Segment Reporting - Results for Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Segment Reporting Revenue Reconciling Item [Line Items]
Total interest income	$ 11,960	$ 9,381
Total interest expense	2,526	672
Net interest income	9,434	8,709
Provision	269	721
Net interest income after provision for credit losses	9,165	7,988
Total non-interest income	829	829
Total non-interest expense	7,270	7,056
Income before income taxes	2,724	1,761
Provision for income taxes	652	400
Net income	2,072	1,361
Total assets	1,026,658	968,646	$ 994,667
Total investment securities	128,689	137,736
Total loans, net	764,290	669,846	764,451
Goodwill and core deposit intangible, net	7,746	7,996	7,801
Fixed asset additions	139	118
Depreciation and amortization expense	412	387
Total interest income from external customers	11,960	9,381
Intersegment Eliminations [Member]
Segment Reporting Revenue Reconciling Item [Line Items]
Total interest income	(206)	(334)
Total interest expense	(206)	(334)
Total non-interest income	(2,416)	(1,744)
Total non-interest expense	(19)	(69)
Income before income taxes	(2,397)	(1,675)
Net income	(2,397)	(1,675)
Total assets	(110,171)	(141,604)
Total loans, net	(14,939)	(31,960)
Investment in subsidiaries	(92,210)	(93,963)
Total interest income from affiliates	(206)	(334)
FUSB [Member]
Segment Reporting Revenue Reconciling Item [Line Items]
Total loans, net	749,408		745,641
FUSB [Member] | Operating Segments [Member]
Segment Reporting Revenue Reconciling Item [Line Items]
Total interest income	11,506	8,125
Total interest expense	2,412	559
Net interest income	9,094	7,566
Provision	269	(135)
Net interest income after provision for credit losses	8,825	7,701
Total non-interest income	831	855
Total non-interest expense	6,671	6,285
Income before income taxes	2,985	2,271
Provision for income taxes	701	502
Net income	2,284	1,769
Total assets	1,025,683	972,318
Total investment securities	128,689	137,655
Total loans, net	764,347	669,569
Goodwill and core deposit intangible, net	7,746	7,996
Fixed asset additions	139	118
Depreciation and amortization expense	405	377
Total interest income from external customers	11,301	7,792
Total interest income from affiliates	205	333
ALC [Member]
Segment Reporting Revenue Reconciling Item [Line Items]
Total loans, net	14,882		$ 18,810
ALC [Member] | Operating Segments [Member]
Segment Reporting Revenue Reconciling Item [Line Items]
Total interest income	659	1,589
Total interest expense	205	333
Net interest income	454	1,256
Provision		856
Net interest income after provision for credit losses	454	400
Total non-interest income	17	70
Total non-interest expense	320	544
Income before income taxes	151	(74)
Provision for income taxes	38	(19)
Net income	113	(55)
Total assets	16,128	33,518
Total loans, net	14,882	32,237
Fixed asset additions		0
Depreciation and amortization expense	7	10
Total interest income from external customers	659	1,589
Other Segments [Member] | Operating Segments [Member]
Segment Reporting Revenue Reconciling Item [Line Items]
Total interest income	1	1
Total interest expense	115	114
Net interest income	(114)	(113)
Net interest income after provision for credit losses	(114)	(113)
Total non-interest income	2,397	1,648
Total non-interest expense	298	296
Income before income taxes	1,985	1,239
Provision for income taxes	(87)	(83)
Net income	2,072	1,322
Total assets	95,018	104,414
Total investment securities		81
Investment in subsidiaries	92,210	93,963
Total interest income from affiliates	$ 1	$ 1