Segment Reporting - Schedule of Segment Data (Parenthetical) (Detail)	3 Months Ended				6 Months Ended
	Jun. 30, 2025		Jun. 30, 2024	[2]	Jun. 30, 2025		Jun. 30, 2024	[4]
Segment Reporting Disclosure [Line Items]
Charge-off ratio	2.44%	[1]	2.20%		2.77%	[3]	2.68%
Recreation [Member] | Operating Segments [Member]
Segment Reporting Disclosure [Line Items]
Charge-off ratio	3.11%				3.71%

[1] Charge-off ratio in the recreation lending segment was 3.11% when including loans held for sale.

[2] Net charge-offs as a percent of annual average total gross loans.

[3] Charge-off ratio in the recreation lending segment was 3.71% when including loans held for sale.

[4] Net charge-offs as a percent of annual average total gross loans.