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Fair Value Measurements - Schedule Of Assets And Liabilities Measured At Fair Value On A Recurring Basis (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | --- | --- | ---
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Total available for sale securities | $ 271,610 | $ 307,019 |  |
Marketable equity securities | 7,265 | 5,731 |  |
Marketable equity securities |  | 5,731 |  |
Mortgage servicing rights | 10,821 | 7,305 |  |
Total other assets | 13,682 | 8,439 |  |
Derivative liability | 508 | 77 |  |
Level 1 inputs |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Total available for sale securities | 74,549 | 53,386 |  |
Marketable equity securities | 7,265 |  |  |
Marketable equity securities |  | 5,731 |  |
Mortgage servicing rights |  | 0 |  |
Total other assets | 0 | 0 |  |
Derivative liability | 0 | 0 |  |
Level 2 inputs |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Total available for sale securities | 197,061 | 253,633 |  |
Marketable equity securities | 0 |  |  |
Marketable equity securities |  | 0 |  |
Mortgage servicing rights |  | 0 |  |
Total other assets | 853 | 261 |  |
Derivative liability | 508 | 77 |  |
Level 3 inputs |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Total available for sale securities | 0 | 0 |  |
Marketable equity securities | 0 |  |  |
Marketable equity securities |  | 0 |  |
Mortgage servicing rights |  | 7,305 |  |
Total other assets | 12,829 | 8,178 |  |
Derivative liability | 0 | 0 |  |
U.S. Treasury and government sponsored entities |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Total available for sale securities | 208,860 | 249,461 |  |
U.S. Treasury and government sponsored entities | Level 1 inputs |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Total available for sale securities | 54,863 | 49,878 |  |
U.S. Treasury and government sponsored entities | Level 2 inputs |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Total available for sale securities | 153,997 | 199,583 |  |
U.S. Treasury and government sponsored entities | Level 3 inputs |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Total available for sale securities | 0 | 0 |  |
Municipal securities |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Total available for sale securities | 9,084 | 14,421 |  |
Municipal securities | Level 1 inputs |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Total available for sale securities | 0 | 0 |  |
Municipal securities | Level 2 inputs |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Total available for sale securities | 9,084 | 14,421 |  |
Municipal securities | Level 3 inputs |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Total available for sale securities | 0 | 0 |  |
Corporate bonds |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Total available for sale securities | 39,780 | 37,132 |  |
Corporate bonds | Level 1 inputs |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Total available for sale securities | 19,686 | 3,508 |  |
Corporate bonds | Level 2 inputs |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Total available for sale securities | 20,094 | 33,624 |  |
Corporate bonds | Level 3 inputs |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Total available for sale securities | 0 | 0 |  |
Collateralized loan obligations |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Total available for sale securities | 13,886 | 6,005 |  |
Collateralized loan obligations | Level 1 inputs |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Total available for sale securities | 0 | 0 |  |
Collateralized loan obligations | Level 2 inputs |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Total available for sale securities | 13,886 | 6,005 |  |
Collateralized loan obligations | Level 3 inputs |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Total available for sale securities | 0 | 0 |  |
Marketable equity securities |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Marketable equity securities | 7,265 |  |  |
Marketable equity securities |  | 5,731 |  |
Marketable equity securities | Level 1 inputs |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Marketable equity securities | 7,265 |  |  |
Marketable equity securities |  | 5,731 |  |
Marketable equity securities | Level 2 inputs |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Marketable equity securities | 0 |  |  |
Marketable equity securities |  | 0 |  |
Marketable equity securities | Level 3 inputs |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Marketable equity securities | 0 |  |  |
Marketable equity securities |  | 0 |  |
Mortgage servicing rights |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Mortgage servicing rights | 10,821 | 7,305 | $ 4,157 | $ 1,654
Mortgage servicing rights | Level 1 inputs |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Mortgage servicing rights | 0 |  |  |
Mortgage servicing rights | Level 2 inputs |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Mortgage servicing rights | 0 |  |  |
Mortgage servicing rights | Level 3 inputs |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Mortgage servicing rights | 10,821 |  |  |
Commercial servicing rights |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Mortgage servicing rights | 1,030 | 0 |  |
Commercial servicing rights | Level 1 inputs |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Mortgage servicing rights | 0 |  |  |
Commercial servicing rights | Level 2 inputs |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Mortgage servicing rights | 0 |  |  |
Commercial servicing rights | Level 3 inputs |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Mortgage servicing rights | 1,030 |  |  |
Interest rate swaps |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Derivative asset | 853 | 261 |  |
Derivative liability | 246 | 77 |  |
Interest rate swaps | Level 1 inputs |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Derivative asset | 0 | 0 |  |
Derivative liability | 0 | 0 |  |
Interest rate swaps | Level 2 inputs |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Derivative asset | 853 | 261 |  |
Derivative liability | 246 | 77 |  |
Interest rate swaps | Level 3 inputs |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Derivative asset | 0 | 0 |  |
Derivative liability | 0 | 0 |  |
Interest rate lock commitments |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Derivative asset | 978 | 873 |  |
Interest rate lock commitments | Level 1 inputs |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Derivative asset | 0 | 0 |  |
Interest rate lock commitments | Level 2 inputs |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Derivative asset | 0 | 0 |  |
Interest rate lock commitments | Level 3 inputs |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Derivative asset | 978 | $ 873 |  |
Retail interest rate contracts |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Derivative liability | 262 |  |  |
Retail interest rate contracts | Level 1 inputs |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Derivative liability | 0 |  |  |
Retail interest rate contracts | Level 2 inputs |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Derivative liability | 262 |  |  |
Retail interest rate contracts | Level 3 inputs |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Derivative liability | $ 0 |  |  |

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