Loans and Allowance for Credit Losses - Summary of Gross Charge Offs (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Financing Receivable, Past Due [Line Items]
2026	$ 209	$ 11	$ 209	$ 11
2025	3,970	4,937	8,054	8,488
2024	4,680	5,620	11,213	10,830
2023	4,916	5,500	10,745	11,269
2022	4,024	2,749	8,950	5,110
Prior	4,945	2,407	10,453	10,162
Total	22,744	21,224	49,624	45,870
Recreation [Member]
Financing Receivable, Past Due [Line Items]
2026	112	11	112	11
2025	3,570	3,812	7,255	6,540
2024	3,872	3,917	9,489	7,624
2023	3,651	4,439	8,152	8,945
2022	3,185	2,106	7,159	4,039
Prior	4,115	1,988	8,829	9,388
Total	18,505	16,273	40,996	36,547
Home Improvement [Member]
Financing Receivable, Past Due [Line Items]
2026	97	0	97	0
2025	400	1,125	799	1,948
2024	808	1,703	1,724	3,206
2023	1,265	1,061	2,593	2,194
2022	839	643	1,791	1,071
Prior	756	419	1,512	759
Total	4,165	4,951	8,516	9,178
Commercial Loan [Member]
Financing Receivable, Past Due [Line Items]
2026	0	0	0	0
2025	0	0	0	0
2024	0	0	0	0
2023	0	0	0	130
2022	0	0	0	0
Prior	74	0	74	0
Total	74	0	74	130
Taxi Medallion [Member]
Financing Receivable, Past Due [Line Items]
2026	0	0	0	0
2025	0	0	0	0
2024	0	0	0	0
2023	0	0	0	0
2022	0	0	0	0
Prior	0	0	38	15
Total	$ 0	$ 0	$ 38	$ 15

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Amount, excluding accrued interest, of writeoff of financing receivable originated more than five years before current fiscal year. Excludes net investment in lease.

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