Tax benefit associated with an equity-based deferred compensation plan. The tax benefit results from the deduction by the entity on its tax return for an award of stock that exceeds the cumulative compensation cost for common stock or preferred stock recognized for financial reporting. Includes any resulting tax benefit that exceeds the previously recognized deferred tax asset (excess tax benefits).

No definition available.

Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($)	Total	Cumulative Effect, Period of Adoption, Adjusted Balance [Member]	Cumulative Effect, Period of Adoption, Adjustment	LINCO Bancshares, Inc.	Common Stock	Common Stock Cumulative Effect, Period of Adoption, Adjusted Balance [Member]	Common Stock LINCO Bancshares, Inc.	Additional Paid-in Capital	Additional Paid-in Capital Cumulative Effect, Period of Adoption, Adjusted Balance [Member]	Additional Paid-in Capital LINCO Bancshares, Inc.	Retained Earnings	Retained Earnings Cumulative Effect, Period of Adoption, Adjusted Balance [Member]	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment	Deferred Compensation	Deferred Compensation Cumulative Effect, Period of Adoption, Adjusted Balance [Member]	Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) Cumulative Effect, Period of Adoption, Adjusted Balance [Member]	Treasury Stock	Treasury Stock Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Beginning balance at Dec. 31, 2019	$ 526,609,000	$ 525,892,000			$ 71,152,000	$ 71,152,000		$ 295,925,000	$ 295,925,000		$ 166,667,000	$ 165,950,000		$ 2,760,000	$ 2,760,000	$ 8,360,000	$ 8,360,000	$ (18,255,000)	$ (18,255,000)
Beginning balance (ASU 2016-13) at Dec. 31, 2019			$ (717,000)										$ (717,000)
Net income	9,999,000										9,999,000
Other comprehensive income, net tax	(3,151,000)															(3,151,000)
Issuance of restricted shares pursuant to the 2017 Stock Incentive Plan	868,000				101,000			767,000
Issuance of common shares pursuant to the Employee Stock Purchase Plan	86,000				15,000			71,000
Deferred Compensation														(5,000)				5,000
Tax benefit related to deferred compensation distributions	22,000							22,000
Grant of restricted units pursuant to 2017 Stock Incentive Plan	584,000							584,000
Release of restricted units pursuant to 2017 Stock Incentive Plan	(516,000)							(516,000)
Vested restricted shares/units compensation expense	(733,000)													(733,000)
Ending balance at Mar. 31, 2020	533,051,000				71,268,000			296,853,000			175,949,000			2,022,000		5,209,000		(18,250,000)
Beginning balance at Dec. 31, 2020	568,228,000				71,449,000			297,806,000			197,726,000			2,980,000		17,095,000		(18,828,000)
Net income	4,109,000										4,109,000
Other comprehensive income, net tax	(12,008,000)															(12,008,000)
Cash dividends on common stock	(3,427,000)										(3,427,000)
Issuance of common shares pursuant to the Dividend Reinvestment Plan	171,000				17,000			154,000
Issuance of common shares pursuant to the Deferred Compensation Plan	18,000				3,000			15,000
Issuance of restricted shares pursuant to the 2017 Stock Incentive Plan	943,000				111,000			832,000
Issuance of 2,375 common shares pursuant to the 2017 Stock Incentive Plan	85,000				10,000			75,000
Issuance of 1,262,246 common shares pursuant to acquisition of LINCO Bancshares, Inc., net proceeds				$ 44,191,000			$ 5,049,000			$ 39,142,000
Issuance of common shares pursuant to the Employee Stock Purchase Plan	75,000				13,000			62,000
Deferred Compensation														(71,000)				71,000
Tax benefit related to deferred compensation distributions	179,000							179,000
Grant of restricted units pursuant to 2017 Stock Incentive Plan	1,216,000							1,216,000
Release of restricted units pursuant to 2017 Stock Incentive Plan	(584,000)							(584,000)
Vested restricted shares/units compensation expense	(1,312,000)													(1,312,000)
Ending balance at Mar. 31, 2021	$ 601,884,000				$ 76,652,000			$ 338,897,000			$ 198,408,000			$ 1,597,000		$ 5,087,000		$ (18,757,000)