Revenue Recognition - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation Of Revenue [Line Items]
Service charges on deposits	$ 251,000	$ 391,000	$ 849,000	$ 1,252,000
Noninterest income	$ 3,021,000	$ 2,732,000	7,379,000	8,912,000
Service Fees and Transaction-Based Fees Income
Disaggregation Of Revenue [Line Items]
Service charges on deposits			$ 529,000	$ 545,000
Percentage on revenue			1.30%	1.30%
Overdraft and NSF Fees Income
Disaggregation Of Revenue [Line Items]
Service charges on deposits			$ 320,000	$ 707,000
Percentage on revenue			0.80%	1.70%
Wire Transfer Fee Income
Disaggregation Of Revenue [Line Items]
Percentage on revenue			0.50%	0.60%
Noninterest income			$ 215,000	$ 243,000