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v3.21.2

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, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Loss before benefit for income taxes | $ (672) | $ 3,517 | $ (4,543) | $ 1,327
Benefit for income taxes | (180) | 773 | (925) | 401
Net loss | (492) | 2,744 | (3,618) | 926
Reclassifications Out of Accumulated Other Comprehensive Loss [Member] | Amortization of Actuarial Loss [Member] |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Loss before benefit for income taxes | (236) | (267) | (455) | (533)
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 | (53) | (63) | (102) | (124)
Net loss | $ (183) | $ (204) | $ (353) | $ (409)

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