v3.26.1
Loans and Leases Held for Investment - Credit Risk Rating Categories for Loans and Leases Held for Investment (Details) - USD ($)
$ in Thousands
Mar. 31, 2026
Dec. 31, 2025
Mar. 31, 2025
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current $ 24,435,218 $ 24,831,721  
Loans and leases HFI 24,780,347 25,032,679 $ 24,126,527
Real Estate Mortgage      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current 13,340,828 13,581,261  
Loans and leases HFI 13,506,898 13,750,787 13,492,658
Real Estate Construction and Land      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current 1,718,717 1,921,087  
Loans and leases HFI 1,892,329 1,947,627 2,861,038
Commercial      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current 9,030,497 8,974,976  
Loans and leases HFI 9,032,987 8,977,206 7,378,799
Consumer      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current 345,176 354,397  
Loans and leases HFI 348,133 357,059 $ 394,032
Classified      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current 842,834 800,330  
Classified | Real Estate Mortgage      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current 578,223 522,193  
Classified | Real Estate Construction and Land      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current 32,925 55,810  
Classified | Commercial      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current 230,379 220,722  
Classified | Consumer      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current 1,307 1,605  
Special Mention      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current 688,659    
Loans and leases HFI   458,683  
Special Mention | Real Estate Mortgage      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current 201,794    
Loans and leases HFI   343,284  
Special Mention | Real Estate Construction and Land      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current 363,100    
Loans and leases HFI   10,714  
Special Mention | Commercial      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current 118,758    
Loans and leases HFI   99,446  
Special Mention | Consumer      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current 5,007    
Loans and leases HFI   5,239  
Pass      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current   23,773,666  
Loans and leases HFI 23,248,854    
Pass | Real Estate Mortgage      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current   12,885,310  
Loans and leases HFI 12,726,881    
Pass | Real Estate Construction and Land      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current   1,881,103  
Loans and leases HFI 1,496,304    
Pass | Commercial      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current   8,657,038  
Loans and leases HFI 8,683,850    
Pass | Consumer      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current   350,215  
Loans and leases HFI 341,819    
Venture Capital Loans | Commercial      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current 2,321,666 2,222,097  
Loans and leases HFI 2,322,261 2,222,097  
Venture Capital Loans | Classified | Commercial      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current 172,496 171,847  
Venture Capital Loans | Special Mention | Commercial      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current 103,592    
Loans and leases HFI   64,577  
Venture Capital Loans | Pass | Commercial      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current   1,985,673  
Loans and leases HFI 2,046,173    
Other Commercial | Commercial      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current 3,500,002 3,803,011  
Loans and leases HFI 3,501,388 3,804,099  
Other Commercial | Classified | Commercial      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current 22,410 12,143  
Other Commercial | Special Mention | Commercial      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current 4,374    
Loans and leases HFI   27,689  
Other Commercial | Pass | Commercial      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current   3,764,267  
Loans and leases HFI 3,474,604    
Asset Based | Commercial      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current 3,208,829 2,949,868  
Loans and leases HFI 3,209,338 2,951,010  
Asset Based | Classified | Commercial      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current 35,473 36,732  
Asset Based | Special Mention | Commercial      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current 10,792    
Loans and leases HFI   7,180  
Asset Based | Pass | Commercial      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current   2,907,098  
Loans and leases HFI 3,163,073    
Commercial Real Estate Construction Loan Receivable | Real Estate Construction and Land      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current 331,650 379,387  
Loans and leases HFI 364,575 379,387  
Commercial Real Estate Construction Loan Receivable | Classified | Real Estate Construction and Land      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current 32,925 52,828  
Commercial Real Estate Construction Loan Receivable | Special Mention | Real Estate Construction and Land      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current 0    
Loans and leases HFI   0  
Commercial Real Estate Construction Loan Receivable | Pass | Real Estate Construction and Land      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current   326,559  
Loans and leases HFI 331,650    
Residential Real Estate Construction Financing Receivable | Real Estate Construction and Land      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current 1,387,067 1,541,700  
Loans and leases HFI 1,527,754 1,568,240  
Residential Real Estate Construction Financing Receivable | Classified | Real Estate Construction and Land      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current 0 2,982  
Residential Real Estate Construction Financing Receivable | Special Mention | Real Estate Construction and Land      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current 363,100    
Loans and leases HFI   10,714  
Residential Real Estate Construction Financing Receivable | Pass | Real Estate Construction and Land      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current   1,554,544  
Loans and leases HFI 1,164,654    
Commercial | Real Estate Mortgage      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current 4,041,500 4,257,633  
Loans and leases HFI 4,093,386 4,314,637  
Commercial | Classified | Real Estate Mortgage      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current 284,897 297,606  
Commercial | Special Mention | Real Estate Mortgage      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current 119,711    
Loans and leases HFI   126,998  
Commercial | Pass | Real Estate Mortgage      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current   3,890,033  
Loans and leases HFI 3,688,778    
Other Residential Real Estate | Real Estate Mortgage      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current 3,379,605 3,269,634  
Loans and leases HFI 3,458,410 3,346,733  
Other Residential Real Estate | Classified | Real Estate Mortgage      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current 53,587 58,202  
Other Residential Real Estate | Special Mention | Real Estate Mortgage      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current 0    
Loans and leases HFI   0  
Other Residential Real Estate | Pass | Real Estate Mortgage      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current   3,288,531  
Loans and leases HFI 3,404,823    
Multifamily | Real Estate Mortgage      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current 5,919,723 6,053,994  
Loans and leases HFI 5,955,102 6,089,417  
Multifamily | Classified | Real Estate Mortgage      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current 239,739 166,385  
Multifamily | Special Mention | Real Estate Mortgage      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current 82,083    
Loans and leases HFI   216,286  
Multifamily | Pass | Real Estate Mortgage      
Financing Receivable, Past Due [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Current   5,706,746  
Loans and leases HFI $ 5,633,280    
Non Purchased Credit Impaired Loans and Leases      
Financing Receivable, Past Due [Line Items]      
Loans and leases HFI   $ 25,032,679