Mortgage Loan Participation Purchase and Sale Agreement - Summary of Mortgage Loan Participation Purchase and Sale Agreement (Detail) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
Dec. 31, 2024 |
|
| At period end: | |||||
| Mortgage loan participation purchase and sale agreements | $ 8,413 | $ 8,413 | $ 11,593 | ||
| Mortgage Loan Participation Purchase and Sale Agreement [Member] | |||||
| Mortgage Loan Participation Purchase And Sale Agreement [Line Items] | |||||
| Weighted average interest rate | 5.66% | 6.72% | 5.67% | 6.75% | |
| Average balance | $ 9,666 | $ 11,255 | $ 9,162 | $ 11,993 | |
| Total interest expense | 168 | 219 | 320 | 465 | |
| Maximum daily amount outstanding | 25,809 | $ 56,423 | 49,266 | $ 56,423 | |
| At period end: | |||||
| Amount outstanding | 8,533 | 8,533 | 11,650 | ||
| Unamortized debt issuance costs | (120) | (120) | (57) | ||
| Mortgage loan participation purchase and sale agreements | 8,413 | $ 8,413 | $ 11,593 | ||
| Weighted average interest rate | 5.57% | 5.58% | |||
| Loans acquired for sale pledged to secure | $ 8,853 | $ 8,853 | $ 12,142 | ||