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)

v3.24.0.1
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, 2023
Sep. 30, 2023
Dec. 31, 2022
Dec. 31, 2023
Dec. 31, 2022
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]          
Income (loss) before benefit for income taxes $ 55   $ 438 $ 4,115 $ 1,093
Benefit for income taxes (110)   70 899 245
Net income (loss) 165   368 3,216 848
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 benefit for income taxes [1] 211   169 632 505
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 47 $ 38   140 112
Net income (loss) $ 164   $ 131 $ 492 $ 393
[1] These accumulated other comprehensive loss components are included within the computation of pension and other postretirement benefit costs.