v3.25.2
Loans and Lease Finance Receivables and Allowance for Credit Losses - Schedule of Balance and Activity Related to Allowance for Loan Losses for Held-for-Investment Loans by Type (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Financing Receivable, Allowance for Credit Losses [Line Items]        
Beginning balance $ 78,252 $ 82,817 $ 80,122 $ 86,842
Charge-offs (429) (51) (469) (4,318)
Recoveries 180 20 350 262
Provision for (Recapture of) Credit Losses 0 0 (2,000) 0
Ending balance 78,003 82,786 78,003 82,786
Commercial Real Estate [Member]        
Financing Receivable, Allowance for Credit Losses [Line Items]        
Beginning balance 65,302 69,445 66,237 69,466
Charge-offs 0 0 0 (2,258)
Recoveries 0 0 0 0
Provision for (Recapture of) Credit Losses (760) (40) (1,695) 2,197
Ending balance 64,542 69,405 64,542 69,405
Construction [Member]        
Financing Receivable, Allowance for Credit Losses [Line Items]        
Beginning balance 238 1,296 312 1,277
Charge-offs 0 0 0 0
Recoveries 6 2 12 5
Provision for (Recapture of) Credit Losses (4) (510) (84) (494)
Ending balance 240 788 240 788
SBA [Member]        
Financing Receivable, Allowance for Credit Losses [Line Items]        
Beginning balance 2,608 2,531 2,629 2,679
Charge-offs (32) (49) (51) (139)
Recoveries 19 18 41 81
Provision for (Recapture of) Credit Losses 471 (4) 447 (125)
Ending balance 3,066 2,496 3,066 2,496
Commercial and Industrial [Member]        
Financing Receivable, Allowance for Credit Losses [Line Items]        
Beginning balance 6,118 5,059 6,093 9,116
Charge-offs (392) 0 (413) (1,917)
Recoveries 155 0 297 176
Provision for (Recapture of) Credit Losses 476 44 380 (2,272)
Ending balance 6,357 5,103 6,357 5,103
Dairy & Livestock and Agribusiness [Member]        
Financing Receivable, Allowance for Credit Losses [Line Items]        
Beginning balance 2,824 3,252 3,610 3,098
Charge-offs 0 0 0 0
Recoveries 0 0 0 0
Provision for (Recapture of) Credit Losses (270) 523 (1,056) 677
Ending balance 2,554 3,775 2,554 3,775
Municipal Lease Finance Receivables [Member]        
Financing Receivable, Allowance for Credit Losses [Line Items]        
Beginning balance 210 194 205 210
Charge-offs 0 0 0 0
Recoveries 0 0 0 0
Provision for (Recapture of) Credit Losses 10 (8) 15 (24)
Ending balance 220 186 220 186
SFR Mortgage [Member]        
Financing Receivable, Allowance for Credit Losses [Line Items]        
Beginning balance 427 483 424 535
Charge-offs 0 0 0 0
Recoveries 0 0 0 0
Provision for (Recapture of) Credit Losses 50 15 53 (37)
Ending balance 477 498 477 498
Consumer and Other Loans [Member]        
Financing Receivable, Allowance for Credit Losses [Line Items]        
Beginning balance 525 557 612 461
Charge-offs (5) (2) (5) (4)
Recoveries 0 0 0 0
Provision for (Recapture of) Credit Losses 27 (20) (60) 78
Ending balance $ 547 $ 535 $ 547 $ 535