v3.26.1
Allowance for Credit Losses - Schedule of Accruing and Nonaccrual Modified Loans (Details) - USD ($)
$ in Thousands
Mar. 31, 2026
Mar. 31, 2025
Financing Receivable, Allowance for Credit Loss [Line Items]    
Modified loans to borrowers experiencing financial difficulty, modified in the last 12 months $ 31,444 $ 20,026
Current    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Modified loans to borrowers experiencing financial difficulty, modified in the last 12 months 20,441 8,659
30-59 days past due    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Modified loans to borrowers experiencing financial difficulty, modified in the last 12 months 0 0
60-89 days past due    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Modified loans to borrowers experiencing financial difficulty, modified in the last 12 months 0 959
90+ days past due and still accruing    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Modified loans to borrowers experiencing financial difficulty, modified in the last 12 months 0 0
Nonaccrual    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Modified loans to borrowers experiencing financial difficulty, modified in the last 12 months 11,003 10,408
Real estate loan | Commercial mortgage    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Modified loans to borrowers experiencing financial difficulty, modified in the last 12 months 8,574 2,347
Real estate loan | Commercial mortgage | Current    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Modified loans to borrowers experiencing financial difficulty, modified in the last 12 months 4,245 1,388
Real estate loan | Commercial mortgage | 30-59 days past due    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Modified loans to borrowers experiencing financial difficulty, modified in the last 12 months 0 0
Real estate loan | Commercial mortgage | 60-89 days past due    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Modified loans to borrowers experiencing financial difficulty, modified in the last 12 months 0 959
Real estate loan | Commercial mortgage | 90+ days past due and still accruing    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Modified loans to borrowers experiencing financial difficulty, modified in the last 12 months 0 0
Real estate loan | Commercial mortgage | Nonaccrual    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Modified loans to borrowers experiencing financial difficulty, modified in the last 12 months 4,330 0
Real estate loan | Residential mortgage    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Modified loans to borrowers experiencing financial difficulty, modified in the last 12 months 1,126 545
Real estate loan | Residential mortgage | Current    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Modified loans to borrowers experiencing financial difficulty, modified in the last 12 months 529 0
Real estate loan | Residential mortgage | 30-59 days past due    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Modified loans to borrowers experiencing financial difficulty, modified in the last 12 months 0 0
Real estate loan | Residential mortgage | 60-89 days past due    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Modified loans to borrowers experiencing financial difficulty, modified in the last 12 months 0 0
Real estate loan | Residential mortgage | 90+ days past due and still accruing    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Modified loans to borrowers experiencing financial difficulty, modified in the last 12 months 0 0
Real estate loan | Residential mortgage | Nonaccrual    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Modified loans to borrowers experiencing financial difficulty, modified in the last 12 months 597 545
Real estate loan | Construction    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Modified loans to borrowers experiencing financial difficulty, modified in the last 12 months 15,648 7,632
Real estate loan | Construction | Current    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Modified loans to borrowers experiencing financial difficulty, modified in the last 12 months 14,265 2,869
Real estate loan | Construction | 30-59 days past due    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Modified loans to borrowers experiencing financial difficulty, modified in the last 12 months 0 0
Real estate loan | Construction | 60-89 days past due    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Modified loans to borrowers experiencing financial difficulty, modified in the last 12 months 0 0
Real estate loan | Construction | 90+ days past due and still accruing    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Modified loans to borrowers experiencing financial difficulty, modified in the last 12 months 0 0
Real estate loan | Construction | Nonaccrual    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Modified loans to borrowers experiencing financial difficulty, modified in the last 12 months 1,383 4,763
Commercial, industrial & other finance receivables    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Modified loans to borrowers experiencing financial difficulty, modified in the last 12 months   4,669
Commercial, industrial & other finance receivables | Current    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Modified loans to borrowers experiencing financial difficulty, modified in the last 12 months   1,897
Commercial, industrial & other finance receivables | 30-59 days past due    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Modified loans to borrowers experiencing financial difficulty, modified in the last 12 months   0
Commercial, industrial & other finance receivables | 60-89 days past due    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Modified loans to borrowers experiencing financial difficulty, modified in the last 12 months   0
Commercial, industrial & other finance receivables | 90+ days past due and still accruing    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Modified loans to borrowers experiencing financial difficulty, modified in the last 12 months   0
Commercial, industrial & other finance receivables | Nonaccrual    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Modified loans to borrowers experiencing financial difficulty, modified in the last 12 months   2,772
Small business loans    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Modified loans to borrowers experiencing financial difficulty, modified in the last 12 months 5,003 4,833
Small business loans | Current    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Modified loans to borrowers experiencing financial difficulty, modified in the last 12 months 1,402 2,505
Small business loans | 30-59 days past due    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Modified loans to borrowers experiencing financial difficulty, modified in the last 12 months 0 0
Small business loans | 60-89 days past due    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Modified loans to borrowers experiencing financial difficulty, modified in the last 12 months 0 0
Small business loans | 90+ days past due and still accruing    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Modified loans to borrowers experiencing financial difficulty, modified in the last 12 months 0 0
Small business loans | Nonaccrual    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Modified loans to borrowers experiencing financial difficulty, modified in the last 12 months 3,601 $ 2,328
Leases, net    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Modified loans to borrowers experiencing financial difficulty, modified in the last 12 months 242  
Leases, net | Current    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Modified loans to borrowers experiencing financial difficulty, modified in the last 12 months 0  
Leases, net | 30-59 days past due    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Modified loans to borrowers experiencing financial difficulty, modified in the last 12 months 0  
Leases, net | 60-89 days past due    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Modified loans to borrowers experiencing financial difficulty, modified in the last 12 months 0  
Leases, net | 90+ days past due and still accruing    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Modified loans to borrowers experiencing financial difficulty, modified in the last 12 months 0  
Leases, net | Nonaccrual    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Modified loans to borrowers experiencing financial difficulty, modified in the last 12 months $ 242