Summary of Significant Accounting Policies - Additional Information (Detail) |
1 Months Ended | 3 Months Ended | 6 Months Ended | ||||
|---|---|---|---|---|---|---|---|
|
Jul. 22, 2025
shares
|
Jun. 30, 2026
USD ($)
shares
|
Jun. 30, 2025
shares
|
Jun. 30, 2026
USD ($)
Location
shares
|
Jun. 30, 2025
shares
|
Jul. 28, 2026
shares
|
Dec. 31, 2025
USD ($)
|
|
| Equity, Class of Treasury Stock [Line Items] | |||||||
| Number of locations | Location | 79 | ||||||
| Minimum number of shares that company is required to repurchase | 0 | ||||||
| First financial antidilutive securities excluded from eps computation | 813,000 | 360,000 | 822,000 | 364,000 | |||
| Commitments to Extend Credit [Member] | |||||||
| Equity, Class of Treasury Stock [Line Items] | |||||||
| Reserve for unfunded commitments | $ | $ 6,208,000 | $ 6,208,000 | $ 6,387,000 | ||||
| Maximum [Member] | |||||||
| Equity, Class of Treasury Stock [Line Items] | |||||||
| Stock repurchase program, number of shares authorized to be repurchased | 5,000,000 | 7,200,000 | |||||