Annual report pursuant to Section 13 and 15(d)

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

v3.23.1
Changes in Accumulated Other Comprehensive Loss - Reclassifications Out of Accumulated Other Comprehensive Loss by Component (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Mar. 31, 2021
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Income before provision for income taxes $ 561 $ (11,216) $ 3,267
Provision (benefit) for income taxes 194 (2,443) 893
Net (loss) income 367 (8,773) $ 2,374
Reclassifications Out of Accumulated Other Comprehensive Loss [Member] | Amortization of Actuarial Loss [Member]      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Income before provision for income taxes [1] (672) (996)  
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]      
Income before provision for income taxes (672) (996)  
Provision (benefit) for income taxes (149) (221)  
Net (loss) income $ (523) $ (775)  
[1] These accumulated other comprehensive loss components are included within the computation of net periodic pension and other postretirement benefit costs. See Note 11.