v3.25.2
Loans and Lease Finance Receivables and Allowance for Credit Losses - Schedule of Recorded Investment in, and Aging of, Past Due and Nonaccrual Loans, Including PCI Loans by Class of Loans (Detail) - USD ($)
$ in Thousands
Jun. 30, 2025
Dec. 31, 2024
Jun. 30, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Past Due $ 27,942 $ 26,842  
Current 8,358,501 8,536,432  
Total Loans and Financing Receivables 8,358,501 8,536,432  
Nonaccrual with No Allowance for Credit Losses 25,245 27,273  
Total Nonaccrual 25,969 [1],[2] 27,795 [3]  
Loans Past Due Over 89 Days Still Accruing 0 0  
30-59 Days Past Due [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Past Due 3,419 399  
Total Nonaccrual   102,000  
60-89 Days Past Due [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Past Due 0 190  
Greater than 89 Days Past Due [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Past Due 24,523 26,253  
Total Nonaccrual   26,300 $ 24,500
Financial Asset Not Past Due [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Current 8,330,559 8,509,590  
Commercial Real Estate Owner Occupied [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Past Due 0 196  
Total Loans and Financing Receivables 2,289,898 2,329,576  
Nonaccrual with No Allowance for Credit Losses 672 1,436  
Total Nonaccrual 672 [1],[2] 1,436 [3]  
Loans Past Due Over 89 Days Still Accruing 0 0  
Commercial Real Estate Owner Occupied [Member] | 30-59 Days Past Due [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Past Due 0 0  
Commercial Real Estate Owner Occupied [Member] | 60-89 Days Past Due [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Past Due 0 0  
Commercial Real Estate Owner Occupied [Member] | Greater than 89 Days Past Due [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Past Due 0 196  
Commercial Real Estate Owner Occupied [Member] | Financial Asset Not Past Due [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Current 2,289,898 2,329,380  
Commercial Real Estate Non-owner Occupied [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Past Due 23,707 24,430  
Total Loans and Financing Receivables 4,227,517 4,177,876  
Nonaccrual with No Allowance for Credit Losses 23,707 24,430  
Total Nonaccrual 23,707 [1],[2] 24,430 [3]  
Loans Past Due Over 89 Days Still Accruing 0 0  
Commercial Real Estate Non-owner Occupied [Member] | 30-59 Days Past Due [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Past Due 0 0  
Commercial Real Estate Non-owner Occupied [Member] | 60-89 Days Past Due [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Past Due 0 0  
Commercial Real Estate Non-owner Occupied [Member] | Greater than 89 Days Past Due [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Past Due 23,707 24,430  
Commercial Real Estate Non-owner Occupied [Member] | Financial Asset Not Past Due [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Current 4,203,810 4,153,446  
Construction Speculative [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Past Due 0 [4] 0 [5]  
Total Loans and Financing Receivables 9,261 [4] 8,091 [5]  
Construction Speculative [Member] | 30-59 Days Past Due [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Past Due 0 [4] 0 [5]  
Construction Speculative [Member] | 60-89 Days Past Due [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Past Due 0 [4] 0 [5]  
Construction Speculative [Member] | Greater than 89 Days Past Due [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Past Due 0 [4] 0 [5]  
Construction Speculative [Member] | Financial Asset Not Past Due [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Current 9,261 [4] 8,091 [5]  
Construction Non-speculative [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Past Due 0 0  
Total Loans and Financing Receivables 8,397 7,991  
Construction Non-speculative [Member] | 30-59 Days Past Due [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Past Due 0 0  
Construction Non-speculative [Member] | 60-89 Days Past Due [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Past Due 0 0  
Construction Non-speculative [Member] | Greater than 89 Days Past Due [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Past Due 0 0  
Construction Non-speculative [Member] | Financial Asset Not Past Due [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Current 8,397 7,991  
SBA [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Past Due 4,070 1,617  
Total Loans and Financing Receivables 271,735 273,013  
Nonaccrual with No Allowance for Credit Losses 645 1,146  
Total Nonaccrual 1,265 [1],[2] 1,529 [3]  
Loans Past Due Over 89 Days Still Accruing 0 0  
SBA [Member] | 30-59 Days Past Due [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Past Due 3,419 0  
SBA [Member] | 60-89 Days Past Due [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Past Due 0 190  
SBA [Member] | Greater than 89 Days Past Due [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Past Due 651 1,427  
SBA [Member] | Financial Asset Not Past Due [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Current 267,665 271,396  
SBA - Paycheck Protection Program (PPP) [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Past Due 0 0  
Current 85 774  
Total Loans and Financing Receivables 85 774  
Nonaccrual with No Allowance for Credit Losses 0 0  
Total Nonaccrual 0 [1],[2] 0 [3]  
Loans Past Due Over 89 Days Still Accruing 0 0  
SBA - Paycheck Protection Program (PPP) [Member] | 30-59 Days Past Due [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Past Due 0 0  
SBA - Paycheck Protection Program (PPP) [Member] | 60-89 Days Past Due [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Past Due 0 0  
SBA - Paycheck Protection Program (PPP) [Member] | Greater than 89 Days Past Due [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Past Due 0 0  
SBA - Paycheck Protection Program (PPP) [Member] | Financial Asset Not Past Due [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Current 85 774  
Commercial and Industrial [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Past Due 105 539  
Total Loans and Financing Receivables 912,427 925,178  
Nonaccrual with No Allowance for Credit Losses 161 201  
Total Nonaccrual 265 [1],[2] 340 [3]  
Loans Past Due Over 89 Days Still Accruing 0 0  
Commercial and Industrial [Member] | 30-59 Days Past Due [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Past Due 0 399  
Commercial and Industrial [Member] | 60-89 Days Past Due [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Past Due 0 0  
Commercial and Industrial [Member] | Greater than 89 Days Past Due [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Past Due 105 140  
Commercial and Industrial [Member] | Financial Asset Not Past Due [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Current 912,322 924,639  
Dairy & Livestock and Agribusiness [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Past Due 60 60  
Total Loans and Financing Receivables 233,772 419,904  
Nonaccrual with No Allowance for Credit Losses 60 60  
Total Nonaccrual 60 [1],[2] 60 [3]  
Loans Past Due Over 89 Days Still Accruing 0 0  
Dairy & Livestock and Agribusiness [Member] | 30-59 Days Past Due [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Past Due 0 0  
Dairy & Livestock and Agribusiness [Member] | 60-89 Days Past Due [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Past Due 0 0  
Dairy & Livestock and Agribusiness [Member] | Greater than 89 Days Past Due [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Past Due 60 60  
Dairy & Livestock and Agribusiness [Member] | Financial Asset Not Past Due [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Current 233,712 419,844  
Municipal Lease Finance Receivables [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Past Due 0 0  
Current 63,652 66,114  
Total Loans and Financing Receivables 63,652 66,114  
Municipal Lease Finance Receivables [Member] | 30-59 Days Past Due [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Past Due 0 0  
Municipal Lease Finance Receivables [Member] | 60-89 Days Past Due [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Past Due 0 0  
Municipal Lease Finance Receivables [Member] | Greater than 89 Days Past Due [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Past Due 0 0  
Municipal Lease Finance Receivables [Member] | Financial Asset Not Past Due [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Current 63,652 66,114  
SFR Mortgage [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Past Due 0 0  
Total Loans and Financing Receivables 288,435 269,172  
SFR Mortgage [Member] | 30-59 Days Past Due [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Past Due 0 0  
SFR Mortgage [Member] | 60-89 Days Past Due [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Past Due 0 0  
SFR Mortgage [Member] | Greater than 89 Days Past Due [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Past Due 0 0  
SFR Mortgage [Member] | Financial Asset Not Past Due [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Current 288,435 269,172  
Consumer and Other Loans [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Past Due 0 0  
Total Loans and Financing Receivables 53,322 58,743  
Consumer and Other Loans [Member] | 30-59 Days Past Due [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Past Due 0 0  
Consumer and Other Loans [Member] | 60-89 Days Past Due [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Past Due 0 0  
Consumer and Other Loans [Member] | Greater than 89 Days Past Due [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Past Due 0 0  
Consumer and Other Loans [Member] | Financial Asset Not Past Due [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Current $ 53,322 $ 58,743  
[1] As of June 30, 2025, $1.4 million of nonaccruing loans were current, $24.5 million were 90+ days past due.
[2] Excludes $3,000 of guaranteed portion of nonaccrual SBA loans that are in process of collection.
[3] As of December 31, 2024, $1.4 million of nonaccruing loans were current, $102,000 were 60-89 days past due, and $26.3 million were 90+ days past due.
[4] Speculative construction loans are generally for properties where there is no identified buyer or renter.
[5] Speculative construction loans are generally for properties where there is no identified buyer or renter.