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, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance,	$ 10,312	$ 8,228	$ 8,509	$ 8,452
Charge Offs	(523)	(146)	(767)	(1,205)
Recoveries	35	23	82	108
Provision for loan losses	1,850	300	3,850	1,050
Ending balance,	11,674	8,405	11,674	8,405
Ending balance collectively evaluated for impairment	11,674	8,405	11,674	8,405
Residential Real Estate Loans [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance,	1,652	1,447	1,552	1,328
Charge Offs	(40)	(15)	(41)	(90)
Recoveries	2	5	5	20
Provision for loan losses	64	131	162	310
Ending balance,	1,678	1,568	1,678	1,568
Ending balance collectively evaluated for impairment	1,678	1,568	1,678	1,568
Commercial Real Estate Loans [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance,	6,079	4,694	4,687	5,455
Charge Offs	(400)		(433)	(615)
Recoveries	4	4	10	18
Provision for loan losses	1,485	(132)	2,904	(292)
Ending balance,	7,168	4,566	7,168	4,566
Ending balance collectively evaluated for impairment	7,168	4,566	7,168	4,566
Construction Real Estate Loans [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance,	86	112	95	93
Provision for loan losses	39	(5)	30	14
Ending balance,	125	107	125	107
Ending balance collectively evaluated for impairment	125	107	125	107
Commercial [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance,	1,076	896	949	712
Charge Offs		(20)	(18)	(254)
Recoveries	18	10	36	31
Provision for loan losses	115	57	242	454
Ending balance,	1,209	943	1,209	943
Ending balance collectively evaluated for impairment	1,209	943	1,209	943
Consumer Loans To Individuals [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance,	1,419	1,079	1,226	864
Charge Offs	(83)	(111)	(275)	(246)
Recoveries	11	4	31	39
Provision for loan losses	147	249	512	564
Ending balance,	1,494	1,221	1,494	1,221
Ending balance collectively evaluated for impairment	$ 1,494	$ 1,221	$ 1,494	$ 1,221

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

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The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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Amount of increase in allowance for credit loss on financing receivable from recovery.

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Amount of writeoff of financing receivable, charged against allowance for credit loss.

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Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value.

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