v3.26.1
Loans and Allowance for Credit Losses - Summary of Performance Status of Loans and Loans Held for Sale (Detail) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2026
Dec. 31, 2025
Mar. 31, 2025
Financing Receivable, Recorded Investment [Line Items]      
Status of loans $ 2,607,209 $ 2,551,705  
Net loans $ 2,617,995 [1] $ 2,566,849 $ 2,486,433
Percentage of Nonperforming to Total 1.41% 1.59%  
Performing [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Net loans $ 2,581,101 $ 2,526,009  
Non - Performing [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Net loans 36,894 40,840  
Recreation [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Status of loans $ 1,671,538 $ 1,617,221  
Percentage of Nonperforming to Total 0.60% 0.85%  
Recreation [Member] | Performing [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Status of loans $ 1,661,437 $ 1,603,542  
Recreation [Member] | Non - Performing [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Status of loans 10,101 13,679  
Home Improvement [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Status of loans $ 814,933 $ 810,237  
Percentage of Nonperforming to Total 0.17% 0.16%  
Home Improvement [Member] | Performing [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Status of loans $ 813,533 $ 808,943  
Home Improvement [Member] | Non - Performing [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Status of loans 1,400 1,294  
Commercial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Status of loans $ 119,612 $ 123,068  
Percentage of Nonperforming to Total 20.29% 20.06%  
Commercial [Member] | Performing [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Status of loans $ 95,345 $ 98,380  
Commercial [Member] | Non - Performing [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Status of loans 24,267 24,688  
Taxi Medallion [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Status of loans $ 1,126 $ 1,179  
Percentage of Nonperforming to Total 100.00% 100.00%  
Taxi Medallion [Member] | Performing [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Status of loans $ 0 $ 0  
Taxi Medallion [Member] | Non - Performing [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Status of loans 1,126 1,179  
Strategic Partnership [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Status of loans $ 10,786 $ 15,144  
Percentage of Nonperforming to Total 0.00% 0.00%  
Strategic Partnership [Member] | Performing [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Status of loans $ 10,786 $ 15,144  
Strategic Partnership [Member] | Non - Performing [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Status of loans $ 0 $ 0  
[1] Inclusive of strategic partnership loans held for sale, at lower of amortized cost or fair value.