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Accounting Pronouncements Recently Adopted or Issued - Impact of Adopting the New Revenue Standard on Consolidated Statements of Operations (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Non-interest income: |  |  |
ATM and interchange fees | $ 3,785 | $ 4,313 | $ 4,812
Non-interest expense: |  |  |
Other non-interest expense | 11,034 | 9,501 | 7,824
Balance without Adoption of ASC 606 | ASU 2014-09 |  |  |
Non-interest income: |  |  |
ATM and interchange fees | 5,306 | 5,426 | 5,840
Non-interest expense: |  |  |
Other non-interest expense | 12,555 | 10,614 | 8,852
Effect of Change | ASU 2014-09 |  |  |
Non-interest income: |  |  |
ATM and interchange fees | (1,521) | (1,113) | (1,028)
Non-interest expense: |  |  |
Other non-interest expense | $ (1,521) | $ (1,113) | $ (1,028)

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