Business Segments - Segment Reporting (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) segment	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Business Segments
Number of principal business segments | segment	3
Interest income	$ 124,137	$ 101,354	$ 93,728
Interest expense	26,430	7,890	8,359
Net interest income	97,707	93,464	85,369
Gains on sales of loans	5,780	7,498	22,279
Other noninterest income	23,835	21,714	27,552
Net revenue	127,322	122,676	135,200
Provision for credit losses	8,275	3,172	575
Noninterest expense	89,883	82,540	96,543
Income before income taxes	29,164	36,964	38,082
Income tax expense (benefit)	5,418	7,595	8,959
Net income	23,746	29,369	29,123
Capital expenditures	1,459	3,348	4,786
Depreciation and amortization	3,879	4,356	4,741
Total assets	2,438,498	2,332,317
Operating Segments | Community Banking
Business Segments
Interest income	98,387	72,568	62,402
Interest expense	24,184	5,532	5,693
Net interest income	74,203	67,036	56,709
Other noninterest income	16,465	19,250	15,208
Net revenue	90,668	86,286	71,917
Provision for credit losses	1,625	(600)	(200)
Noninterest expense	60,813	56,718	54,981
Income before income taxes	28,230	30,168	17,136
Income tax expense (benefit)	5,302	5,794	3,051
Net income	22,928	24,374	14,085
Capital expenditures	1,301	3,265	878
Depreciation and amortization	3,402	3,720	4,113
Total assets	2,319,810	2,206,299
Operating Segments | Mortgage Banking
Business Segments
Interest income	1,695	2,036	3,845
Interest expense	612	662	1,157
Net interest income	1,083	1,374	2,688
Gains on sales of loans	5,845	7,963	22,370
Other noninterest income	4,353	4,856	9,192
Net revenue	11,281	14,193	34,250
Provision for credit losses		32	(45)
Noninterest expense	10,688	12,580	23,328
Income before income taxes	593	1,581	10,967
Income tax expense (benefit)	128	371	3,284
Net income	465	1,210	7,683
Capital expenditures	12	66	164
Depreciation and amortization	79	226	256
Total assets	22,177	24,500
Operating Segments | Consumer Finance.
Business Segments
Interest income	47,264	42,441	37,803
Interest expense	22,826	15,124	9,503
Net interest income	24,438	27,317	28,300
Other noninterest income	962	1,050	1,046
Net revenue	25,400	28,367	29,346
Provision for credit losses	6,650	3,740	820
Noninterest expense	14,816	15,284	14,881
Income before income taxes	3,934	9,343	13,645
Income tax expense (benefit)	1,055	2,512	3,685
Net income	2,879	6,831	9,960
Capital expenditures	146	17	3,744
Depreciation and amortization	398	410	372
Total assets	476,671	479,864
Operating Segments | Other
Business Segments
Interest expense	2,246	2,358	2,349
Net interest income	(2,246)	(2,358)	(2,349)
Other noninterest income	2,257	(3,230)	2,207
Net revenue	11	(5,588)	(142)
Noninterest expense	3,625	(1,982)	3,375
Income before income taxes	(3,614)	(3,606)	(3,517)
Income tax expense (benefit)	(1,066)	(973)	(1,030)
Net income	(2,548)	(2,633)	(2,487)
Total assets	35,581	43,241
Eliminations
Business Segments
Interest income	(23,209)	(15,691)	(10,322)
Interest expense	(23,438)	(15,786)	(10,343)
Net interest income	229	95	21
Gains on sales of loans	(65)	(465)	(91)
Other noninterest income	(202)	(212)	(101)
Net revenue	(38)	(582)	(171)
Noninterest expense	(59)	(60)	(22)
Income before income taxes	21	(522)	(149)
Income tax expense (benefit)	(1)	(109)	(31)
Net income	22	(413)	$ (118)
Total assets	$ (415,741)	$ (421,587)