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Fair Value Measurements - Fair Value of Assets Measured on Nonrecurring Basis (Details) - Nonrecurring - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Impaired loans | $ 27,348 | $ 21,686
OREO | 2,820 | 4,319
Mortgage servicing rights | 53,208 |
Total financial assets | 83,376 | 26,005
Level 1 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Impaired loans | 0 | 0
OREO | 0 | 0
Mortgage servicing rights | 0 |
Total financial assets | 0 | 0
Level 2 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Impaired loans | 0 | 0
OREO | 0 | 0
Mortgage servicing rights | 0 |
Total financial assets | 0 | 0
Level 3 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Impaired loans | 27,348 | 21,686
OREO | 2,820 | 4,319
Mortgage servicing rights | 53,208 |
Total financial assets | $ 83,376 | $ 26,005

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