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Troubled Debt Restructuring (Details) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
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Impaired Financing Receivable And Troubled Debt Restructing [Line Items] |  |
Impaired Financing Receivable, Troubled Debt Restructuring, Still Accruing | $ 208 | $ 1,075
Impaired Financing Receivable, Troubled Debt Restructuring, Nonaccrual | 1,850 | 812
Impaired Financing Receivable, Trouble Debt Structuring, Total | 2,058 | 1,887
Impaired Financing Receivable, Troubled Debt Restructuring, Allowance for Credit Losses | 31 | 121
Commercial and Industrial Loans [Member] |  |
Impaired Financing Receivable And Troubled Debt Restructing [Line Items] |  |
Impaired Financing Receivable, Troubled Debt Restructuring, Still Accruing | 15 | 48
Impaired Financing Receivable, Troubled Debt Restructuring, Nonaccrual | 0 | 0
Impaired Financing Receivable, Trouble Debt Structuring, Total | 15 | 48
Impaired Financing Receivable, Troubled Debt Restructuring, Allowance for Credit Losses | 0 | 0
Construction And Land Development Loans [Member] |  |
Impaired Financing Receivable And Troubled Debt Restructing [Line Items] |  |
Impaired Financing Receivable, Troubled Debt Restructuring, Still Accruing | 0 | 0
Impaired Financing Receivable, Troubled Debt Restructuring, Nonaccrual | 32 | 582
Impaired Financing Receivable, Trouble Debt Structuring, Total | 32 | 582
Impaired Financing Receivable, Troubled Debt Restructuring, Allowance for Credit Losses | 0 | 0
Commercial Real Estate Owner Occupied Loans [Member] |  |
Impaired Financing Receivable And Troubled Debt Restructing [Line Items] |  |
Impaired Financing Receivable, Troubled Debt Restructuring, Still Accruing | 193 | 1,027
Impaired Financing Receivable, Troubled Debt Restructuring, Nonaccrual | 0 | 230
Impaired Financing Receivable, Trouble Debt Structuring, Total | 193 | 1,257
Impaired Financing Receivable, Troubled Debt Restructuring, Allowance for Credit Losses | 31 | 121
Commercial Real Estate Other Loans [Member] |  |
Impaired Financing Receivable And Troubled Debt Restructing [Line Items] |  |
Impaired Financing Receivable, Troubled Debt Restructuring, Still Accruing | 0 |
Impaired Financing Receivable, Troubled Debt Restructuring, Nonaccrual | 1,818 |
Impaired Financing Receivable, Trouble Debt Structuring, Total | 1,818 |
Impaired Financing Receivable, Troubled Debt Restructuring, Allowance for Credit Losses | 0 |
Commercial Real Estate Loans, Total [Member] |  |
Impaired Financing Receivable And Troubled Debt Restructing [Line Items] |  |
Impaired Financing Receivable, Troubled Debt Restructuring, Still Accruing | 193 | 1,027
Impaired Financing Receivable, Troubled Debt Restructuring, Nonaccrual | 1,818 | 230
Impaired Financing Receivable, Trouble Debt Structuring, Total | 2,011 | 1,257
Impaired Financing Receivable, Troubled Debt Restructuring, Allowance for Credit Losses | $ 31 | $ 121

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