v3.25.2
Changes in Accumulated Other Comprehensive Loss - Reclassifications Out of Accumulated Other Comprehensive Loss by Component (Detail) - USD ($)
$ in Thousands
3 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Income before benefit for income taxes $ 5,013 $ 3,294
Provision for income taxes 418 328
Net Income (Loss) 4,595 2,966
Reclassifications Out of Accumulated Other Comprehensive Loss [Member] | Amortization of Actuarial income (loss) [Member]    
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Income before benefit for income taxes [1] 210 195
Reclassifications Out of Accumulated Other Comprehensive Loss [Member] | Pension and Other Postretirement Benefits Items [Member]    
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Provision for income taxes 48 45
Net Income (Loss) $ 162 $ 150
[1] These accumulated other comprehensive loss components are included within the computation of pension and other postretirement benefit costs.