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Loans by Type - Summary of ACL by Category (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Balance			$ 11,944
Charge Offs			(430)
Provision for (release of) credit losses / loan losses	$ 340	$ 0	(870)	$ 725
Ending Balance	11,532		11,532		$ 11,944
Loans Excluding Unfunded Commitments
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Balance			11,944	10,556	10,556
Charge Offs			0
Provision for (release of) credit losses / loan losses			(440)		645
Recoveries			28		20
Ending Balance	11,532		11,532		11,944
Loans Excluding Unfunded Commitments \| Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Balance				723	723
Loans Excluding Unfunded Commitments \| Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Balance				11,279	11,279
Loans Excluding Unfunded Commitments \| C&I
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Balance			4,635	4,874	4,874
Charge Offs			0
Provision for (release of) credit losses / loan losses			(289)		268
Recoveries			13		19
Ending Balance	4,359		4,359		4,635
Loans Excluding Unfunded Commitments \| C&I \| Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Balance				(526)	(526)
Loans Excluding Unfunded Commitments \| C&I \| Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Balance				4,348	4,348
Loans Excluding Unfunded Commitments \| CRE
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Balance			1,175	1,528	1,528
Charge Offs			0
Provision for (release of) credit losses / loan losses			(99)		48
Recoveries			0		0
Ending Balance	1,076		1,076		1,175
Loans Excluding Unfunded Commitments \| CRE \| Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Balance				(401)	(401)
Loans Excluding Unfunded Commitments \| CRE \| Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Balance				1,127	1,127
Loans Excluding Unfunded Commitments \| Faith-based CRE
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Balance			5,717	3,842	3,842
Charge Offs			0
Provision for (release of) credit losses / loan losses			76		238
Recoveries			15		1
Ending Balance	5,808		5,808		5,717
Loans Excluding Unfunded Commitments \| Faith-based CRE \| Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Balance				1,636	1,636
Loans Excluding Unfunded Commitments \| Faith-based CRE \| Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Balance				5,478	5,478
Loans Excluding Unfunded Commitments \| Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Balance			417	312	312
Charge Offs			0
Provision for (release of) credit losses / loan losses			(128)		91
Recoveries			0		0
Ending Balance	$ 289		$ 289		417
Loans Excluding Unfunded Commitments \| Construction \| Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Balance				14	14
Loans Excluding Unfunded Commitments \| Construction \| Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Balance				$ 326	$ 326