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Loans - Nonaccrual Loans (Details) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Nonaccrual loans | $ 7,774 | $ 7,372
Commercial | Real Estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Nonaccrual loans | 1,907 | 915
Commercial | Construction |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Nonaccrual loans | 0 | 238
Commercial | Other |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Nonaccrual loans | 964 | 66
Municipal |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Nonaccrual loans | 0 | 0
Residential | Construction |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Nonaccrual loans | 0 | 0
Residential | Term |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Nonaccrual loans | 4,060 | 5,260
Home Equity LIne of Credit |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Nonaccrual loans | 843 | 893
Consumer |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Nonaccrual loans | $ 0 | $ 0

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