General - Additional Information (Details)	6 Months Ended
	Jun. 30, 2020 USD ($)
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Aggregate exposure in industries of total loan	$ 65,900,000
Aggregate exposure in industries of total loan, percentage	10.60%
Allowance for loan losses, increase	$ 1,200,000
Allowance for loan losses, percentage	22.40%
COVID-19 [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Increase in qualitative factors due to deteriorated economic condition	$ 860,000