Loans and Allowance for Credit Losses - Summary of Gross Charge Offs (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Financing Receivable, Past Due [Line Items]
2024	$ 139	$ 83	$ 139	$ 83
2023	5,607	5,116	10,894	9,628
2022	6,643	2,817	15,141	6,515
2021	2,497	943	7,157	2,757
2020	1,105	1,909	2,681	3,594
Prior	2,699	1,994	5,677	8,382
Total	18,690	12,862	41,689	30,959
Recreation [Member]
Financing Receivable, Past Due [Line Items]
2024	99	44	99	44
2023	4,099	3,568	7,862	7,176
2022	5,049	2,344	11,867	5,414
2021	1,990	785	5,487	2,456
2020	986	918	2,275	2,472
Prior	2,404	1,507	5,138	4,194
Total	14,627	9,166	32,728	21,756
Home Improvement [Member]
Financing Receivable, Past Due [Line Items]
2024	40	39	40	39
2023	1,508	1,548	3,032	2,452
2022	1,594	473	3,274	1,101
2021	507	158	1,670	301
2020	119	91	406	222
Prior	295	266	539	374
Total	4,063	2,575	8,961	4,489
Commercial Loan [Member]
Financing Receivable, Past Due [Line Items]
2024	0	0	0	0
2023	0	0	0
2022	0	0	0	0
2021	0	0	0	0
2020	0	900	0	900
Prior	0	0	0	0
Total	0	900	0	900
Taxi Medallion [Member]
Financing Receivable, Past Due [Line Items]
2024	0	0	0	0
2023	0	0	0	0
2022	0	0	0	0
2021	0	0	0	0
2020	0	0	0	0
Prior	0	221	0	3,814
Total	$ 0	$ 221	$ 0	$ 3,814

Financing receivable excluding accrued interest allowance for credit loss write off1.

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-6

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- Definition

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

+ References

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- Definition

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

+ References

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- Definition

Amount, excluding accrued interest, of writeoff of financing receivable originated in current fiscal year. Excludes net investment in lease.

+ References

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- Definition

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

+ References

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- Definition

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

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 14
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-14

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 80
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479294/326-20-55-80

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