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Income Taxes - Deferred Taxes and Liabilities (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Valuation Allowance [Line Items] |  |  |
Deferred Tax Assets, Derivative Instruments | $ 7,614 | $ 6,800 |
Deferred Tax Asset - basis in securities | 1,810 | 5,661 |
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Provision for Loan Losses | 1,929 | 1,862 |
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost | 623 | 532 |
Deferred Tax Assets, Capital Loss Carryforwards | 36 | 36 |
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Compensation | 967 | 778 |
Deferred Tax Assets, Other | 121 | 74 |
Deferred Tax Assets, Gross | 13,064 | 15,707 |
Deferred Tax Liabilities, Other Comprehensive Income | 4,807 | 12,376 |
Deferred Tax Liabilities, Derivatives | 1,827 | 1,203 |
Deferred Tax Liabilities, Other | 61 | 80 |
Deferred Tax Liabilities, Gross | 6,695 | 13,659 |
Deferred tax asset, net | 6,369 | 2,048 |
Tax Credit Carryforward, Amount | 200 |  |
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount | 0 | 1,365 | $ 0
Capital Loss Carryforward [Member] |  |  |
Valuation Allowance [Line Items] |  |  |
Deferred Tax Assets, Valuation Allowance | (36) | $ (36) |
Expired Capital Loss Carryforward [Member] |  |  |
Valuation Allowance [Line Items] |  |  |
Tax Credit Carryforward, Amount | $ 0 |  |

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