Loans and Leases Credit Risk Rating Categories (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Financing Receivable, Past Due [Line Items]
Financing Receivable, Nonaccrual	$ 159,168	$ 189,605
Loans held for investment, net	25,032,679	23,781,663
Mortgages [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Nonaccrual	154,676	167,206
Loans held for investment, net	13,750,787	13,427,659
Real Estate Construction [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Nonaccrual	0	0
Loans held for investment, net	1,947,627	3,172,293
Commercial Portfolio Segment [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Nonaccrual	3,135	21,775
Loans held for investment, net	8,977,206	6,778,829
Consumer Portfolio Segment [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Nonaccrual	1,357	624
Loans held for investment, net	357,059	402,882
Classified [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	800,330	563,502
Classified [Member] | Mortgages [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	522,193	462,435
Classified [Member] | Real Estate Construction [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	55,810	0
Classified [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	220,722	100,358
Classified [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	1,605	709
Special Mention [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	458,683	1,097,315
Special Mention [Member] | Mortgages [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	343,284	565,055
Special Mention [Member] | Real Estate Construction [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	10,714	351,244
Special Mention [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	99,446	173,608
Special Mention [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	5,239	7,408
Pass [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	23,773,666	22,120,846
Pass [Member] | Mortgages [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	12,885,310	12,400,169
Pass [Member] | Real Estate Construction [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	1,881,103	2,821,049
Pass [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	8,657,038	6,504,863
Pass [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	350,215	394,765
Performing Financing Receivable [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	24,873,511	23,592,058
Performing Financing Receivable [Member] | Mortgages [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	13,596,111	13,260,453
Performing Financing Receivable [Member] | Real Estate Construction [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	1,947,627	3,172,293
Performing Financing Receivable [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	8,974,071	6,757,054
Performing Financing Receivable [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	355,702	402,258
Asset-based | Commercial Portfolio Segment [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Nonaccrual	0	1,940
Loans held for investment, net	2,951,010	2,087,969
Asset-based | Classified [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	36,732	5,003
Asset-based | Special Mention [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	7,180	9,547
Asset-based | Pass [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	2,907,098	2,073,419
Asset-based | Performing Financing Receivable [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	2,951,010	2,086,029
Venture capital | Commercial Portfolio Segment [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Nonaccrual	625	6,291
Loans held for investment, net	2,222,097	1,537,776
Venture capital | Classified [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	171,847	75,406
Venture capital | Special Mention [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	64,577	125,320
Venture capital | Pass [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	1,985,673	1,337,050
Venture capital | Performing Financing Receivable [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	2,221,472	1,531,485
Other commercial | Commercial Portfolio Segment [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Nonaccrual	2,510	13,544
Loans held for investment, net	3,804,099	3,153,084
Other commercial | Classified [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	12,143	19,949
Other commercial | Special Mention [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	27,689	38,741
Other commercial | Pass [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	3,764,267	3,094,394
Other commercial | Performing Financing Receivable [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	3,801,589	3,139,540
Commercial Real Estate Construction Loan Receivable [Member] | Real Estate Construction [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Nonaccrual	0	0
Loans held for investment, net	379,387	799,131
Commercial Real Estate Construction Loan Receivable [Member] | Classified [Member] | Real Estate Construction [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	52,828	0
Commercial Real Estate Construction Loan Receivable [Member] | Special Mention [Member] | Real Estate Construction [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	0	148,024
Commercial Real Estate Construction Loan Receivable [Member] | Pass [Member] | Real Estate Construction [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	326,559	651,107
Commercial Real Estate Construction Loan Receivable [Member] | Performing Financing Receivable [Member] | Real Estate Construction [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	379,387	799,131
Residential Real Estate Construction Financing Receivable [Member] | Real Estate Construction [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Nonaccrual	0	0
Loans held for investment, net	1,568,240	2,373,162
Residential Real Estate Construction Financing Receivable [Member] | Classified [Member] | Real Estate Construction [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	2,982	0
Residential Real Estate Construction Financing Receivable [Member] | Special Mention [Member] | Real Estate Construction [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	10,714	203,220
Residential Real Estate Construction Financing Receivable [Member] | Pass [Member] | Real Estate Construction [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	1,554,544	2,169,942
Residential Real Estate Construction Financing Receivable [Member] | Performing Financing Receivable [Member] | Real Estate Construction [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	1,568,240	2,373,162
Commercial Real Estate [Member] | Mortgages [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Nonaccrual	93,334	97,655
Loans held for investment, net	4,314,637	4,578,772
Commercial Real Estate [Member] | Classified [Member] | Mortgages [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	297,606	301,278
Commercial Real Estate [Member] | Special Mention [Member] | Mortgages [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	126,998	348,014
Commercial Real Estate [Member] | Pass [Member] | Mortgages [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	3,890,033	3,929,480
Commercial Real Estate [Member] | Performing Financing Receivable [Member] | Mortgages [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	4,221,303	4,481,117
Residential Real Estate [Member] | Mortgages [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	6,089,417	6,041,713
Multi-Family Real Estate Loans | Mortgages [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Nonaccrual	3,358	22,763
Loans held for investment, net	6,089,417	6,041,713
Multi-Family Real Estate Loans | Classified [Member] | Mortgages [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	166,385	113,164
Multi-Family Real Estate Loans | Special Mention [Member] | Mortgages [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	216,286	202,690
Multi-Family Real Estate Loans | Pass [Member] | Mortgages [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	5,706,746	5,725,859
Multi-Family Real Estate Loans | Performing Financing Receivable [Member] | Mortgages [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	6,086,059	6,018,950
Other Residential Real Estate | Mortgages [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Nonaccrual	57,984	46,788
Loans held for investment, net	3,346,733	2,807,174
Other Residential Real Estate | Classified [Member] | Mortgages [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	58,202	47,993
Other Residential Real Estate | Special Mention [Member] | Mortgages [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	0	14,351
Other Residential Real Estate | Pass [Member] | Mortgages [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	3,288,531	2,744,830
Other Residential Real Estate | Performing Financing Receivable [Member] | Mortgages [Member]
Financing Receivable, Past Due [Line Items]
Loans held for investment, net	$ 3,288,749	$ 2,760,386