Loans and Allowance for Credit Losses - Schedule of Financing Receivable, Allowance for Credit Loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Allowance for credit losses on loans
Balance at beginning of year	$ 154,279	$ 154,809
Provision for credit losses on loans	9,456	14,676
Loans charged off	(21,196)	(24,865)
Recoveries on loans previously charged off	7,135	9,659
Balance at end of year	149,674	154,279
Liability for unfunded commitments
Balance at beginning of year	484	568
Provision for credit losses on unfunded lending commitments	(135)	(84)
Balance at end of year	349	484
Allowance for credit losses on loans and liability for unfunded lending commitments	150,023	154,763
Construction and development
Allowance for credit losses on loans
Balance at beginning of year	14,119	17,571
Provision for credit losses on loans	855	(2,593)
Loans charged off	(14)	(950)
Recoveries on loans previously charged off	23	91
Balance at end of year	14,983	14,119
Liability for unfunded commitments
Balance at beginning of year	165	139
Provision for credit losses on unfunded lending commitments	(61)	26
Balance at end of year	104	165
Allowance for credit losses on loans and liability for unfunded lending commitments	15,087	14,284
Commercial, financial & agricultural
Allowance for credit losses on loans
Balance at beginning of year	23,915	21,180
Provision for credit losses on loans	3,396	6,043
Loans charged off	(4,749)	(6,900)
Recoveries on loans previously charged off	912	3,592
Balance at end of year	23,474	23,915
Liability for unfunded commitments
Balance at beginning of year	161	206
Provision for credit losses on unfunded lending commitments	(45)	(45)
Balance at end of year	116	161
Allowance for credit losses on loans and liability for unfunded lending commitments	23,590	24,076
Commercial real estate | Non-owner-occupied commercial real estate
Allowance for credit losses on loans
Balance at beginning of year	24,815	23,464
Provision for credit losses on loans	235	3,156
Loans charged off	(816)	(1,821)
Recoveries on loans previously charged off	403	16
Balance at end of year	24,637	24,815
Liability for unfunded commitments
Balance at beginning of year	6	14
Provision for credit losses on unfunded lending commitments	2	(8)
Balance at end of year	8	6
Allowance for credit losses on loans and liability for unfunded lending commitments	24,645	24,821
Commercial real estate | Owner-occupied commercial real estate
Allowance for credit losses on loans
Balance at beginning of year	9,940	9,626
Provision for credit losses on loans	701	(201)
Loans charged off	(384)	(5)
Recoveries on loans previously charged off	3	520
Balance at end of year	10,260	9,940
Liability for unfunded commitments
Balance at beginning of year	10	8
Provision for credit losses on unfunded lending commitments	(3)	2
Balance at end of year	7	10
Allowance for credit losses on loans and liability for unfunded lending commitments	10,267	9,950
Residential real estate | Residential real estate
Allowance for credit losses on loans
Balance at beginning of year	43,471	39,214
Provision for credit losses on loans	5,439	4,274
Loans charged off	(731)	(355)
Recoveries on loans previously charged off	162	338
Balance at end of year	48,341	43,471
Liability for unfunded commitments
Balance at beginning of year	7	13
Provision for credit losses on unfunded lending commitments	2	(6)
Balance at end of year	9	7
Allowance for credit losses on loans and liability for unfunded lending commitments	48,350	43,478
Residential real estate | Home equity lines of credit
Allowance for credit losses on loans
Balance at beginning of year	4,505	4,885
Provision for credit losses on loans	1,097	(388)
Loans charged off	(64)	(11)
Recoveries on loans previously charged off	4	19
Balance at end of year	5,542	4,505
Liability for unfunded commitments
Balance at beginning of year	135	188
Provision for credit losses on unfunded lending commitments	(30)	(53)
Balance at end of year	105	135
Allowance for credit losses on loans and liability for unfunded lending commitments	5,647	4,640
Consumer | Home equity lines of credit
Allowance for credit losses on loans
Loans charged off		(11)
Consumer | Consumer credit card
Allowance for credit losses on loans
Balance at beginning of year	8,299	8,071
Provision for credit losses on loans	2,964	3,437
Loans charged off	(3,452)	(3,894)
Recoveries on loans previously charged off	995	685
Balance at end of year	8,806	8,299
Liability for unfunded commitments
Balance at beginning of year	0	0
Provision for credit losses on unfunded lending commitments	0	0
Balance at end of year	0	0
Allowance for credit losses on loans and liability for unfunded lending commitments	8,806	8,299
Consumer | Other consumer loans
Allowance for credit losses on loans
Balance at beginning of year	25,215	30,798
Provision for credit losses on loans	(5,231)	948
Loans charged off	(10,986)	(10,929)
Recoveries on loans previously charged off	4,633	4,398
Balance at end of year	13,631	25,215
Liability for unfunded commitments
Balance at beginning of year	0	0
Provision for credit losses on unfunded lending commitments	0	0
Balance at end of year	0	0
Allowance for credit losses on loans and liability for unfunded lending commitments	$ 13,631	$ 25,215