COVID-19 and CARES Act Loan Activities (Details) - COVID-19 [Member] $ in Millions	9 Months Ended
	Sep. 30, 2021 USD ($) Loan
Outstanding [Member]
COVID-19 [Abstract]
Number of loan deferrals | Loan	27
Amount of loan deferrals | $	$ 15.8
Period of loan deferrals	90 days
Paycheck Protection Program [Member]
COVID-19 [Abstract]
Number of loans closed | Loan	6,312
Amount of loans closed | $	$ 401.3
Number of loans forgiven by SBA | Loan	4,730
Amount of loans forgiven by SBA | $	$ 297.7
Consolidated Appropriations Act 2021 (Second Round) [Member]
COVID-19 [Abstract]
Number of loans closed | Loan	3,352
Amount of loans closed | $	$ 124.3
Number of loans forgiven by SBA | Loan	1,877
Amount of loans forgiven by SBA | $	$ 35.9
Commercial Loan [Member]
COVID-19 [Abstract]
Number of loan deferrals | Loan	6
Amount of loan deferrals | $	$ 14.3
Residential Loan [Member]
COVID-19 [Abstract]
Number of loan deferrals | Loan	17
Amount of loan deferrals | $	$ 1.4
Consumer Loan [Member]
COVID-19 [Abstract]
Number of loan deferrals | Loan	4
Amount of loan deferrals | $	$ 0.1