Goodwill and Intangible Assets - Schedule of Reconciliation of Purchase Price Paid for Acquisition and Goodwill Recorded (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021	Feb. 22, 2021
Less purchase accounting adjustments:
Goodwill	$ 140,465	$ 111,853
Delta Bancshares Company
Goodwill [Line Items]
Unallocated purchase price	29,791
Less purchase accounting adjustments:
Fair value of securities	(2,836)
Fair value of loans, net	(3,399)
Fair value of premises and equipment	3,508
Fair value of time deposits	(1,759)
Fair value of FHLB advances	(75)
Core deposit intangible	5,920
Other assets	(623)
Other liabilities	444
Goodwill, purchase accounting adjustments	1,180
Goodwill	28,611
LINCO Bancshares, Inc.
Goodwill [Line Items]
Unallocated purchase price	12,248
Less purchase accounting adjustments:
Fair value of securities	264
Fair value of loans, net	(2,818)
Fair value of other real estate owned	915
Fair value of premises and equipment	6,360
Fair value of time deposits	(2,081)
Fair value of FHLB advances	(975)
Core deposit intangible	2,025
Other assets	3,293
Other liabilities	(184)
Goodwill, purchase accounting adjustments	6,799
Goodwill	$ 5,449		$ 8,900	$ 5,449