ServisFirst Bancshares (SFBS) 10-Q 30 Apr 20 2020 Q1 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	3 Months Ended
	Mar. 31, 2020	Apr. 27, 2020
Document Information [Line Items]
Entity Central Index Key	0001430723
Entity Registrant Name	ServisFirst Bancshares, Inc.
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	Q1
Document Fiscal Year Focus	2020
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2020
Document Transition Report	false
Entity File Number	001-36452
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	26-0734029
Entity Address, Address Line One	2500 Woodcrest Place
Entity Address, City or Town	Birmingham
Entity Address, State or Province	AL
Entity Address, Postal Zip Code	35209
City Area Code	205
Local Phone Number	949-0302
Title of 12(b) Security	Common stock, par value $.001 per share
Trading Symbol	SFBS
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		53,844,009

Consolidated Balance Sheets (Cu

Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	[1]
ASSETS
Cash and due from banks	$ 80,461	$ 78,618
Interest-bearing balances due from depository institutions	297,943	451,509
Federal funds sold	306,127	100,473
Cash and cash equivalents	684,531	630,600
Available for sale debt securities, at fair value	826,782	759,399
Held to maturity debt securities (fair value of $250 at March 31, 2020 and December 31, 2019)	250	250
Mortgage loans held for sale	6,747	6,312
Loans	7,568,836	7,261,451
Less allowance for loan losses	(85,414)	(76,584)
Loans, net	7,483,422	7,184,867
Premises and equipment, net	55,992	56,496
Accrued interest and dividends receivable	25,314	26,262
Deferred tax assets, net	23,723	25,566
Other real estate owned and repossessed assets	7,448	8,178
Bank owned life insurance contracts	210,847	209,395
Goodwill and other identifiable intangible assets	14,111	14,179
Other assets	25,715	26,149
Total assets	9,364,882	8,947,653
Liabilities:
Noninterest-bearing	1,925,626	1,749,879
Interest-bearing	5,907,029	5,780,554
Total deposits	7,832,655	7,530,433
Federal funds purchased	543,623	470,749
Other borrowings	64,707	64,703
Accrued interest payable	12,399	11,934
Other liabilities	29,613	27,152
Total liabilities	8,482,997	8,104,971
Stockholders' equity:
Preferred stock, par value $0.001 per share; 1,000,000 authorized and undesignated at March 31, 2020 and December 31, 2019	0	0
Common stock, par value $0.001 per share; 100,000,000 shares authorized; 53,844,009 shares issued and outstanding at March 31, 2020, and 53,623,740 shares issued and outstanding at December 31, 2019	54	54
Additional paid-in capital	221,901	219,766
Retained earnings	641,980	616,611
Accumulated other comprehensive income	17,448	5,749
Total stockholders' equity attributable to ServisFirst Bancshares, Inc.	881,383	842,180
Noncontrolling interest	502	502
Total stockholders' equity	881,885	842,682
Total liabilities and stockholders' equity	$ 9,364,882	$ 8,947,653
[1]	derived from audited financial statements.

Consolidated Balance Sheets (_2

Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Held to maturity debt securities, fair value	$ 250	$ 250
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
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)	53,844,009	53,623,740
Common stock, outstanding (in shares)	53,844,009	53,623,740

Consolidated Statements of Inco

Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Interest and fees on loans	$ 89,385	$ 85,524
Taxable securities	5,154	3,746
Nontaxable securities	233	446
Federal funds sold	277	1,219
Other interest and dividends	1,718	2,764
Total interest income	96,767	93,699
Deposits	16,745	22,145
Borrowed funds	2,382	2,776
Total interest expense	19,127	24,921
Net interest income	77,640	68,778
Provision for loan losses	13,584	4,885
Net interest income after provision for loan losses	64,056	63,893
Increase in cash surrender value life insurance	1,453	762
Other operating income	469	329
Total noninterest income	6,674	4,944
Salaries and employee benefits	15,658	14,265
Equipment and occupancy	2,400	2,259
Third party processing and other services	3,345	2,411
Professional services	948	994
FDIC and other regulatory assessments	1,332	1,019
Other real estate owned	601	22
Other operating expense	3,636	4,358
Total noninterest expense	27,920	25,328
Income before income taxes	42,810	43,509
Provision for income taxes	8,032	8,499
Net income	34,778	35,010
Dividends on preferred stock	0	0
Net income available to common stockholders	$ 34,778	$ 35,010
Basic earnings per common share (in dollars per share)	$ 0.65	$ 0.65
Diluted earnings per common share (in dollars per share)	$ 0.64	$ 0.65
Deposit Account [Member]
Noninterest income	$ 1,916	$ 1,702
Mortgage Banking [Member]
Noninterest income	1,071	575
Credit Card [Member]
Noninterest income	$ 1,765	$ 1,576

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Net income	$ 34,778	$ 35,010
Other comprehensive income, net of tax:
Unrealized net holding gains arising during period from securities available for sale, net of tax of $3,110 and $1,002 for 2020 and 2019, respectively	11,699	3,772
Comprehensive income	$ 46,477	$ 38,782

Consolidated Statements of Co_2

Consolidated Statements of Comprehensive Income (Unaudited) (Parentheticals) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Unrealized holding gain (loss) from available for sale securities, tax	$ 3,110	$ 1,002

Consolidated Statement of Stock

Consolidated Statement of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Common Stock [Member]	Preferred Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Noncontrolling Interest [Member]	Total
Balance (in shares) at Dec. 31, 2018	53,375,195
Balance at Dec. 31, 2018	$ 53	$ 0	$ 218,521	$ 500,868	$ (4,741)	$ 502	$ 715,203
Common dividends declared	$ 0	0	0	(8,025)	0	0	(8,025)
Issue restricted shares pursuant to stock incentives (in shares)	2,700
Issue shares of common stock upon exercise of stock options (in shares)	117,313
Issue shares of common stock upon exercise of stock options	$ 0	0	797	0	0	0	797
Shares of common stock withheld in net settlement upon exercise of stock options	0	0	(1,453)	0	0	0	(1,453)
Stock-based compensation expense	0	0	282	0	0	0	282
Other comprehensive income, net of tax	0	0	0	0	3,772	0	3,772
Net income	$ 0	0	0	35,010	0	0	35,010
Balance (in shares) at Mar. 31, 2019	53,495,208
Balance at Mar. 31, 2019	$ 53	0	218,147	527,853	(969)	502	745,586
Balance (in shares) at Dec. 31, 2018	53,375,195
Balance at Dec. 31, 2018	$ 53	0	218,521	500,868	(4,741)	502	715,203
Net income							35,010
Balance (in shares) at Dec. 31, 2019	53,623,740
Balance at Dec. 31, 2019	$ 54	0	219,766	616,611	5,749	502	842,682	[1]
Common dividends declared	$ 0	0	0	(9,409)	0	0	(9,409)
Issue restricted shares pursuant to stock incentives (in shares)	15,300
Issue shares of common stock upon exercise of stock options (in shares)	204,969
Issue shares of common stock upon exercise of stock options	$ 0	0	2,261	0	0	0	2,261
Shares of common stock withheld in net settlement upon exercise of stock options	0	0	(403)	0	0	0	(403)
Stock-based compensation expense	0	0	277	0	0	0	277
Other comprehensive income, net of tax	0	0	0	0	11,699	0	11,699
Net income	$ 0	0	0	34,778	0	0	34,778
Balance (in shares) at Mar. 31, 2020	53,844,009
Balance at Mar. 31, 2020	$ 54	$ 0	$ 221,901	$ 641,980	$ 17,448	$ 502	$ 881,885
[1]	derived from audited financial statements.

Consolidated Statement of Sto_2

Consolidated Statement of Stockholders' Equity (Unaudited) (Parentheticals) - $ / shares	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Common dividends, per share declared (in dollars per share)	$ 0.175	$ 0.15
Shares withheld in net settlement upon exercise of stock options (in shares)	11,031	45,187

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
OPERATING ACTIVITIES
Net income	$ 34,778	$ 35,010	$ 35,010
Adjustments to reconcile net income to net cash provided by
Deferred tax (benefit) expense	(1,267)	1,068
Provision for loan losses	13,584	4,885
Depreciation	921	917
Accretion on acquired loans	0	(91)
Amortization of core deposit intangible	68	68
Net amortization of debt securities available for sale	966	626
Decrease (increase) in accrued interest and dividends receivable	948	(2,928)
Stock-based compensation expense	277	282
Increase in accrued interest payable	465	1,095
Proceeds from sale of mortgage loans held for sale	36,308	15,581
Originations of mortgage loans held for sale	(35,672)	(16,109)
Gain on sale of mortgage loans held for sale	(1,071)	(575)
Net (gain) loss on sale of other real estate owned and repossessed assets	(24)	2
Write down of other real estate owned and repossessed assets	587	20
Operating losses of tax credit partnerships	3	35
Increase in cash surrender value of life insurance contracts	(1,453)	(762)
Net change in other assets, liabilities, and other operating activities	2,814	2,550
Net cash provided by operating activities	52,232	41,674
INVESTMENT ACTIVITIES
Purchase of debt securities available for sale	(80,149)	(65,507)
Proceeds from maturities, calls and paydowns of debt securities available for sale	26,778	28,469
Purchase of debt securities held to maturity	0	(250)
Investment in tax credit partnership and SBIC	(111)	0
Increase in loans	(312,426)	(129,977)
Purchase of premises and equipment	(417)	(759)
Proceeds from sale of other real estate owned and repossessed assets	454	48
Net cash used in investing activities	(365,871)	(167,976)
FINANCING ACTIVITIES
Net increase in non-interest-bearing deposits	175,747	15,362
Net increase in interest-bearing deposits	126,475	152,596
Net increase in federal funds purchased	72,874	84,653
Proceeds from exercise of stock options	2,261	797
Taxes paid in net settlement of tax obligation upon exercise of stock options	(403)	(1,453)
Dividends paid on common stock	(9,384)	(8,019)
Net cash provided by financing activities	367,570	243,936
Net increase in cash and cash equivalents	53,931	117,634
Cash and cash equivalents at beginning of period	630,600	681,895	681,895
Cash and cash equivalents at end of period	684,531	799,529	$ 630,600
Cash paid for:
Interest	18,662	23,826
Income taxes	400	1,533
Income tax refund	0	(2)
NONCASH TRANSACTIONS
Other real estate acquired in settlement of loans	287	381
Dividends declared	$ 9,409	$ 8,025

Note 1 - General

Note 1 - General	3 Months Ended
	Mar. 31, 2020
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, 2019. All reported amounts are in thousands except share and per share data. Allowance for Loan Losses The Company was prepared to fully adopt Accounting Standards Update (“ASU”) 2016 13, 326 January 1, 2020 19 March 27, 2020, 2016 13. 19 December 31, 2020, January 1, 2020. The allowance for loan losses as of March 31, 2020 19 5

Note 2 - Cash and Cash Equivale

Note 2 - Cash and Cash Equivalents	3 Months Ended
	Mar. 31, 2020
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	3 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Earnings Per Share [Text Block]	NOTE 3 Basic earnings per common share are computed by dividing net income 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 March 31, 2020 2019 (In Thousands, Except Shares and Per Share Data) Earnings per common share Weighted average common shares outstanding 53,704,224 53,465,091 Net income available to common stockholders $ 34,778 $ 35,010 Basic earnings per common share $ 0.65 $ 0.65 Weighted average common shares outstanding 53,704,224 53,465,091 Dilutive effects of assumed conversions and exercise of stock options and warrants 463,190 611,447 Weighted average common and dilutive potential common shares outstanding 54,167,414 54,076,538 Net income available to common stockholders $ 34,778 $ 35,010 Diluted earnings per common share $ 0.64 $ 0.65

Note 4 - Securities

Note 4 - Securities	3 Months Ended
	Mar. 31, 2020
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 March 31, 2020 December 31, 2019 Amortized Cost Gross Unrealized Gain Gross Unrealized Loss Fair Value March 31, 2020 (In Thousands) Available for sale debt securities U.S. Treasury Securities $ 48,956 $ 826 $ - $ 49,782 Government Agency Securities 18,188 405 - 18,593 Mortgage-backed securities 529,126 17,305 - 546,431 State and municipal securities 50,989 353 (14 ) 51,328 Corporate debt 157,496 3,652 (500 ) 160,648 Total $ 804,755 $ 22,541 $ (514 ) $ 826,782 Held to maturity debt securities State and municipal securities $ 250 $ - $ - $ 250 Total $ 250 $ - $ - $ 250 December 31, 2019 Available for sale debt securities U.S. Treasury Securities $ 48,923 $ 291 $ (4 ) $ 49,210 Government Agency Securities 18,245 143 (2 ) 18,386 Mortgage-backed securities 470,513 4,859 (1,318 ) 474,054 State and municipal securities 56,951 335 (14 ) 57,272 Corporate debt 157,549 3,098 (170 ) 160,477 Total $ 752,181 $ 8,726 $ (1,508 ) $ 759,399 Held to maturity debt securities State and municipal securities $ 250 $ - $ - $ 250 Total $ 250 $ - $ - $ 250 The amortized cost and fair value of debt securities as of March 31, 2020 December 31, 2019 may may not March 31, 2020 December 31, 2019 Amortized Cost Fair Value Amortized Cost Fair Value (In thousands) Available for sale debt securities Due within one year $ 59,924 $ 60,306 $ 58,722 $ 58,975 Due from one to five years 83,414 84,963 90,034 91,005 Due from five to ten years 130,876 133,641 129,501 131,914 Due after ten years 1,415 1,441 3,411 3,451 Mortgage-backed securities 529,126 546,431 470,513 474,054 $ 804,755 $ 826,782 $ 752,181 $ 759,399 Held to maturity debt securities 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 March 31, 2020 December 31, 2019, 12 12 March 31, 2020, 12 not not not may not March 31, 2020. 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) March 31, 2020 State and municipal securities $ (10 ) $ 3,582 $ (4 ) $ 721 $ (14 ) $ 4,303 Corporate debt (500 ) 15,478 - - (500 ) 15,478 Total $ (510 ) $ 19,060 $ (4 ) $ 721 $ (514 ) $ 19,781 December 31, 2019 U.S. Treasury Securities $ (4 ) $ 3,012 $ - $ - $ (4 ) $ 3,012 Government Agency Securities (2 ) 266 - - (2 ) 266 Mortgage-backed securities (1,206 ) 153,330 (112 ) 24,911 (1,318 ) 178,241 State and municipal securities (4 ) 1,900 (10 ) 2,647 (14 ) 4,547 Corporate debt (170 ) 19,981 - - (170 ) 19,981 Total $ (1,386 ) $ 178,489 $ (122 ) $ 27,558 $ (1,508 ) $ 206,047 The carrying value of investment securities pledged to secure public funds on deposit and for other purposes as required by law was $437.6 million and $389.9 million as of March 31, 2020 December 31, 2019,

Note 5 - Loans

Note 5 - Loans	3 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]	NOTE 5 The following table details the Company’s loans at March 31, 2020 December 31, 2019: March 31, December 31, 2020 2019 (Dollars In Thousands) Commercial, financial and agricultural $ 2,771,307 $ 2,696,210 Real estate - construction 548,578 521,392 Real estate - mortgage: Owner-occupied commercial 1,678,532 1,587,478 1-4 family mortgage 675,870 644,188 Other mortgage 1,834,137 1,747,394 Subtotal: Real estate - mortgage 4,188,539 3,979,060 Consumer 60,412 64,789 Total Loans 7,568,836 7,261,451 Less: Allowance for loan losses (85,414 ) (76,584 ) Net Loans $ 7,483,422 $ 7,184,867 Commercial, financial and agricultural 36.61 % 37.13 % Real estate - construction 7.25 % 7.18 % Real estate - mortgage: Owner-occupied commercial 22.18 % 21.86 % 1-4 family mortgage 8.93 % 8.87 % Other mortgage 24.23 % 24.07 % Subtotal: Real estate - mortgage 55.34 % 54.80 % Consumer 0.80 % 0.89 % 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(s) 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 presently jeopardize debt repayment. These loans are characterized by the distinct possibility that the institution will sustain some loss if the deficiencies 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 March 31, 2020 December 31, 2019 Special March 31, 2020 Pass Mention Substandard Doubtful Total (In Thousands) Commercial, financial and agricultural $ 2,708,845 $ 17,902 $ 44,560 $ - $ 2,771,307 Real estate - construction 542,659 4,136 1,783 - 548,578 Real estate - mortgage: Owner-occupied commercial 1,658,909 11,014 8,609 - 1,678,532 1-4 family mortgage 671,407 2,080 2,383 - 675,870 Other mortgage 1,824,825 7,557 1,755 - 1,834,137 Total real estate - mortgage 4,155,141 20,651 12,747 - 4,188,539 Consumer 60,403 - 9 - 60,412 Total $ 7,467,048 $ 42,689 $ 59,099 $ - $ 7,568,836 Special December 31, 2019 Pass Mention Substandard Doubtful Total (In Thousands) Commercial, financial and agricultural $ 2,629,487 $ 46,176 $ 20,547 $ - $ 2,696,210 Real estate - construction 512,373 4,731 4,288 - 521,392 Real estate - mortgage: Owner-occupied commercial 1,555,283 18,240 13,955 - 1,587,478 1-4 family mortgage 639,959 2,787 1,442 - 644,188 Other mortgage 1,735,869 10,018 1,507 - 1,747,394 Total real estate - mortgage 3,931,111 31,045 16,904 - 3,979,060 Consumer 64,789 - - - 64,789 Total $ 7,137,760 $ 81,952 $ 41,739 $ - $ 7,261,451 Loans by performance status as of March 31, 2020 December 31, 2019 March 31, 2020 Performing Nonperforming Total (In Thousands) Commercial, financial and agricultural $ 2,756,132 $ 15,175 $ 2,771,307 Real estate - construction 546,774 1,804 548,578 Real estate - mortgage: Owner-occupied commercial 1,668,297 10,235 1,678,532 1-4 family mortgage 674,134 1,736 675,870 Other mortgage 1,829,244 4,893 1,834,137 Total real estate - mortgage 4,171,675 16,864 4,188,539 Consumer 60,387 25 60,412 Total $ 7,534,968 $ 33,868 $ 7,568,836 December 31, 2019 Performing Nonperforming Total (In Thousands) Commercial, financial and agricultural $ 2,681,280 $ 14,930 $ 2,696,210 Real estate - construction 519,803 1,589 521,392 Real estate - mortgage: Owner-occupied commercial 1,576,652 10,826 1,587,478 1-4 family mortgage 641,875 2,313 644,188 Other mortgage 1,740,963 6,431 1,747,394 Total real estate - mortgage 3,959,490 19,570 3,979,060 Consumer 64,766 23 64,789 Total $ 7,225,339 $ 36,112 $ 7,261,451 Loans by past due status as of March 31, 2020 December 31, 2019 March 31, 2020 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 $ 1,859 $ 211 $ 45 $ 2,115 $ 15,130 $ 2,754,062 $ 2,771,307 Real estate - construction - - - - 1,804 546,774 548,578 Real estate - mortgage: Owner-occupied commercial 2,389 1,778 - 4,167 10,235 1,664,130 1,678,532 1-4 family mortgage 2,191 - - 2,191 1,736 671,943 675,870 Other mortgage - - 4,893 4,893 - 1,829,244 1,834,137 Total real estate - mortgage 4,580 1,778 4,893 11,251 11,971 4,165,317 4,188,539 Consumer 83 31 16 130 9 60,273 60,412 Total $ 6,522 $ 2,020 $ 4,954 $ 13,496 $ 28,914 $ 7,526,426 $ 7,568,836 December 31, 2019 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 $ 3,135 $ 344 $ 201 $ 3,680 $ 14,729 $ 2,677,801 $ 2,696,210 Real estate - construction 830 - - 830 1,589 518,973 521,392 Real estate - mortgage: Owner-occupied commercial 917 7,242 - 8,159 10,826 1,568,493 1,587,478 1-4 family mortgage 1,638 567 873 3,078 1,440 639,670 644,188 Other mortgage - - 4,924 4,924 1,507 1,740,963 1,747,394 Total real estate - mortgage 2,555 7,809 5,797 16,161 13,773 3,949,126 3,979,060 Consumer 35 25 23 83 - 64,706 64,789 Total $ 6,555 $ 8,178 $ 6,021 $ 20,754 $ 30,091 $ 7,210,606 $ 7,261,451 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 five Impaired Loans. may may External Qualitative Factors three 19 March 31, 2020. 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 March 31, 2020 March 31, 2019. Commercial, financial and Real estate - Real estate - agricultural construction mortgage Consumer Total (In Thousands) Three Months Ended March 31, 2020 Allowance for loan losses: Balance at December 31, 2019 $ 43,666 $ 2,768 $ 29,653 $ 497 $ 76,584 Charge-offs (2,640 ) (454 ) (1,678 ) (58 ) (4,830 ) Recoveries 62 1 1 12 76 Provision 7,692 1,442 4,384 66 13,584 Balance at March 31, 2020 $ 48,780 $ 3,757 $ 32,360 $ 517 $ 85,414 Three Months Ended March 31, 2019 Allowance for loan losses: Balance at December 31, 2018 $ 39,016 $ 3,522 $ 25,508 $ 554 $ 68,600 Charge-offs (3,037 ) - (50 ) (218 ) (3,305 ) Recoveries 12 1 7 7 27 Provision 3,468 72 1,246 99 4,885 Balance at March 31, 2019 $ 39,459 $ 3,595 $ 26,711 $ 442 $ 70,207 As of March 31, 2020 Allowance for loan losses: Individually Evaluated for Impairment $ 8,840 $ 351 $ 931 $ - $ 10,122 Collectively Evaluated for Impairment 39,940 3,406 31,429 517 75,292 Loans: Ending Balance $ 2,771,307 $ 548,578 $ 4,188,539 $ 60,412 $ 7,568,836 Individually Evaluated for Impairment 44,868 1,834 13,815 9 60,526 Collectively Evaluated for Impairment 2,726,439 546,744 4,174,724 60,403 7,508,310 As of December 31, 2019 Allowance for loan losses: Individually Evaluated for Impairment $ 6,085 $ 86 $ 3,633 $ - $ 9,804 Collectively Evaluated for Impairment 37,581 2,682 26,020 497 66,780 Loans: Ending Balance $ 2,696,210 $ 521,392 $ 3,979,060 $ 64,789 $ 7,261,451 Individually Evaluated for Impairment 20,843 4,320 17,985 - 43,148 Collectively Evaluated for Impairment 2,675,367 517,072 3,961,075 64,789 7,218,303 The following table presents details of the Company’s impaired loans as of March 31, 2020 December 31, 2019, not March 31, 2020 For the three months ended March 31, 2020 Interest Unpaid Average Income Recorded Principal Related Recorded Recognized Investment Balance Allowance Investment in Period (In Thousands) With no allowance recorded: Commercial, financial and agricultural $ 12,360 $ 12,360 $ - $ 12,352 $ 176 Real estate - construction 30 34 - 35 - Real estate - mortgage: Owner-occupied commercial 2,195 2,291 - 2,299 33 1-4 family mortgage 717 717 - 735 1 Other mortgage 1,701 1,701 - 1,731 18 Total real estate - mortgage 4,613 4,709 - 4,765 52 Consumer 9 9 - 9 - Total with no allowance recorded 17,012 17,112 - 17,161 228 With an allowance recorded: Commercial, financial and agricultural 32,508 32,775 8,840 33,186 239 Real estate - construction 1,804 1,882 351 2,749 - Real estate - mortgage: Owner-occupied commercial 7,487 12,127 827 12,159 5 1-4 family mortgage 1,662 1,822 104 1,526 4 Other mortgage 53 53 - 156 2 Total real estate - mortgage 9,202 14,002 931 13,841 11 Consumer - - - - - Total with allowance recorded 43,514 48,659 10,122 49,776 250 Total Impaired Loans: Commercial, financial and agricultural 44,868 45,135 8,840 45,538 415 Real estate - construction 1,834 1,916 351 2,784 - Real estate - mortgage: Owner-occupied commercial 9,682 14,418 827 14,458 38 1-4 family mortgage 2,379 2,539 104 2,261 5 Other mortgage 1,754 1,754 - 1,887 20 Total real estate - mortgage 13,815 18,711 931 18,606 63 Consumer 9 9 - 9 - Total impaired loans $ 60,526 $ 65,771 $ 10,122 $ 66,937 $ 478 December 31, 2019 For the twelve months ended December 31, 2019 Interest Unpaid Average Income Recorded Principal Related Recorded Recognized Investment Balance Allowance Investment In Period (In Thousands) With no allowance recorded: Commercial, financial and agricultural $ 9,015 $ 10,563 $ - $ 11,284 $ 562 Real estate - construction 2,731 2,735 - 2,063 126 Real estate - mortgage: Owner-occupied commercial 7,150 7,246 - 7,548 618 1-4 family mortgage 287 287 - 289 2 Total real estate - mortgage 7,437 7,533 - 7,837 620 Consumer - - - - - Total with no allowance recorded 19,183 20,831 - 21,184 1,308 With an allowance recorded: Commercial, financial and agricultural 11,828 19,307 6,085 19,714 395 Real estate - construction 1,589 1,589 86 1,614 27 Real estate - mortgage: Owner-occupied commercial 7,888 11,028 2,456 13,627 301 1-4 family mortgage 1,153 1,153 176 1,157 1 Other mortgage 1,507 1,507 1,001 1,468 21 Total real estate - mortgage 10,548 13,688 3,633 16,252 323 Consumer - - - - - Total with allowance recorded 23,965 34,584 9,804 37,580 745 Total Impaired Loans: Commercial, financial and agricultural 20,843 29,870 6,085 30,998 957 Real estate - construction 4,320 4,324 86 3,677 153 Real estate - mortgage: Owner-occupied commercial 15,038 18,274 2,456 21,175 919 1-4 family mortgage 1,440 1,440 176 1,446 3 Other mortgage 1,507 1,507 1,001 1,468 21 Total real estate - mortgage 17,985 21,221 3,633 24,089 943 Total impaired loans $ 43,148 $ 55,415 $ 9,804 $ 58,764 $ 2,053 As of March 31, 2020, 19 730 five five no three not March 2020. Troubled Debt Restructurings (“TDR”) at March 31, 2020, December 31, 2019 March 31, 2019 March 31, 2020, December 31, 2019 March 31, 2019 March 31, 2020, December 31, 2019 March 31, 2019. One no three March 31, 2020. no three March 31, 2019. 2020 Pre- Post- Modification Modification Outstanding Outstanding Number of Recorded Recorded Contracts Investment Investment (In Thousands) Troubled Debt Restructurings Commercial, financial and agricultural 1 $ 350 $ 350 Real estate - construction - - - Real estate - mortgage: Owner-occupied commercial - - - 1-4 family mortgage - - - Other mortgage - - - Total real estate mortgage - - - Consumer - - - 1 $ 350 $ 350 There were no twelve twelve three March 31, 2020. two twelve three March 31, 2019. 90

Note 6 - Leases

Note 6 - Leases	3 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Lessee, Operating Leases [Text Block]	NOTE 6 The Company leases space under non-cancelable operating leases for several of its banking offices and certain office equipment. The leases have remaining terms up to 9 years. At March 31, 2020, December 31, 2019 Maturities of operating lease liabilities as of March 31, 2020 March 31, 2020 (In Thousands) 2020 (remaining) $ 2,544 2021 2,688 2022 2,655 2023 2,181 2024 1,180 thereafter 2,570 Total lease payments 13,818 Less: imputed interest (1,224 ) Present value of operating lease liabilities $ 12,594 As of March 31, 2020, Operating cash flows related to leases were $852,000 and $781,000 for the three March 31, 2020 2019, Lease costs during the three March 31, 2020 2019 Three Months Ended March 31, 2020 2019 Operating lease cost $ 873 $ 840 Short-term lease cost 16 9 Variable lease cost 44 38 Sublease income (16 ) (6 ) Net lease cost $ 917 $ 881

Note 7 - Employee and Director

Note 7 - Employee and Director Benefits	3 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Share-based Payment Arrangement [Text Block]	NOTE 7 Stock Options At March 31, 2020, three March 31, 2020 2019, The Company’s 2009 ten The Company estimates the fair value of each stock option award using a Black-Scholes-Merton valuation model which incorporates the assumptions noted in the following table. Expected volatilities are based on an index of southeastern United States publicly traded banks. 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. 2019 Expected volatility 40.00 % Expected dividends 1.76 % Expected term (in years) 6.3 Risk-free rate 2.61 % There were no three March 31, 2020. three March 31, 2019 The following table summarizes stock option activity during the three March 31, 2020 2019: Weighted Weighted Average Average Remaining Exercise Contractual Aggregate Shares Price Term (years) Intrinsic Value (In Thousands) Three Months Ended March 31, 2020: Outstanding January 1, 2020 965,248 $ 15.19 4.9 $ 21,911 Granted - - - - Exercised (216,000 ) 10.47 3.3 4,072 Forfeited (18,000 ) 30.79 6.9 26 Outstanding March 31, 2020 731,248 17.68 5.4 $ 12,969 Exercisable March 31, 2020 210,500 $ 16.54 5.0 $ 7,146 Three Months Ended March 31, 2019: Outstanding January 1, 2019 1,238,748 $ 13.02 5.2 $ 23,355 Granted 6,000 34.09 9.8 (2 ) Exercised (162,500 ) 4.59 1.7 4,384 Forfeited - - - - Outstanding March 31, 2019 1,082,248 14.41 6.3 $ 21,318 Exercisable March 31, 2019 354,800 $ 8.40 4.0 $ 9,356 As of March 31, 2020, 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 March 31, 2020, Shares Weighted Average Grant Date Fair Value Three Months Ended March 31, 2020: Non-vested at January 1, 2020 71,290 $ 31.53 Granted 15,300 39.45 Vested (8,376 ) 18.64 Forfeited - - Non-vested at March 31, 2020 78,214 34.46 Three Months Ended March 31, 2019: Non-vested at January 1, 2019 44,076 $ 28.94 Granted 2,700 34.09 Vested (5,200 ) 20.31 Forfeited - - Non-vested at March 31, 2019 41,576 30.35

Note 8 - Derivatives

Note 8 - Derivatives	3 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Derivative Instruments and Hedging Activities Disclosure [Text Block]	NOTE 8 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 March 31, 2020 December 31, 2019 not

Note 9 - Recently Adopted Accou

Note 9 - Recently Adopted Accounting Pronouncements	3 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Accounting Standards Update and Change in Accounting Principle [Text Block]	NOTE 9 In July 2018, 2018 13, Fair Value Measurement (Topic 820 no 1 2 3 No. 2018 13 January 1, 2020. 2018 13 no

Note 10 - Recent Accounting Pro

Note 10 - Recent Accounting Pronouncements	3 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Accounting Changes and Error Corrections [Text Block]	NOTE 10 In June 2016, 2016 13, Financial Instruments-Credit Losses (Topic 326 ): Measurement of Credit Losses on Financial Instruments The Coronavirus Aid, Relief, and Economic Security Act (“CARES Act”), passed by Congress and signed into law by the President on March 27, 2020, 2016 13. 19 December 31, 2020, January 1, 2020. The Company’s CECL implementation team includes leadership from Accounting, Credit Administration and Risk Management. This group works closely with a third CECL parallel comparisons were performed at March 31, 2020 19 Credit losses for loans that no one The estimation methodology for credit losses on lending-related commitments were similar to the process for estimating credit losses for loans, with the addition of a probability of draw estimate that will be applied to each commitment amount. Based upon the nature and characteristics of our securities portfolios at March 31, 2020, not In March 2020, 2020 04, Reference Rate Reform (Topic 848 March 12, 2020 December 31, 2022.

Note 11 - Fair Value Measuremen

Note 11 - Fair Value Measurement	3 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Fair Value Disclosures [Text Block]	NOTE 11 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 two 2 not two 3 March 31, 2020 December 31, 2019 Impaired Loans not not 820 10 3 March 31, 2020 December 31, 2019 three March 31, 2020, three March 31, 2019. Other Real Estate Owned not March 31, 2020 December 31, 2019 3 three March 31, 2020 2019, 3 There was one March 31, 2020, one December 31, 2019. One residential real estate loan for $600,000 was in the process of being foreclosed as of March 31, 2020 December 31, 2019. The following table presents the Company’s financial assets carried at fair value on a recurring basis as of March 31, 2020 December 31, 2019. no March 31, 2020 December 31, 2019. Fair Value Measurements at March 31, 2020 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 securities $ - $ 49,782 $ - $ 49,782 Government agency securities - 18,593 - 18,593 Mortgage-backed securities - 546,431 - 546,431 State and municipal securities - 51,328 - 51,328 Corporate debt - 154,001 6,647 160,648 Total assets at fair value $ - $ 820,135 $ 6,647 $ 826,782 Fair Value Measurements at December 31, 2019 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 securities $ - $ 49,210 $ - $ 49,210 Government agency securities - 18,386 - 18,386 Mortgage-backed securities - 474,054 - 474,054 State and municipal securities - 57,272 - 57,272 Corporate debt - 153,881 6,596 160,477 Total assets at fair value $ - $ 752,803 $ 6,596 $ 759,399 The following table presents the Company’s financial assets carried at fair value on a nonrecurring basis as of March 31, 2020 December 31, 2019. no March 31, 2020 December 31, 2019. Fair Value Measurements at March 31, 2020 Using Quoted Prices in Active Markets Significant Other Significant for Identical Observable Unobservable Assets (Level 1) Inputs (Level 2) Inputs (Level 3) Total Assets Measured on a Nonrecurring Basis: (In Thousands) Impaired loans $ - $ - $ 50,404 $ 50,404 Other real estate owned and repossessed assets - - 7,448 7,448 Total assets at fair value $ - $ - $ 57,852 $ 57,852 Fair Value Measurements at December 31, 2019 Using Quoted Prices in Active Markets Significant Other Significant for Identical Observable Unobservable Assets (Level 1) Inputs (Level 2) Inputs (Level 3) Total Assets Measured on a Nonrecurring Basis: (In Thousands) Impaired loans $ - $ - $ 33,344 $ 33,344 Other real estate owned - - 8,178 8,178 Total assets at fair value $ - $ - $ 41,522 $ 41,522 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 estimated fair values of the Company’s financial instruments not March 31, 2020 December 31, 2019 March 31, 2020 December 31, 2019 Carrying Carrying Amount Fair Value Amount Fair Value (In Thousands) Financial Assets: Level 1 inputs: Cash and cash equivalents $ 378,404 $ 378,404 $ 530,127 $ 530,127 Level 2 inputs: Federal funds sold 306,127 306,127 100,473 100,473 Mortgage loans held for sale 6,747 6,775 6,302 6,312 Level 3 Inputs: Held to maturity debt securities 250 250 250 250 Loans, net 7,433,018 7,401,907 7,151,523 7,099,198 Financial Liabilities: Level 2 inputs: Deposits $ 7,832,655 $ 7,817,647 $ 7,530,433 $ 7,534,984 Federal funds purchased 543,623 543,623 470,749 470,749 Other borrowings 64,707 64,950 64,703 65,048

Note 12 - Subsequent Events

Note 12 - Subsequent Events	3 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Subsequent Events [Text Block]	NOTE 12 In light of the US and global economic crisis brought about by the COVID- 19 500 April 17, 2020,

Note 3 - Earnings Per Common _2

Note 3 - Earnings Per Common Share (Tables)	3 Months Ended
	Mar. 31, 2020
Notes Tables
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	Three Months Ended March 31, 2020 2019 (In Thousands, Except Shares and Per Share Data) Earnings per common share Weighted average common shares outstanding 53,704,224 53,465,091 Net income available to common stockholders $ 34,778 $ 35,010 Basic earnings per common share $ 0.65 $ 0.65 Weighted average common shares outstanding 53,704,224 53,465,091 Dilutive effects of assumed conversions and exercise of stock options and warrants 463,190 611,447 Weighted average common and dilutive potential common shares outstanding 54,167,414 54,076,538 Net income available to common stockholders $ 34,778 $ 35,010 Diluted earnings per common share $ 0.64 $ 0.65

Note 4 - Securities (Tables)

Note 4 - Securities (Tables)	3 Months Ended
	Mar. 31, 2020
Notes Tables
Unrealized Gain (Loss) on Investments [Table Text Block]	Amortized Cost Gross Unrealized Gain Gross Unrealized Loss Fair Value March 31, 2020 (In Thousands) Available for sale debt securities U.S. Treasury Securities $ 48,956 $ 826 $ - $ 49,782 Government Agency Securities 18,188 405 - 18,593 Mortgage-backed securities 529,126 17,305 - 546,431 State and municipal securities 50,989 353 (14 ) 51,328 Corporate debt 157,496 3,652 (500 ) 160,648 Total $ 804,755 $ 22,541 $ (514 ) $ 826,782 Held to maturity debt securities State and municipal securities $ 250 $ - $ - $ 250 Total $ 250 $ - $ - $ 250 December 31, 2019 Available for sale debt securities U.S. Treasury Securities $ 48,923 $ 291 $ (4 ) $ 49,210 Government Agency Securities 18,245 143 (2 ) 18,386 Mortgage-backed securities 470,513 4,859 (1,318 ) 474,054 State and municipal securities 56,951 335 (14 ) 57,272 Corporate debt 157,549 3,098 (170 ) 160,477 Total $ 752,181 $ 8,726 $ (1,508 ) $ 759,399 Held to maturity debt securities State and municipal securities $ 250 $ - $ - $ 250 Total $ 250 $ - $ - $ 250
Fair Value, Assets Measured on Recurring Basis [Table Text Block]	March 31, 2020 December 31, 2019 Amortized Cost Fair Value Amortized Cost Fair Value (In thousands) Available for sale debt securities Due within one year $ 59,924 $ 60,306 $ 58,722 $ 58,975 Due from one to five years 83,414 84,963 90,034 91,005 Due from five to ten years 130,876 133,641 129,501 131,914 Due after ten years 1,415 1,441 3,411 3,451 Mortgage-backed securities 529,126 546,431 470,513 474,054 $ 804,755 $ 826,782 $ 752,181 $ 759,399 Held to maturity debt securities 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) March 31, 2020 State and municipal securities $ (10 ) $ 3,582 $ (4 ) $ 721 $ (14 ) $ 4,303 Corporate debt (500 ) 15,478 - - (500 ) 15,478 Total $ (510 ) $ 19,060 $ (4 ) $ 721 $ (514 ) $ 19,781 December 31, 2019 U.S. Treasury Securities $ (4 ) $ 3,012 $ - $ - $ (4 ) $ 3,012 Government Agency Securities (2 ) 266 - - (2 ) 266 Mortgage-backed securities (1,206 ) 153,330 (112 ) 24,911 (1,318 ) 178,241 State and municipal securities (4 ) 1,900 (10 ) 2,647 (14 ) 4,547 Corporate debt (170 ) 19,981 - - (170 ) 19,981 Total $ (1,386 ) $ 178,489 $ (122 ) $ 27,558 $ (1,508 ) $ 206,047

Note 5 - Loans (Tables)

Note 5 - Loans (Tables)	3 Months Ended
	Mar. 31, 2020
Notes Tables
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]	March 31, December 31, 2020 2019 (Dollars In Thousands) Commercial, financial and agricultural $ 2,771,307 $ 2,696,210 Real estate - construction 548,578 521,392 Real estate - mortgage: Owner-occupied commercial 1,678,532 1,587,478 1-4 family mortgage 675,870 644,188 Other mortgage 1,834,137 1,747,394 Subtotal: Real estate - mortgage 4,188,539 3,979,060 Consumer 60,412 64,789 Total Loans 7,568,836 7,261,451 Less: Allowance for loan losses (85,414 ) (76,584 ) Net Loans $ 7,483,422 $ 7,184,867 Commercial, financial and agricultural 36.61 % 37.13 % Real estate - construction 7.25 % 7.18 % Real estate - mortgage: Owner-occupied commercial 22.18 % 21.86 % 1-4 family mortgage 8.93 % 8.87 % Other mortgage 24.23 % 24.07 % Subtotal: Real estate - mortgage 55.34 % 54.80 % Consumer 0.80 % 0.89 % Total Loans 100.00 % 100.00 %
Financing Receivable Credit Quality Indicators [Table Text Block]	Special March 31, 2020 Pass Mention Substandard Doubtful Total (In Thousands) Commercial, financial and agricultural $ 2,708,845 $ 17,902 $ 44,560 $ - $ 2,771,307 Real estate - construction 542,659 4,136 1,783 - 548,578 Real estate - mortgage: Owner-occupied commercial 1,658,909 11,014 8,609 - 1,678,532 1-4 family mortgage 671,407 2,080 2,383 - 675,870 Other mortgage 1,824,825 7,557 1,755 - 1,834,137 Total real estate - mortgage 4,155,141 20,651 12,747 - 4,188,539 Consumer 60,403 - 9 - 60,412 Total $ 7,467,048 $ 42,689 $ 59,099 $ - $ 7,568,836 Special December 31, 2019 Pass Mention Substandard Doubtful Total (In Thousands) Commercial, financial and agricultural $ 2,629,487 $ 46,176 $ 20,547 $ - $ 2,696,210 Real estate - construction 512,373 4,731 4,288 - 521,392 Real estate - mortgage: Owner-occupied commercial 1,555,283 18,240 13,955 - 1,587,478 1-4 family mortgage 639,959 2,787 1,442 - 644,188 Other mortgage 1,735,869 10,018 1,507 - 1,747,394 Total real estate - mortgage 3,931,111 31,045 16,904 - 3,979,060 Consumer 64,789 - - - 64,789 Total $ 7,137,760 $ 81,952 $ 41,739 $ - $ 7,261,451
Financing Receivable, Credit Substitute, Credit Quality Indicator [Table Text Block]	March 31, 2020 Performing Nonperforming Total (In Thousands) Commercial, financial and agricultural $ 2,756,132 $ 15,175 $ 2,771,307 Real estate - construction 546,774 1,804 548,578 Real estate - mortgage: Owner-occupied commercial 1,668,297 10,235 1,678,532 1-4 family mortgage 674,134 1,736 675,870 Other mortgage 1,829,244 4,893 1,834,137 Total real estate - mortgage 4,171,675 16,864 4,188,539 Consumer 60,387 25 60,412 Total $ 7,534,968 $ 33,868 $ 7,568,836 December 31, 2019 Performing Nonperforming Total (In Thousands) Commercial, financial and agricultural $ 2,681,280 $ 14,930 $ 2,696,210 Real estate - construction 519,803 1,589 521,392 Real estate - mortgage: Owner-occupied commercial 1,576,652 10,826 1,587,478 1-4 family mortgage 641,875 2,313 644,188 Other mortgage 1,740,963 6,431 1,747,394 Total real estate - mortgage 3,959,490 19,570 3,979,060 Consumer 64,766 23 64,789 Total $ 7,225,339 $ 36,112 $ 7,261,451
Financing Receivable, Past Due [Table Text Block]	March 31, 2020 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 $ 1,859 $ 211 $ 45 $ 2,115 $ 15,130 $ 2,754,062 $ 2,771,307 Real estate - construction - - - - 1,804 546,774 548,578 Real estate - mortgage: Owner-occupied commercial 2,389 1,778 - 4,167 10,235 1,664,130 1,678,532 1-4 family mortgage 2,191 - - 2,191 1,736 671,943 675,870 Other mortgage - - 4,893 4,893 - 1,829,244 1,834,137 Total real estate - mortgage 4,580 1,778 4,893 11,251 11,971 4,165,317 4,188,539 Consumer 83 31 16 130 9 60,273 60,412 Total $ 6,522 $ 2,020 $ 4,954 $ 13,496 $ 28,914 $ 7,526,426 $ 7,568,836 December 31, 2019 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 $ 3,135 $ 344 $ 201 $ 3,680 $ 14,729 $ 2,677,801 $ 2,696,210 Real estate - construction 830 - - 830 1,589 518,973 521,392 Real estate - mortgage: Owner-occupied commercial 917 7,242 - 8,159 10,826 1,568,493 1,587,478 1-4 family mortgage 1,638 567 873 3,078 1,440 639,670 644,188 Other mortgage - - 4,924 4,924 1,507 1,740,963 1,747,394 Total real estate - mortgage 2,555 7,809 5,797 16,161 13,773 3,949,126 3,979,060 Consumer 35 25 23 83 - 64,706 64,789 Total $ 6,555 $ 8,178 $ 6,021 $ 20,754 $ 30,091 $ 7,210,606 $ 7,261,451
Financing Receivable, Allowance for Credit Loss [Table Text Block]	Commercial, financial and Real estate - Real estate - agricultural construction mortgage Consumer Total (In Thousands) Three Months Ended March 31, 2020 Allowance for loan losses: Balance at December 31, 2019 $ 43,666 $ 2,768 $ 29,653 $ 497 $ 76,584 Charge-offs (2,640 ) (454 ) (1,678 ) (58 ) (4,830 ) Recoveries 62 1 1 12 76 Provision 7,692 1,442 4,384 66 13,584 Balance at March 31, 2020 $ 48,780 $ 3,757 $ 32,360 $ 517 $ 85,414 Three Months Ended March 31, 2019 Allowance for loan losses: Balance at December 31, 2018 $ 39,016 $ 3,522 $ 25,508 $ 554 $ 68,600 Charge-offs (3,037 ) - (50 ) (218 ) (3,305 ) Recoveries 12 1 7 7 27 Provision 3,468 72 1,246 99 4,885 Balance at March 31, 2019 $ 39,459 $ 3,595 $ 26,711 $ 442 $ 70,207 As of March 31, 2020 Allowance for loan losses: Individually Evaluated for Impairment $ 8,840 $ 351 $ 931 $ - $ 10,122 Collectively Evaluated for Impairment 39,940 3,406 31,429 517 75,292 Loans: Ending Balance $ 2,771,307 $ 548,578 $ 4,188,539 $ 60,412 $ 7,568,836 Individually Evaluated for Impairment 44,868 1,834 13,815 9 60,526 Collectively Evaluated for Impairment 2,726,439 546,744 4,174,724 60,403 7,508,310 As of December 31, 2019 Allowance for loan losses: Individually Evaluated for Impairment $ 6,085 $ 86 $ 3,633 $ - $ 9,804 Collectively Evaluated for Impairment 37,581 2,682 26,020 497 66,780 Loans: Ending Balance $ 2,696,210 $ 521,392 $ 3,979,060 $ 64,789 $ 7,261,451 Individually Evaluated for Impairment 20,843 4,320 17,985 - 43,148 Collectively Evaluated for Impairment 2,675,367 517,072 3,961,075 64,789 7,218,303
Impaired Financing Receivables [Table Text Block]	March 31, 2020 For the three months ended March 31, 2020 Interest Unpaid Average Income Recorded Principal Related Recorded Recognized Investment Balance Allowance Investment in Period (In Thousands) With no allowance recorded: Commercial, financial and agricultural $ 12,360 $ 12,360 $ - $ 12,352 $ 176 Real estate - construction 30 34 - 35 - Real estate - mortgage: Owner-occupied commercial 2,195 2,291 - 2,299 33 1-4 family mortgage 717 717 - 735 1 Other mortgage 1,701 1,701 - 1,731 18 Total real estate - mortgage 4,613 4,709 - 4,765 52 Consumer 9 9 - 9 - Total with no allowance recorded 17,012 17,112 - 17,161 228 With an allowance recorded: Commercial, financial and agricultural 32,508 32,775 8,840 33,186 239 Real estate - construction 1,804 1,882 351 2,749 - Real estate - mortgage: Owner-occupied commercial 7,487 12,127 827 12,159 5 1-4 family mortgage 1,662 1,822 104 1,526 4 Other mortgage 53 53 - 156 2 Total real estate - mortgage 9,202 14,002 931 13,841 11 Consumer - - - - - Total with allowance recorded 43,514 48,659 10,122 49,776 250 Total Impaired Loans: Commercial, financial and agricultural 44,868 45,135 8,840 45,538 415 Real estate - construction 1,834 1,916 351 2,784 - Real estate - mortgage: Owner-occupied commercial 9,682 14,418 827 14,458 38 1-4 family mortgage 2,379 2,539 104 2,261 5 Other mortgage 1,754 1,754 - 1,887 20 Total real estate - mortgage 13,815 18,711 931 18,606 63 Consumer 9 9 - 9 - Total impaired loans $ 60,526 $ 65,771 $ 10,122 $ 66,937 $ 478 December 31, 2019 For the twelve months ended December 31, 2019 Interest Unpaid Average Income Recorded Principal Related Recorded Recognized Investment Balance Allowance Investment In Period (In Thousands) With no allowance recorded: Commercial, financial and agricultural $ 9,015 $ 10,563 $ - $ 11,284 $ 562 Real estate - construction 2,731 2,735 - 2,063 126 Real estate - mortgage: Owner-occupied commercial 7,150 7,246 - 7,548 618 1-4 family mortgage 287 287 - 289 2 Total real estate - mortgage 7,437 7,533 - 7,837 620 Consumer - - - - - Total with no allowance recorded 19,183 20,831 - 21,184 1,308 With an allowance recorded: Commercial, financial and agricultural 11,828 19,307 6,085 19,714 395 Real estate - construction 1,589 1,589 86 1,614 27 Real estate - mortgage: Owner-occupied commercial 7,888 11,028 2,456 13,627 301 1-4 family mortgage 1,153 1,153 176 1,157 1 Other mortgage 1,507 1,507 1,001 1,468 21 Total real estate - mortgage 10,548 13,688 3,633 16,252 323 Consumer - - - - - Total with allowance recorded 23,965 34,584 9,804 37,580 745 Total Impaired Loans: Commercial, financial and agricultural 20,843 29,870 6,085 30,998 957 Real estate - construction 4,320 4,324 86 3,677 153 Real estate - mortgage: Owner-occupied commercial 15,038 18,274 2,456 21,175 919 1-4 family mortgage 1,440 1,440 176 1,446 3 Other mortgage 1,507 1,507 1,001 1,468 21 Total real estate - mortgage 17,985 21,221 3,633 24,089 943 Total impaired loans $ 43,148 $ 55,415 $ 9,804 $ 58,764 $ 2,053
Financing Receivable, Troubled Debt Restructuring [Table Text Block]	2020 Pre- Post- Modification Modification Outstanding Outstanding Number of Recorded Recorded Contracts Investment Investment (In Thousands) Troubled Debt Restructurings Commercial, financial and agricultural 1 $ 350 $ 350 Real estate - construction - - - Real estate - mortgage: Owner-occupied commercial - - - 1-4 family mortgage - - - Other mortgage - - - Total real estate mortgage - - - Consumer - - - 1 $ 350 $ 350

Note 6 - Leases (Tables)

Note 6 - Leases (Tables)	3 Months Ended
	Mar. 31, 2020
Notes Tables
Lessee, Operating Lease, Liability, Maturity [Table Text Block]	March 31, 2020 (In Thousands) 2020 (remaining) $ 2,544 2021 2,688 2022 2,655 2023 2,181 2024 1,180 thereafter 2,570 Total lease payments 13,818 Less: imputed interest (1,224 ) Present value of operating lease liabilities $ 12,594
Lease, Cost [Table Text Block]	Three Months Ended March 31, 2020 2019 Operating lease cost $ 873 $ 840 Short-term lease cost 16 9 Variable lease cost 44 38 Sublease income (16 ) (6 ) Net lease cost $ 917 $ 881

Note 7 - Employee and Directo_2

Note 7 - Employee and Director Benefits (Tables)	3 Months Ended
	Mar. 31, 2020
Notes Tables
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]	2019 Expected volatility 40.00 % Expected dividends 1.76 % Expected term (in years) 6.3 Risk-free rate 2.61 %
Share-based Payment Arrangement, Option, Activity [Table Text Block]	Weighted Weighted Average Average Remaining Exercise Contractual Aggregate Shares Price Term (years) Intrinsic Value (In Thousands) Three Months Ended March 31, 2020: Outstanding January 1, 2020 965,248 $ 15.19 4.9 $ 21,911 Granted - - - - Exercised (216,000 ) 10.47 3.3 4,072 Forfeited (18,000 ) 30.79 6.9 26 Outstanding March 31, 2020 731,248 17.68 5.4 $ 12,969 Exercisable March 31, 2020 210,500 $ 16.54 5.0 $ 7,146 Three Months Ended March 31, 2019: Outstanding January 1, 2019 1,238,748 $ 13.02 5.2 $ 23,355 Granted 6,000 34.09 9.8 (2 ) Exercised (162,500 ) 4.59 1.7 4,384 Forfeited - - - - Outstanding March 31, 2019 1,082,248 14.41 6.3 $ 21,318 Exercisable March 31, 2019 354,800 $ 8.40 4.0 $ 9,356
Nonvested Restricted Stock Shares Activity [Table Text Block]	Shares Weighted Average Grant Date Fair Value Three Months Ended March 31, 2020: Non-vested at January 1, 2020 71,290 $ 31.53 Granted 15,300 39.45 Vested (8,376 ) 18.64 Forfeited - - Non-vested at March 31, 2020 78,214 34.46 Three Months Ended March 31, 2019: Non-vested at January 1, 2019 44,076 $ 28.94 Granted 2,700 34.09 Vested (5,200 ) 20.31 Forfeited - - Non-vested at March 31, 2019 41,576 30.35

Note 11 - Fair Value Measurem_2

Note 11 - Fair Value Measurement (Tables)	3 Months Ended
	Mar. 31, 2020
Notes Tables
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]	Fair Value Measurements at March 31, 2020 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 securities $ - $ 49,782 $ - $ 49,782 Government agency securities - 18,593 - 18,593 Mortgage-backed securities - 546,431 - 546,431 State and municipal securities - 51,328 - 51,328 Corporate debt - 154,001 6,647 160,648 Total assets at fair value $ - $ 820,135 $ 6,647 $ 826,782 Fair Value Measurements at December 31, 2019 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 securities $ - $ 49,210 $ - $ 49,210 Government agency securities - 18,386 - 18,386 Mortgage-backed securities - 474,054 - 474,054 State and municipal securities - 57,272 - 57,272 Corporate debt - 153,881 6,596 160,477 Total assets at fair value $ - $ 752,803 $ 6,596 $ 759,399
Fair Value Measurements, Nonrecurring [Table Text Block]	Fair Value Measurements at March 31, 2020 Using Quoted Prices in Active Markets Significant Other Significant for Identical Observable Unobservable Assets (Level 1) Inputs (Level 2) Inputs (Level 3) Total Assets Measured on a Nonrecurring Basis: (In Thousands) Impaired loans $ - $ - $ 50,404 $ 50,404 Other real estate owned and repossessed assets - - 7,448 7,448 Total assets at fair value $ - $ - $ 57,852 $ 57,852 Fair Value Measurements at December 31, 2019 Using Quoted Prices in Active Markets Significant Other Significant for Identical Observable Unobservable Assets (Level 1) Inputs (Level 2) Inputs (Level 3) Total Assets Measured on a Nonrecurring Basis: (In Thousands) Impaired loans $ - $ - $ 33,344 $ 33,344 Other real estate owned - - 8,178 8,178 Total assets at fair value $ - $ - $ 41,522 $ 41,522
Fair Value, by Balance Sheet Grouping [Table Text Block]	March 31, 2020 December 31, 2019 Carrying Carrying Amount Fair Value Amount Fair Value (In Thousands) Financial Assets: Level 1 inputs: Cash and cash equivalents $ 378,404 $ 378,404 $ 530,127 $ 530,127 Level 2 inputs: Federal funds sold 306,127 306,127 100,473 100,473 Mortgage loans held for sale 6,747 6,775 6,302 6,312 Level 3 Inputs: Held to maturity debt securities 250 250 250 250 Loans, net 7,433,018 7,401,907 7,151,523 7,099,198 Financial Liabilities: Level 2 inputs: Deposits $ 7,832,655 $ 7,817,647 $ 7,530,433 $ 7,534,984 Federal funds purchased 543,623 543,623 470,749 470,749 Other borrowings 64,707 64,950 64,703 65,048

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
	Mar. 31, 2020	Mar. 31, 2019
Weighted average common shares outstanding (in shares)	53,704,224	53,465,091
Net income available to common stockholders	$ 34,778	$ 35,010
Basic earnings per common share (in dollars per share)	$ 0.65	$ 0.65
Dilutive effects of assumed conversions and exercise of stock options and warrants (in shares)	463,190	611,447
Weighted average common and dilutive potential common shares outstanding (in shares)	54,167,414	54,076,538
Net income available to common stockholders	$ 34,778	$ 35,010
Diluted earnings per common share (in dollars per share)	$ 0.64	$ 0.65

Note 4 - Securities (Details Te

Note 4 - Securities (Details Textual) $ in Millions	Mar. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions	4
Available for Sale Securities Debt Securities, Number of Positions	678
Pledged Financial Instruments, Not Separately Reported, Securities, Total	$ 437.6	$ 389.9

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	Mar. 31, 2020	Dec. 31, 2019
Available for sale, amortized cost	$ 804,755	$ 752,181
Available for sale, gross unrealized gain	22,541	8,726
Available for sale, gross unrealized loss	(514)	(1,508)
Available for sale, fair value	826,782	759,399	[1]
Held to maturity, amortized cost	250	250
Held to maturity, gross unrealized gain	0	0
Held to maturity, gross unrealized loss	0	0
Held to maturity debt securities, fair value	250	250
US Treasury Securities [Member]
Available for sale, amortized cost	48,956	48,923
Available for sale, gross unrealized gain	826	291
Available for sale, gross unrealized loss	0	(4)
Available for sale, fair value	49,782	49,210
US Government Agencies Debt Securities [Member]
Available for sale, amortized cost	18,188	18,245
Available for sale, gross unrealized gain	405	143
Available for sale, gross unrealized loss	0	(2)
Available for sale, fair value	18,593	18,386
Collateralized Mortgage Backed Securities [Member]
Available for sale, amortized cost	529,126	470,513
Available for sale, gross unrealized gain	17,305	4,859
Available for sale, gross unrealized loss	0	(1,318)
Available for sale, fair value	546,431	474,054
US States and Political Subdivisions Debt Securities [Member]
Available for sale, amortized cost	50,989	56,951
Available for sale, gross unrealized gain	353	335
Available for sale, gross unrealized loss	(14)	(14)
Available for sale, fair value	51,328	57,272
Held to maturity, amortized cost	250	250
Held to maturity, gross unrealized gain	0	0
Held to maturity, gross unrealized loss	0	0
Held to maturity debt securities, fair value	250	250
Corporate Debt Securities [Member]
Available for sale, amortized cost	157,496	157,549
Available for sale, gross unrealized gain	3,652	3,098
Available for sale, gross unrealized loss	(500)	(170)
Available for sale, fair value	$ 160,648	$ 160,477
[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	Mar. 31, 2020	Dec. 31, 2019
Due within one year, amortized cost	$ 59,924	$ 58,722
Due within one year, fair value	60,306	58,975
Due from one to five years, amortized cost	83,414	90,034
Due from one to five years, fair value	84,963	91,005
Due from five to ten years, amortized cost	130,876	129,501
Due from five to ten years, fair value	133,641	131,914
Due after ten years, amortized cost	1,415	3,411
Due after ten years, fair value	1,441	3,451
Mortgage-backed securities, amortized cost	529,126	470,513
Mortgage-backed securities, fair value	546,431	474,054
Available for sale, amortized cost	804,755	752,181
Available for sale, fair value	826,782	759,399	[1]
Due from one to five years, amortized cost	250	250
Due from one to five years, fair value	250	250
Held to maturity, amortized cost	250	250	[1]
Held to maturity debt securities, fair value	$ 250	$ 250
[1]	derived from audited financial statements.

Note 4 - Securities - Investmen

Note 4 - Securities - Investment Securities Continuous Unrealized Loss Position (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Less Than Twelve Months, Gross Unrealized Losses	$ (510)	$ (1,386)
Less Than Twelve Months, Fair Value	19,060	178,489
Twelve Months or More, Gross Unrealized Losses	(4)	(122)
Twelve Months or More, Fair Value	721	27,558
Total, Gross Unrealized Losses	(514)	(1,508)
Total, Fair Value	19,781	206,047
US States and Political Subdivisions Debt Securities [Member]
Less Than Twelve Months, Gross Unrealized Losses	(10)	(4)
Less Than Twelve Months, Fair Value	3,582	1,900
Twelve Months or More, Gross Unrealized Losses	(4)	(10)
Twelve Months or More, Fair Value	721	2,647
Total, Gross Unrealized Losses	(14)	(14)
Total, Fair Value	4,303	4,547
Corporate Debt Securities [Member]
Less Than Twelve Months, Gross Unrealized Losses	(500)	(170)
Less Than Twelve Months, Fair Value	15,478	19,981
Twelve Months or More, Gross Unrealized Losses	0	0
Twelve Months or More, Fair Value	0	0
Total, Gross Unrealized Losses	(500)	(170)
Total, Fair Value	$ 15,478	19,981
US Treasury Securities [Member]
Less Than Twelve Months, Gross Unrealized Losses		(4)
Less Than Twelve Months, Fair Value		3,012
Twelve Months or More, Gross Unrealized Losses		0
Twelve Months or More, Fair Value		0
Total, Gross Unrealized Losses		(4)
Total, Fair Value		3,012
US Government Agencies Debt Securities [Member]
Less Than Twelve Months, Gross Unrealized Losses		(2)
Less Than Twelve Months, Fair Value		266
Twelve Months or More, Gross Unrealized Losses		0
Twelve Months or More, Fair Value		0
Total, Gross Unrealized Losses		(2)
Total, Fair Value		266
Collateralized Mortgage Backed Securities [Member]
Less Than Twelve Months, Gross Unrealized Losses		(1,206)
Less Than Twelve Months, Fair Value		153,330
Twelve Months or More, Gross Unrealized Losses		(112)
Twelve Months or More, Fair Value		24,911
Total, Gross Unrealized Losses		(1,318)
Total, Fair Value		$ 178,241

Note 5 - Loans (Details Textual

Note 5 - Loans (Details Textual)	3 Months Ended		12 Months Ended
	Mar. 31, 2020USD ($)	Mar. 31, 2019USD ($)	Dec. 31, 2019USD ($)		Dec. 31, 2018USD ($)
Provision for Loan and Lease Losses, Total	$ 85,414,000	$ 70,207,000	$ 76,584,000	[1]	$ 68,600,000
Financing Receivable, Number of Payment Deferrals	730
Financing Receivable, Payment Deferral, Recorded Investment	$ 574,700,000
Financing Receivable, Troubled Debt Restructuring	2,400,000	12,300,000	3,300,000
Financing Receivable, Modifications, Recorded Investment, Accruing Interest	2,400,000	2,700,000	3,300,000
Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down	$ 223,000	$ 2,600,000	$ 929,000
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts	0
Financing Receivable, Modifications, Number of Contracts	1
Commercial Portfolio Segment [Member]
Financing Receivable, Troubled Debt Restructuring	$ 350,000
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts		2
Financing Receivable, Troubled Debt Restructuring, Subsequent Default		$ 325,000
Financing Receivable, Modifications, Number of Contracts	1
Principal Only Deferrals [Member]
Financing Receivable, Number of Payment Deferrals	720
Financing Receivable, Payment Deferral, Recorded Investment	$ 547,800,000
Interest Only Deferral [Member]
Financing Receivable, Number of Payment Deferrals	5
Financing Receivable, Payment Deferral, Recorded Investment	$ 18,300,000
Principal and Interest Deferrals [Member]
Financing Receivable, Number of Payment Deferrals	5
Financing Receivable, Payment Deferral, Recorded Investment	$ 8,600,000
COVID-19 [Member]
Provision for Loan and Lease Losses, Total	$ 6,700,000
[1]	derived from audited financial statements.

Note 5 - Loans - Summary of Loa

Note 5 - Loans - Summary of Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019		Mar. 31, 2019	Dec. 31, 2018
Financing receivable, gross	$ 7,568,836	$ 7,261,451
Less: Allowance for loan losses	(85,414)	(76,584)	[1]	$ (70,207)	$ (68,600)
Net Loans	$ 7,483,422	$ 7,184,867	[1]
Financing receivable, gross percentage	100.00%	100.00%
Commercial Real Estate Portfolio Segment [Member]
Financing receivable, gross	$ 2,771,307	$ 2,696,210
Less: Allowance for loan losses	$ (48,780)	$ (43,666)		(39,459)	(39,016)
Financing receivable, gross percentage	36.61%	37.13%
Real Estate Portfolio Segment[Member]
Financing receivable, gross	$ 4,188,539	$ 3,979,060
Financing receivable, gross percentage	55.34%	54.80%
Real Estate Portfolio Segment[Member] | Construction Loans [Member]
Financing receivable, gross	$ 548,578	$ 521,392
Less: Allowance for loan losses	$ (3,757)	$ (2,768)		(3,595)	(3,522)
Financing receivable, gross percentage	7.25%	7.18%
Real Estate Portfolio Segment[Member] | Owner Occupied Commercial [Member]
Financing receivable, gross	$ 1,678,532	$ 1,587,478
Financing receivable, gross percentage	22.18%	21.86%
Real Estate Portfolio Segment[Member] | One to Four Family [Member]
Financing receivable, gross	$ 675,870	$ 644,188
Financing receivable, gross percentage	8.93%	8.87%
Real Estate Portfolio Segment[Member] | Other Mortgages [Member]
Financing receivable, gross	$ 1,834,137	$ 1,747,394
Financing receivable, gross percentage	24.23%	24.07%
Consumer Portfolio Segment [Member]
Financing receivable, gross	$ 60,412	$ 64,789
Less: Allowance for loan losses	$ (517)	$ (497)		$ (442)	$ (554)
Financing receivable, gross percentage	0.80%	0.89%
[1]	derived from audited financial statements.

Note 5 - Loans - Loans by Credi

Note 5 - Loans - Loans by Credit Quality Indicator (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Financing receivable, gross	$ 7,568,836	$ 7,261,451
Pass [Member]
Financing receivable, gross	7,467,048	7,137,760
Special Mention [Member]
Financing receivable, gross	42,689	81,952
Substandard [Member]
Financing receivable, gross	59,099	41,739
Doubtful [Member]
Financing receivable, gross	0	0
Commercial Real Estate Portfolio Segment [Member]
Financing receivable, gross	2,771,307	2,696,210
Commercial Real Estate Portfolio Segment [Member] | Pass [Member]
Financing receivable, gross	2,708,845	2,629,487
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member]
Financing receivable, gross	17,902	46,176
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member]
Financing receivable, gross	44,560	20,547
Commercial Real Estate Portfolio Segment [Member] | Doubtful [Member]
Financing receivable, gross	0	0
Real Estate Portfolio Segment[Member]
Financing receivable, gross	4,188,539	3,979,060
Real Estate Portfolio Segment[Member] | Construction Loans [Member]
Financing receivable, gross	548,578	521,392
Real Estate Portfolio Segment[Member] | Owner Occupied Commercial [Member]
Financing receivable, gross	1,678,532	1,587,478
Real Estate Portfolio Segment[Member] | One to Four Family [Member]
Financing receivable, gross	675,870	644,188
Real Estate Portfolio Segment[Member] | Other Mortgages [Member]
Financing receivable, gross	1,834,137	1,747,394
Real Estate Portfolio Segment[Member] | Pass [Member]
Financing receivable, gross	4,155,141	3,931,111
Real Estate Portfolio Segment[Member] | Pass [Member] | Construction Loans [Member]
Financing receivable, gross	542,659	512,373
Real Estate Portfolio Segment[Member] | Pass [Member] | Owner Occupied Commercial [Member]
Financing receivable, gross	1,658,909	1,555,283
Real Estate Portfolio Segment[Member] | Pass [Member] | One to Four Family [Member]
Financing receivable, gross	671,407	639,959
Real Estate Portfolio Segment[Member] | Pass [Member] | Other Mortgages [Member]
Financing receivable, gross	1,824,825	1,735,869
Real Estate Portfolio Segment[Member] | Special Mention [Member]
Financing receivable, gross	20,651	31,045
Real Estate Portfolio Segment[Member] | Special Mention [Member] | Construction Loans [Member]
Financing receivable, gross	4,136	4,731
Real Estate Portfolio Segment[Member] | Special Mention [Member] | Owner Occupied Commercial [Member]
Financing receivable, gross	11,014	18,240
Real Estate Portfolio Segment[Member] | Special Mention [Member] | One to Four Family [Member]
Financing receivable, gross	2,080	2,787
Real Estate Portfolio Segment[Member] | Special Mention [Member] | Other Mortgages [Member]
Financing receivable, gross	7,557	10,018
Real Estate Portfolio Segment[Member] | Substandard [Member]
Financing receivable, gross	12,747	16,904
Real Estate Portfolio Segment[Member] | Substandard [Member] | Construction Loans [Member]
Financing receivable, gross	1,783	4,288
Real Estate Portfolio Segment[Member] | Substandard [Member] | Owner Occupied Commercial [Member]
Financing receivable, gross	8,609	13,955
Real Estate Portfolio Segment[Member] | Substandard [Member] | One to Four Family [Member]
Financing receivable, gross	2,383	1,442
Real Estate Portfolio Segment[Member] | Substandard [Member] | Other Mortgages [Member]
Financing receivable, gross	1,755	1,507
Real Estate Portfolio Segment[Member] | Doubtful [Member]
Financing receivable, gross	0	0
Real Estate Portfolio Segment[Member] | Doubtful [Member] | Construction Loans [Member]
Financing receivable, gross	0	0
Real Estate Portfolio Segment[Member] | Doubtful [Member] | Owner Occupied Commercial [Member]
Financing receivable, gross	0	0
Real Estate Portfolio Segment[Member] | Doubtful [Member] | One to Four Family [Member]
Financing receivable, gross	0	0
Real Estate Portfolio Segment[Member] | Doubtful [Member] | Other Mortgages [Member]
Financing receivable, gross	0	0
Consumer Portfolio Segment [Member]
Financing receivable, gross	60,412	64,789
Consumer Portfolio Segment [Member] | Pass [Member]
Financing receivable, gross	60,403	64,789
Consumer Portfolio Segment [Member] | Special Mention [Member]
Financing receivable, gross	0	0
Consumer Portfolio Segment [Member] | Substandard [Member]
Financing receivable, gross	9	0
Consumer Portfolio Segment [Member] | Doubtful [Member]
Financing receivable, gross	$ 0	$ 0

Note 5 - Loans - Loans by Perfo

Note 5 - Loans - Loans by Performance Status (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Financing receivable, gross	$ 7,568,836	$ 7,261,451
Performing Financial Instruments [Member]
Financing receivable, gross	7,534,968	7,225,339
Nonperforming Financial Instruments [Member]
Financing receivable, gross	33,868	36,112
Commercial Real Estate Portfolio Segment [Member]
Financing receivable, gross	2,771,307	2,696,210
Commercial Real Estate Portfolio Segment [Member] | Performing Financial Instruments [Member]
Financing receivable, gross	2,756,132	2,681,280
Commercial Real Estate Portfolio Segment [Member] | Nonperforming Financial Instruments [Member]
Financing receivable, gross	15,175	14,930
Real Estate Portfolio Segment[Member]
Financing receivable, gross	4,188,539	3,979,060
Real Estate Portfolio Segment[Member] | Construction Loans [Member]
Financing receivable, gross	548,578	521,392
Real Estate Portfolio Segment[Member] | Owner Occupied Commercial [Member]
Financing receivable, gross	1,678,532	1,587,478
Real Estate Portfolio Segment[Member] | One to Four Family [Member]
Financing receivable, gross	675,870	644,188
Real Estate Portfolio Segment[Member] | Other Mortgages [Member]
Financing receivable, gross	1,834,137	1,747,394
Real Estate Portfolio Segment[Member] | Performing Financial Instruments [Member]
Financing receivable, gross	4,171,675	3,959,490
Real Estate Portfolio Segment[Member] | Performing Financial Instruments [Member] | Construction Loans [Member]
Financing receivable, gross	546,774	519,803
Real Estate Portfolio Segment[Member] | Performing Financial Instruments [Member] | Owner Occupied Commercial [Member]
Financing receivable, gross	1,668,297	1,576,652
Real Estate Portfolio Segment[Member] | Performing Financial Instruments [Member] | One to Four Family [Member]
Financing receivable, gross	674,134	641,875
Real Estate Portfolio Segment[Member] | Performing Financial Instruments [Member] | Other Mortgages [Member]
Financing receivable, gross	1,829,244	1,740,963
Real Estate Portfolio Segment[Member] | Nonperforming Financial Instruments [Member]
Financing receivable, gross	16,864	19,570
Real Estate Portfolio Segment[Member] | Nonperforming Financial Instruments [Member] | Construction Loans [Member]
Financing receivable, gross	1,804	1,589
Real Estate Portfolio Segment[Member] | Nonperforming Financial Instruments [Member] | Owner Occupied Commercial [Member]
Financing receivable, gross	10,235	10,826
Real Estate Portfolio Segment[Member] | Nonperforming Financial Instruments [Member] | One to Four Family [Member]
Financing receivable, gross	1,736	2,313
Real Estate Portfolio Segment[Member] | Nonperforming Financial Instruments [Member] | Other Mortgages [Member]
Financing receivable, gross	4,893	6,431
Consumer Portfolio Segment [Member]
Financing receivable, gross	60,412	64,789
Consumer Portfolio Segment [Member] | Performing Financial Instruments [Member]
Financing receivable, gross	60,387	64,766
Consumer Portfolio Segment [Member] | Nonperforming Financial Instruments [Member]
Financing receivable, gross	$ 25	$ 23

Note 5 - Loans - Loans Categori

Note 5 - Loans - Loans Categorized by Past Due Status (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Accrual loans, past due	$ 13,496	$ 20,754
Non-accrual	28,914	30,091
Current	7,526,426	7,210,606
Total loans	7,568,836	7,261,451	[1]
Financial Asset, 30 to 59 Days Past Due [Member]
Accrual loans, past due	6,522	6,555
Financial Asset, 60 to 89 Days Past Due [Member]
Accrual loans, past due	2,020	8,178
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Accrual loans, past due	4,954	6,021
Commercial Real Estate Portfolio Segment [Member]
Accrual loans, past due	2,115	3,680
Non-accrual	15,130	14,729
Current	2,754,062	2,677,801
Total loans	2,771,307	2,696,210
Commercial Real Estate Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Accrual loans, past due	1,859	3,135
Commercial Real Estate Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Accrual loans, past due	211	344
Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Accrual loans, past due	45	201
Real Estate Portfolio Segment[Member]
Accrual loans, past due	11,251	16,161
Non-accrual	11,971	13,773
Current	4,165,317	3,949,126
Total loans	4,188,539	3,979,060
Real Estate Portfolio Segment[Member] | Construction Loans [Member]
Accrual loans, past due	0	830
Non-accrual	1,804	1,589
Current	546,774	518,973
Total loans	548,578	521,392
Real Estate Portfolio Segment[Member] | Owner Occupied Commercial [Member]
Accrual loans, past due	4,167	8,159
Non-accrual	10,235	10,826
Current	1,664,130	1,568,493
Total loans	1,678,532	1,587,478
Real Estate Portfolio Segment[Member] | One to Four Family [Member]
Accrual loans, past due	2,191	3,078
Non-accrual	1,736	1,440
Current	671,943	639,670
Total loans	675,870	644,188
Real Estate Portfolio Segment[Member] | Other Mortgages [Member]
Accrual loans, past due	4,893	4,924
Non-accrual	0	1,507
Current	1,829,244	1,740,963
Total loans	1,834,137	1,747,394
Real Estate Portfolio Segment[Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Accrual loans, past due	4,580	2,555
Real Estate Portfolio Segment[Member] | Financial Asset, 30 to 59 Days Past Due [Member] | Construction Loans [Member]
Accrual loans, past due	0	830
Real Estate Portfolio Segment[Member] | Financial Asset, 30 to 59 Days Past Due [Member] | Owner Occupied Commercial [Member]
Accrual loans, past due	2,389	917
Real Estate Portfolio Segment[Member] | Financial Asset, 30 to 59 Days Past Due [Member] | One to Four Family [Member]
Accrual loans, past due	2,191	1,638
Real Estate Portfolio Segment[Member] | Financial Asset, 30 to 59 Days Past Due [Member] | Other Mortgages [Member]
Accrual loans, past due	0	0
Real Estate Portfolio Segment[Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Accrual loans, past due	1,778	7,809
Real Estate Portfolio Segment[Member] | Financial Asset, 60 to 89 Days Past Due [Member] | Construction Loans [Member]
Accrual loans, past due	0	0
Real Estate Portfolio Segment[Member] | Financial Asset, 60 to 89 Days Past Due [Member] | Owner Occupied Commercial [Member]
Accrual loans, past due	1,778	7,242
Real Estate Portfolio Segment[Member] | Financial Asset, 60 to 89 Days Past Due [Member] | One to Four Family [Member]
Accrual loans, past due	0	567
Real Estate Portfolio Segment[Member] | Financial Asset, 60 to 89 Days Past Due [Member] | Other Mortgages [Member]
Accrual loans, past due	0	0
Real Estate Portfolio Segment[Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Accrual loans, past due	4,893	5,797
Real Estate Portfolio Segment[Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Construction Loans [Member]
Accrual loans, past due	0	0
Real Estate Portfolio Segment[Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Owner Occupied Commercial [Member]
Accrual loans, past due	0	0
Real Estate Portfolio Segment[Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | One to Four Family [Member]
Accrual loans, past due	0	873
Real Estate Portfolio Segment[Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Other Mortgages [Member]
Accrual loans, past due	4,893	4,924
Consumer Portfolio Segment [Member]
Accrual loans, past due	130	83
Non-accrual	9	0
Current	60,273	64,706
Total loans	60,412	64,789
Consumer Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Accrual loans, past due	83	35
Consumer Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Accrual loans, past due	31	25
Consumer Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Accrual loans, past due	$ 16	$ 23
[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
	Mar. 31, 2020		Mar. 31, 2019	Dec. 31, 2019
Balance, beginning of period	$ 76,584	[1]	$ 68,600
Charge-offs	(4,830)		(3,305)
Recoveries	76		27
Provision	13,584		4,885
Balance, end of period	85,414		70,207
Individually Evaluated for Impairment	10,122			$ 9,804
Collectively Evaluated for Impairment	75,292			66,780
Loans	7,568,836			7,261,451	[1]
Individually Evaluated for Impairment	60,526			43,148
Collectively Evaluated for Impairment	7,508,310			7,218,303
Commercial Real Estate Portfolio Segment [Member]
Balance, beginning of period	43,666		39,016
Charge-offs	(2,640)		(3,037)
Recoveries	62		12
Provision	7,692		3,468
Balance, end of period	48,780		39,459
Individually Evaluated for Impairment	8,840			6,085
Collectively Evaluated for Impairment	39,940			37,581
Loans	2,771,307			2,696,210
Individually Evaluated for Impairment	44,868			20,843
Collectively Evaluated for Impairment	2,726,439			2,675,367
Real Estate Portfolio Segment[Member]
Loans	4,188,539			3,979,060
Real Estate Portfolio Segment[Member] | Construction Loans [Member]
Balance, beginning of period	2,768		3,522
Charge-offs	(454)		0
Recoveries	1		1
Provision	1,442		72
Balance, end of period	3,757		3,595
Individually Evaluated for Impairment	351			86
Collectively Evaluated for Impairment	3,406			2,682
Loans	548,578			521,392
Individually Evaluated for Impairment	1,834			4,320
Collectively Evaluated for Impairment	546,744			517,072
Real Estate Portfolio Segment[Member] | Real Estate Loan [Member]
Balance, beginning of period	29,653		25,508
Charge-offs	(1,678)		(50)
Recoveries	1		7
Provision	4,384		1,246
Balance, end of period	32,360		26,711
Individually Evaluated for Impairment	931			3,633
Collectively Evaluated for Impairment	31,429			26,020
Loans	4,188,539			3,979,060
Individually Evaluated for Impairment	13,815			17,985
Collectively Evaluated for Impairment	4,174,724			3,961,075
Consumer Portfolio Segment [Member]
Balance, beginning of period	497		554
Charge-offs	(58)		(218)
Recoveries	12		7
Provision	66		99
Balance, end of period	517		$ 442
Individually Evaluated for Impairment	0			0
Collectively Evaluated for Impairment	517			497
Loans	60,412			64,789
Individually Evaluated for Impairment	9			0
Collectively Evaluated for Impairment	$ 60,403			$ 64,789
[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	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Recorded investment, with no allowance	$ 17,012	$ 19,183
Unpaid principal balance, with no allowance	17,112	20,831
Average recorded investment, with no allowance	17,161	21,184
Interest income recognized in period, with no allowance	228	1,308
Recorded investment, with an allowance	43,514	23,965
Unpaid principal balance, with an allowance	48,659	34,584
Related allowance	10,122	9,804
Average recorded investment, with an allowance	49,776	37,580
Interest income recognized in period, with an allowance	250	745
Recorded investment	60,526	43,148
Unpaid principal balance	65,771	55,415
Average recorded investment	66,937	58,764
Interest income recognized in period	478	2,053
Commercial Real Estate Portfolio Segment [Member]
Recorded investment, with no allowance	12,360	9,015
Unpaid principal balance, with no allowance	12,360	10,563
Average recorded investment, with no allowance	12,352	11,284
Interest income recognized in period, with no allowance	176	562
Recorded investment, with an allowance	32,508	11,828
Unpaid principal balance, with an allowance	32,775	19,307
Related allowance	8,840	6,085
Average recorded investment, with an allowance	33,186	19,714
Interest income recognized in period, with an allowance	239	395
Recorded investment	44,868	20,843
Unpaid principal balance	45,135	29,870
Average recorded investment	45,538	30,998
Interest income recognized in period	415	957
Real Estate Portfolio Segment[Member]
Recorded investment, with no allowance	4,613	7,437
Unpaid principal balance, with no allowance	4,709	7,533
Average recorded investment, with no allowance	4,765	7,837
Interest income recognized in period, with no allowance	52	620
Recorded investment, with an allowance	9,202	10,548
Unpaid principal balance, with an allowance	14,002	13,688
Related allowance	931	3,633
Average recorded investment, with an allowance	13,841	16,252
Interest income recognized in period, with an allowance	11	323
Recorded investment	13,815	17,985
Unpaid principal balance	18,711	21,221
Average recorded investment	18,606	24,089
Interest income recognized in period	63	943
Real Estate Portfolio Segment[Member] | Construction Loans [Member]
Recorded investment, with no allowance	30	2,731
Unpaid principal balance, with no allowance	34	2,735
Average recorded investment, with no allowance	35	2,063
Interest income recognized in period, with no allowance	0	126
Recorded investment, with an allowance	1,804	1,589
Unpaid principal balance, with an allowance	1,882	1,589
Related allowance	351	86
Average recorded investment, with an allowance	2,749	1,614
Interest income recognized in period, with an allowance	0	27
Recorded investment	1,834	4,320
Unpaid principal balance	1,916	4,324
Average recorded investment	2,784	3,677
Interest income recognized in period	0	153
Real Estate Portfolio Segment[Member] | Owner Occupied Commercial [Member]
Recorded investment, with no allowance	2,195	7,150
Unpaid principal balance, with no allowance	2,291	7,246
Average recorded investment, with no allowance	2,299	7,548
Interest income recognized in period, with no allowance	33	618
Recorded investment, with an allowance	7,487	7,888
Unpaid principal balance, with an allowance	12,127	11,028
Related allowance	827	2,456
Average recorded investment, with an allowance	12,159	13,627
Interest income recognized in period, with an allowance	5	301
Recorded investment	9,682	15,038
Unpaid principal balance	14,418	18,274
Average recorded investment	14,458	21,175
Interest income recognized in period	38	919
Real Estate Portfolio Segment[Member] | One to Four Family [Member]
Recorded investment, with no allowance	717	287
Unpaid principal balance, with no allowance	717	287
Average recorded investment, with no allowance	735	289
Interest income recognized in period, with no allowance	1	2
Recorded investment, with an allowance	1,662	1,153
Unpaid principal balance, with an allowance	1,822	1,153
Related allowance	104	176
Average recorded investment, with an allowance	1,526	1,157
Interest income recognized in period, with an allowance	4	1
Recorded investment	2,379	1,440
Unpaid principal balance	2,539	1,440
Average recorded investment	2,261	1,446
Interest income recognized in period	5	3
Real Estate Portfolio Segment[Member] | Other Mortgages [Member]
Recorded investment, with no allowance	1,701	1,507
Unpaid principal balance, with no allowance	1,701	1,507
Average recorded investment, with no allowance	1,731	1,468
Interest income recognized in period, with no allowance	18	21
Recorded investment, with an allowance	53	1,507
Unpaid principal balance, with an allowance	53	1,507
Related allowance	0	1,001
Average recorded investment, with an allowance	156	1,468
Interest income recognized in period, with an allowance	2	21
Recorded investment	1,754
Unpaid principal balance	1,754
Average recorded investment	1,887
Interest income recognized in period	20
Consumer Portfolio Segment [Member]
Recorded investment, with no allowance	9	0
Unpaid principal balance, with no allowance	9	0
Average recorded investment, with no allowance	9	0
Interest income recognized in period, with no allowance	0	0
Recorded investment, with an allowance	0	0
Unpaid principal balance, with an allowance	0	0
Related allowance	0	0
Average recorded investment, with an allowance	0	0
Interest income recognized in period, with an allowance	0	$ 0
Recorded investment	9
Unpaid principal balance	9
Average recorded investment	9
Interest income recognized in period	$ 0

Note 5 - Loans - Troubled Debt

Note 5 - Loans - Troubled Debt Restructurings (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020USD ($)
Number of Contracts	1
Post- Modification Outstanding Recorded Investment	$ 350
Pre- Modification Outstanding Recorded Investment	$ 350
Commercial Real Estate Portfolio Segment [Member]
Number of Contracts	1
Post- Modification Outstanding Recorded Investment	$ 350
Pre- Modification Outstanding Recorded Investment	$ 350
Real Estate Portfolio Segment[Member]
Number of Contracts	0
Post- Modification Outstanding Recorded Investment	$ 0
Pre- Modification Outstanding Recorded Investment	$ 0
Real Estate Portfolio Segment[Member] | Construction Loans [Member]
Number of Contracts	0
Post- Modification Outstanding Recorded Investment	$ 0
Pre- Modification Outstanding Recorded Investment	$ 0
Real Estate Portfolio Segment[Member] | Owner Occupied Commercial [Member]
Number of Contracts	0
Post- Modification Outstanding Recorded Investment	$ 0
Pre- Modification Outstanding Recorded Investment	$ 0
Real Estate Portfolio Segment[Member] | One to Four Family [Member]
Number of Contracts	0
Post- Modification Outstanding Recorded Investment	$ 0
Pre- Modification Outstanding Recorded Investment	$ 0
Real Estate Portfolio Segment[Member] | Other Mortgages [Member]
Number of Contracts	0
Post- Modification Outstanding Recorded Investment	$ 0
Pre- Modification Outstanding Recorded Investment	$ 0
Consumer Portfolio Segment [Member]
Number of Contracts	0
Post- Modification Outstanding Recorded Investment	$ 0
Pre- Modification Outstanding Recorded Investment	$ 0

Note 6 - Leases (Details Textua

Note 6 - Leases (Details Textual) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Lessee, Operating Lease, Remaining Lease Term (Year)	9 years
Operating Lease, Right-of-Use Asset	$ 12,500,000		$ 12,300,000
Operating Lease, Liability, Total	$ 12,594,000		$ 13,400,000
Operating Lease, Weighted Average Remaining Lease Term (Year)	5 years 3 months 18 days
Operating Lease, Weighted Average Discount Rate, Percent	3.19%
Operating Lease, Payments	$ 852,000	$ 781,000

Note 6 - Leases - Maturities of

Note 6 - Leases - Maturities of Operating Lease Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
2020 (remaining)	$ 2,544
2021	2,688
2022	2,655
2023	2,181
2024	1,180
thereafter	2,570
Total lease payments	13,818
Less: imputed interest	(1,224)
Present value of operating lease liabilities	$ 12,594	$ 13,400

Note 6 - Leases - Lease Costs (

Note 6 - Leases - Lease Costs (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Operating lease cost	$ 873	$ 840
Short-term lease cost	16	9
Variable lease cost	44	38
Sublease income	(16)	(6)
Net lease cost	$ 917	$ 881

Note 7 - Employee and Directo_3

Note 7 - Employee and Director Benefits (Details Textual) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2014
Share-based Payment Arrangement, Expense	$ 276,000	$ 282,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)	$ 12.20
Share-based Payment Arrangement, Option [Member]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total	$ 1,100,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)	1 year 8 months 12 days
Restricted Stock [Member]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total	$ 1,800,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)	3 years
The 2009 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)			5,550,000
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)			10 years

Note 7 - Employee and Directo_4

Note 7 - Employee and Director Benefits - Assumptions Used to Estimate Fair Value of Stock Option Awards (Details) - Share-based Payment Arrangement, Option [Member]	3 Months Ended
	Mar. 31, 2020
Expected volatility	40.00%
Expected dividends	1.76%
Expected term (Year)	6 years 3 months 18 days
Risk-free rate	2.61%

Note 7 - Employee and Directo_5

Note 7 - Employee and Director Benefits - Summary of Stock Option Activity (Details) - Share-based Payment Arrangement, Option [Member] - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019	Dec. 31, 2018
Outstanding, shares (in shares)	965,248	1,238,748	1,238,748
Outstanding, weighted average exercise price (in dollars per share)	$ 15.19	$ 13.02	$ 13.02
Outstanding, weighted average remaining contractual term (Year)	5 years 4 months 24 days	6 years 3 months 18 days	4 years 10 months 24 days	5 years 2 months 12 days
Outstanding, aggregate intrinsic value	$ 12,969	$ 21,318	$ 21,911	$ 23,355
Granted (in shares)	0	6,000
Granted, weighted average exercise price (in dollars per share)	$ 0	$ 34.09
Granted, aggregate intrinsic value	$ 0	$ (2)
Exercised (in shares)	(216,000)	(162,500)
Exercised, weighted average exercise price (in dollars per share)	$ 10.47	$ 4.59
Exercised, weighted average remaining contractual term (Year)	3 years 3 months 18 days	1 year 8 months 12 days
Exercised, aggregate intrinsic value	$ 4,072	$ 4,384
Forfeited (in shares)	(18,000)	0
Forfeited, weighted average exercise price (in dollars per share)	$ 30.79	$ 0
Forfeited, weighted average remaining contractual term (Year)	6 years 10 months 24 days
Forfeited, aggregate intrinsic value	$ 26	$ 0
Exercisable, shares (in shares)	210,500	354,800
Exercisable, weighted average exercise price (in dollars per share)	$ 16.54	$ 8.40
Exercisable, weighted average remaining contractual term (Year)	5 years	4 years
Exercisable, aggregate intrinsic value	$ 7,146	$ 9,356
Granted, weighted average remaining contractual term (Year)		9 years 9 months 18 days
Outstanding, shares (in shares)	731,248	1,082,248	965,248	1,238,748
Outstanding, weighted average exercise price (in dollars per share)	$ 17.68	$ 14.41	$ 15.19	$ 13.02

Note 7 - Employee and Directo_6

Note 7 - Employee and Director Benefits - Summary of Restricted Stock Activity (Details) - Restricted Stock [Member] - $ / shares	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Non-vested, shares (in shares)	71,290	44,076
Non-vested, weighted average grant date fair value (in dollars per share)	$ 31.53	$ 28.94
Granted, shares (in shares)	15,300	2,700
Granted, weighted average grant date fair value (in dollars per share)	$ 39.45	$ 34.09
Vested, shares (in shares)	(8,376)	(5,200)
Vested, weighted average grant date fair value (in dollars per share)	$ 18.64	$ 20.31
Forfeited, shares (in shares)	0	0
Forfeited, weighted average grant date fair value (in dollars per share)	$ 0	$ 0
Non-vested, shares (in shares)	78,214	41,576
Non-vested, weighted average grant date fair value (in dollars per share)	$ 34.46	$ 30.35

Note 10 - Recent Accounting P_2

Note 10 - Recent Accounting Pronouncements (Details Textual)	3 Months Ended
	Mar. 31, 2020
Increase in Allowance for Loan Losses, Percent	10.00%

Note 11 - Fair Value Measurem_3

Note 11 - Fair Value Measurement (Details Textual)	3 Months Ended		12 Months Ended
	Mar. 31, 2020USD ($)	Mar. 31, 2019USD ($)	Dec. 31, 2019USD ($)
Debt Securities, Available-for-sale, Total	$ 826,782,000		$ 759,399,000	[1]
Asset Impairment Charges, Total	5,000,000	$ 1,900,000
Real Estate Owned, Amount of Loss at Acquisition	563,000	$ 22,000
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Foreclosure	287,000		103,000
Mortgage Loans in Process of Foreclosure, Amount	600,000		287,000
Liabilities, Total	8,482,997,000		8,104,971,000	[1]
Fair Value, Recurring [Member]
Debt Securities, Available-for-sale, Total	826,782,000		759,399,000
Liabilities, Total	0		0
Fair Value, Nonrecurring [Member]
Liabilities, Total	$ 0		$ 0
Minimum [Member]
Impaired Loans, Fair Value Adjustment, Percent	0.00%		0.00%
Real Estate Owned, Fair Value Adjustment, Percent	5.00%		5.00%
Weighted Average [Member]
Impaired Loans, Fair Value Adjustment, Percent	16.60%		5.60%
Real Estate Owned, Fair Value Adjustment, Percent	7.80%		8.00%
Maximum [Member]
Impaired Loans, Fair Value Adjustment, Percent	50.00%		30.00%
Real Estate Owned, Fair Value Adjustment, Percent	10.00%		10.00%
Corporate Debt Securities [Member]
Number of Available-for-sale Debt Securities Acquired	2
Debt Securities, Available-for-sale, Total	$ 160,648,000		$ 160,477,000
Corporate Debt Securities [Member] | Fair Value, Recurring [Member]
Debt Securities, Available-for-sale, Total	160,648,000		160,477,000
Corporate Debt Securities [Member] | Minimum [Member]
Debt Securities, Available-for-sale, Total	94,574,400		98,783,600
Corporate Debt Securities [Member] | Weighted Average [Member]
Debt Securities, Available-for-sale, Total	106,777,500		112,230,500
Corporate Debt Securities [Member] | Maximum [Member]
Debt Securities, Available-for-sale, Total	$ 102,386,500		$ 102,264,800
[1]	derived from audited financial statements.

Note 11 - Fair Value Measurem_4

Note 11 - Fair Value Measurement - Financial Assets and Financial Liabilities Carried at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Debt Securities, Available-for-sale, Total	$ 826,782	$ 759,399	[1]
US Treasury Securities [Member]
Debt Securities, Available-for-sale, Total	49,782	49,210
US Government Agencies Debt Securities [Member]
Debt Securities, Available-for-sale, Total	18,593	18,386
Collateralized Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale, Total	546,431	474,054
US States and Political Subdivisions Debt Securities [Member]
Debt Securities, Available-for-sale, Total	51,328	57,272
Corporate Debt Securities [Member]
Debt Securities, Available-for-sale, Total	160,648	160,477
Fair Value, Recurring [Member]
Debt Securities, Available-for-sale, Total	826,782	759,399
Fair Value, Recurring [Member] | US Treasury Securities [Member]
Debt Securities, Available-for-sale, Total	49,782	49,210
Fair Value, Recurring [Member] | US Government Agencies Debt Securities [Member]
Debt Securities, Available-for-sale, Total	18,593	18,386
Fair Value, Recurring [Member] | Collateralized Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale, Total	546,431	474,054
Fair Value, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member]
Debt Securities, Available-for-sale, Total	51,328	57,272
Fair Value, Recurring [Member] | Corporate Debt Securities [Member]
Debt Securities, Available-for-sale, Total	160,648	160,477
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member]
Debt Securities, Available-for-sale, Total	0	0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | US Treasury Securities [Member]
Debt Securities, Available-for-sale, Total	0	0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | US Government Agencies Debt Securities [Member]
Debt Securities, Available-for-sale, Total	0	0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Collateralized Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale, Total	0	0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member]
Debt Securities, Available-for-sale, Total	0	0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Corporate Debt Securities [Member]
Debt Securities, Available-for-sale, Total	0	0
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member]
Debt Securities, Available-for-sale, Total	820,135	752,803
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | US Treasury Securities [Member]
Debt Securities, Available-for-sale, Total	49,782	49,210
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | US Government Agencies Debt Securities [Member]
Debt Securities, Available-for-sale, Total	18,593	18,386
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Collateralized Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale, Total	546,431	474,054
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member]
Debt Securities, Available-for-sale, Total	51,328	57,272
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Corporate Debt Securities [Member]
Debt Securities, Available-for-sale, Total	154,001	153,881
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member]
Debt Securities, Available-for-sale, Total	6,647	6,596
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | US Treasury Securities [Member]
Debt Securities, Available-for-sale, Total	0	0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | US Government Agencies Debt Securities [Member]
Debt Securities, Available-for-sale, Total	0	0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Collateralized Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale, Total	0	0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member]
Debt Securities, Available-for-sale, Total	0	0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Corporate Debt Securities [Member]
Debt Securities, Available-for-sale, Total	$ 6,647	$ 6,596
[1]	derived from audited financial statements.

Note 11 - Fair Value Measurem_5

Note 11 - Fair Value Measurement - Carrying Amount and Estimated Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Impaired loans	$ 50,404	$ 33,344
Other real estate owned and repossessed assets	7,448	8,178
Total assets at fair value	57,852	41,522
Fair Value, Inputs, Level 1 [Member]
Impaired loans	0	0
Other real estate owned and repossessed assets	0	0
Total assets at fair value	0	0
Fair Value, Inputs, Level 2 [Member]
Impaired loans	0	0
Other real estate owned and repossessed assets	0	0
Total assets at fair value	0	0
Fair Value, Inputs, Level 3 [Member]
Impaired loans	50,404	33,344
Other real estate owned and repossessed assets	7,448	8,178
Total assets at fair value	$ 57,852	$ 41,522

Note 11 - Fair Value Measurem_6

Note 11 - Fair Value Measurement - Financial Assets and Liabilities Carried at Fair Value on Recurring Basis or Nonrecurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Cash and cash equivalents	$ 80,461	$ 78,618	[1]
Federal funds sold	306,127	100,473	[1]
Mortgage loans held for sale	6,747	6,312	[1]
Held to maturity debt securities	250	250
Net Loans	7,483,422	7,184,867	[1]
Federal funds purchased	543,623	470,749	[1]
Reported Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member]
Cash and cash equivalents	378,404	530,127
Reported Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Federal funds sold	306,127	100,473
Mortgage loans held for sale	6,747	6,302
Deposits	7,832,655	7,530,433
Federal funds purchased	543,623	470,749
Other borrowings	64,707	64,703
Reported Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member]
Held to maturity debt securities	250	250
Net Loans	7,433,018	7,151,523
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member]
Cash and cash equivalents	378,404	530,127
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Federal funds sold	306,127	100,473
Mortgage loans held for sale	6,775	6,312
Deposits	7,817,647	7,534,984
Federal funds purchased	543,623	470,749
Other borrowings	64,950	65,048
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member]
Held to maturity debt securities	250	250
Net Loans	$ 7,401,907	$ 7,099,198
[1]	derived from audited financial statements.

Note 12 - Subsequent Events (De

Note 12 - Subsequent Events (Details Textual) - Subsequent Event [Member] $ in Millions	Apr. 17, 2020USD ($)
Number of Loans Funded, Payroll Protection Plan	3,525
Amount of Loans Funded, Payment Protection Plan	$ 920.3