Fair Values (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Total recorded investment	$ 9,130	$ 8,604
Recorded Investment, with allowance recorded	491	1,872
Impaired Financing Receivable, Related Allowance	157	334
Additional impaired financing receivable	1,900
Partially charged down loans	442	0
Total fair value of impaired loans	1,800
Other real estate owned & other repossessed property	5,012	2,767
OREO	4,800	2,600
Other repossessed assets	177	191
Estimated Fair Value [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Recorded Investment, with allowance recorded	334	1,500
Fair value of additional impaired financing receivable recorded investment	1,500
Other Real Estate Owned [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
OREO	956	3,000
Amount of write-down recognized on real estate	139	$ 505
Other Real Estate Owned [Member] \| Estimated Fair Value [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
OREO	$ 817

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Partial Charge Down, Financing Receivable

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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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Amount of allowance for credit losses related to recorded investment.

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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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