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Loans and Leases - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans and leases	$ 213,480	$ 145,785	$ 189,605
Provision for credit losses	9,300	10,000
Transfers from loans held for investment to loans held for sale	0	7,466
Financing Receivable, Allowance for Credit Loss, Writeoff, after Recovery	14,074	1,184
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)	(4,400)
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	234,986	291,503	239,360	$ 281,687
Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal)	9,700	(11,000)
Real Estate Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans and leases	198,948	129,234	167,206
Financing Receivable, Allowance for Credit Loss, Writeoff, after Recovery	5,478	1,586
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	130,116	198,274	145,754	186,827
Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal)	10,160	(13,033)
Real Estate Mortgage | Other Residential Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans and leases	44,739		46,788
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans and leases	13,540	15,715	21,775
Financing Receivable, Allowance for Credit Loss, Writeoff, after Recovery	7,478	(2,165)
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	75,989	47,054	67,833	$ 45,156
Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal)	15,634	$ (267)
Credit Concentration Risk
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans and leases	$ 73,900
Credit Concentration Risk | Nonaccrual Loans And Leases Benchmark | Fair Value, Concentration of Risk, All Financial Instruments
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of nonaccrual loans and leases	35.00%
Nonaccrual
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivable, 90 or more days past due	$ 100,000		88,800
Receivable, 30-89 days past due	42,700		40,600
Financing receivable, nonaccrual status, current	70,800		60,200
Other Commercial | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans and leases	9,737		13,544
Financing Receivable, Excluding Accrued Interest, Modified, Increase (Decrease) from Modification	1,399
Venture Capital Loans | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans and leases	163		6,291
Asset Based | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans and leases	$ 3,640		$ 1,940

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