Allowance for Loan Credit Losses - Credit quality indicators (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Financing receivable, credit quality indicator
Total	$ 1,842,598	$ 1,859,967
Commercial Real Estate \| Real Estate Loans
Financing receivable, credit quality indicator
Current year	78,092	67,675
Prior year	66,659	315,444
Two years prior	313,180	201,801
Three years prior	198,829	127,065
Four years prior	117,522	96,424
Prior	386,338	334,132
Revolving	1,483	3,575
Total	1,162,103	1,146,116
Construction and land development \| Real Estate Loans
Financing receivable, credit quality indicator
Current year	49,926	47,253
Prior year	46,328	56,408
Two years prior	26,319	33,827
Three years prior	4,224	9,360
Four years prior	3,971	2,137
Prior	5,856	7,046
Revolving	24,842	24,891
Total	161,466	180,922
Residential Real Estate \| Real Estate Loans
Financing receivable, credit quality indicator
Current year	21,531	83,060
Prior year	75,694	114,865
Two years prior	112,728	133,188
Three years prior	117,254	87,275
Four years prior	82,799	24,883
Prior	42,388	21,380
Revolving	21,393	17,531
Total	473,787	482,182
Commercial \| Commercial - Non-Real Estate
Financing receivable, credit quality indicator
Current year	4,967	7,564
Prior year	5,077	6,838
Two years prior	6,004	1,959
Three years prior	1,503	3,207
Four years prior	1,667	4,482
Prior	7,521	4,787
Revolving	13,128	16,367
Total	39,867	45,204
Consumer \| Consumer - Non-Real Estate
Financing receivable, credit quality indicator
Current year	772	485
Prior year	81	6
Two years prior	2	26
Prior	3	10
Revolving	19	33
Total	877	560
Pass \| Commercial Real Estate \| Real Estate Loans
Financing receivable, credit quality indicator
Current year	78,092	67,675
Prior year	66,659	302,342
Two years prior	300,478	201,801
Three years prior	188,851	125,828
Four years prior	117,522	96,424
Prior	380,300	334,132
Revolving	1,483	3,575
Total	1,133,385	1,131,777
Pass \| Construction and land development \| Real Estate Loans
Financing receivable, credit quality indicator
Current year	49,926	47,253
Prior year	46,328	56,408
Two years prior	26,319	33,827
Three years prior	4,224	9,360
Four years prior	3,971	8
Prior	4,750	7,046
Revolving	24,842	24,891
Total	160,360	178,793
Pass \| Residential Real Estate \| Real Estate Loans
Financing receivable, credit quality indicator
Current year	21,531	83,060
Prior year	75,694	114,865
Two years prior	112,728	133,188
Three years prior	117,254	87,275
Four years prior	82,799	24,883
Prior	42,388	21,380
Revolving	21,393	17,531
Total	473,787	482,182
Pass \| Commercial \| Commercial - Non-Real Estate
Financing receivable, credit quality indicator
Current year	4,967	7,564
Prior year	5,077	6,838
Two years prior	6,004	1,959
Three years prior	1,503	3,207
Four years prior	1,667	4,482
Prior	7,521	4,787
Revolving	13,128	16,367
Total	39,867	45,204
Pass \| Consumer \| Consumer - Non-Real Estate
Financing receivable, credit quality indicator
Current year	772	485
Prior year	81	6
Two years prior	2	26
Prior	3	10
Revolving	19	33
Total	877	560
Special Mention \| Commercial Real Estate \| Real Estate Loans
Financing receivable, credit quality indicator
Prior year		13,102
Two years prior	12,702
Three years prior		1,237
Prior	6,038
Total	18,740	14,339
Special Mention \| Construction and land development \| Real Estate Loans
Financing receivable, credit quality indicator
Four years prior		2,129
Prior	1,106
Total	1,106	$ 2,129
Substandard \| Commercial Real Estate \| Real Estate Loans
Financing receivable, credit quality indicator
Three years prior	9,978
Total	$ 9,978

Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease.

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