Loans Receivable - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest income recognized on a cash basis for impaired loans	$ 76,000	$ 92,000
Loans	905,675,000		$ 883,757,000
Troubled debt restructuring, debtor, subsequent periods, contingent payments, amount	0
90 Days or More Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 0		$ 0