Quarterly report [Sections 13 or 15(d)]

Changes in Accumulated Other Comprehensive Loss - Reclassifications Out of Accumulated Other Comprehensive Loss by Component (Detail)

v3.25.4
Changes in Accumulated Other Comprehensive Loss - Reclassifications Out of Accumulated Other Comprehensive Loss by Component (Detail) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2025
Dec. 31, 2024
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Income before provision for income taxes $ 3,203 $ 2,247 $ 12,439 $ 9,838
Provision for income taxes 358 659 1,909 2,003
Net Income (Loss) 2,845 1,588 10,530 7,835
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 provision for income taxes [1] 210 196 630 586
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 49 45 146 135
Net Income (Loss) $ 161 $ 151 $ 484 $ 451
[1] These accumulated other comprehensive loss components are included within the computation of pension and other postretirement benefit costs.