Goodwill and Intangible Assets - Schedule of Reconciliation of Purchase Price Paid for Acquisition and Goodwill Recorded (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Feb. 22, 2021	Dec. 31, 2020
Less purchase accounting adjustments:
Goodwill	$ 112,773			$ 104,992
BBM & Associates, Inc.
Goodwill [Line Items]
Unallocated purchase price	3,661
Less purchase accounting adjustments:
Insurance company intangibles	2,249
Goodwill	1,412
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	2,373
Other liabilities	(184)
Goodwill, purchase accounting adjustments	5,879
Goodwill	$ 6,369	$ 8,900	$ 6,370