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Loans Receivable and Allowance for Loan Losses (Allowance for Loan Losses and Recorded Investment in Financing Receivables) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance,	$ 8,228	$ 8,326	$ 8,452	$ 7,634
Charge Offs	(146)	(433)	(1,205)	(764)
Recoveries	23	12	108	60
Provision for loan losses	300	375	1,050	1,350
Ending balance,	8,405	8,280	8,405	8,280
Ending balance individually evaluated for impairment	0		0
Ending balance collectively evaluated for impairment	8,405	8,280	8,405	8,280
Residential Real Estate Loans [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance,	1,447	1,455	1,328	1,272
Charge Offs	(15)	(10)	(90)	(85)
Recoveries	5		20	2
Provision for loan losses	131	(71)	310	185
Ending balance,	1,568	1,374	1,568	1,374
Ending balance individually evaluated for impairment	0		0
Ending balance collectively evaluated for impairment	1,568	1,374	1,568	1,374
Commercial Real Estate Loans [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance,	4,694	5,247	5,455	5,265
Charge Offs		(110)	(615)	(244)
Recoveries	4	2	18	33
Provision for loan losses	(132)	120	(292)	205
Ending balance,	4,566	5,259	4,566	5,259
Ending balance individually evaluated for impairment	0		0
Ending balance collectively evaluated for impairment	4,566	5,259	4,566	5,259
Construction Real Estate Loans [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance,	112	128	93	90
Charge Offs	0	0	0	0
Recoveries	0	0	0	0
Provision for loan losses	(5)	(34)	14	4
Ending balance,	107	94	107	94
Ending balance individually evaluated for impairment	0	0	0	0
Ending balance collectively evaluated for impairment	107	94	107	94
Commercial [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance,	896	690	712	463
Charge Offs	(20)	(241)	(254)	(246)
Recoveries	10	0	31	0
Provision for loan losses	57	265	454	497
Ending balance,	943	714	943	714
Ending balance individually evaluated for impairment	0	0	0	0
Ending balance collectively evaluated for impairment	943	714	943	714
Consumer Loans To Individuals [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance,	1,079	806	864	544
Charge Offs	(111)	(72)	(246)	(189)
Recoveries	4	10	39	25
Provision for loan losses	249	95	564	459
Ending balance,	1,221	839	1,221	839
Ending balance individually evaluated for impairment	0		0
Ending balance collectively evaluated for impairment	$ 1,221	$ 839	$ 1,221	$ 839

X

- Definition

Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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