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Disclosures about Fair Value of Assets and Liabilities - Quantitative Information about Unobservable Inputs (Details) $ in Thousands	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Quantitative information about unobservable inputs
Servicing rights	$ 158,457	$ 146,248	$ 110,348	$ 82,604
Collateral-dependent impaired loans | Minimum
Quantitative information about unobservable inputs
Marketability discount (as a percent)		0.04
Collateral-dependent impaired loans | Maximum
Quantitative information about unobservable inputs
Marketability discount (as a percent)		0.54
Level 3 | SBA | Constant Prepayment Rate | Minimum
Quantitative information about unobservable inputs
Servicing asset, measurement input		0.03
Level 3 | SBA | Constant Prepayment Rate | Maximum
Quantitative information about unobservable inputs
Servicing asset, measurement input		0.12
Level 3 | Servicing rights | Loans funded through PPP, CARES Act
Quantitative information about unobservable inputs
Servicing rights	$ 5,280	$ 4,632
Level 3 | Servicing rights | Loans funded through PPP, CARES Act | Discount Rate
Quantitative information about unobservable inputs
Servicing asset, measurement input	0.16	0.16
Level 3 | Servicing rights | Loans funded through PPP, CARES Act | Discount Rate | Weighted average
Quantitative information about unobservable inputs
Servicing asset, measurement input	0.16	0.16
Level 3 | Servicing rights | Loans funded through PPP, CARES Act | Constant Prepayment Rate | Minimum
Quantitative information about unobservable inputs
Servicing asset, measurement input	0.03
Level 3 | Servicing rights | Loans funded through PPP, CARES Act | Constant Prepayment Rate | Maximum
Quantitative information about unobservable inputs
Servicing asset, measurement input	0.14
Level 3 | Servicing rights | Loans funded through PPP, CARES Act | Constant Prepayment Rate | Weighted average
Quantitative information about unobservable inputs
Servicing asset, measurement input	0.09	0.08
Level 3 | Servicing rights | Single Family
Quantitative information about unobservable inputs
Servicing rights	$ 30,959	$ 29,926
Level 3 | Servicing rights | Single Family | Discount Rate
Quantitative information about unobservable inputs
Loan closing rates (as a percent)		0.10
Level 3 | Servicing rights | Single Family | Discount Rate | Minimum
Quantitative information about unobservable inputs
Servicing asset, measurement input	0.10
Loan closing rates (as a percent)		0.09
Level 3 | Servicing rights | Single Family | Discount Rate | Maximum
Quantitative information about unobservable inputs
Servicing asset, measurement input	0.11
Level 3 | Servicing rights | Single Family | Discount Rate | Weighted average
Quantitative information about unobservable inputs
Servicing asset, measurement input	0.10	0.09
Level 3 | Servicing rights | Single Family | Constant Prepayment Rate | Minimum
Quantitative information about unobservable inputs
Servicing asset, measurement input	0.06	0.07
Level 3 | Servicing rights | Single Family | Constant Prepayment Rate | Maximum
Quantitative information about unobservable inputs
Servicing asset, measurement input	0.16	0.10
Level 3 | Servicing rights | Single Family | Constant Prepayment Rate | Weighted average
Quantitative information about unobservable inputs
Servicing asset, measurement input	0.07	0.07
Level 3 | Servicing rights | Multi-family
Quantitative information about unobservable inputs
Servicing rights	$ 122,218	$ 111,690
Level 3 | Servicing rights | Multi-family | Discount Rate | Minimum
Quantitative information about unobservable inputs
Servicing asset, measurement input	0.08	0.08
Level 3 | Servicing rights | Multi-family | Discount Rate | Maximum
Quantitative information about unobservable inputs
Servicing asset, measurement input	0.13	0.13
Level 3 | Servicing rights | Multi-family | Discount Rate | Weighted average
Quantitative information about unobservable inputs
Servicing asset, measurement input	0.09	0.09
Level 3 | Servicing rights | Multi-family | Constant Prepayment Rate | Minimum
Quantitative information about unobservable inputs
Servicing asset, measurement input	0	0
Level 3 | Servicing rights | Multi-family | Constant Prepayment Rate | Maximum
Quantitative information about unobservable inputs
Servicing asset, measurement input	0.50	0.39
Level 3 | Servicing rights | Multi-family | Constant Prepayment Rate | Weighted average
Quantitative information about unobservable inputs
Servicing asset, measurement input	0.07	0.08
Level 3 | Collateral-dependent impaired loans
Quantitative information about unobservable inputs
Collateral-dependent impaired loans	$ 47,026	$ 4,465
Level 3 | Collateral-dependent impaired loans | Minimum
Quantitative information about unobservable inputs
Marketability discount (as a percent)	0
Level 3 | Collateral-dependent impaired loans | Maximum
Quantitative information about unobservable inputs
Marketability discount (as a percent)	1
Level 3 | Collateral-dependent impaired loans | Weighted average
Quantitative information about unobservable inputs
Marketability discount (as a percent)	0.02	0.05
Level 3 | Available for sale securities | Measurement Input, Credit Spread
Quantitative information about unobservable inputs
Mortgage-backed - Non-agency residential- fair value option	$ 485,500
Mortgage-backed - Non-agency residential- fair value option (as a percent)	2
Level 3 | Available for sale securities | Measurement Input, Credit Spread | Weighted average
Quantitative information about unobservable inputs
Mortgage-backed - Non-agency residential- fair value option (as a percent)	2
Level 3 | Interest rate lock commitments
Quantitative information about unobservable inputs
Derivative assets	$ 140	$ 28
Derivative liabilities	$ 4	$ 23
Level 3 | Interest rate lock commitments | Measurement Input, Maturity | Minimum
Quantitative information about unobservable inputs
Loan closing rates (as a percent)	0.45	0.60
Loan closing rates (as a percent)		0.60
Level 3 | Interest rate lock commitments | Measurement Input, Maturity | Maximum
Quantitative information about unobservable inputs
Loan closing rates (as a percent)	0.99	0.87
Loan closing rates (as a percent)	0.99	0.87
Level 3 | Interest rate lock commitments | Measurement Input, Maturity | Weighted average
Quantitative information about unobservable inputs
Loan closing rates (as a percent)	0.78	0.77
Loan closing rates (as a percent)	0.78
Level 3 | Put Option | Measurement Input, Credit Spread
Quantitative information about unobservable inputs
Derivative assets	$ 18,654
Loan closing rates (as a percent)	2
Level 3 | Put Option | Measurement Input, Credit Spread | Weighted average
Quantitative information about unobservable inputs
Loan closing rates (as a percent)	2
Level 3 | Interest Rate Floor | Measurement Input, Credit Spread
Quantitative information about unobservable inputs
Derivative assets	$ 6,576
Level 3 | Interest Rate Floor | Measurement Input, Credit Spread | Minimum
Quantitative information about unobservable inputs
Loan closing rates (as a percent)	6
Level 3 | Interest Rate Floor | Measurement Input, Credit Spread | Maximum
Quantitative information about unobservable inputs
Loan closing rates (as a percent)	7
Level 3 | Interest Rate Floor | Measurement Input, Credit Spread | Weighted average
Quantitative information about unobservable inputs
Loan closing rates (as a percent)	7

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No definition available.

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