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Changes in Accumulated Other Comprehensive Loss - Changes in Accumulated Other Comprehensive Loss by Component (Detail) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Jun. 30, 2022 | Jun. 30, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |
Beginning balance | $ 96,494 | $ 97,929
Other comprehensive income before reclassifications | (343) | 128
Amounts reclassified from accumulated other comprehensive loss | 131 | 170
Total other comprehensive (loss) income | (212) | 298
Ending Balance | 97,051 | 103,200
Pension and Other Postretirement Benefits Items [Member] |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |
Beginning balance | (6,970) | (7,698)
Other comprehensive income before reclassifications | 0 | 0
Amounts reclassified from accumulated other comprehensive loss | 131 | 170
Total other comprehensive (loss) income | 131 | 170
Ending Balance | (6,839) | (7,528)
Foreign Currency Items [Member] |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |
Beginning balance | 499 | 301
Other comprehensive income before reclassifications | (343) | 128
Amounts reclassified from accumulated other comprehensive loss | 0 | 0
Total other comprehensive (loss) income | (343) | 128
Ending Balance | 156 | 429
Accumulated Other Comprehensive Loss [Member] |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |
Beginning balance | (6,471) | (7,397)
Ending Balance | $ (6,683) | $ (7,099)

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