Revenue Recognition - Additional Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Disaggregation Of Revenue [Line Items]
Service charges on deposits	$ 274,000	$ 368,000
Noninterest income	2,966,000	2,296,000
Service Fees and Transaction-Based Fees Income
Disaggregation Of Revenue [Line Items]
Service charges on deposits	$ 227,000	$ 152,000
Percentage on revenue	1.40%	1.10%
Overdraft and NSF Fees Income
Disaggregation Of Revenue [Line Items]
Service charges on deposits	$ 47,000	$ 215,000
Percentage on revenue	0.30%	1.60%
Wire Transfer Fee Income
Disaggregation Of Revenue [Line Items]
Percentage on revenue	0.50%	0.60%
Noninterest income	$ 81,000	$ 63,000