Loans and Allowance for Credit Losses - Summary of Gross Charge Offs (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Financing Receivable, Past Due [Line Items]
2025	$ 11	$ 139	$ 11	$ 139
2024	4,937	5,607	8,488	10,894
2023	5,620	6,643	10,830	15,141
2022	5,500	2,497	11,269	7,157
2021	2,749	1,105	5,110	2,681
Prior	2,407	2,699	10,162	5,677
Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Write off1, Total	21,224	18,690	45,870	41,689
Recreation [Member]
Financing Receivable, Past Due [Line Items]
2025	11	99	11	99
2024	3,812	4,099	6,540	7,862
2023	3,917	5,049	7,624	11,867
2022	4,439	1,990	8,945	5,487
2021	2,106	986	4,039	2,275
Prior	1,988	2,404	9,388	5,138
Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Write off1, Total	16,273	14,627	36,547	32,728
Home Improvement [Member]
Financing Receivable, Past Due [Line Items]
2025	0	40	0	40
2024	1,125	1,508	1,948	3,032
2023	1,703	1,594	3,206	3,274
2022	1,061	507	2,194	1,670
2021	643	119	1,071	406
Prior	419	295	759	539
Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Write off1, Total	4,951	4,063	9,178	8,961
Commercial Loan [Member]
Financing Receivable, Past Due [Line Items]
2025	0	0	0	0
2024	0	0	0	0
2023	0	0	0	0
2022	0	0	130	0
2021	0	0	0	0
Prior	0	0	0	0
Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Write off1, Total	0	0	130	0
Taxi Medallion [Member]
Financing Receivable, Past Due [Line Items]
2025	0	0	0	0
2024	0	0	0	0
2023	0	0	0	0
2022	0	0	0	0
2021	0	0	0	0
Prior	0	0	15	0
Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Write off1, Total	$ 0	$ 0	$ 15	$ 0