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Servicing Rights - Key Assumptions and the Sensitivity of the Fair Value (Details) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 30, 2022 | Dec. 31, 2021 | Mar. 31, 2022 | Jun. 30, 2021 | Mar. 31, 2021 | Dec. 31, 2020
Servicing Assets at Fair Value [Line Items] |  |  |  |  |  |
Aggregate portfolio principal balance | $ 818,266 | $ 772,764 |  |  |  |
Base |  |  |  |  |  |
Percentage of MSR (percent) | 1.99% | 1.78% |  |  |  |
Mortgage servicing rights |  |  |  |  |  |
Servicing Assets at Fair Value [Line Items] |  |  |  |  |  |
Aggregate portfolio principal balance | $ 818,266 | $ 772,764 |  |  |  |
Weighted average rate of note (percent) | 3.28% | 3.31% |  |  |  |
Base |  |  |  |  |  |
Constant prepayment rate (percent) | 7.37% | 11.80% |  |  |  |
Discount rate (percent) | 9.25% | 8.00% |  |  |  |
Fair value MSR | $ 16,301 | $ 13,724 | $ 15,422 | $ 12,835 | $ 11,657 | $ 11,218
Percentage of MSR (percent) | 1.99% | 1.78% |  |  |  |
1.0% Adverse Rate Change |  |  |  |  |  |
Constant prepayment rate (percent) | 14.75% | 23.59% |  |  |  |
Discount rate (percent) | 8.25% | 7.00% |  |  |  |
Fair value MSR | $ 12,424 | $ 9,612 |  |  |  |
Percentage of MSR (percent) | 1.52% | 1.24% |  |  |  |
2.0% Adverse Rate Change |  |  |  |  |  |
Constant prepayment rate (percent) | 22.12% | 34.57% |  |  |  |
Discount rate (percent) | 7.25% | 6.00% |  |  |  |
Fair value MSR | $ 9,885 | $ 7,256 |  |  |  |
Percentage of MSR (percent) | 1.21% | 0.94% |  |  |  |

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