Fair Value Measurement - Loan Servicing Sensitivity (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021	Dec. 31, 2020
Sensitivity Analysis of Fair Value of Interests Continued to be Held by Transferor, Servicing Assets or Liabilities, Impact of Adverse Change in Assumption [Line Items]
Loan servicing assets	$ 27,960	$ 18,388
Loan servicing liabilities	8,290	8,780
Fair Value, Inputs, Level 3
Sensitivity Analysis of Fair Value of Interests Continued to be Held by Transferor, Servicing Assets or Liabilities, Impact of Adverse Change in Assumption [Line Items]
Loan servicing assets	27,960	18,388
Loan servicing liabilities	8,290	8,780
Fair Value, Inputs, Level 3 | Loan Servicing Liabilities
Sensitivity Analysis of Fair Value of Interests Continued to be Held by Transferor, Servicing Assets or Liabilities, Impact of Adverse Change in Assumption [Line Items]
Loan servicing liabilities	8,290	8,780	$ 10,853	$ 8,254
10% market-servicing rates increase	4,938	5,357
20% market-servicing rates increase	9,940	10,788
Fair Value, Inputs, Level 3 | Loan Servicing Assets
Sensitivity Analysis of Fair Value of Interests Continued to be Held by Transferor, Servicing Assets or Liabilities, Impact of Adverse Change in Assumption [Line Items]
Loan servicing assets	27,960	18,388	$ 8,734	$ 6,831
10% market-servicing rates increase	(8,150)	(5,539)
20% market-servicing rates increase	$ (16,236)	$ (11,002)