Loans Receivable and Allowance for Loan Losses (Allowance for Loan Losses and Recorded Investment in Financing Receivables) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance,	$ 8,509	$ 8,452
Charge Offs	(150)	(598)
Recoveries	29	45
Provision for loan losses	700	450
Ending balance,	9,088	8,349
Ending balance individually evaluated for impairment	392	0
Ending balance collectively evaluated for impairment	8,696	8,349
Residential Real Estate Loans [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance,	1,552	1,328
Charge Offs	(1)	(65)
Recoveries	2	11
Provision for loan losses	91	181
Ending balance,	1,644	1,455
Ending balance individually evaluated for impairment	0	0
Ending balance collectively evaluated for impairment	1,644	1,455
Commercial Real Estate Loans [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance,	4,687	5,455
Charge Offs	(33)	(469)
Recoveries	4	10
Provision for loan losses	257	(49)
Ending balance,	4,915	4,947
Ending balance individually evaluated for impairment	392	0
Ending balance collectively evaluated for impairment	4,523	4,947
Construction Real Estate Loans [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance,	95	93
Charge Offs	0	0
Recoveries	0	0
Provision for loan losses	(8)	15
Ending balance,	87	108
Ending balance individually evaluated for impairment	0	0
Ending balance collectively evaluated for impairment	87	108
Commercial [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance,	949	712
Charge Offs	0	(1)
Recoveries	10	10
Provision for loan losses	105	90
Ending balance,	1,064	811
Ending balance individually evaluated for impairment	0	0
Ending balance collectively evaluated for impairment	1,064	811
Consumer Loans To Individuals [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance,	1,226	864
Charge Offs	(116)	(63)
Recoveries	13	14
Provision for loan losses	255	213
Ending balance,	1,378	1,028
Ending balance individually evaluated for impairment	0	0
Ending balance collectively evaluated for impairment	$ 1,378	$ 1,028