Loans (Narrative) (Details)	12 Months Ended
Dec. 31, 2018 USD ($) contract loan item	Dec. 31, 2017 USD ($) contract property loan item	Dec. 31, 2016 USD ($) contract item
Financing Receivable, Recorded Investment, Past Due [Line Items]
Allowance for loan losses, TDR	$ 16,000	$ 18,000	$ 45,000
Number of days past due to be considered default	90 days
Minimum prior year principal balance of commercial Real estate loans required to be reviewed annually	80.00%
Deposit liabilities reclassified as loans receivable	$ 676,000	$ 297,000
Number of contracts with payment default \| contract	0	0	0
Outstanding recorded investment, pre-modification	$ 782,000		$ 1,240,000
Loans to related parties		$ 36,000
Nonaccrual loans \| loan	0	0
Number of commitments to lend \| item	0	0	0
Number of loans in the process of foreclosure \| loan	0	0
Residential Mortgages [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Real estate acquired through foreclosure	$ 0	$ 0
Commercial And Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Outstanding recorded investment, pre-modification			$ 1,131,000
Commercial And Industrial [Member] \| Time Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Outstanding recorded investment, pre-modification			$ 1,000,000
Commercial Mortgages [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of OREO properties \| property		1
Other real estate owned	5,125,000
OREO Valuation allowance	$ 725,000

Loans And Leases Receivable, Number Of Commitments To Lend

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Loans and Leases Receivable, Related Parties, Nonaccrual

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Represents the minimum prior year principal balance of commercial real estate loans that is required to be reviewed annually.

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The number of days that a loan is past due to be considered in default under the modified terms of TDR.

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Number of Loans In Process Of Foreclosure

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Number Of Other Real Estate Owned

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Amount of allowance for credit losses related to receivables which had been measured under a general allowance for credit losses methodology that are now identified as troubled debt restructurings.

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Amount of deposits held by the entity that have been reclassified as loan balances receivable, for example, but not limited to, overdrafts receivable.

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Pre-modification amount of investment in financing receivables modified by troubled debt restructurings.

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Number of financing receivables that have been modified by troubled debt restructurings within the previous 12 months and for which there was a payment default.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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For an unclassified balance sheet, reflects the carrying amount of unpaid loan amounts due from related parties at the balance sheet date.

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Carrying amount of other real estate not separately disclosed, including, but not limited to, real estate investments, real estate loans that qualify as investments in real estate, and premises that are no longer used in operations may also be included in real estate owned. This does not include real estate assets taken in settlement of troubled loans through surrender or foreclosure.

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Carrying amount as of the balance sheet date of land and buildings obtained through foreclosure proceedings or defeasance in full or partial satisfaction of a debt arrangement.

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The valuation allowance loss on real estate owned or any impairment losses taken against real estate investments held for use or resale.

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