Quarterly report pursuant to Section 13 or 15(d)

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

v3.23.3
Changes in Accumulated Other Comprehensive Loss - Reclassifications Out of Accumulated Other Comprehensive Loss by Component (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Income (loss) before provision for income taxes $ 654 $ (236) $ 4,060 $ 655
Benefit for income taxes 243 (40) 1,009 175
Net income (loss) 411 (196) 3,051 480
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 (loss) before provision for income taxes [1] 210 168 421 336
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]        
Benefit for income taxes 46 37 93 74
Net income (loss) $ 164 $ 131 $ 328 $ 262
[1] These accumulated other comprehensive loss components are included within the computation of pension and other postretirement benefit costs.