Fair Value (Narrative) (Details) $ in Thousands	9 Months Ended	12 Months Ended
Sep. 30, 2018 USD ($) property	Sep. 30, 2017 USD ($) property	Dec. 31, 2017 USD ($)
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Total recorded investment	$ 8,772		$ 9,130
Recorded Investment, with allowance recorded	1,495		491
Impaired Financing Receivable, Related Allowance	341		157
Additional impaired financing receivable	594		1,900
Partially charged down loans	39		442
Total fair value of impaired loans	1,800		1,800
Other real estate owned & other repossessed property	5,077		5,012
OREO	4,900		4,800
Other repossessed property	224		177
Transfers from level 1 to level 2	0
Transfers from level 2 to level 1	0
Estimated Fair Value [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Recorded Investment, with allowance recorded	1,200		334
Fair value of additional impaired financing receivable recorded investment	555		$ 1,500
Other Real Estate Owned [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Amount of write-down recognized on real estate	$ 147	$ 121
Number of real estate properties \| property	2	2
Other Real Estate Owned [Member] \| Estimated Fair Value [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
OREO	$ 922	$ 817

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Amount of transfers of assets measured on a recurring basis out of Level 1 of the fair value hierarchy into Level 2.

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Amount of transfers of assets measured on a recurring basis out of Level 2 of the fair value hierarchy into Level 1.

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Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

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The number of real estate properties owned as of the balance sheet date.

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Carrying amount as of the balance sheet date of assets other than real property that were received in full or partial satisfaction of a debt arrangement through foreclosure proceedings or defeasance.

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Carrying amount as of the balance sheet date of other real estate and foreclosed assets. Other real estate may include 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. Foreclosed assets include all assets obtained in full or partial satisfaction of a debt arrangement through foreclosure proceedings.

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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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Amount of write-down or reserve recognized in the income statement on real estate investments for entities with a substantial portion of business acquiring and holding investment real estate.

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