Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Delta Bancshares Company	LINCO Bancshares, Inc.	Common Stock	Common Stock Delta Bancshares Company	Common Stock LINCO Bancshares, Inc.	Additional Paid-in Capital	Additional Paid-in Capital Delta Bancshares Company	Additional Paid-in Capital LINCO Bancshares, Inc.	Retained Earnings	Deferred Compensation	Accumulated Other Comprehensive Income (Loss)	Treasury Stock
Beginning balance at Dec. 31, 2020	$ 568,228			$ 71,449			$ 297,806			$ 197,726	$ 2,980	$ 17,095	$ (18,828)
Net income	4,109									4,109
Other comprehensive loss, net tax	(12,008)											(12,008)
Cash dividends on common stock	(3,427)									(3,427)
Issuance of common shares pursuant to the dividend reinvestment plan	171			17			154
Issuance of common shares pursuant to the deferred compensation plan	18			3			15
Issuance of restricted shares pursuant to 2017 stock incentive plan	943			111			832
Issuance of common shares pursuant to 2017 stock incentive plan	85			10			75
Issuance of common shares pursuant to the employee stock purchase plan	75			13			62
Issuance of common shares pursuant to the acquisition, net proceeds			$ 44,191			$ 5,049			$ 39,142
Deferred compensation											(71)		71
Tax benefit related to deferred compensation distributions	179						179
Grant of restricted units pursuant to 2017 stock incentive plan	1,216						1,216
Release of restricted units pursuant to 2017 stock incentive plan	(584)						(584)
Vested restricted shares/units compensation expense	(1,312)										(1,312)
Ending balance at Mar. 31, 2021	601,884			76,652			338,897			198,408	1,597	5,087	(18,757)
Beginning balance at Dec. 31, 2021	633,894			76,835			340,419			234,162	2,517	(831)	(19,208)
Net income	16,616									16,616
Other comprehensive loss, net tax	(73,197)											(73,197)
Cash dividends on common stock	(3,973)									(3,973)
Issuance of common shares pursuant to the deferred compensation plan	83			8			75
Issuance of restricted shares pursuant to 2017 stock incentive plan	2,259			219			2,040
Issuance of common shares pursuant to 2017 stock incentive plan	199			20			179
Issuance of common shares pursuant to the employee stock purchase plan	124			13			111
Issuance of common shares pursuant to the acquisition, net proceeds		$ 92,172			$ 9,169			$ 83,003
Issuance costs pursuant to acquisition of Delta Bancshares Company	(31)						(31)
Purchase of shares of treasury stock	(11)												(11)
Deferred compensation	(2,571)										(2,518)		(53)
Grant of restricted units pursuant to 2017 stock incentive plan	1,529						1,529
Release of restricted units pursuant to 2017 stock incentive plan	(1,216)						(1,216)
Vested restricted shares/units compensation expense	508						39				469
Ending balance at Mar. 31, 2022	$ 666,385			$ 86,264			$ 426,148			$ 246,805	$ 468	$ (74,028)	$ (19,272)