Loans Receivable and Allowance for Loan Losses (Narrative) (Details)	6 Months Ended		12 Months Ended
	Jun. 30, 2020 USD ($) segment loan item	Jun. 30, 2019 loan	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of loan categories | item	4
Loan interest rate	6.53%		6.44%
Number of loan portfolio segments | segment	1
Number of restructured loans past maturity	1
Funds committed to be advanced in connection with impaired loans | $	$ 0
Number of loans deferred, CARES Act	35
Number of deferred loans for which repayment has resumed, CARES Act	26
Number of deferred loans with additional extensions, CARES Act	2
Initial number of deferred payments, CARES Act | item	2
Extended number of deferred payments, CARES Act | item	4
Number of deferred loans for which repayment has not resumed, CARES Act	9
Period over which repayments on modified loans will resume, CARES Act	6 months
Principal balance of loans modified, CARES Act | $	$ 50,300,000
Forbearance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of restructured loans		1