Fair Value Measurements - Valuation Techniques and Unobservable Inputs Related to Level 3 Assets (Details) $ in Thousands	Mar. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total recurring fair value measurements	$ 511,266	$ 310,124
Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total recurring fair value measurements	$ 493,185	$ 310,124
Level 3 | Valuation, Market Approach | Measurement Input Selling Cost
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Individually evaluated loans requiring specific allowance, net	0.080	0.080
Real estate owned, net	0.080	0.080
Level 3 | Discounted Cash Flow | Discount rate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Loans held for investment, net	0.097
Loans held for investment, at fair value	0.097
Level 3 | Minimum | Discounted Cash Flow | Discount rate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Loans held for investment, at fair value		0.0835
Mortgage servicing rights, at fair value	0.080	0.080
Level 3 | Minimum | Discounted Cash Flow | Measurement Input, Prepayment Rate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Loans held for investment, net	0.010
Loans held for investment, at fair value	0.010	0.010
Mortgage servicing rights, at fair value	0.056	0.056
Level 3 | Minimum | Discounted Cash Flow | Default Rate [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Loans held for investment, net	0.001
Loans held for investment, at fair value	0.003	0.0012
Level 3 | Minimum | Discounted Cash Flow | Loss Severity Rate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Loans held for investment, net	0.000
Loans held for investment, at fair value	0.000	0.0000
Level 3 | Maximum | Discounted Cash Flow | Discount rate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Loans held for investment, at fair value		0.0935
Mortgage servicing rights, at fair value	0.120	0.120
Level 3 | Maximum | Discounted Cash Flow | Measurement Input, Prepayment Rate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Loans held for investment, net	0.500
Loans held for investment, at fair value	0.500	0.300
Mortgage servicing rights, at fair value	0.168	0.168
Level 3 | Maximum | Discounted Cash Flow | Default Rate [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Loans held for investment, net	0.055
Loans held for investment, at fair value	0.081	0.0699
Level 3 | Maximum | Discounted Cash Flow | Loss Severity Rate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Loans held for investment, net	0.185
Loans held for investment, at fair value	0.185	0.1845
Level 3 | Weighted Average | Valuation, Market Approach | Measurement Input Selling Cost
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Individually evaluated loans requiring specific allowance, net	0.080	0.080
Real estate owned, net	0.080	0.080
Level 3 | Weighted Average | Discounted Cash Flow | Discount rate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Loans held for investment, net	0.097
Loans held for investment, at fair value	0.097	0.089
Mortgage servicing rights, at fair value	0.081	0.081
Level 3 | Weighted Average | Discounted Cash Flow | Measurement Input, Prepayment Rate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Loans held for investment, net	0.253
Loans held for investment, at fair value	0.253	0.151
Mortgage servicing rights, at fair value	0.063	0.063
Level 3 | Weighted Average | Discounted Cash Flow | Default Rate [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Loans held for investment, net	0.007
Loans held for investment, at fair value	0.028	0.006
Level 3 | Weighted Average | Discounted Cash Flow | Loss Severity Rate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Loans held for investment, net	0.035
Loans held for investment, at fair value	0.031	0.035
Level 3 | Real Estate Owned Member
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total recurring fair value measurements	$ 21,778	$ 13,325
Level 3 | Individually evaluated loans requiring allowance net
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total recurring fair value measurements	11,532	11,466
Level 3 | Loans Held for Investment, Net
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total recurring fair value measurements	3,169,280
Level 3 | Loans Held for Investment
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total recurring fair value measurements	450,732	276,095
Level 3 | Mortgage Servicing Rights
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total recurring fair value measurements	$ 9,143	$ 9,238