale of mortgage loans held for sale	81,319,000	105,940,000
Originations of mortgage loans held for sale	(80,041,000)	(103,295,000)
Gain on sale of debt securities available for sale	(15,000)
Gain on sale of equity securities	(175,000)
Gain on sale of mortgage loans held for sale	(2,096,000)	(2,941,000)
Net loss (gain) on sale of other real estate owned and repossessed assets	3,000	(33,000)
Write down of other real estate owned and repossessed assets	488,000	5,000
Operating losses of tax credit partnerships	128,000	42,000
Increase in cash surrender value of life insurance contracts	(2,350,000)	(2,334,000)
Net change in other assets, liabilities, and other operating activities	(2,608,000)	(551,000)
Net cash provided by operating activities	116,046,000	81,171,000
INVESTMENT ACTIVITIES
Purchase of debt securities available for sale	(122,821,000)	(77,567,000)
Proceeds from maturities, calls and paydowns of debt securities available for sale	63,803,000	65,734,000
Proceeds from sale of debt securities available for sale	5,736,000
Purchase of debt securities held to maturity		(29,782,000)
Proceeds from maturities, calls and paydowns of debt securities held to maturity		4,947,000
Purchase of equity securities		(10,000)
Proceeds from sale of equity securities	305,000
Increase in loans	(520,610,000)	(724,626,000)
Purchase of premises and equipment	(1,530,000)	(17,071,000)
Purchase of bank-owned life insurance contracts		(10,000,000)
Proceeds from sale of other real estate owned and repossessed assets	1,572,000	1,529,000
Net cash used in investing activities	(573,545,000)	(786,846,000)
FINANCING ACTIVITIES
Net increase in non-interest-bearing deposits	64,121,000	124,360,000
Net increase in interest-bearing deposits	349,556,000	252,230,000
Net decrease in federal funds purchased	(55,703,000)	(101,064,000)
Repayment of Federal Home Loan Bank advances	(200,000)	(300,000)
Proceeds from sale of preferred stock, net		125,000
Proceeds from exercise of stock options	1,325,000	635,000
Taxes paid in net settlement of tax obligation upon exercise of stock options	(1,640,000)
Dividends paid on common stock	(11,694,000)	(5,286,000)
Dividends paid on preferred stock	(31,000)	(31,000)
Net cash provided by financing activities	345,734,000	270,669,000
Net decrease in cash and cash equivalents	(111,765,000)	(435,006,000)
Cash and cash equivalents at beginning of period	477,586,000	783,997,000
Cash and cash equivalents at end of period	365,821,000	348,991,000
Cash paid for:
Interest	39,051,000	24,729,000
Income taxes	20,235,000	30,651,000
Income tax refund	(2,000)	(492,000)
NONCASH TRANSACTIONS
Other real estate acquired in settlement of loans	1,206,000	586,000
Internally financed sales of other real estate owned	130,000	185,000
Dividends declared	$ 5,851,000	$ 2,649,000

Note 1 - General

Note 1 - General	9 Months Ended
	Sep. 30, 2018
Notes to Financial Statements
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]	NOTE 1 The accompanying consolidated financial statements in this report have been prepared in accordance with the rules and regulations of the Securities and Exchange Commission, including Regulation S- X 10 not not not may 10 December 31, 2017. All reported amounts are in thousands except share and per share data. Revenue Recognition Accounting Standards Codification (“ASC”) Topic 606, Revenue from Contracts with Customers (“ASC 606” The majority of our revenue-generating transactions are excluded from the scope of ASC 606, 606, • Deposit account service charges – represent service fees for monthly activity and maintenance on customer accounts. Attributes can be transaction-based, item-based or time-based. Revenue is recognized when our performance obligation is completed which is generally monthly for maintenance services or when a transaction is processed. Payment for such performance obligations are generally received at the time the performance obligations are satisfied. • Credit card rewards program membership fees – represent memberships in our credit card rewards program and are paid annually by our cardholders at the time they open an account and on each anniversary. Revenue is recognized ratably over the membership period. Other non-interest income primarily includes income on bank owned life insurance contracts, letter of credit fees and gains on sale of loans held for sale, none 606.

Note 2 - Cash and Cash Equivale

Note 2 - Cash and Cash Equivalents	9 Months Ended
	Sep. 30, 2018
Notes to Financial Statements
Cash and Cash Equivalents Disclosure [Text Block]	NOTE 2 Cash on hand, cash items in process of collection, amounts due from banks, and federal funds sold are included in cash and cash equivalents.

Note 3 - Earnings Per Common Sh

Note 3 - Earnings Per Common Share	9 Months Ended
	Sep. 30, 2018
Notes to Financial Statements
Earnings Per Share [Text Block]	NOTE 3 Basic earnings per common share are computed by dividing net income available to common stockholders by the weighted average number of common shares outstanding during the period. Diluted earnings per common share include the dilutive effect of additional potential common shares issuable under stock options. Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 (In Thousands, Except Shares and Per Share Data) Earnings per common share Weighted average common shares outstanding 53,171,144 52,950,644 53,134,861 52,854,332 Net income available to common stockholders $ 34,560 $ 25,259 $ 100,672 $ 71,911 Basic earnings per common share $ 0.65 $ 0.48 $ 1.89 $ 1.36 Weighted average common shares outstanding 53,171,144 52,950,644 53,134,861 52,854,332 Dilutive effects of assumed conversions and exercise of stock options and warrants 1,020,078 1,149,028 1,055,383 1,256,580 Weighted average common and dilutive potential common shares outstanding 54,191,222 54,099,672 54,190,244 54,110,912 Net income available to common stockholders $ 34,560 $ 25,259 $ 100,672 $ 71,911 Diluted earnings per common share $ 0.64 $ 0.47 $ 1.86 $ 1.33

Note 4 - Securities

Note 4 - Securities	9 Months Ended
	Sep. 30, 2018
Notes to Financial Statements
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]	NOTE 4 The amortized cost and fair value of available-for-sale and held-to-maturity securities at September 30, 2018 December 31, 2017 Gross Gross Amortized Unrealized Unrealized Market Cost Gain Loss Value September 30, 2018 (In Thousands) Securities Available for Sale U.S. Treasury and government sponsored agencies $ 75,477 $ 2 $ (1,201 ) $ 74,278 Mortgage-backed securities 308,439 407 (10,022 ) 298,824 State and municipal securities 113,613 234 (1,149 ) 112,698 Corporate debt 92,916 257 (952 ) 92,221 Total 590,445 900 (13,324 ) 578,021 Securities Held to Maturity State and municipal securities 250 - - 250 Total $ 250 $ - $ - $ 250 December 31, 2017 Securities Available for Sale U.S. Treasury and government sponsored agencies $ 55,567 $ 38 $ (249 ) $ 55,356 Mortgage-backed securities 278,177 1,006 (2,685 ) 276,498 State and municipal securities 134,641 761 (553 ) 134,849 Corporate debt 69,996 1,416 (35 ) 71,377 Total 538,381 3,221 (3,522 ) 538,080 Securities Held to Maturity State and municipal securities 250 - - 250 Total $ 250 $ - $ - $ 250 The amortized cost and fair value of debt securities as of September 30, 2018 December 31, 2017 may may not September 30, 2018 December 31, 2017 Amortized Fair Value Amortized Fair Value (In thousands) Debt securities available for sale Due within one year $ 49,809 $ 49,722 $ 22,122 $ 22,172 Due from one to five years 213,202 210,472 160,773 160,563 Due from five to ten years 17,141 17,106 73,362 74,684 Due after ten years 1,854 1,897 3,947 4,163 Mortgage-backed securities 308,439 298,824 278,177 276,498 $ 590,445 $ 578,021 $ 538,381 $ 538,080 Debt securities held to maturity Due from one to five years $ 250 $ 250 $ 250 $ 250 $ 250 $ 250 $ 250 $ 250 All mortgage-backed securities are with government-sponsored enterprises (GSEs) such as Federal National Mortgage Association, Government National Mortgage Association, Federal Home Loan Bank, and Federal Home Loan Mortgage Corporation. The following table identifies, as of September 30, 2018 December 31, 2017, 12 12 September 30, 2018, 197 758 12 not not not may not September 30, 2018. not Less Than Twelve Months Twelve Months or More Total Gross Gross Gross Unrealized Unrealized Unrealized Losses Fair Value Losses Fair Value Losses Fair Value (In Thousands) September 30, 2018 U.S. Treasury and government sponsored agencies $ (736 ) $ 62,833 $ (465 ) $ 11,311 $ (1,201 ) $ 74,144 Mortgage-backed securities (3,566 ) 141,107 (6,456 ) 144,336 (10,022 ) 285,443 State and municipal securities (613 ) 69,646 (536 ) 20,506 (1,149 ) 90,152 Corporate debt (952 ) 65,456 - - (952 ) 65,456 Total $ (5,867 ) $ 339,042 $ (7,457 ) $ 176,153 $ (13,324 ) $ 515,195 December 31, 2017 U.S. Treasury and government sponsored agencies $ (151 ) $ 33,401 $ (98 ) $ 2,926 $ (249 ) $ 36,327 Mortgage-backed securities (986 ) 140,432 (1,699 ) 75,903 (2,685 ) 216,335 State and municipal securities (450 ) 66,637 (103 ) 6,648 (553 ) 73,285 Corporate debt (35 ) 6,955 - - (35 ) 6,955 Total $ (1,622 ) $ 247,425 $ (1,900 ) $ 85,477 $ (3,522 ) $ 332,902

Note 5 - Loans

Note 5 - Loans	9 Months Ended
	Sep. 30, 2018
Notes to Financial Statements
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]	NOTE 5 The following table details the Company’s loans at September 30, 2018 December 31, 2017: September 30, December 31, 2018 2017 (Dollars In Thousands) Commercial, financial and agricultural $ 2,478,788 $ 2,279,366 Real estate - construction 543,611 580,874 Real estate - mortgage: Owner-occupied commercial 1,430,111 1,328,666 1-4 family mortgage 610,460 603,063 Other mortgage 1,236,954 997,079 Subtotal: Real estate - mortgage 3,277,525 2,928,808 Consumer 63,607 62,213 Total Loans 6,363,531 5,851,261 Less: Allowance for loan losses (66,879 ) (59,406 ) Net Loans $ 6,296,652 $ 5,791,855 Commercial, financial and agricultural 38.95 % 38.96 % Real estate - construction 8.54 % 9.93 % Real estate - mortgage: Owner-occupied commercial 22.47 % 22.71 % 1-4 family mortgage 9.60 % 10.30 % Other mortgage 19.44 % 17.04 % Subtotal: Real estate - mortgage 51.51 % 50.05 % Consumer 1.00 % 1.06 % Total Loans 100.00 % 100.00 % The credit quality of the loan portfolio is summarized no • Pass – loans which are well protected by the current net worth and paying capacity of the obligor (or obligors, if any) or by the fair value, less cost to acquire and sell, of any underlying collateral. • Special Mention – loans with potential weakness that may, not not not • Substandard – loans that exhibit well-defined weakness or weaknesses that currently jeopardize debt repayment. These loans are characterized by the distinct possibility that the institution will sustain some loss if the weaknesses are not • Doubtful – loans that have all the weaknesses inherent in loans classified substandard, plus the added characteristic that the weaknesses make collection or liquidation in full on the basis of currently existing facts, conditions, and values highly questionable and improbable. Loans by credit quality indicator as of September 30, 2018 December 31, 2017 Special September 30, 2018 Pass Mention Substandard Doubtful Total (In Thousands) Commercial, financial and agricultural $ 2,413,994 $ 41,656 $ 23,138 $ - $ 2,478,788 Real estate - construction 536,789 5,400 1,422 - 543,611 Real estate - mortgage: Owner-occupied commercial 1,396,503 30,101 3,507 - 1,430,111 1-4 family mortgage 606,509 2,600 1,351 - 610,460 Other mortgage 1,210,063 20,466 6,425 - 1,236,954 Total real estate mortgage 3,213,075 53,167 11,283 - 3,277,525 Consumer 63,555 3 49 - 63,607 Total $ 6,227,413 $ 100,226 $ 35,892 $ - $ 6,363,531 Special December 31, 2017 Pass Mention Substandard Doubtful Total (In Thousands) Commercial, financial and agricultural $ 2,225,084 $ 27,835 $ 26,447 $ - $ 2,279,366 Real estate - construction 572,657 6,691 1,526 - 580,874 Real estate - mortgage: Owner-occupied commercial 1,317,113 7,333 4,220 - 1,328,666 1-4 family mortgage 598,222 1,599 3,242 - 603,063 Other mortgage 976,348 18,122 2,609 - 997,079 Total real estate mortgage 2,891,683 27,054 10,071 - 2,928,808 Consumer 62,083 42 88 - 62,213 Total $ 5,751,507 $ 61,622 $ 38,132 $ - $ 5,851,261 Loans by performance status as of September 30, 2018 December 31, 2017 September 30, 2018 Performing Nonperforming Total (In Thousands) Commercial, financial and agricultural $ 2,469,980 $ 8,808 $ 2,478,788 Real estate - construction 543,611 - 543,611 Real estate - mortgage: Owner-occupied commercial 1,429,958 153 1,430,111 1-4 family mortgage 609,658 802 610,460 Other mortgage 1,231,915 5,039 1,236,954 Total real estate mortgage 3,271,531 5,994 3,277,525 Consumer 63,542 65 63,607 Total $ 6,348,664 $ 14,867 $ 6,363,531 December 31, 2017 Performing Nonperforming Total (In Thousands) Commercial, financial and agricultural $ 2,269,642 $ 9,724 $ 2,279,366 Real estate - construction 580,874 - 580,874 Real estate - mortgage: Owner-occupied commercial 1,328,110 556 1,328,666 1-4 family mortgage 602,604 459 603,063 Other mortgage 997,079 - 997,079 Total real estate mortgage 2,927,793 1,015 2,928,808 Consumer 62,127 86 62,213 Total $ 5,840,436 $ 10,825 $ 5,851,261 Loans by past due status as of September 30, 2018 December 31, 2017 September 30, 2018 Past Due Status (Accruing Loans) Total Past 30-59 Days 60-89 Days 90+ Days Due Non-Accrual Current Total Loans (In Thousands) Commercial, financial and agricultural $ 513 $ 9,147 $ 309 $ 9,969 $ 8,499 $ 2,460,320 $ 2,478,788 Real estate - construction 538 997 - 1,535 - 542,076 543,611 Real estate - mortgage: Owner-occupied commercial 375 3,941 - 4,316 153 1,425,642 1,430,111 1-4 family mortgage 150 970 301 1,421 501 608,538 610,460 Other mortgage - 63 5,039 5,102 - 1,231,852 1,236,954 Total real estate - mortgage 525 4,974 5,340 10,839 654 3,266,032 3,277,525 Consumer 173 24 65 262 - 63,345 63,607 Total $ 1,749 $ 15,142 $ 5,714 $ 22,605 $ 9,153 $ 6,331,773 $ 6,363,531 December 31, 2017 Past Due Status (Accruing Loans) Total Past 30-59 Days 60-89 Days 90+ Days Due Non-Accrual Current Total Loans (In Thousands) Commercial, financial and agricultural $ 1,410 $ 5,702 $ 12 $ 7,124 $ 9,712 $ 2,262,530 $ 2,279,366 Real estate - construction 56 997 - 1,053 - 579,821 580,874 Real estate - mortgage: Owner-occupied commercial - 3,664 - 3,664 556 1,324,446 1,328,666 1-4 family mortgage 430 850 - 1,280 459 601,324 603,063 Other mortgage 5,116 - - 5,116 - 991,963 997,079 Total real estate - mortgage 5,546 4,514 - 10,060 1,015 2,917,733 2,928,808 Consumer 131 23 48 202 38 61,973 62,213 Total $ 7,143 $ 11,236 $ 60 $ 18,439 $ 10,765 $ 5,822,057 $ 5,851,261 The allowance for loan losses is maintained at a level which, in management’s judgment, is adequate to absorb credit losses inherent in the loan portfolio. The amount of the allowance is based on management’s evaluation of the collectability of the loan portfolio, including the nature of the portfolio, credit concentrations, trends in historical loss experience, specific impaired loans, economic conditions and other risks inherent in the portfolio. Allowances for impaired loans are generally determined based on collateral values or the present value of the estimated cash flows. The allowance is increased by a provision for loan losses, which is charged to expense, and reduced by charge-offs, net of recoveries. In addition, various regulatory agencies, as an integral part of their examination process, periodically review the allowance for losses on loans. Such agencies may The methodology utilized for the calculation of the allowance for loan losses is divided into four 450 310 Non-Impaired Loans. second 5 Impaired Loans. may may External Qualitative Factors three Internal Qualitative Factors The following table presents an analysis of the allowance for loan losses by portfolio segment and changes in the allowance for loan losses for the three nine September 30, 2018 September 30, 2017. Commercial, financial and Real estate - Real estate - agricultural construction mortgage Consumer Total (In Thousands) Three Months Ended September 30, 2018 Allowance for loan losses: Balance at June 30, 2018 $ 36,178 $ 4,062 $ 23,438 $ 561 $ 64,239 Charge-offs (3,923 ) - (48 ) (76 ) (4,047 ) Recoveries 52 4 1 6 63 Provision 6,794 (132 ) (62 ) 24 6,624 Balance at September 30, 2018 $ 39,101 $ 3,934 $ 23,329 $ 515 $ 66,879 Three Months Ended September 30, 2017 Allowance for loan losses: Balance at June 30, 2017 $ 29,127 $ 5,138 $ 20,392 $ 402 $ 55,059 Charge-offs (924 ) (16 ) (550 ) (65 ) (1,555 ) Recoveries 67 12 59 14 152 Provision 3,431 197 1,065 110 4,803 Balance at September 30, 2017 $ 31,701 $ 5,331 $ 20,966 $ 461 $ 58,459 Nine Months Ended September 30, 2018 Allowance for loan losses: Balance at December 31, 2017 $ 32,880 $ 4,989 $ 21,022 $ 515 $ 59,406 Charge-offs (6,743 ) - (869 ) (211 ) (7,823 ) Recoveries 229 108 44 31 412 Provision 12,735 (1,163 ) 3,132 180 14,884 Balance at September 30, 2018 $ 39,101 $ 3,934 $ 23,329 $ 515 $ 66,879 Nine Months Ended September 30, 2017 Allowance for loan losses: Balance at December 31, 2016 $ 28,872 $ 5,125 $ 17,504 $ 392 $ 51,893 Charge-offs (6,846 ) (56 ) (922 ) (173 ) (7,997 ) Recoveries 273 42 62 16 393 Provision 9,402 220 4,322 226 14,170 Balance at September 30, 2017 $ 31,701 $ 5,331 $ 20,966 $ 461 $ 58,459 As of September 30, 2018 Allowance for loan losses: Individually Evaluated for Impairment $ 6,297 $ 181 $ 274 $ 49 $ 6,801 Collectively Evaluated for Impairment 32,804 3,753 23,055 466 60,078 Loans: Ending Balance $ 2,478,788 $ 543,611 $ 3,277,525 $ 63,607 $ 6,363,531 Individually Evaluated for Impairment 23,138 1,463 13,083 49 37,733 Collectively Evaluated for Impairment 2,455,650 542,148 3,264,442 63,558 6,325,798 As of December 31, 2017 Allowance for loan losses: Individually Evaluated for Impairment $ 4,276 $ 120 $ 1,163 $ 50 $ 5,609 Collectively Evaluated for Impairment 28,604 4,869 19,859 465 53,797 Loans: Ending Balance $ 2,279,366 $ 580,874 $ 2,928,808 $ 62,213 $ 5,851,261 Individually Evaluated for Impairment 26,447 1,571 12,404 88 40,510 Collectively Evaluated for Impairment 2,252,919 579,303 2,916,404 62,125 5,810,751 The following table presents details of the Company’s impaired loans as of September 30, 2018 December 31, 2017, not For the three months For the nine months ended September 30, ended September 30, September 30, 2018 2018 2018 Interest Interest Unpaid Average Income Average Income Recorded Principal Related Recorded Recognized Recorded Recognized Investment Balance Allowance Investment in Period Investment in Period (In Thousands) With no allowance recorded: Commercial, financial and agricultural $ 4,611 $ 5,502 $ - $ 4,694 $ 50 $ 5,259 $ 162 Real estate - construction 466 469 - 481 7 543 21 Real estate - mortgage: Owner-occupied commercial 1,800 1,982 - 2,008 16 2,311 91 1-4 family mortgage 501 501 - 501 (4 ) 501 1 Other mortgage 5,039 5,039 - 5,052 62 5,083 187 Total real estate - mortgage 7,340 7,522 - 7,561 74 7,895 279 Consumer - - - - - - - Total with no allowance recorded 12,417 13,493 - 12,736 131 13,697 462 With an allowance recorded: Commercial, financial and agricultural 18,527 25,946 6,297 19,041 136 19,035 478 Real estate - construction 997 997 181 997 14 997 42 Real estate - mortgage: Owner-occupied commercial 3,507 3,507 34 3,507 46 3,507 142 1-4 family mortgage 850 850 160 850 12 850 35 Other mortgage 1,386 1,386 80 1,386 15 1,595 51 Total real estate - mortgage 5,743 5,743 274 5,743 73 5,952 228 Consumer 49 49 49 49 1 49 2 Total with allowance recorded 25,316 32,735 6,801 25,830 224 26,033 750 Total Impaired Loans: Commercial, financial and agricultural 23,138 31,448 6,297 23,735 186 24,294 640 Real estate - construction 1,463 1,466 181 1,478 21 1,540 63 Real estate - mortgage: Owner-occupied commercial 5,307 5,489 34 5,515 62 5,818 233 1-4 family mortgage 1,351 1,351 160 1,351 8 1,351 36 Other mortgage 6,425 6,425 80 6,438 77 6,678 238 Total real estate - mortgage 13,083 13,265 274 13,304 147 13,847 507 Consumer 49 49 49 49 1 49 2 Total impaired loans $ 37,733 $ 46,228 $ 6,801 $ 38,566 $ 355 $ 39,730 $ 1,212 December 31, 2017 For the twelve months ended December 31, 2017 Unpaid Average Interest Income Recorded Principal Related Recorded Recognized in Investment Balance Allowance Investment Period (In Thousands) With no allowance recorded: Commercial, financial and agricultural $ 10,036 $ 16,639 $ - $ 16,417 $ 571 Real estate - construction 574 577 - 663 31 Real estate - mortgage: Owner-occupied commercial 2,640 2,806 - 2,875 159 1-4 family mortgage 2,262 2,262 - 2,289 93 Other mortgage 746 746 - 727 44 Total real estate - mortgage 5,648 5,814 - 5,891 296 Consumer 38 39 - 42 3 Total with no allowance recorded 16,296 23,069 - 23,013 901 With an allowance recorded: Commercial, financial and agricultural 16,411 16,992 4,276 17,912 651 Real estate - construction 997 997 120 997 56 Real estate - mortgage: Owner-occupied commercial 3,914 3,914 601 3,801 215 1-4 family mortgage 980 980 281 1,113 54 Other mortgage 1,862 1,862 281 1,862 80 Total real estate - mortgage 6,756 6,756 1,163 6,776 349 Consumer 50 50 50 42 3 Total with allowance recorded 24,214 24,795 5,609 25,727 1,059 Total Impaired Loans: Commercial, financial and agricultural 26,447 33,631 4,276 34,329 1,222 Real estate - construction 1,571 1,574 120 1,660 87 Real estate - mortgage: Owner-occupied commercial 6,554 6,720 601 6,676 374 1-4 family mortgage 3,242 3,242 281 3,402 147 Other mortgage 2,608 2,608 281 2,589 124 Total real estate - mortgage 12,404 12,570 1,163 12,667 645 Consumer 88 89 50 84 6 Total impaired loans $ 40,510 $ 47,864 $ 5,609 $ 48,740 $ 1,960 Troubled Debt Restructurings (“TDR”) at September 30, 2018, December 31, 2017 September 30, 2017 $16.6 $20.6 $16.4 September 30, 2018, $3.7 $4.3 December 31, 2017 $4.0 September 30, 2017. three nine September 30, 2018 2017 Three Months Ended September 30, 2018 Nine Months Ended September 30, 2018 Pre- Post- Pre- Post- Modification Modification Modification Modification Outstanding Outstanding Outstanding Outstanding Number of Recorded Recorded Number of Recorded Recorded Contracts Investment Investment Contracts Investment Investment (In Thousands) Troubled Debt Restructurings Commercial, financial and agricultural 6 $ 7,242 $ 7,242 6 $ 7,242 $ 7,242 Real estate - construction 1 997 997 1 997 997 Real estate - mortgage: Owner-occupied commercial 2 3,664 3,664 2 3,664 3,664 1-4 family mortgage 1 850 850 1 850 850 Other mortgage - - - - - - Total real estate mortgage 3 4,514 4,514 3 4,514 4,514 Consumer - - - - - - 10 $ 12,753 $ 12,753 10 $ 12,753 $ 12,753 Three Months Ended September 30, 2017 Nine Months Ended September 30, 2017 Pre- Post- Pre- Post- Modification Modification Modification Modification Outstanding Outstanding Outstanding Outstanding Number of Recorded Recorded Number of Recorded Recorded Contracts Investment Investment Contracts Investment Investment (In Thousands) Troubled Debt Restructurings Commercial, financial and agricultural - $ - $ - 5 $ 7,205 $ 7,205 Real estate - construction - - - 1 997 997 Real estate - mortgage: Owner-occupied commercial - - - 2 3,664 3,664 1-4 family mortgage - - - 1 850 850 Other mortgage - - - - - - Total real estate mortgage - - - 3 4,514 4,514 Consumer - - - - - - - $ - $ - 9 $ 12,716 $ 12,716 There were no twelve twelve three September 30, 2018 one $0.3 nine September 30, 2018. No twelve three nine September 30, 2017. 90 September 30, 2018,

Note 6 - Employee and Director

Note 6 - Employee and Director Benefits	9 Months Ended
	Sep. 30, 2018
Notes to Financial Statements
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]	NOTE 6 Stock Options At September 30, 2018, $202,000 $684,000 three nine September 30, 2018 $294,000 $916,000 three nine September 30, 2017. The Company’s 2005 6,150,000 2009 5,550,000 ten The Company estimates the fair value of each stock option award using a Black-Scholes-Merton valuation model that uses the assumptions noted in the following table. Expected volatility is based on historical volatilities of the Company’s common stock. The expected term for options granted is based on the short-cut method and represents the period of time that options granted are expected to be outstanding. The risk-free rate for periods within the contractual life of the option is based on the U. S. Treasury yield curve in effect at the time of grant. 2018 2017 Expected volatility 24.72 % 29.00 % Expected dividends 1.06 % 0.44 % Expected term (in years) 6.25 6.25 Risk-free rate 2.67 % 2.08 % The weighted average grant-date fair value of options granted during the nine September 30, 2018 September 30, 2017 $10.98 $11.83, The following table summarizes stock option activity during the nine September 30, 2018 September 30, 2017: Weighted Weighted Average Average Remaining Aggregate Exercise Contractual Intrinsic Shares Price Term (years) Value (In Thousands) Nine Months Ended September 30, 2018: Outstanding at January 1, 2018 1,666,834 $ 10.68 5.5 $ 51,377 Granted 12,750 41.58 9.5 (31 ) Exercised (231,336 ) 4.94 3.1 7,665 Forfeited (33,000 ) 15.00 6.4 758 Outstanding at September 30, 2018 1,415,248 11.79 5.1 $ 38,998 Exercisable at September 30, 2018 693,100 $ 6.78 3.5 $ 22,513 Nine Months Ended September 30, 2017: Outstanding at January 1, 2017 2,026,334 $ 9.00 6.2 $ 57,636 Granted 52,500 37.93 9.4 (35 ) Exercised (359,000 ) 4.97 4.2 11,590 Forfeited (32,000 ) 21.96 8.4 489 Outstanding at September 30, 2017 1,687,834 10.51 5.7 $ 45,136 Exercisable at September 30, 2017 810,736 $ 5.22 4.2 $ 25,971 As of September 30, 2018, $1,514,000 2.2 Restricted Stock The Company periodically grants restricted stock awards that vest upon service conditions. Dividend payments are made during the vesting period. The value of restricted stock is determined to be the current value of the Company’s stock, and this total value will be recognized as compensation expense over the vesting period. As of September 30, 2018, $752,000 1.9 The following table summarizes restricted stock activity during the nine September 30, 2018 2017, Shares Weighted Nine Months Ended September 30, 2018: Non-vested at January 1, 2018 120,676 $ 10.29 Granted 12,850 41.48 Vested (73,700 ) 5.88 Forfeited (750 ) 41.21 Non-vested at September 30, 2018 59,076 19.38 Nine Months Ended September 30, 2017: Non-vested at January 1, 2017 118,676 $ 8.88 Granted 7,000 38.02 Vested (4,200 ) 15.74 Forfeited (800 ) 15.74 Non-vested at September 30, 2017 120,676 10.29

Note 7 - Derivatives

Note 7 - Derivatives	9 Months Ended
	Sep. 30, 2018
Notes to Financial Statements
Derivative Instruments and Hedging Activities Disclosure [Text Block]	NOTE 7 The Company has entered into agreements with secondary market investors to deliver loans on a “best efforts delivery” basis. When a rate is committed to a borrower, it is based on the best price that day and locked with the investor for the customer for a 30 not no September 30, 2018 December 31, 2017 not

Note 8 - Recently Adopted Accou

Note 8 - Recently Adopted Accounting Pronouncements	9 Months Ended
	Sep. 30, 2018
Notes to Financial Statements
New Accounting Pronouncements and Changes in Accounting Principles [Text Block]	NOTE 8 In February 2018, 2018 02, Income Statement - Reporting Comprehensive Income 220 Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income 2017. December 15, 2018 December 31, 2017. $43,000 21% In May 2014, 2014 09, Revenue from Contracts with Customers (Topic 606 January 1, 2018. 2014 09 not not 2014 09. 2014 09, not not In January 2016, 2016 01, Financial Instruments Overall (Topic 825 2016 01: January 1, 2018. no 10

Note 9 - Recent Accounting Pron

Note 9 - Recent Accounting Pronouncements	9 Months Ended
	Sep. 30, 2018
Notes to Financial Statements
Accounting Changes and Error Corrections [Text Block]	NOTE 9 In February 2016, 2016 02, Leases (Topic 842 December 15, 2018. January 2018, not 2016 02 September 30, 2018, $17.4 2, 10 not not In June 2016, 2016 13, Financial Instruments-Credit Losses (Topic 326 December 15, 2019, December 15, 2018. third In March 2017, 2017 08, Receivables – Nonrefundable Fees and Other Costs (Subtopic 310 20 not December 15, 2018. not first In June 2018, 2018 06, Compensation – Stock Compensation (Topic 718 718, 505 50, December 15, 2018. no 606, January 1, 2019. not not In July 2018, 2018 09, Codification Improvements. 220 10, 470 50, 480 10, 718 740, 805 740, 815 10, 820 10, 940 405, 962 325, not December 15, 2018, not In July 2018, 2018 10, Codification Improvements to Topic 842, 842 2016 02, 840, 840, 842, 2018 10, 842. not 842, 842. not 842 In July 2018, 2018 11, Leases (Topic 842 840, not 606 606. 842. not 842 No. 2018 11, No. 2016 02. No. 2018 11 not In July 2018, 2018 13, Fair Value Measurement (Topic 820 This ASU eliminates, adds and modifies certain disclosure requirements for fair value measurements. Among the changes, entities will no 1 2 3 No. 2018 13 December 15, 2019; No. 2018 13 not In August 2018, 2018 15, Intangibles-Goodwill and Other- Internal-Use Software (Subtopic 350 40 not December 15, 2019. December 15, 2020, December 15, 2021. not

Note 10 - Fair Value Measuremen

Note 10 - Fair Value Measurement	9 Months Ended
	Sep. 30, 2018
Notes to Financial Statements
Fair Value Disclosures [Text Block]	NOTE 10 Measurement of fair value under U.S. GAAP establishes a hierarchy that prioritizes observable and unobservable inputs used to measure fair value, as of the measurement date, into three Level 1: 1 Level 2: not Level 3: no 3 In determining fair value, the Company utilizes valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs to the extent possible and also considers counterparty credit risk in its assessment of fair value. Debt Securities 1 1 not may 2 1 2 not 3 Impaired Loans not not 820 10 3 $4,893,000 $8,782,000 three nine September 30, 2018, $2,660,000 $7,967,000 three nine September 30, 2017, Other Real Estate Owned and repossessed assets not 3 $228,000 $581,000 three nine September 30, 2018, $20,000 $56,000 three nine September 30, 2017, 3 There was one $360,000 September 30, 2018 none December 31, 2017. The following table presents the Company’s financial assets and financial liabilities carried at fair value on a recurring basis as of September 30, 2018 December 31, 2017: Fair Value Measurements at September 30, 2018 Using Quoted Prices in Active Markets Significant Other Significant for Identical Observable Inputs Unobservable Assets (Level 1) (Level 2) Inputs (Level 3) Total Assets Measured on a Recurring Basis: (In Thousands) Available-for-sale debt securities: U.S. Treasury and government agencies $ - $ 74,278 $ - $ 74,278 Mortgage-backed securities - 298,824 - 298,824 State and municipal securities - 112,698 - 112,698 Corporate debt - 85,696 6,525 92,221 Total assets at fair value $ - $ 571,496 $ 6,525 $ 578,021 Fair Value Measurements at December 31, 2017 Using Quoted Prices in Active Markets Significant Other Significant for Identical Observable Inputs Unobservable Assets (Level 1) (Level 2) Inputs (Level 3) Total Assets Measured on a Recurring Basis: (In Thousands) Available-for-sale debt securities: U.S. Treasury and government agencies $ - $ 55,356 $ - $ 55,356 Mortgage-backed securities - 276,498 - 276,498 State and municipal securities - 134,849 - 134,849 Corporate debt - 64,877 6,500 71,377 Total assets at fair value $ - $ 531,580 $ 6,500 $ 538,080 The following table presents the Company’s financial assets and financial liabilities carried at fair value on a nonrecurring basis as of September 30, 2018 December 31, 2017: Fair Value Measurements at September 30, 2018 Quoted Prices in Significant Other Significant Total Assets Measured on a Nonrecurring Basis: (In Thousands) Impaired loans $ - $ - $ 30,932 $ 30,932 Other real estate owned and repossessed assets - - 5,714 5,714 Total assets at fair value $ - $ - $ 36,646 $ 36,646 Fair Value Measurements at December 31, 2017 Quoted Prices in Significant Other Significant Total Assets Measured on a Nonrecurring Basis: (In Thousands) Impaired loans $ - $ - $ 34,901 $ 34,901 Other real estate owned and repossessed assets - - 6,701 6,701 Total assets at fair value $ - $ - $ 41,602 $ 41,602 The fair value of a financial instrument is the current amount that would be exchanged in a sale 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 may not The following methods and assumptions were used by the Company in estimating its fair value disclosures for financial instruments: Debt securities: 1 1 not may 2 1 2 not 3 Equity securities: 1 Mortgage loans held for sale: 30 Bank owned life insurance contracts: September 30, 2018 December 31, 2017 Carrying Carrying Amount Fair Value Amount Fair Value (In Thousands) Financial Assets: Level 1 inputs: Cash and due from banks $ 136,788 $ 136,788 $ 238,062 $ 238,062 Level 2 inputs: Available for sale debt securities 571,496 571,496 531,580 531,580 Equity securities 889 889 1,034 1,034 Federal funds sold 229,033 229,033 239,524 239,524 Mortgage loans held for sale 5,277 5,277 4,459 4,459 Bank-owned life insurance contracts 129,869 129,869 127,519 127,519 Level 3 inputs: Available for sale debt securities 6,525 6,525 6,500 6,500 Held to maturity debt securities 250 250 250 250 Loans, net 6,265,720 6,174,697 5,756,954 5,712,441 Financial liabilities: Level 2 inputs: Deposits $ 6,505,351 $ 6,497,244 $ 6,091,674 $ 6,086,085 Federal funds purchased 246,094 246,094 301,797 301,797 Other borrowings 64,657 64,601 64,832 65,921

Note 11 - Subsequent Events

Note 11 - Subsequent Events	9 Months Ended
	Sep. 30, 2018
Notes to Financial Statements
Subsequent Events [Text Block]	NOTE 11 The Company has evaluated all subsequent events through the date of this filing to ensure that this Form 10 September 30, 2018, September 30, 2018 not

Note 3 - Earnings Per Common _2

Note 3 - Earnings Per Common Share (Tables)	9 Months Ended
	Sep. 30, 2018
Notes Tables
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 (In Thousands, Except Shares and Per Share Data) Earnings per common share Weighted average common shares outstanding 53,171,144 52,950,644 53,134,861 52,854,332 Net income available to common stockholders $ 34,560 $ 25,259 $ 100,672 $ 71,911 Basic earnings per common share $ 0.65 $ 0.48 $ 1.89 $ 1.36 Weighted average common shares outstanding 53,171,144 52,950,644 53,134,861 52,854,332 Dilutive effects of assumed conversions and exercise of stock options and warrants 1,020,078 1,149,028 1,055,383 1,256,580 Weighted average common and dilutive potential common shares outstanding 54,191,222 54,099,672 54,190,244 54,110,912 Net income available to common stockholders $ 34,560 $ 25,259 $ 100,672 $ 71,911 Diluted earnings per common share $ 0.64 $ 0.47 $ 1.86 $ 1.33

Note 4 - Securities (Tables)

Note 4 - Securities (Tables)	9 Months Ended
	Sep. 30, 2018
Notes Tables
Unrealized Gain (Loss) on Investments [Table Text Block]	Gross Gross Amortized Unrealized Unrealized Market Cost Gain Loss Value September 30, 2018 (In Thousands) Securities Available for Sale U.S. Treasury and government sponsored agencies $ 75,477 $ 2 $ (1,201 ) $ 74,278 Mortgage-backed securities 308,439 407 (10,022 ) 298,824 State and municipal securities 113,613 234 (1,149 ) 112,698 Corporate debt 92,916 257 (952 ) 92,221 Total 590,445 900 (13,324 ) 578,021 Securities Held to Maturity State and municipal securities 250 - - 250 Total $ 250 $ - $ - $ 250 December 31, 2017 Securities Available for Sale U.S. Treasury and government sponsored agencies $ 55,567 $ 38 $ (249 ) $ 55,356 Mortgage-backed securities 278,177 1,006 (2,685 ) 276,498 State and municipal securities 134,641 761 (553 ) 134,849 Corporate debt 69,996 1,416 (35 ) 71,377 Total 538,381 3,221 (3,522 ) 538,080 Securities Held to Maturity State and municipal securities 250 - - 250 Total $ 250 $ - $ - $ 250
Fair Value, Assets Measured on Recurring Basis [Table Text Block]	September 30, 2018 December 31, 2017 Amortized Fair Value Amortized Fair Value (In thousands) Debt securities available for sale Due within one year $ 49,809 $ 49,722 $ 22,122 $ 22,172 Due from one to five years 213,202 210,472 160,773 160,563 Due from five to ten years 17,141 17,106 73,362 74,684 Due after ten years 1,854 1,897 3,947 4,163 Mortgage-backed securities 308,439 298,824 278,177 276,498 $ 590,445 $ 578,021 $ 538,381 $ 538,080 Debt securities held to maturity Due from one to five years $ 250 $ 250 $ 250 $ 250 $ 250 $ 250 $ 250 $ 250
Gain (Loss) on Securities [Table Text Block]	Less Than Twelve Months Twelve Months or More Total Gross Gross Gross Unrealized Unrealized Unrealized Losses Fair Value Losses Fair Value Losses Fair Value (In Thousands) September 30, 2018 U.S. Treasury and government sponsored agencies $ (736 ) $ 62,833 $ (465 ) $ 11,311 $ (1,201 ) $ 74,144 Mortgage-backed securities (3,566 ) 141,107 (6,456 ) 144,336 (10,022 ) 285,443 State and municipal securities (613 ) 69,646 (536 ) 20,506 (1,149 ) 90,152 Corporate debt (952 ) 65,456 - - (952 ) 65,456 Total $ (5,867 ) $ 339,042 $ (7,457 ) $ 176,153 $ (13,324 ) $ 515,195 December 31, 2017 U.S. Treasury and government sponsored agencies $ (151 ) $ 33,401 $ (98 ) $ 2,926 $ (249 ) $ 36,327 Mortgage-backed securities (986 ) 140,432 (1,699 ) 75,903 (2,685 ) 216,335 State and municipal securities (450 ) 66,637 (103 ) 6,648 (553 ) 73,285 Corporate debt (35 ) 6,955 - - (35 ) 6,955 Total $ (1,622 ) $ 247,425 $ (1,900 ) $ 85,477 $ (3,522 ) $ 332,902

Note 5 - Loans (Tables)

Note 5 - Loans (Tables)	9 Months Ended
	Sep. 30, 2018
Notes Tables
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]	September 30, December 31, 2018 2017 (Dollars In Thousands) Commercial, financial and agricultural $ 2,478,788 $ 2,279,366 Real estate - construction 543,611 580,874 Real estate - mortgage: Owner-occupied commercial 1,430,111 1,328,666 1-4 family mortgage 610,460 603,063 Other mortgage 1,236,954 997,079 Subtotal: Real estate - mortgage 3,277,525 2,928,808 Consumer 63,607 62,213 Total Loans 6,363,531 5,851,261 Less: Allowance for loan losses (66,879 ) (59,406 ) Net Loans $ 6,296,652 $ 5,791,855 Commercial, financial and agricultural 38.95 % 38.96 % Real estate - construction 8.54 % 9.93 % Real estate - mortgage: Owner-occupied commercial 22.47 % 22.71 % 1-4 family mortgage 9.60 % 10.30 % Other mortgage 19.44 % 17.04 % Subtotal: Real estate - mortgage 51.51 % 50.05 % Consumer 1.00 % 1.06 % Total Loans 100.00 % 100.00 %
Financing Receivable Credit Quality Indicators [Table Text Block]	Special September 30, 2018 Pass Mention Substandard Doubtful Total (In Thousands) Commercial, financial and agricultural $ 2,413,994 $ 41,656 $ 23,138 $ - $ 2,478,788 Real estate - construction 536,789 5,400 1,422 - 543,611 Real estate - mortgage: Owner-occupied commercial 1,396,503 30,101 3,507 - 1,430,111 1-4 family mortgage 606,509 2,600 1,351 - 610,460 Other mortgage 1,210,063 20,466 6,425 - 1,236,954 Total real estate mortgage 3,213,075 53,167 11,283 - 3,277,525 Consumer 63,555 3 49 - 63,607 Total $ 6,227,413 $ 100,226 $ 35,892 $ - $ 6,363,531 Special December 31, 2017 Pass Mention Substandard Doubtful Total (In Thousands) Commercial, financial and agricultural $ 2,225,084 $ 27,835 $ 26,447 $ - $ 2,279,366 Real estate - construction 572,657 6,691 1,526 - 580,874 Real estate - mortgage: Owner-occupied commercial 1,317,113 7,333 4,220 - 1,328,666 1-4 family mortgage 598,222 1,599 3,242 - 603,063 Other mortgage 976,348 18,122 2,609 - 997,079 Total real estate mortgage 2,891,683 27,054 10,071 - 2,928,808 Consumer 62,083 42 88 - 62,213 Total $ 5,751,507 $ 61,622 $ 38,132 $ - $ 5,851,261
Financing Receivable, Credit Substitute, Credit Quality Indicator [Table Text Block]	September 30, 2018 Performing Nonperforming Total (In Thousands) Commercial, financial and agricultural $ 2,469,980 $ 8,808 $ 2,478,788 Real estate - construction 543,611 - 543,611 Real estate - mortgage: Owner-occupied commercial 1,429,958 153 1,430,111 1-4 family mortgage 609,658 802 610,460 Other mortgage 1,231,915 5,039 1,236,954 Total real estate mortgage 3,271,531 5,994 3,277,525 Consumer 63,542 65 63,607 Total $ 6,348,664 $ 14,867 $ 6,363,531 December 31, 2017 Performing Nonperforming Total (In Thousands) Commercial, financial and agricultural $ 2,269,642 $ 9,724 $ 2,279,366 Real estate - construction 580,874 - 580,874 Real estate - mortgage: Owner-occupied commercial 1,328,110 556 1,328,666 1-4 family mortgage 602,604 459 603,063 Other mortgage 997,079 - 997,079 Total real estate mortgage 2,927,793 1,015 2,928,808 Consumer 62,127 86 62,213 Total $ 5,840,436 $ 10,825 $ 5,851,261
Past Due Financing Receivables [Table Text Block]	September 30, 2018 Past Due Status (Accruing Loans) Total Past 30-59 Days 60-89 Days 90+ Days Due Non-Accrual Current Total Loans (In Thousands) Commercial, financial and agricultural $ 513 $ 9,147 $ 309 $ 9,969 $ 8,499 $ 2,460,320 $ 2,478,788 Real estate - construction 538 997 - 1,535 - 542,076 543,611 Real estate - mortgage: Owner-occupied commercial 375 3,941 - 4,316 153 1,425,642 1,430,111 1-4 family mortgage 150 970 301 1,421 501 608,538 610,460 Other mortgage - 63 5,039 5,102 - 1,231,852 1,236,954 Total real estate - mortgage 525 4,974 5,340 10,839 654 3,266,032 3,277,525 Consumer 173 24 65 262 - 63,345 63,607 Total $ 1,749 $ 15,142 $ 5,714 $ 22,605 $ 9,153 $ 6,331,773 $ 6,363,531 December 31, 2017 Past Due Status (Accruing Loans) Total Past 30-59 Days 60-89 Days 90+ Days Due Non-Accrual Current Total Loans (In Thousands) Commercial, financial and agricultural $ 1,410 $ 5,702 $ 12 $ 7,124 $ 9,712 $ 2,262,530 $ 2,279,366 Real estate - construction 56 997 - 1,053 - 579,821 580,874 Real estate - mortgage: Owner-occupied commercial - 3,664 - 3,664 556 1,324,446 1,328,666 1-4 family mortgage 430 850 - 1,280 459 601,324 603,063 Other mortgage 5,116 - - 5,116 - 991,963 997,079 Total real estate - mortgage 5,546 4,514 - 10,060 1,015 2,917,733 2,928,808 Consumer 131 23 48 202 38 61,973 62,213 Total $ 7,143 $ 11,236 $ 60 $ 18,439 $ 10,765 $ 5,822,057 $ 5,851,261
Allowance for Credit Losses on Financing Receivables [Table Text Block]	Commercial, financial and Real estate - Real estate - agricultural construction mortgage Consumer Total (In Thousands) Three Months Ended September 30, 2018 Allowance for loan losses: Balance at June 30, 2018 $ 36,178 $ 4,062 $ 23,438 $ 561 $ 64,239 Charge-offs (3,923 ) - (48 ) (76 ) (4,047 ) Recoveries 52 4 1 6 63 Provision 6,794 (132 ) (62 ) 24 6,624 Balance at September 30, 2018 $ 39,101 $ 3,934 $ 23,329 $ 515 $ 66,879 Three Months Ended September 30, 2017 Allowance for loan losses: Balance at June 30, 2017 $ 29,127 $ 5,138 $ 20,392 $ 402 $ 55,059 Charge-offs (924 ) (16 ) (550 ) (65 ) (1,555 ) Recoveries 67 12 59 14 152 Provision 3,431 197 1,065 110 4,803 Balance at September 30, 2017 $ 31,701 $ 5,331 $ 20,966 $ 461 $ 58,459 Nine Months Ended September 30, 2018 Allowance for loan losses: Balance at December 31, 2017 $ 32,880 $ 4,989 $ 21,022 $ 515 $ 59,406 Charge-offs (6,743 ) - (869 ) (211 ) (7,823 ) Recoveries 229 108 44 31 412 Provision 12,735 (1,163 ) 3,132 180 14,884 Balance at September 30, 2018 $ 39,101 $ 3,934 $ 23,329 $ 515 $ 66,879 Nine Months Ended September 30, 2017 Allowance for loan losses: Balance at December 31, 2016 $ 28,872 $ 5,125 $ 17,504 $ 392 $ 51,893 Charge-offs (6,846 ) (56 ) (922 ) (173 ) (7,997 ) Recoveries 273 42 62 16 393 Provision 9,402 220 4,322 226 14,170 Balance at September 30, 2017 $ 31,701 $ 5,331 $ 20,966 $ 461 $ 58,459 As of September 30, 2018 Allowance for loan losses: Individually Evaluated for Impairment $ 6,297 $ 181 $ 274 $ 49 $ 6,801 Collectively Evaluated for Impairment 32,804 3,753 23,055 466 60,078 Loans: Ending Balance $ 2,478,788 $ 543,611 $ 3,277,525 $ 63,607 $ 6,363,531 Individually Evaluated for Impairment 23,138 1,463 13,083 49 37,733 Collectively Evaluated for Impairment 2,455,650 542,148 3,264,442 63,558 6,325,798 As of December 31, 2017 Allowance for loan losses: Individually Evaluated for Impairment $ 4,276 $ 120 $ 1,163 $ 50 $ 5,609 Collectively Evaluated for Impairment 28,604 4,869 19,859 465 53,797 Loans: Ending Balance $ 2,279,366 $ 580,874 $ 2,928,808 $ 62,213 $ 5,851,261 Individually Evaluated for Impairment 26,447 1,571 12,404 88 40,510 Collectively Evaluated for Impairment 2,252,919 579,303 2,916,404 62,125 5,810,751
Impaired Financing Receivables [Table Text Block]	For the three months For the nine months ended September 30, ended September 30, September 30, 2018 2018 2018 Interest Interest Unpaid Average Income Average Income Recorded Principal Related Recorded Recognized Recorded Recognized Investment Balance Allowance Investment in Period Investment in Period (In Thousands) With no allowance recorded: Commercial, financial and agricultural $ 4,611 $ 5,502 $ - $ 4,694 $ 50 $ 5,259 $ 162 Real estate - construction 466 469 - 481 7 543 21 Real estate - mortgage: Owner-occupied commercial 1,800 1,982 - 2,008 16 2,311 91 1-4 family mortgage 501 501 - 501 (4 ) 501 1 Other mortgage 5,039 5,039 - 5,052 62 5,083 187 Total real estate - mortgage 7,340 7,522 - 7,561 74 7,895 279 Consumer - - - - - - - Total with no allowance recorded 12,417 13,493 - 12,736 131 13,697 462 With an allowance recorded: Commercial, financial and agricultural 18,527 25,946 6,297 19,041 136 19,035 478 Real estate - construction 997 997 181 997 14 997 42 Real estate - mortgage: Owner-occupied commercial 3,507 3,507 34 3,507 46 3,507 142 1-4 family mortgage 850 850 160 850 12 850 35 Other mortgage 1,386 1,386 80 1,386 15 1,595 51 Total real estate - mortgage 5,743 5,743 274 5,743 73 5,952 228 Consumer 49 49 49 49 1 49 2 Total with allowance recorded 25,316 32,735 6,801 25,830 224 26,033 750 Total Impaired Loans: Commercial, financial and agricultural 23,138 31,448 6,297 23,735 186 24,294 640 Real estate - construction 1,463 1,466 181 1,478 21 1,540 63 Real estate - mortgage: Owner-occupied commercial 5,307 5,489 34 5,515 62 5,818 233 1-4 family mortgage 1,351 1,351 160 1,351 8 1,351 36 Other mortgage 6,425 6,425 80 6,438 77 6,678 238 Total real estate - mortgage 13,083 13,265 274 13,304 147 13,847 507 Consumer 49 49 49 49 1 49 2 Total impaired loans $ 37,733 $ 46,228 $ 6,801 $ 38,566 $ 355 $ 39,730 $ 1,212 December 31, 2017 For the twelve months ended December 31, 2017 Unpaid Average Interest Income Recorded Principal Related Recorded Recognized in Investment Balance Allowance Investment Period (In Thousands) With no allowance recorded: Commercial, financial and agricultural $ 10,036 $ 16,639 $ - $ 16,417 $ 571 Real estate - construction 574 577 - 663 31 Real estate - mortgage: Owner-occupied commercial 2,640 2,806 - 2,875 159 1-4 family mortgage 2,262 2,262 - 2,289 93 Other mortgage 746 746 - 727 44 Total real estate - mortgage 5,648 5,814 - 5,891 296 Consumer 38 39 - 42 3 Total with no allowance recorded 16,296 23,069 - 23,013 901 With an allowance recorded: Commercial, financial and agricultural 16,411 16,992 4,276 17,912 651 Real estate - construction 997 997 120 997 56 Real estate - mortgage: Owner-occupied commercial 3,914 3,914 601 3,801 215 1-4 family mortgage 980 980 281 1,113 54 Other mortgage 1,862 1,862 281 1,862 80 Total real estate - mortgage 6,756 6,756 1,163 6,776 349 Consumer 50 50 50 42 3 Total with allowance recorded 24,214 24,795 5,609 25,727 1,059 Total Impaired Loans: Commercial, financial and agricultural 26,447 33,631 4,276 34,329 1,222 Real estate - construction 1,571 1,574 120 1,660 87 Real estate - mortgage: Owner-occupied commercial 6,554 6,720 601 6,676 374 1-4 family mortgage 3,242 3,242 281 3,402 147 Other mortgage 2,608 2,608 281 2,589 124 Total real estate - mortgage 12,404 12,570 1,163 12,667 645 Consumer 88 89 50 84 6 Total impaired loans $ 40,510 $ 47,864 $ 5,609 $ 48,740 $ 1,960
Troubled Debt Restructurings on Financing Receivables [Table Text Block]	Three Months Ended September 30, 2018 Nine Months Ended September 30, 2018 Pre- Post- Pre- Post- Modification Modification Modification Modification Outstanding Outstanding Outstanding Outstanding Number of Recorded Recorded Number of Recorded Recorded Contracts Investment Investment Contracts Investment Investment (In Thousands) Troubled Debt Restructurings Commercial, financial and agricultural 6 $ 7,242 $ 7,242 6 $ 7,242 $ 7,242 Real estate - construction 1 997 997 1 997 997 Real estate - mortgage: Owner-occupied commercial 2 3,664 3,664 2 3,664 3,664 1-4 family mortgage 1 850 850 1 850 850 Other mortgage - - - - - - Total real estate mortgage 3 4,514 4,514 3 4,514 4,514 Consumer - - - - - - 10 $ 12,753 $ 12,753 10 $ 12,753 $ 12,753 Three Months Ended September 30, 2017 Nine Months Ended September 30, 2017 Pre- Post- Pre- Post- Modification Modification Modification Modification Outstanding Outstanding Outstanding Outstanding Number of Recorded Recorded Number of Recorded Recorded Contracts Investment Investment Contracts Investment Investment (In Thousands) Troubled Debt Restructurings Commercial, financial and agricultural - $ - $ - 5 $ 7,205 $ 7,205 Real estate - construction - - - 1 997 997 Real estate - mortgage: Owner-occupied commercial - - - 2 3,664 3,664 1-4 family mortgage - - - 1 850 850 Other mortgage - - - - - - Total real estate mortgage - - - 3 4,514 4,514 Consumer - - - - - - - $ - $ - 9 $ 12,716 $ 12,716

Note 6 - Employee and Directo_2

Note 6 - Employee and Director Benefits (Tables)	9 Months Ended
	Sep. 30, 2018
Notes Tables
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]	2018 2017 Expected volatility 24.72 % 29.00 % Expected dividends 1.06 % 0.44 % Expected term (in years) 6.25 6.25 Risk-free rate 2.67 % 2.08 %
Share-based Compensation, Stock Options, Activity [Table Text Block]	Weighted Weighted Average Average Remaining Aggregate Exercise Contractual Intrinsic Shares Price Term (years) Value (In Thousands) Nine Months Ended September 30, 2018: Outstanding at January 1, 2018 1,666,834 $ 10.68 5.5 $ 51,377 Granted 12,750 41.58 9.5 (31 ) Exercised (231,336 ) 4.94 3.1 7,665 Forfeited (33,000 ) 15.00 6.4 758 Outstanding at September 30, 2018 1,415,248 11.79 5.1 $ 38,998 Exercisable at September 30, 2018 693,100 $ 6.78 3.5 $ 22,513 Nine Months Ended September 30, 2017: Outstanding at January 1, 2017 2,026,334 $ 9.00 6.2 $ 57,636 Granted 52,500 37.93 9.4 (35 ) Exercised (359,000 ) 4.97 4.2 11,590 Forfeited (32,000 ) 21.96 8.4 489 Outstanding at September 30, 2017 1,687,834 10.51 5.7 $ 45,136 Exercisable at September 30, 2017 810,736 $ 5.22 4.2 $ 25,971
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]	Shares Weighted Nine Months Ended September 30, 2018: Non-vested at January 1, 2018 120,676 $ 10.29 Granted 12,850 41.48 Vested (73,700 ) 5.88 Forfeited (750 ) 41.21 Non-vested at September 30, 2018 59,076 19.38 Nine Months Ended September 30, 2017: Non-vested at January 1, 2017 118,676 $ 8.88 Granted 7,000 38.02 Vested (4,200 ) 15.74 Forfeited (800 ) 15.74 Non-vested at September 30, 2017 120,676 10.29

Note 10 - Fair Value Measurem_2

Note 10 - Fair Value Measurement (Tables)	9 Months Ended
	Sep. 30, 2018
Notes Tables
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]	Fair Value Measurements at September 30, 2018 Using Quoted Prices in Active Markets Significant Other Significant for Identical Observable Inputs Unobservable Assets (Level 1) (Level 2) Inputs (Level 3) Total Assets Measured on a Recurring Basis: (In Thousands) Available-for-sale debt securities: U.S. Treasury and government agencies $ - $ 74,278 $ - $ 74,278 Mortgage-backed securities - 298,824 - 298,824 State and municipal securities - 112,698 - 112,698 Corporate debt - 85,696 6,525 92,221 Total assets at fair value $ - $ 571,496 $ 6,525 $ 578,021 Fair Value Measurements at December 31, 2017 Using Quoted Prices in Active Markets Significant Other Significant for Identical Observable Inputs Unobservable Assets (Level 1) (Level 2) Inputs (Level 3) Total Assets Measured on a Recurring Basis: (In Thousands) Available-for-sale debt securities: U.S. Treasury and government agencies $ - $ 55,356 $ - $ 55,356 Mortgage-backed securities - 276,498 - 276,498 State and municipal securities - 134,849 - 134,849 Corporate debt - 64,877 6,500 71,377 Total assets at fair value $ - $ 531,580 $ 6,500 $ 538,080
Fair Value Measurements, Nonrecurring [Table Text Block]	Fair Value Measurements at September 30, 2018 Quoted Prices in Significant Other Significant Total Assets Measured on a Nonrecurring Basis: (In Thousands) Impaired loans $ - $ - $ 30,932 $ 30,932 Other real estate owned and repossessed assets - - 5,714 5,714 Total assets at fair value $ - $ - $ 36,646 $ 36,646 Fair Value Measurements at December 31, 2017 Quoted Prices in Significant Other Significant Total Assets Measured on a Nonrecurring Basis: (In Thousands) Impaired loans $ - $ - $ 34,901 $ 34,901 Other real estate owned and repossessed assets - - 6,701 6,701 Total assets at fair value $ - $ - $ 41,602 $ 41,602
Fair Value, by Balance Sheet Grouping [Table Text Block]	September 30, 2018 December 31, 2017 Carrying Carrying Amount Fair Value Amount Fair Value (In Thousands) Financial Assets: Level 1 inputs: Cash and due from banks $ 136,788 $ 136,788 $ 238,062 $ 238,062 Level 2 inputs: Available for sale debt securities 571,496 571,496 531,580 531,580 Equity securities 889 889 1,034 1,034 Federal funds sold 229,033 229,033 239,524 239,524 Mortgage loans held for sale 5,277 5,277 4,459 4,459 Bank-owned life insurance contracts 129,869 129,869 127,519 127,519 Level 3 inputs: Available for sale debt securities 6,525 6,525 6,500 6,500 Held to maturity debt securities 250 250 250 250 Loans, net 6,265,720 6,174,697 5,756,954 5,712,441 Financial liabilities: Level 2 inputs: Deposits $ 6,505,351 $ 6,497,244 $ 6,091,674 $ 6,086,085 Federal funds purchased 246,094 246,094 301,797 301,797 Other borrowings 64,657 64,601 64,832 65,921

Note 3 - Earnings Per Common _3

Note 3 - Earnings Per Common Share - Summary of Earnings Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Weighted average common shares outstanding (in shares)	53,171,144	52,950,644	53,134,861	52,854,332
Net income available to common stockholders	$ 34,560	$ 25,259	$ 100,672	$ 71,911
Basic earnings per common share (in dollars per share)	$ 0.65	$ 0.48	$ 1.89	$ 1.36
Dilutive effects of assumed conversions and exercise of stock options and warrants (in shares)	1,020,078	1,149,028	1,055,383	1,256,580
Weighted average common and dilutive potential common shares outstanding (in shares)	54,191,222	54,099,672	54,190,244	54,110,912
Net income available to common stockholders	$ 34,560	$ 25,259	$ 100,672	$ 71,911
Diluted earnings per common share (in dollars per share)	$ 0.64	$ 0.47	$ 1.86	$ 1.33

Note 4 - Securities (Details Te

Note 4 - Securities (Details Textual) $ in Thousands	9 Months Ended
	Sep. 30, 2018USD ($)
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year	197
Available for Sale Securities Debt Securities, Number of Positions	758
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities, Total	$ 0

Note 4 - Securities - Amortized

Note 4 - Securities - Amortized Cost and Fair Value of Available-for-sale and Held-to-maturity Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Available for sale, amortized cost	$ 590,445	$ 538,381
Available for sale, gross unrealized gain	900	3,221
Available for sale, gross unrealized loss	(13,324)	(3,522)
Available for sale, fair value	578,021	538,080
Held to maturity, amortized cost	250	250
Held to maturity, gross unrealized gain
Held to maturity, gross unrealized loss
Held to maturity debt securities, fair value	250	250	[1]
Held to maturity, gross unrealized loss
US Treasury and Government [Member]
Available for sale, amortized cost	75,477	55,567
Available for sale, gross unrealized gain	2	38
Available for sale, gross unrealized loss	(1,201)	(249)
Available for sale, fair value	74,278	55,356
Collateralized Mortgage Backed Securities [Member]
Available for sale, amortized cost	308,439	278,177
Available for sale, gross unrealized gain	407	1,006
Available for sale, gross unrealized loss	(10,022)	(2,685)
Available for sale, fair value	298,824	276,498
US States and Political Subdivisions Debt Securities [Member]
Available for sale, amortized cost	113,613	134,641
Available for sale, gross unrealized gain	234	761
Available for sale, gross unrealized loss	(1,149)	(553)
Available for sale, fair value	112,698	134,849
Held to maturity, amortized cost	250	250
Held to maturity, gross unrealized gain
Held to maturity, gross unrealized loss
Held to maturity debt securities, fair value	250	250
Held to maturity, gross unrealized loss
Corporate Debt Securities [Member]
Available for sale, amortized cost	92,916	69,996
Available for sale, gross unrealized gain	257	1,416
Available for sale, gross unrealized loss	(952)	(35)
Available for sale, fair value	$ 92,221	$ 71,377
[1]	Derived from audited financial statements.

Note 4 - Securities - Amortiz_2

Note 4 - Securities - Amortized Cost and Fair Value of Contractual Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Available for sale, amortized cost	$ 590,445	$ 538,381
Available for sale, fair value	578,021	538,080
Held to maturity, amortized cost	250	250
Held to maturity debt securities, fair value	250	250	[1]
Due Within One Year [Member]
Available for sale, amortized cost	49,809	22,122
Available for sale, fair value	49,722	22,172
Due from One to Five Years [Member]
Available for sale, amortized cost	213,202	160,773
Available for sale, fair value	210,472	160,563
Held to maturity, amortized cost	250	250
Held to maturity debt securities, fair value	250	250
Due from Five to Ten Years [Member]
Available for sale, amortized cost	17,141	73,362
Available for sale, fair value	17,106	74,684
Due After Ten Years [Member]
Available for sale, amortized cost	1,854	3,947
Available for sale, fair value	1,897	4,163
Collateralized Mortgage Backed Securities [Member]
Available for sale, amortized cost	308,439	278,177
Available for sale, fair value	$ 298,824	$ 276,498
[1]	Derived from audited financial statements.

Note 4 - Securities - Investmen

Note 4 - Securities - Investment Securities Continuous Unrealized Loss Position (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Less Than Twelve Months, Gross Unrealized Losses	$ (5,867)	$ (1,622)
Less Than Twelve Months, Fair Value	339,042	247,425
Twelve Months or More, Gross Unrealized Losses	(7,457)	(1,900)
Twelve Months or More, Fair Value	176,153	85,477
Total, Gross Unrealized Losses	(13,324)	(3,522)
Total, Fair Value	515,195	332,902
US Treasury and Government [Member]
Less Than Twelve Months, Gross Unrealized Losses	(736)	(151)
Less Than Twelve Months, Fair Value	62,833	33,401
Twelve Months or More, Gross Unrealized Losses	(465)	(98)
Twelve Months or More, Fair Value	11,311	2,926
Total, Gross Unrealized Losses	(1,201)	(249)
Total, Fair Value	74,144	36,327
Collateralized Mortgage Backed Securities [Member]
Less Than Twelve Months, Gross Unrealized Losses	(3,566)	(986)
Less Than Twelve Months, Fair Value	141,107	140,432
Twelve Months or More, Gross Unrealized Losses	(6,456)	(1,699)
Twelve Months or More, Fair Value	144,336	75,903
Total, Gross Unrealized Losses	(10,022)	(2,685)
Total, Fair Value	285,443	216,335
US States and Political Subdivisions Debt Securities [Member]
Less Than Twelve Months, Gross Unrealized Losses	(613)	(450)
Less Than Twelve Months, Fair Value	69,646	66,637
Twelve Months or More, Gross Unrealized Losses	(536)	(103)
Twelve Months or More, Fair Value	20,506	6,648
Total, Gross Unrealized Losses	(1,149)	(553)
Total, Fair Value	90,152	73,285
Corporate Debt Securities [Member]
Less Than Twelve Months, Gross Unrealized Losses	(952)	(35)
Less Than Twelve Months, Fair Value	65,456	6,955
Twelve Months or More, Gross Unrealized Losses
Twelve Months or More, Fair Value
Total, Gross Unrealized Losses	(952)	(35)
Total, Fair Value	$ 65,456	$ 6,955

Note 5 - Loans (Details Textual

Note 5 - Loans (Details Textual) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2018USD ($)	Sep. 30, 2017USD ($)	Sep. 30, 2018USD ($)	Sep. 30, 2017USD ($)	Dec. 31, 2017USD ($)
Financing Receivable, Modifications, Recorded Investment	$ 16.6	$ 16.4	$ 16.6	$ 16.4	$ 20.6
Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down			$ 3.7	$ 4	$ 4.3
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0	0	1	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment			$ 0.3

Note 5 - Loans - Summary of Loa

Note 5 - Loans - Summary of Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Jun. 30, 2018	Dec. 31, 2017		Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016
Financing receivable, gross	$ 6,363,531		$ 5,851,261
Less allowance for loan losses	(66,879)	$ (64,239)	(59,406)	[1]	$ (58,459)	$ (55,059)	$ (51,893)
Net Loans	$ 6,296,652		$ 5,791,855	[1]
Financing receivable, gross, percentage	100.00%		100.00%
Commercial Real Estate Portfolio Segment [Member]
Financing receivable, gross	$ 2,478,788		$ 2,279,366
Less allowance for loan losses	$ (39,101)	(36,178)	$ (32,880)		(31,701)	(29,127)	(28,872)
Financing receivable, gross, percentage	38.95%		38.96%
Real Estate Portfolio Segment[Member]
Financing receivable, gross	$ 3,277,525		$ 2,928,808
Financing receivable, gross, percentage	51.51%		50.05%
Real Estate Portfolio Segment[Member] | Construction Loans [Member]
Financing receivable, gross	$ 543,611		$ 580,874
Less allowance for loan losses	$ (3,934)	(4,062)	$ (4,989)		(5,331)	(5,138)	(5,125)
Financing receivable, gross, percentage	8.54%		9.93%
Real Estate Portfolio Segment[Member] | Owner Occupied Commercial [Member]
Financing receivable, gross	$ 1,430,111		$ 1,328,666
Financing receivable, gross, percentage	22.47%		22.71%
Real Estate Portfolio Segment[Member] | One to Four Family [Member]
Financing receivable, gross	$ 610,460		$ 603,063
Financing receivable, gross, percentage	9.60%		10.30%
Real Estate Portfolio Segment[Member] | Other Mortgages [Member]
Financing receivable, gross	$ 1,236,954		$ 997,079
Financing receivable, gross, percentage	19.44%		17.04%
Consumer Portfolio Segment [Member]
Financing receivable, gross	$ 63,607		$ 62,213
Less allowance for loan losses	$ (515)	$ (561)	$ (515)		$ (461)	$ (402)	$ (392)
Financing receivable, gross, percentage	1.00%		1.06%
[1]	Derived from audited financial statements.

Note 5 - Loans - Loans by Credi

Note 5 - Loans - Loans by Credit Quality Indicator (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Financing receivable, gross	$ 6,363,531	$ 5,851,261
Pass [Member]
Financing receivable, gross	6,227,413	5,751,507
Special Mention [Member]
Financing receivable, gross	100,226	61,622
Substandard [Member]
Financing receivable, gross	35,892	38,132
Doubtful [Member]
Financing receivable, gross
Commercial Real Estate Portfolio Segment [Member]
Financing receivable, gross	2,478,788	2,279,366
Commercial Real Estate Portfolio Segment [Member] | Pass [Member]
Financing receivable, gross	2,413,994	2,225,084
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member]
Financing receivable, gross	41,656	27,835
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member]
Financing receivable, gross	23,138	26,447
Commercial Real Estate Portfolio Segment [Member] | Doubtful [Member]
Financing receivable, gross
Real Estate Portfolio Segment[Member]
Financing receivable, gross	3,277,525	2,928,808
Real Estate Portfolio Segment[Member] | Construction Loans [Member]
Financing receivable, gross	543,611	580,874
Real Estate Portfolio Segment[Member] | Owner Occupied Commercial [Member]
Financing receivable, gross	1,430,111	1,328,666
Real Estate Portfolio Segment[Member] | One to Four Family [Member]
Financing receivable, gross	610,460	603,063
Real Estate Portfolio Segment[Member] | Other Mortgages [Member]
Financing receivable, gross	1,236,954	997,079
Real Estate Portfolio Segment[Member] | Pass [Member]
Financing receivable, gross	3,213,075	2,891,683
Real Estate Portfolio Segment[Member] | Pass [Member] | Construction Loans [Member]
Financing receivable, gross	536,789	572,657
Real Estate Portfolio Segment[Member] | Pass [Member] | Owner Occupied Commercial [Member]
Financing receivable, gross	1,396,503	1,317,113
Real Estate Portfolio Segment[Member] | Pass [Member] | One to Four Family [Member]
Financing receivable, gross	606,509	598,222
Real Estate Portfolio Segment[Member] | Pass [Member] | Other Mortgages [Member]
Financing receivable, gross	1,210,063	976,348
Real Estate Portfolio Segment[Member] | Special Mention [Member]
Financing receivable, gross	53,167	27,054
Real Estate Portfolio Segment[Member] | Special Mention [Member] | Construction Loans [Member]
Financing receivable, gross	5,400	6,691
Real Estate Portfolio Segment[Member] | Special Mention [Member] | Owner Occupied Commercial [Member]
Financing receivable, gross	30,101	7,333
Real Estate Portfolio Segment[Member] | Special Mention [Member] | One to Four Family [Member]
Financing receivable, gross	2,600	1,599
Real Estate Portfolio Segment[Member] | Special Mention [Member] | Other Mortgages [Member]
Financing receivable, gross	20,466	18,122
Real Estate Portfolio Segment[Member] | Substandard [Member]
Financing receivable, gross	11,283	10,071
Real Estate Portfolio Segment[Member] | Substandard [Member] | Construction Loans [Member]
Financing receivable, gross	1,422	1,526
Real Estate Portfolio Segment[Member] | Substandard [Member] | Owner Occupied Commercial [Member]
Financing receivable, gross	3,507	4,220
Real Estate Portfolio Segment[Member] | Substandard [Member] | One to Four Family [Member]
Financing receivable, gross	1,351	3,242
Real Estate Portfolio Segment[Member] | Substandard [Member] | Other Mortgages [Member]
Financing receivable, gross	6,425	2,609
Real Estate Portfolio Segment[Member] | Doubtful [Member]
Financing receivable, gross
Real Estate Portfolio Segment[Member] | Doubtful [Member] | Construction Loans [Member]
Financing receivable, gross
Real Estate Portfolio Segment[Member] | Doubtful [Member] | Owner Occupied Commercial [Member]
Financing receivable, gross
Real Estate Portfolio Segment[Member] | Doubtful [Member] | One to Four Family [Member]
Financing receivable, gross
Real Estate Portfolio Segment[Member] | Doubtful [Member] | Other Mortgages [Member]
Financing receivable, gross
Consumer Portfolio Segment [Member]
Financing receivable, gross	63,607	62,213
Consumer Portfolio Segment [Member] | Pass [Member]
Financing receivable, gross	63,555	62,083
Consumer Portfolio Segment [Member] | Special Mention [Member]
Financing receivable, gross	3	42
Consumer Portfolio Segment [Member] | Substandard [Member]
Financing receivable, gross	49	88
Consumer Portfolio Segment [Member] | Doubtful [Member]
Financing receivable, gross

Note 5 - Loans - Loans by Perfo

Note 5 - Loans - Loans by Performance Status (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Financing receivable, gross	$ 6,363,531	$ 5,851,261
Performing Financial Instruments [Member]
Financing receivable, gross	6,348,664	5,840,436
Nonperforming Financial Instruments [Member]
Financing receivable, gross	14,867	10,825
Commercial Real Estate Portfolio Segment [Member]
Financing receivable, gross	2,478,788	2,279,366
Commercial Real Estate Portfolio Segment [Member] | Performing Financial Instruments [Member]
Financing receivable, gross	2,469,980	2,269,642
Commercial Real Estate Portfolio Segment [Member] | Nonperforming Financial Instruments [Member]
Financing receivable, gross	8,808	9,724
Real Estate Portfolio Segment[Member]
Financing receivable, gross	3,277,525	2,928,808
Real Estate Portfolio Segment[Member] | Construction Loans [Member]
Financing receivable, gross	543,611	580,874
Real Estate Portfolio Segment[Member] | Owner Occupied Commercial [Member]
Financing receivable, gross	1,430,111	1,328,666
Real Estate Portfolio Segment[Member] | One to Four Family [Member]
Financing receivable, gross	610,460	603,063
Real Estate Portfolio Segment[Member] | Other Mortgages [Member]
Financing receivable, gross	1,236,954	997,079
Real Estate Portfolio Segment[Member] | Performing Financial Instruments [Member]
Financing receivable, gross	3,271,531	2,927,793
Real Estate Portfolio Segment[Member] | Performing Financial Instruments [Member] | Construction Loans [Member]
Financing receivable, gross	543,611	580,874
Real Estate Portfolio Segment[Member] | Performing Financial Instruments [Member] | Owner Occupied Commercial [Member]
Financing receivable, gross	1,429,958	1,328,110
Real Estate Portfolio Segment[Member] | Performing Financial Instruments [Member] | One to Four Family [Member]
Financing receivable, gross	609,658	602,604
Real Estate Portfolio Segment[Member] | Performing Financial Instruments [Member] | Other Mortgages [Member]
Financing receivable, gross	1,231,915	997,079
Real Estate Portfolio Segment[Member] | Nonperforming Financial Instruments [Member]
Financing receivable, gross	5,994	1,015
Real Estate Portfolio Segment[Member] | Nonperforming Financial Instruments [Member] | Construction Loans [Member]
Financing receivable, gross
Real Estate Portfolio Segment[Member] | Nonperforming Financial Instruments [Member] | Owner Occupied Commercial [Member]
Financing receivable, gross	153	556
Real Estate Portfolio Segment[Member] | Nonperforming Financial Instruments [Member] | One to Four Family [Member]
Financing receivable, gross	802	459
Real Estate Portfolio Segment[Member] | Nonperforming Financial Instruments [Member] | Other Mortgages [Member]
Financing receivable, gross	5,039
Consumer Portfolio Segment [Member]
Financing receivable, gross	63,607	62,213
Consumer Portfolio Segment [Member] | Performing Financial Instruments [Member]
Financing receivable, gross	63,542	62,127
Consumer Portfolio Segment [Member] | Nonperforming Financial Instruments [Member]
Financing receivable, gross	$ 65	$ 86

Note 5 - Loans - Loans Categori

Note 5 - Loans - Loans Categorized by Past Due Status (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Accrual loans, past due	$ 22,605	$ 18,439
Non-accrual	9,153	10,765
Current	6,331,773	5,822,057
Loans	6,363,531	5,851,261	[1]
Financing Receivables, 30 to 59 Days Past Due [Member]
Accrual loans, past due	1,749	7,143
Financing Receivables, 60 to 89 Days Past Due [Member]
Accrual loans, past due	15,142	11,236
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Accrual loans, past due	5,714	60
Commercial Real Estate Portfolio Segment [Member]
Accrual loans, past due	9,969	7,124
Non-accrual	8,499	9,712
Current	2,460,320	2,262,530
Loans	2,478,788	2,279,366
Commercial Real Estate Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Accrual loans, past due	513	1,410
Commercial Real Estate Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Accrual loans, past due	9,147	5,702
Commercial Real Estate Portfolio Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Accrual loans, past due	309	12
Real Estate Portfolio Segment[Member]
Accrual loans, past due	10,839	10,060
Non-accrual	654	1,015
Current	3,266,032	2,917,733
Loans	3,277,525	2,928,808
Real Estate Portfolio Segment[Member] | Construction Loans [Member]
Accrual loans, past due	1,535	1,053
Non-accrual
Current	542,076	579,821
Loans	543,611	580,874
Real Estate Portfolio Segment[Member] | Owner Occupied Commercial [Member]
Accrual loans, past due	4,316	3,664
Non-accrual	153	556
Current	1,425,642	1,324,446
Loans	1,430,111	1,328,666
Real Estate Portfolio Segment[Member] | One to Four Family [Member]
Accrual loans, past due	1,421	1,280
Non-accrual	501	459
Current	608,538	601,324
Loans	610,460	603,063
Real Estate Portfolio Segment[Member] | Other Mortgages [Member]
Accrual loans, past due	5,102	5,116
Non-accrual
Current	1,231,852	991,963
Loans	1,236,954	997,079
Real Estate Portfolio Segment[Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Accrual loans, past due	525	5,546
Real Estate Portfolio Segment[Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Construction Loans [Member]
Accrual loans, past due	538	56
Real Estate Portfolio Segment[Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Owner Occupied Commercial [Member]
Accrual loans, past due	375
Real Estate Portfolio Segment[Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | One to Four Family [Member]
Accrual loans, past due	150	430
Real Estate Portfolio Segment[Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Other Mortgages [Member]
Accrual loans, past due		5,116
Real Estate Portfolio Segment[Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Accrual loans, past due	4,974	4,514
Real Estate Portfolio Segment[Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Construction Loans [Member]
Accrual loans, past due	997	997
Real Estate Portfolio Segment[Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Owner Occupied Commercial [Member]
Accrual loans, past due	3,941	3,664
Real Estate Portfolio Segment[Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | One to Four Family [Member]
Accrual loans, past due	970	850
Real Estate Portfolio Segment[Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Other Mortgages [Member]
Accrual loans, past due	63
Real Estate Portfolio Segment[Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Accrual loans, past due	5,340
Real Estate Portfolio Segment[Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Construction Loans [Member]
Accrual loans, past due
Real Estate Portfolio Segment[Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Owner Occupied Commercial [Member]
Accrual loans, past due
Real Estate Portfolio Segment[Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | One to Four Family [Member]
Accrual loans, past due	301
Real Estate Portfolio Segment[Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Other Mortgages [Member]
Accrual loans, past due	5,039
Consumer Portfolio Segment [Member]
Accrual loans, past due	262	202
Non-accrual		38
Current	63,345	61,973
Loans	63,607	62,213
Consumer Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Accrual loans, past due	173	131
Consumer Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Accrual loans, past due	24	23
Consumer Portfolio Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Accrual loans, past due	$ 65	$ 48
[1]	Derived from audited financial statements.

Note 5 - Loans - Analysis of Al

Note 5 - Loans - Analysis of Allowance for Loans Losses by Portfolio Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018		Sep. 30, 2017	Dec. 31, 2017
Balance, beginning of period	$ 64,239	$ 55,059	$ 59,406	[1]	$ 51,893
Charge-offs	(4,047)	(1,555)	(7,823)		(7,997)
Recoveries	63	152	412		393
Provision	6,624	4,803	14,884		14,170
Balance, end of period	66,879	58,459	66,879		58,459
Individually Evaluated for Impairment	6,801		6,801			$ 5,609
Collectively Evaluated for Impairment	60,078		60,078			53,797
Ending Balance	6,363,531		6,363,531			5,851,261	[1]
Individually Evaluated for Impairment	37,733		37,733			40,510
Collectively Evaluated for Impairment	6,325,798		6,325,798			5,810,751
Commercial Real Estate Portfolio Segment [Member]
Balance, beginning of period	36,178	29,127	32,880		28,872
Charge-offs	(3,923)	(924)	(6,743)		(6,846)
Recoveries	52	67	229		273
Provision	6,794	3,431	12,735		9,402
Balance, end of period	39,101	31,701	39,101		31,701
Individually Evaluated for Impairment	6,297		6,297			4,276
Collectively Evaluated for Impairment	32,804		32,804			28,604
Ending Balance	2,478,788		2,478,788			2,279,366
Individually Evaluated for Impairment	23,138		23,138			26,447
Collectively Evaluated for Impairment	2,455,650		2,455,650			2,252,919
Real Estate Portfolio Segment[Member]
Ending Balance	3,277,525		3,277,525			2,928,808
Real Estate Portfolio Segment[Member] | Construction Loans [Member]
Balance, beginning of period	4,062	5,138	4,989		5,125
Charge-offs		(16)			(56)
Recoveries	4	12	108		42
Provision	(132)	197	(1,163)		220
Balance, end of period	3,934	5,331	3,934		5,331
Individually Evaluated for Impairment	181		181			120
Collectively Evaluated for Impairment	3,753		3,753			4,869
Ending Balance	543,611		543,611			580,874
Individually Evaluated for Impairment	1,463		1,463			1,571
Collectively Evaluated for Impairment	542,148		542,148			579,303
Real Estate Portfolio Segment[Member] | Real Estate Loan [Member]
Balance, beginning of period	23,438	20,392	21,022		17,504
Charge-offs	(48)	(550)	(869)		(922)
Recoveries	1	59	44		62
Provision	(62)	1,065	3,132		4,322
Balance, end of period	23,329	20,966	23,329		20,966
Individually Evaluated for Impairment	274		274			1,163
Collectively Evaluated for Impairment	23,055		23,055			19,859
Ending Balance	3,277,525		3,277,525			2,928,808
Individually Evaluated for Impairment	13,083		13,083			12,404
Collectively Evaluated for Impairment	3,264,442		3,264,442			2,916,404
Consumer Portfolio Segment [Member]
Balance, beginning of period	561	402	515		392
Charge-offs	(76)	(65)	(211)		(173)
Recoveries	6	14	31		16
Provision	24	110	180		226
Balance, end of period	515	$ 461	515		$ 461
Individually Evaluated for Impairment	49		49			50
Collectively Evaluated for Impairment	466		466			465
Ending Balance	63,607		63,607			62,213
Individually Evaluated for Impairment	49		49			88
Collectively Evaluated for Impairment	$ 63,558		$ 63,558			$ 62,125
[1]	Derived from audited financial statements.

Note 5 - Loans - Summary of Imp

Note 5 - Loans - Summary of Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2018	Sep. 30, 2018	Dec. 31, 2017
Recorded investment, with no allowance	$ 12,417	$ 12,417	$ 16,296
Unpaid principal balance, with no allowance	13,493	13,493	23,069
Average recorded investment, with no allowance	12,736	13,697	23,013
Interest income recognized in period, with no allowance	131	462	901
Recorded investment, with an allowance	25,316	25,316	24,214
Unpaid principal balance, with an allowance	32,735	32,735	24,795
Related allowance	6,801	6,801	5,609
Average recorded investment, with an allowance	25,830	26,033	25,727
Interest income recognized in period, with an allowance	224	750	1,059
Recorded investment	37,733	37,733	40,510
Unpaid principal balance	46,228	46,228	47,864
Average recorded investment	38,566	39,730	48,740
Interest income recognized in period	355	1,212	1,960
Commercial Real Estate Portfolio Segment [Member]
Recorded investment, with no allowance	4,611	4,611	10,036
Unpaid principal balance, with no allowance	5,502	5,502	16,639
Average recorded investment, with no allowance	4,694	5,259	16,417
Interest income recognized in period, with no allowance	50	162	571
Recorded investment, with an allowance	18,527	18,527	16,411
Unpaid principal balance, with an allowance	25,946	25,946	16,992
Related allowance	6,297	6,297	4,276
Average recorded investment, with an allowance	19,041	19,035	17,912
Interest income recognized in period, with an allowance	136	478	651
Recorded investment	23,138	23,138	26,447
Unpaid principal balance	31,448	31,448	33,631
Average recorded investment	23,735	24,294	34,329
Interest income recognized in period	186	640	1,222
Real Estate Portfolio Segment[Member]
Recorded investment, with no allowance	7,340	7,340	5,648
Unpaid principal balance, with no allowance	7,522	7,522	5,814
Average recorded investment, with no allowance	7,561	7,895	5,891
Interest income recognized in period, with no allowance	74	279	296
Recorded investment, with an allowance	5,743	5,743	6,756
Unpaid principal balance, with an allowance	5,743	5,743	6,756
Related allowance	274	274	1,163
Average recorded investment, with an allowance	5,743	5,952	6,776
Interest income recognized in period, with an allowance	73	228	349
Recorded investment	13,083	13,083	12,404
Unpaid principal balance	13,265	13,265	12,570
Average recorded investment	13,304	13,847	12,667
Interest income recognized in period	147	507	645
Real Estate Portfolio Segment[Member] | Construction Loans [Member]
Recorded investment, with no allowance	466	466	574
Unpaid principal balance, with no allowance	469	469	577
Average recorded investment, with no allowance	481	543	663
Interest income recognized in period, with no allowance	7	21	31
Recorded investment, with an allowance	997	997	997
Unpaid principal balance, with an allowance	997	997	997
Related allowance	181	181	120
Average recorded investment, with an allowance	997	997	997
Interest income recognized in period, with an allowance	14	42	56
Recorded investment	1,463	1,463	1,571
Unpaid principal balance	1,466	1,466	1,574
Average recorded investment	1,478	1,540	1,660
Interest income recognized in period	21	63	87
Real Estate Portfolio Segment[Member] | Owner Occupied Commercial [Member]
Recorded investment, with no allowance	1,800	1,800	2,640
Unpaid principal balance, with no allowance	1,982	1,982	2,806
Average recorded investment, with no allowance	2,008	2,311	2,875
Interest income recognized in period, with no allowance	16	91	159
Recorded investment, with an allowance	3,507	3,507	3,914
Unpaid principal balance, with an allowance	3,507	3,507	3,914
Related allowance	34	34	601
Average recorded investment, with an allowance	3,507	3,507	3,801
Interest income recognized in period, with an allowance	46	142	215
Recorded investment	5,307	5,307	6,554
Unpaid principal balance	5,489	5,489	6,720
Average recorded investment	5,515	5,818	6,676
Interest income recognized in period	62	233	374
Real Estate Portfolio Segment[Member] | One to Four Family [Member]
Recorded investment, with no allowance	501	501	2,262
Unpaid principal balance, with no allowance	501	501	2,262
Average recorded investment, with no allowance	501	501	2,289
Interest income recognized in period, with no allowance		1	93
Interest income recognized in period, with no allowance	(4)
Recorded investment, with an allowance	850	850	980
Unpaid principal balance, with an allowance	850	850	980
Related allowance	160	160	281
Average recorded investment, with an allowance	850	850	1,113
Interest income recognized in period, with an allowance	12	35	54
Recorded investment	1,351	1,351	3,242
Unpaid principal balance	1,351	1,351	3,242
Average recorded investment	1,351	1,351	3,402
Interest income recognized in period	8	36	147
Real Estate Portfolio Segment[Member] | Other Mortgages [Member]
Recorded investment, with no allowance	5,039	5,039	746
Unpaid principal balance, with no allowance	5,039	5,039	746
Average recorded investment, with no allowance	5,052	5,083	727
Interest income recognized in period, with no allowance	62	187	44
Recorded investment, with an allowance	1,386	1,386	1,862
Unpaid principal balance, with an allowance	1,386	1,386	1,862
Related allowance	80	80	281
Average recorded investment, with an allowance	1,386	1,595	1,862
Interest income recognized in period, with an allowance	15	51	80
Recorded investment	6,425	6,425	2,608
Unpaid principal balance	6,425	6,425	2,608
Average recorded investment	6,438	6,678	2,589
Interest income recognized in period	77	238	124
Consumer Portfolio Segment [Member]
Recorded investment, with no allowance			38
Unpaid principal balance, with no allowance			39
Average recorded investment, with no allowance			42
Interest income recognized in period, with no allowance			3
Recorded investment, with an allowance	49	49	50
Unpaid principal balance, with an allowance	49	49	50
Related allowance	49	49	50
Average recorded investment, with an allowance	49	49	42
Interest income recognized in period, with an allowance	1	2	3
Recorded investment	49	49	88
Unpaid principal balance	49	49	89
Average recorded investment	49	49	84
Interest income recognized in period	$ 1	$ 2	$ 6

Note 5 - Loans - Trouble Debt R

Note 5 - Loans - Trouble Debt Restructurings (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018USD ($)	Sep. 30, 2017USD ($)	Sep. 30, 2018USD ($)	Sep. 30, 2017USD ($)
Number of Contracts	10		10	9
Pre- Modification Outstanding Recorded Investment	$ 12,753		$ 12,753	$ 12,716
Post- Modification Outstanding Recorded Investment	$ 12,753		$ 12,753	$ 12,716
Commercial Real Estate Portfolio Segment [Member]
Number of Contracts	6		6	5
Pre- Modification Outstanding Recorded Investment	$ 7,242		$ 7,242	$ 7,205
Post- Modification Outstanding Recorded Investment	$ 7,242		$ 7,242	$ 7,205
Real Estate Portfolio Segment[Member]
Number of Contracts	3		3	3
Pre- Modification Outstanding Recorded Investment	$ 4,514		$ 4,514	$ 4,514
Post- Modification Outstanding Recorded Investment	$ 4,514		$ 4,514	$ 4,514
Real Estate Portfolio Segment[Member] | Construction Loans [Member]
Number of Contracts	1		1	1
Pre- Modification Outstanding Recorded Investment	$ 997		$ 997	$ 997
Post- Modification Outstanding Recorded Investment	$ 997		$ 997	$ 997
Real Estate Portfolio Segment[Member] | Owner Occupied Commercial [Member]
Number of Contracts	2		2	2
Pre- Modification Outstanding Recorded Investment	$ 3,664		$ 3,664	$ 3,664
Post- Modification Outstanding Recorded Investment	$ 3,664		$ 3,664	$ 3,664
Real Estate Portfolio Segment[Member] | One to Four Family [Member]
Number of Contracts	1		1	1
Pre- Modification Outstanding Recorded Investment	$ 850		$ 850	$ 850
Post- Modification Outstanding Recorded Investment	$ 850		$ 850	$ 850
Real Estate Portfolio Segment[Member] | Other Mortgages [Member]
Number of Contracts
Pre- Modification Outstanding Recorded Investment
Post- Modification Outstanding Recorded Investment
Consumer Portfolio Segment [Member]
Number of Contracts
Pre- Modification Outstanding Recorded Investment
Post- Modification Outstanding Recorded Investment

Note 6 - Employee and Directo_3

Note 6 - Employee and Director Benefits (Details Textual) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2006
Share-based Compensation, Total	$ 202,000	$ 294,000	$ 684,000	$ 916,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value			$ 10.98	$ 11.83
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Total	1,514,000		$ 1,514,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition			2 years 73 days
Restricted Stock [Member]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Total	$ 752,000		$ 752,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition			1 year 328 days
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period			10 years
The 2005 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized					6,150,000
The 2009 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	5,550,000		5,550,000

Note 6 - Employee and Directo_4

Note 6 - Employee and Director Benefits - Assumption Used to Estimate Fair Value of Stock Option Awards (Details) - Employee Stock Option [Member]	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Expected volatility	24.72%	29.00%
Expected dividends	1.06%	0.44%
Expected term (in years) (Year)	6 years 91 days	6 years 91 days
Risk-free rate	2.67%	2.08%

Note 6 - Employee and Directo_5

Note 6 - Employee and Director Benefits - Summary of Stock Option Activity (Details) - Employee Stock Option [Member] - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017	Dec. 31, 2016
Outstanding, shares (in shares)	1,666,834	2,026,334	2,026,334
Outstanding, weighted average exercise price (in dollars per share)	$ 10.68	$ 9	$ 9
Outstanding, weighted average remaining contractual term (Year)	5 years 36 days	5 years 255 days	5 years 182 days	6 years 73 days
Outstanding, aggregate intrinsic value	$ 38,998	$ 45,136	$ 51,377	$ 57,636
Granted (in shares)	12,750	52,500
Granted, weighted average exercise price (in dollars per share)	$ 41.58	$ 37.93
Granted, weighted average remaining contractual term (Year)	9 years 182 days	9 years 146 days
Granted, aggregate intrinsic value	$ (31)	$ (35)
Exercised (in shares)	(231,336)	(359,000)
Exercised, weighted average exercise price (in dollars per share)	$ 4.94	$ 4.97
Exercised, weighted average remaining contractual term (Year)	3 years 36 days	4 years 73 days
Exercised, aggregate intrinsic value	$ 7,665	$ 11,590
Forfeited (in shares)	(33,000)	(32,000)
Forfeited, weighted average exercise price (in dollars per share)	$ 15	$ 21.96
Forfeited, weighted average remaining contractual term (Year)	6 years 146 days	8 years 146 days
Forfeited, aggregate intrinsic value	$ 758	$ 489
Outstanding, shares (in shares)	1,415,248	1,687,834	1,666,834	2,026,334
Outstanding, weighted average exercise price (in dollars per share)	$ 11.79	$ 10.51	$ 10.68	$ 9
Exercisable, shares (in shares)	693,100	810,736
Exercisable, weighted average exercise price (in dollars per share)	$ 6.78	$ 5.22
Exercisable, weighted average remaining contractual term (Year)	3 years 182 days	4 years 73 days
Exercisable, aggregate intrinsic value	$ 22,513	$ 25,971

Note 6 - Employee and Directo_6

Note 6 - Employee and Director Benefits - Restricted Stock Activity (Details) - Restricted Stock [Member] - $ / shares	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Non-vested (in shares)	120,676	118,676
Non-vested (in dollars per share)	$ 10.29	$ 8.88
Granted (in shares)	12,850	7,000
Granted (in dollars per share)	$ 41.48	$ 38.02
Vested (in shares)	(73,700)	(4,200)
Vested (in dollars per share)	$ 5.88	$ 15.74
Forfeited (in shares)	(750)	(800)
Forfeited (in dollars per share)	$ 41.21	$ 15.74
Non-vested (in shares)	59,076	120,676
Non-vested (in dollars per share)	$ 19.38	$ 10.29

Note 8 - Recently Adopted Acc_2

Note 8 - Recently Adopted Accounting Pronouncements (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss), Net of Tax, Total		$ (9,788,000)	$ (198,000)	[1]
Scenario, Forecast [Member]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%
Adjustments for New Accounting Principle, Early Adoption [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax, Total			$ (43,000)
[1]	Derived from audited financial statements.

Note 9 - Recent Accounting Pr_2

Note 9 - Recent Accounting Pronouncements (Details Textual) $ in Millions	Sep. 30, 2018USD ($)
Lessee, Operating Lease, Liability, Payments, Due, Total	$ 17.4

Note 10 - Fair Value Measurem_3

Note 10 - Fair Value Measurement (Details Textual) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Asset Impairment Charges, Total	$ 4,893,000	$ 2,660,000	$ 8,782,000	$ 7,967,000
Real Estate Owned, Amount of Loss at Acquisition	$ 228,000	$ 20,000	581,000	$ 56,000
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Foreclosure			$ 360,000		$ 0

Note 10 - Fair Value Measurem_4

Note 10 - Fair Value Measurement - Financial Assets and Financial Liabilities Carried at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Available for sale debt securities	$ 578,021	$ 538,080	[1]
Fair Value, Measurements, Recurring [Member]
Available for sale debt securities	578,021	538,080
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Available for sale debt securities
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Available for sale debt securities	571,496	531,580
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Available for sale debt securities	6,525	6,500
Fair Value, Measurements, Recurring [Member] | US Treasury and Government [Member]
Available for sale debt securities	74,278	55,356
Fair Value, Measurements, Recurring [Member] | US Treasury and Government [Member] | Fair Value, Inputs, Level 1 [Member]
Available for sale debt securities
Fair Value, Measurements, Recurring [Member] | US Treasury and Government [Member] | Fair Value, Inputs, Level 2 [Member]
Available for sale debt securities	74,278	55,356
Fair Value, Measurements, Recurring [Member] | US Treasury and Government [Member] | Fair Value, Inputs, Level 3 [Member]
Available for sale debt securities
Fair Value, Measurements, Recurring [Member] | Collateralized Mortgage Backed Securities [Member]
Available for sale debt securities	298,824	276,498
Fair Value, Measurements, Recurring [Member] | Collateralized Mortgage Backed Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Available for sale debt securities
Fair Value, Measurements, Recurring [Member] | Collateralized Mortgage Backed Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Available for sale debt securities	298,824	276,498
Fair Value, Measurements, Recurring [Member] | Collateralized Mortgage Backed Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Available for sale debt securities
Fair Value, Measurements, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member]
Available for sale debt securities	112,698	134,849
Fair Value, Measurements, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Available for sale debt securities
Fair Value, Measurements, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Available for sale debt securities	112,698	134,849
Fair Value, Measurements, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Available for sale debt securities
Fair Value, Measurements, Recurring [Member] | Corporate Debt Securities [Member]
Available for sale debt securities	92,221	71,377
Fair Value, Measurements, Recurring [Member] | Corporate Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Available for sale debt securities
Fair Value, Measurements, Recurring [Member] | Corporate Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Available for sale debt securities	85,696	64,877
Fair Value, Measurements, Recurring [Member] | Corporate Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Available for sale debt securities	$ 6,525	$ 6,500
[1]	Derived from audited financial statements.

Note 10 - Fair Value Measurem_5

Note 10 - Fair Value Measurement - Carrying Amount and Estimated Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Impaired loans	$ 30,932	$ 34,901
Other real estate owned and repossessed assets	5,714	6,701
Total assets at fair value	36,646	41,602
Fair Value, Inputs, Level 1 [Member]
Impaired loans
Other real estate owned and repossessed assets
Total assets at fair value
Fair Value, Inputs, Level 2 [Member]
Impaired loans
Other real estate owned and repossessed assets
Total assets at fair value
Fair Value, Inputs, Level 3 [Member]
Impaired loans	30,932	34,901
Other real estate owned and repossessed assets	5,714	6,701
Total assets at fair value	$ 36,646	$ 41,602

Note 10 - Fair Value Measurem_6

Note 10 - Fair Value Measurement - Financial Assets and Liabilities Carried at Fair Value on Recurring Basis or Nonrecurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Cash and due from banks	$ 77,692	$ 86,213	[1]
Available for sale debt securities	578,021	538,080	[1]
Equity securities	889	1,034	[1]
Federal funds sold	229,033	239,524	[1]
Mortgage loans held for sale	5,277	4,459	[1]
Bank-owned life insurance contracts	129,869	127,519	[1]
Held to maturity debt securities	250	250	[1]
Net Loans	6,296,652	5,791,855	[1]
Federal funds purchased	246,094	301,797	[1]
Reported Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member]
Cash and due from banks	136,788	238,062
Reported Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Available for sale debt securities	571,496	531,580
Equity securities	889	1,034
Federal funds sold	229,033	239,524
Mortgage loans held for sale	5,277	4,459
Bank-owned life insurance contracts	129,869	127,519
Deposits	6,505,351	6,091,674
Federal funds purchased	246,094	301,797
Other borrowings	64,657	64,832
Reported Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member]
Available for sale debt securities	6,525	6,500
Held to maturity debt securities	250	250
Net Loans	6,265,720	5,756,954
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member]
Cash and due from banks	136,788	238,062
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Available for sale debt securities	571,496	531,580
Equity securities	889	1,034
Federal funds sold	229,033	239,524
Mortgage loans held for sale	5,277	4,459
Bank-owned life insurance contracts	129,869	127,519
Deposits	6,497,244	6,086,085
Federal funds purchased	246,094	301,797
Other borrowings	64,601	65,921
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member]
Available for sale debt securities	6,525	6,500
Held to maturity debt securities	250	250
Net Loans	$ 6,174,697	$ 5,712,441
[1]	Derived from audited financial statements.