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Income Taxes Schedule of deferred income tax asset and liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
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Components of Deferred Tax Assets [Abstract] |  |
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Provision for Loan Losses | $ 12,120 | $ 10,818
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Pensions | 7,091 | 7,888
Deferred Tax Assets, Unrealized Losses on Available-for-Sale Securities, Gross | 0 | 5,347
Deferred Tax Assets, Hedging Transactions | 121 | 0
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Compensation | 3,131 | 2,896
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Impairment Losses | 964 | 1,028
Deferred tax asset, deferred loan fees | 1,451 | 1,221
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Other | 477 | 556
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost | 2,132 | 1,567
Deferred Tax Assets, Property, Plant and Equipment | 0 | 206
Deferred Tax Assets, Operating Loss Carryforwards | 4,094 | 4,663
Deferred Tax Assets, Other | 843 | 824
Deferred Tax Assets, Gross | 35,521 | 37,014
Components of Deferred Tax Liabilities [Abstract] |  |
Deferred Tax Liabilities, Unrealized Gains on Trading Securities | 4,662 | 0
Deferred Tax Liabilities, Property, Plant and Equipment | 585 | 0
Deferred Tax Liabilities, Investments | 6,231 | 6,120
Deferred Tax Liabilities, Prepaid Expenses | 19,238 | 19,133
Deferred Tax Liabilities, Mortgage Servicing Rights | 2,153 | 2,137
Deferred Tax Liabilities, Partnership Adjustments | 178 | 630
Deferred Tax Liabilities, Deferred Expense, Deferred Policy Acquisition Cost | 49 | 769
Deferred Tax Liabilities, Operating lease right of use asset | 2,932 | 0
Deferred Tax Liabilities, Leasing Arrangements | 2,697 | 0
Deferred Tax Liabilities, Other | 488 | 210
Deferred Tax Liabilities, Tax Deferred Income | 39,213 | 28,999
Net deferred tax asset (liability) | 3,692 |
Deferred Tax Assets, Net |  | 8,015
Deferred Tax Assets, Operating lease liability | $ 3,097 | $ 0

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