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Troubled Debt Restructuring (Details) - USD ($) $ in Thousands | Sep. 30, 2018 | Dec. 31, 2017
--- | --- | ---
Impaired Financing Receivable And Troubled Debt Restructing [Line Items] |  |
Impaired Financing Receivable, Troubled Debt Restructuring, Still Accruing | $ 162 | $ 462
Impaired Financing Receivable, Troubled Debt Restructuring, Nonaccrual | 696 | 1,462
Impaired Financing Receivable, Trouble Debt Structuring, Total | 858 | 1,924
Impaired Financing Receivable, Troubled Debt Restructuring, Allowance for Credit Losses | 0 | 42
Commercial and Industrial 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 | 0 | 31
Impaired Financing Receivable, Trouble Debt Structuring, Total | 0 | 31
Impaired Financing Receivable, Troubled Debt Restructuring, Allowance for Credit Losses | 0 | 31
Commercial Real Estate Owner Occupied Loans [Member] |  |
Impaired Financing Receivable And Troubled Debt Restructing [Line Items] |  |
Impaired Financing Receivable, Troubled Debt Restructuring, Still Accruing | 162 | 175
Impaired Financing Receivable, Troubled Debt Restructuring, Nonaccrual | 0 | 0
Impaired Financing Receivable, Trouble Debt Structuring, Total | 162 | 175
Impaired Financing Receivable, Troubled Debt Restructuring, Allowance for Credit Losses | 0 | 11
Commercial Real Estate Other Loans [Member] |  |
Impaired Financing Receivable And Troubled Debt Restructing [Line Items] |  |
Impaired Financing Receivable, Troubled Debt Restructuring, Still Accruing | 0 | 287
Impaired Financing Receivable, Troubled Debt Restructuring, Nonaccrual | 696 | 1,431
Impaired Financing Receivable, Trouble Debt Structuring, Total | 696 | 1,718
Impaired Financing Receivable, Troubled Debt Restructuring, Allowance for Credit Losses | 0 | 0
Commercial Real Estate Loans, Total [Member] |  |
Impaired Financing Receivable And Troubled Debt Restructing [Line Items] |  |
Impaired Financing Receivable, Troubled Debt Restructuring, Still Accruing | 162 | 462
Impaired Financing Receivable, Troubled Debt Restructuring, Nonaccrual | 696 | 1,431
Impaired Financing Receivable, Trouble Debt Structuring, Total | 858 | 1,893
Impaired Financing Receivable, Troubled Debt Restructuring, Allowance for Credit Losses | $ 0 | $ 11

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