Allowance for Credit Losses - Activity in Allowance for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	$ 89,838	$ 86,643	$ 83,315	$ 92,733
Initial Allowance on PCD Loans Acquired During the Period			51
Provision for Credit Losses	822	(4,855)	7,378	(10,570)
Charge- Offs	(452)	(1,784)	(1,117)	(2,725)
Recoveries	576	1,129	1,162	1,700
TDR Allowance Adjustments	(15)	(6)	(20)	(11)
Ending Balance	90,769	81,127	90,769	81,127
Construction and land development
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	2,268	4,428	2,751	4,920
Initial Allowance on PCD Loans Acquired During the Period			0
Provision for Credit Losses	230	(469)	(263)	(979)
Charge- Offs	0	0	0	0
Recoveries	54	96	64	114
TDR Allowance Adjustments	0	(2)	0	(2)
Ending Balance	2,552	4,053	2,552	4,053
Commercial real estate - owner-occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	9,294	9,792	8,579	9,868
Initial Allowance on PCD Loans Acquired During the Period			0
Provision for Credit Losses	(1,918)	(1,116)	(1,203)	(1,192)
Charge- Offs	0	0	0	0
Recoveries	0	0	0	0
TDR Allowance Adjustments	0	0	0	0
Ending Balance	7,376	8,676	7,376	8,676
Commercial real estate - non owner-occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	43,922	36,229	36,617	38,266
Initial Allowance on PCD Loans Acquired During the Period			31
Provision for Credit Losses	2,528	(1,423)	9,802	(3,461)
Charge- Offs	0	0	0	0
Recoveries	9	1	9	2
TDR Allowance Adjustments	0	0	0	0
Ending Balance	46,459	34,807	46,459	34,807
Residential real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	14,075	14,353	12,811	17,500
Initial Allowance on PCD Loans Acquired During the Period			17
Provision for Credit Losses	648	(2,407)	1,708	(5,779)
Charge- Offs	0	(21)	(1)	(21)
Recoveries	112	621	303	850
TDR Allowance Adjustments	(14)	(3)	(17)	(7)
Ending Balance	14,821	12,543	14,821	12,543
Commercial and financial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	17,727	18,916	19,744	18,690
Initial Allowance on PCD Loans Acquired During the Period			3
Provision for Credit Losses	(500)	399	(2,128)	1,174
Charge- Offs	(253)	(1,564)	(822)	(2,320)
Recoveries	171	265	348	472
TDR Allowance Adjustments	(1)	0	(1)	0
Ending Balance	17,144	18,016	17,144	18,016
Consumer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	2,552	2,925	2,813	3,489
Initial Allowance on PCD Loans Acquired During the Period			0
Provision for Credit Losses	(166)	161	(538)	(333)
Charge- Offs	(199)	(199)	(294)	(384)
Recoveries	230	146	438	262
TDR Allowance Adjustments	0	(1)	(2)	(2)
Ending Balance	2,417	3,032	2,417	3,032
Paycheck Protection Program
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	0	0	0	0
Provision for Credit Losses	0	0	0	0
Charge- Offs	0	0	0	0
Recoveries	0	0	0	0
TDR Allowance Adjustments	0	0	0	0
Ending Balance	$ 0	$ 0	$ 0	$ 0