Fair Value Measurements - Financial instruments carried at fair value on nonrecurring basis (Details) - Fair Value Measurements Nonrecurring - USD ($) $ in Thousands |
Sep. 30, 2021 |
Dec. 31, 2020 |
|---|---|---|
| Level 1 | ||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis | ||
| Impaired loans | $ 0 | $ 0 |
| Servicing asset, net | 0 | 0 |
| Assets held for sale | 0 | |
| Level 2 | ||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis | ||
| Impaired loans | 0 | 0 |
| Servicing asset, net | 0 | 0 |
| Assets held for sale | 0 | |
| Level 3 | ||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis | ||
| Impaired loans | 47,162 | 42,661 |
| Servicing asset, net | $ 800 | 607 |
| Assets held for sale | $ 2,613 |