Fair Value Disclosures - Narrative (Details) $ in Thousands	3 Months Ended
	Sep. 30, 2023 USD ($)	Dec. 31, 2022 USD ($)
Fair Value, Inputs, Level 3 | Fair Value, Measurements, Nonrecurring
Fair Value Assets Measured On Non Recurring Basis Unobservable Input Reconciliation [Line Items]
Loans held for investment, net	$ 32,800	$ 0
Impaired loans, carrying value	50,400
Allowance allocations	$ 17,500
CRT securities | Minimum
Fair Value Assets Measured On Non Recurring Basis Unobservable Input Reconciliation [Line Items]
Debt securities, available-for-sale, term	5 years 1 month 20 days
CRT securities | Maximum
Fair Value Assets Measured On Non Recurring Basis Unobservable Input Reconciliation [Line Items]
Debt securities, available-for-sale, term	7 years 11 months 1 day
Measurement Input, Discount Rate | CRT securities | Minimum
Fair Value Assets Measured On Non Recurring Basis Unobservable Input Reconciliation [Line Items]
Debt securities, available-for-sale, measurement input	0.0689
Measurement Input, Discount Rate | CRT securities | Maximum
Fair Value Assets Measured On Non Recurring Basis Unobservable Input Reconciliation [Line Items]
Debt securities, available-for-sale, measurement input	0.1061
Measurement Input, Discount Rate | CRT securities | Weighted Average
Fair Value Assets Measured On Non Recurring Basis Unobservable Input Reconciliation [Line Items]
Debt securities, available-for-sale, measurement input	0.0820	0.0824
Debt securities, available-for-sale, term	6 years 1 month 13 days	6 years 3 months 3 days