Loans and Allowance for Credit Losses - Schedule of Loan Delinquency for Recreation and Home Improvement Loans (Detail) - USD ($) $ in Thousands |
Jun. 30, 2026 |
Dec. 31, 2025 |
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|---|---|---|---|---|---|---|---|---|
| Recreation [Member] | ||||||||
| Financing Receivable, Past Due [Line Items] | ||||||||
| 2026 | $ 356,773 | |||||||
| 2025 | 401,315 | $ 435,498 | ||||||
| 2024 | 273,936 | 356,392 | ||||||
| 2023 | 225,831 | 256,680 | ||||||
| 2022 | 198,208 | 227,028 | ||||||
| 2021 | 142,693 | |||||||
| Prior | 243,828 | 143,810 | ||||||
| Total | 1,699,891 | [1] | 1,562,101 | [2] | ||||
| Recreation [Member] | Current | ||||||||
| Financing Receivable, Past Due [Line Items] | ||||||||
| 2026 | 354,614 | |||||||
| 2025 | 384,820 | 423,427 | ||||||
| 2024 | 258,354 | 335,079 | ||||||
| 2023 | 211,789 | 237,917 | ||||||
| 2022 | 185,249 | 209,204 | ||||||
| 2021 | 132,704 | |||||||
| Prior | 226,626 | 131,113 | ||||||
| Total | 1,621,452 | [1] | 1,469,444 | [2] | ||||
| Recreation [Member] | 30-59 [Member] | ||||||||
| Financing Receivable, Past Due [Line Items] | ||||||||
| 2026 | 1,262 | |||||||
| 2025 | 9,668 | 8,210 | ||||||
| 2024 | 9,159 | 12,763 | ||||||
| 2023 | 8,646 | 11,042 | ||||||
| 2022 | 8,224 | 10,623 | ||||||
| 2021 | 6,061 | |||||||
| Prior | 10,693 | 8,212 | ||||||
| Total | 47,652 | [1] | 56,911 | [2] | ||||
| Recreation [Member] | 60-89 [Member] | ||||||||
| Financing Receivable, Past Due [Line Items] | ||||||||
| 2026 | 741 | |||||||
| 2025 | 4,744 | 2,374 | ||||||
| 2024 | 4,130 | 5,414 | ||||||
| 2023 | 3,398 | 4,918 | ||||||
| 2022 | 3,285 | 4,872 | ||||||
| 2021 | 2,581 | |||||||
| Prior | 4,763 | 2,731 | ||||||
| Total | 21,061 | [1] | 22,890 | [2] | ||||
| Recreation [Member] | 90+ [Member] | ||||||||
| Financing Receivable, Past Due [Line Items] | ||||||||
| 2026 | 156 | |||||||
| 2025 | 2,083 | 1,487 | ||||||
| 2024 | 2,293 | 3,136 | ||||||
| 2023 | 1,998 | 2,803 | ||||||
| 2022 | 1,450 | 2,329 | ||||||
| 2021 | 1,347 | |||||||
| Prior | 1,746 | 1,754 | ||||||
| Total | 9,726 | [1] | 12,856 | [2] | ||||
| Home Improvement [Member] | ||||||||
| Financing Receivable, Past Due [Line Items] | ||||||||
| 2026 | 182,951 | |||||||
| 2025 | 161,720 | 194,852 | ||||||
| 2024 | 149,178 | 174,886 | ||||||
| 2023 | 136,491 | 154,104 | ||||||
| 2022 | 137,215 | 153,027 | ||||||
| 2021 | 72,566 | |||||||
| Prior | 118,492 | 63,750 | ||||||
| Total | 886,047 | [1] | 813,185 | [2] | ||||
| Home Improvement [Member] | Current | ||||||||
| Financing Receivable, Past Due [Line Items] | ||||||||
| 2026 | 182,684 | |||||||
| 2025 | 160,187 | 193,964 | ||||||
| 2024 | 147,903 | 172,735 | ||||||
| 2023 | 134,042 | 151,637 | ||||||
| 2022 | 134,755 | 151,365 | ||||||
| 2021 | 71,812 | |||||||
| Prior | 117,243 | 63,114 | ||||||
| Total | 876,814 | [1] | 804,627 | [2] | ||||
| Home Improvement [Member] | 30-59 [Member] | ||||||||
| Financing Receivable, Past Due [Line Items] | ||||||||
| 2026 | 142 | |||||||
| 2025 | 906 | 535 | ||||||
| 2024 | 665 | 980 | ||||||
| 2023 | 1,431 | 1,609 | ||||||
| 2022 | 1,425 | 876 | ||||||
| 2021 | 513 | |||||||
| Prior | 727 | 378 | ||||||
| Total | 5,296 | [1] | 4,891 | [2] | ||||
| Home Improvement [Member] | 60-89 [Member] | ||||||||
| Financing Receivable, Past Due [Line Items] | ||||||||
| 2026 | 46 | |||||||
| 2025 | 471 | 353 | ||||||
| 2024 | 437 | 761 | ||||||
| 2023 | 550 | 441 | ||||||
| 2022 | 619 | 455 | ||||||
| 2021 | 199 | |||||||
| Prior | 315 | 158 | ||||||
| Total | 2,438 | [1] | 2,367 | [2] | ||||
| Home Improvement [Member] | 90+ [Member] | ||||||||
| Financing Receivable, Past Due [Line Items] | ||||||||
| 2026 | 79 | |||||||
| 2025 | 156 | 0 | ||||||
| 2024 | 173 | 410 | ||||||
| 2023 | 468 | 417 | ||||||
| 2022 | 416 | 331 | ||||||
| 2021 | 42 | |||||||
| Prior | 207 | 100 | ||||||
| Total | $ 1,499 | [1] | $ 1,300 | [2] | ||||
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