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Loans and Leases - Nonaccrual Loans and Leases by Loan Portfolio Segment and Class (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	$ 145,785	$ 87,124	$ 62,527
Financing Receivable, Nonaccrual, Interest Income	5	4
Loans held for investment, net	25,473,022	25,672,381	25,489,687
Performing
Financing Receivable, Nonaccrual [Line Items]
Loans held for investment, net	25,327,237		25,427,160
Real Estate Mortgage
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	129,234	83,056	47,730
Financing Receivable, Nonaccrual, Interest Income	5	3
Loans held for investment, net	15,967,399	15,407,611	16,111,985
Real Estate Mortgage | Performing
Financing Receivable, Nonaccrual [Line Items]
Loans held for investment, net	15,838,165		16,064,255
Real Estate Construction and Land
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	0	0	0
Financing Receivable, Nonaccrual, Interest Income	0	0
Loans held for investment, net	3,245,354	4,608,440	3,159,269
Real Estate Construction and Land | Performing
Financing Receivable, Nonaccrual [Line Items]
Loans held for investment, net	3,245,354		3,159,269
Commercial
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	15,715	3,543	13,986
Financing Receivable, Nonaccrual, Interest Income	0	1
Loans held for investment, net	5,820,567	5,229,107	5,765,307
Commercial | Performing
Financing Receivable, Nonaccrual [Line Items]
Loans held for investment, net	5,804,852		5,751,321
Consumer
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	836	525	811
Financing Receivable, Nonaccrual, Interest Income	0	0
Loans held for investment, net	439,702	427,223	453,126
Consumer | Performing
Financing Receivable, Nonaccrual [Line Items]
Loans held for investment, net	438,866		452,315
Finance Receivable Allowance | Consumer
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	832	525
Financing Receivable, Nonaccrual, Interest Income	0	0
No Finance Receivable Allowance | Consumer
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual, Interest Income	0	0
Financing Receivable, Nonaccrual, No Allowance	4	0
Commercial | Real Estate Mortgage
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	66,527		15,669
Financing Receivable, Nonaccrual, No Allowance	34,421	32,936
Loans held for investment, net	4,896,544		5,026,497
Commercial | Real Estate Mortgage | Performing
Financing Receivable, Nonaccrual [Line Items]
Loans held for investment, net	4,830,017		5,010,828
Commercial | Finance Receivable Allowance | Real Estate Mortgage
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	32,106	60
Financing Receivable, Nonaccrual, Interest Income	0	0
Commercial | No Finance Receivable Allowance | Real Estate Mortgage
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual, Interest Income	5	3
Multi-Family Real Estate Loans | Real Estate Mortgage
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	953		1,020
Financing Receivable, Nonaccrual, No Allowance	953	0
Loans held for investment, net	6,121,472		6,025,179
Multi-Family Real Estate Loans | Real Estate Mortgage | Performing
Financing Receivable, Nonaccrual [Line Items]
Loans held for investment, net	6,120,519		6,024,159
Multi-Family Real Estate Loans | Finance Receivable Allowance | Real Estate Mortgage
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	0	0
Financing Receivable, Nonaccrual, Interest Income	0	0
Multi-Family Real Estate Loans | No Finance Receivable Allowance | Real Estate Mortgage
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual, Interest Income	0	0
Other Residential Real Estate | Real Estate Mortgage
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	61,754		31,041
Financing Receivable, Nonaccrual, No Allowance	61,365	49,696
Loans held for investment, net	4,949,383		5,060,309
Other Residential Real Estate | Real Estate Mortgage | Performing
Financing Receivable, Nonaccrual [Line Items]
Loans held for investment, net	4,887,629		5,029,268
Other Residential Real Estate | Finance Receivable Allowance | Real Estate Mortgage
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	389	364
Financing Receivable, Nonaccrual, Interest Income	0	0
Other Residential Real Estate | No Finance Receivable Allowance | Real Estate Mortgage
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual, Interest Income	0	0
Commercial Real Estate Construction Loan Receivable | Real Estate Construction and Land
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	0		0
Financing Receivable, Nonaccrual, No Allowance	0	0
Loans held for investment, net	775,021		759,585
Commercial Real Estate Construction Loan Receivable | Real Estate Construction and Land | Performing
Financing Receivable, Nonaccrual [Line Items]
Loans held for investment, net	775,021		759,585
Commercial Real Estate Construction Loan Receivable | Finance Receivable Allowance | Real Estate Construction and Land
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	0	0
Financing Receivable, Nonaccrual, Interest Income	0	0
Commercial Real Estate Construction Loan Receivable | No Finance Receivable Allowance | Real Estate Construction and Land
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual, Interest Income	0	0
Residential Real Estate Construction Financing Receivable | Real Estate Construction and Land
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	0		0
Financing Receivable, Nonaccrual, No Allowance	0	0
Loans held for investment, net	2,470,333		2,399,684
Residential Real Estate Construction Financing Receivable | Real Estate Construction and Land | Performing
Financing Receivable, Nonaccrual [Line Items]
Loans held for investment, net	2,470,333		2,399,684
Residential Real Estate Construction Financing Receivable | Finance Receivable Allowance | Real Estate Construction and Land
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	0	0
Financing Receivable, Nonaccrual, Interest Income	0	0
Residential Real Estate Construction Financing Receivable | No Finance Receivable Allowance | Real Estate Construction and Land
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual, Interest Income	0	0
Venture Capital Loans | Commercial
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	0		325
Financing Receivable, Nonaccrual, No Allowance	0	0
Loans held for investment, net	1,513,641		1,446,362
Venture Capital Loans | Commercial | Performing
Financing Receivable, Nonaccrual [Line Items]
Loans held for investment, net	1,513,641		1,446,037
Venture Capital Loans | Finance Receivable Allowance | Commercial
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	0	0
Financing Receivable, Nonaccrual, Interest Income	0	0
Venture Capital Loans | No Finance Receivable Allowance | Commercial
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual, Interest Income	0	0
Other Commercial
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual, No Allowance	12,574	2,196
Other Commercial | Commercial
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	13,390		10,972
Loans held for investment, net	2,245,910		2,129,860
Other Commercial | Commercial | Performing
Financing Receivable, Nonaccrual [Line Items]
Loans held for investment, net	2,232,520		2,118,888
Other Commercial | Finance Receivable Allowance | Commercial
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	816	927
Financing Receivable, Nonaccrual, Interest Income	0	0
Other Commercial | No Finance Receivable Allowance
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual, Interest Income	0	1
Asset Based [Member] | Commercial
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	2,325		2,689
Financing Receivable, Nonaccrual, No Allowance	1,624	420
Loans held for investment, net	2,061,016		2,189,085
Asset Based [Member] | Commercial | Performing
Financing Receivable, Nonaccrual [Line Items]
Loans held for investment, net	2,058,691		$ 2,186,396
Asset Based [Member] | Finance Receivable Allowance | Commercial
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	701	0
Financing Receivable, Nonaccrual, Interest Income	0	0
Asset Based [Member] | No Finance Receivable Allowance | Commercial
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual, Interest Income	$ 0	$ 0

X

- Definition

Amount of interest income on financing receivable on nonaccrual status.

+ References

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-Topic 326
-SubTopic 20
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Amortized cost of financing receivable on nonaccrual status with no allowance for credit loss. Excludes net investment in lease.

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Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

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