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Impaired Loans (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Financing Receivable, Impaired [Line Items] |  |
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance | $ 3,630 | $ 3,029
Impaired Financing Receivable, with No Related Allowance, Charge-off And Payments Applied | (1,094) | (1,092)
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 2,536 | 1,937
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance | 227 | 193
Impaired Financing Receivable, with Related Allowance, Charge-off And Payments Applied | (21) | 0
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 206 | 193
Impaired Financing Receivable, With Related Allowance, Related Allowance | 42 | 31
Impaired Financing Receivable, Unpaid Principal Balance | 3,857 | 3,222
Impaired Financing Receivable, Charge-off And Payments Applied | (1,115) | (1,092)
Impaired Financing Receivable, Recorded Investment | 2,742 | 2,130
Impaired Financing Receivable, Related Allowance | 42 | 31
Commercial and Industrial Loans [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance |  | 15
Impaired Financing Receivable, with No Related Allowance, Charge-off And Payments Applied |  | 0
Impaired Financing Receivable, with No Related Allowance, Recorded Investment |  | 15
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance | 52 |
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 31 |
Impaired Financing Receivable, With Related Allowance, Related Allowance | 31 |
Construction And Land Development Loans [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance |  | 140
Impaired Financing Receivable, with No Related Allowance, Charge-off And Payments Applied |  | (108)
Impaired Financing Receivable, with No Related Allowance, Recorded Investment |  | 32
Impaired Financing Receivable, with Related Allowance, Charge-off And Payments Applied | (21) |
Commercial Real Estate Owner Occupied Loans [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance | 175 | 193
Impaired Financing Receivable, with Related Allowance, Charge-off And Payments Applied | 0 | 0
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 175 | 193
Impaired Financing Receivable, With Related Allowance, Related Allowance | 11 | 31
Commercial Real Estate Other Loans [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance | 3,630 | 2,874
Impaired Financing Receivable, with No Related Allowance, Charge-off And Payments Applied | (1,094) | (984)
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 2,536 | 1,890
Commercial Real Estate Loans, Total [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance | 3,630 | 2,874
Impaired Financing Receivable, with No Related Allowance, Charge-off And Payments Applied | (1,094) | (984)
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 2,536 | 1,890
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance | 175 | 193
Impaired Financing Receivable, with Related Allowance, Charge-off And Payments Applied | 0 | 0
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 175 | 193
Impaired Financing Receivable, With Related Allowance, Related Allowance | $ 11 | $ 31

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