Loans and Credit Quality - Past Due Loans And Nonaccrual Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Past Due [Line Items]
Past due loans	$ 1,337	$ 1,534
Nonaccrual loans	11,120	15,356
Current loans	1,443,328	1,031,566
Total loans, gross	1,455,785	1,048,456
Less: Unearned origination fees,  net of origination costs	(11,735)	(5,085)
Total loans	1,444,050	1,043,371
30-59 Days Past Due Still Accruing
Financing Receivable, Past Due [Line Items]
Past due loans	888	1,534
Nonaccrual loans	68	1,937
60-89 Days Past Due Still Accruing
Financing Receivable, Past Due [Line Items]
Past due loans	0	0
Nonaccrual loans	229	474
Greater Than 90 Days Still Accruing
Financing Receivable, Past Due [Line Items]
Past due loans	449	0
Nonaccrual loans	7,071	6,010
Commercial
Financing Receivable, Past Due [Line Items]
Past due loans	387	270
Nonaccrual loans	5,576	9,153
Current loans	774,095	403,267
Total loans, gross	780,058	412,690
Total loans	772,468	411,327
Commercial | 30-59 Days Past Due Still Accruing
Financing Receivable, Past Due [Line Items]
Past due loans	387	270
Nonaccrual loans	48	270
Commercial | 60-89 Days Past Due Still Accruing
Financing Receivable, Past Due [Line Items]
Past due loans	0	0
Nonaccrual loans	229	385
Commercial | Greater Than 90 Days Still Accruing
Financing Receivable, Past Due [Line Items]
Past due loans	0	0
Nonaccrual loans	3,673	2,862
Real estate construction one-to-four family
Financing Receivable, Past Due [Line Items]
Past due loans	0	0
Nonaccrual loans	702	1,349
Current loans	37,765	37,469
Total loans, gross	38,467	38,818
Total loans	38,180	38,503
Real estate construction one-to-four family | 30-59 Days Past Due Still Accruing
Financing Receivable, Past Due [Line Items]
Past due loans	0	0
Nonaccrual loans	0	0
Real estate construction one-to-four family | 60-89 Days Past Due Still Accruing
Financing Receivable, Past Due [Line Items]
Past due loans	0	0
Nonaccrual loans	0	0
Real estate construction one-to-four family | Greater Than 90 Days Still Accruing
Financing Receivable, Past Due [Line Items]
Past due loans	0	0
Nonaccrual loans	702	1,349
Real estate construction other
Financing Receivable, Past Due [Line Items]
Past due loans	0	0
Nonaccrual loans	0	0
Current loans	80,315	61,808
Total loans, gross	80,315	61,808
Total loans	79,403	60,906
Real estate construction other | 30-59 Days Past Due Still Accruing
Financing Receivable, Past Due [Line Items]
Past due loans	0	0
Real estate construction other | 60-89 Days Past Due Still Accruing
Financing Receivable, Past Due [Line Items]
Past due loans	0	0
Real estate construction other | Greater Than 90 Days Still Accruing
Financing Receivable, Past Due [Line Items]
Past due loans	0	0
Real estate term owner occupied
Financing Receivable, Past Due [Line Items]
Past due loans	449	338
Nonaccrual loans	3,497	3,489
Current loans	159,651	135,064
Total loans, gross	163,597	138,891
Total loans	162,724	138,181
Real estate term owner occupied | 30-59 Days Past Due Still Accruing
Financing Receivable, Past Due [Line Items]
Past due loans	0	338
Nonaccrual loans	0	1,641
Real estate term owner occupied | 60-89 Days Past Due Still Accruing
Financing Receivable, Past Due [Line Items]
Past due loans	0	0
Nonaccrual loans	0	0
Real estate term owner occupied | Greater Than 90 Days Still Accruing
Financing Receivable, Past Due [Line Items]
Past due loans	449	0
Nonaccrual loans	1,520	623
Real estate term non-owner occupied
Financing Receivable, Past Due [Line Items]
Past due loans	0	0
Nonaccrual loans	0	0
Current loans	309,074	312,960
Total loans, gross	309,074	312,960
Total loans	307,247	311,302
Real estate term non-owner occupied | 30-59 Days Past Due Still Accruing
Financing Receivable, Past Due [Line Items]
Past due loans	0	0
Real estate term non-owner occupied | 60-89 Days Past Due Still Accruing
Financing Receivable, Past Due [Line Items]
Past due loans	0	0
Real estate term non-owner occupied | Greater Than 90 Days Still Accruing
Financing Receivable, Past Due [Line Items]
Past due loans	0	0
Real estate term other
Financing Receivable, Past Due [Line Items]
Past due loans	0	26
Nonaccrual loans	1,176	1,176
Current loans	45,444	41,304
Total loans, gross	46,620	42,506
Total loans	46,230	42,200
Real estate term other | 30-59 Days Past Due Still Accruing
Financing Receivable, Past Due [Line Items]
Past due loans	0	26
Nonaccrual loans	0	0
Real estate term other | 60-89 Days Past Due Still Accruing
Financing Receivable, Past Due [Line Items]
Past due loans	0	0
Nonaccrual loans	0	0
Real estate term other | Greater Than 90 Days Still Accruing
Financing Receivable, Past Due [Line Items]
Past due loans	0	0
Nonaccrual loans	1,176	1,176
Consumer secured by 1st deeds of trust
Financing Receivable, Past Due [Line Items]
Past due loans	483	750
Nonaccrual loans	63	68
Current loans	15,039	15,380
Total loans, gross	15,585	16,198
Total loans	15,548	16,191
Consumer secured by 1st deeds of trust | 30-59 Days Past Due Still Accruing
Financing Receivable, Past Due [Line Items]
Past due loans	483	750
Nonaccrual loans	0	0
Consumer secured by 1st deeds of trust | 60-89 Days Past Due Still Accruing
Financing Receivable, Past Due [Line Items]
Past due loans	0	0
Nonaccrual loans	0	0
Consumer secured by 1st deeds of trust | Greater Than 90 Days Still Accruing
Financing Receivable, Past Due [Line Items]
Past due loans	0	0
Nonaccrual loans	0	0
Consumer other
Financing Receivable, Past Due [Line Items]
Past due loans	18	150
Nonaccrual loans	106	121
Current loans	21,945	24,314
Total loans, gross	22,069	24,585
Total loans	22,250	24,761
Consumer other | 30-59 Days Past Due Still Accruing
Financing Receivable, Past Due [Line Items]
Past due loans	18	150
Nonaccrual loans	20	26
Consumer other | 60-89 Days Past Due Still Accruing
Financing Receivable, Past Due [Line Items]
Past due loans	0	0
Nonaccrual loans	0	89
Consumer other | Greater Than 90 Days Still Accruing
Financing Receivable, Past Due [Line Items]
Past due loans	0	0
Nonaccrual loans	$ 0	$ 0