Consolidated Statements of Comprehensive (Loss) Income (Parenthetical) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Mar. 31, 2018 |
Mar. 31, 2017 |
Mar. 31, 2016 |
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| Statement Of Income And Comprehensive Income [Abstract] | |||
| Defined benefit pension and other postretirement plans, tax provision (benefit) | $ 476 | $ 1,364 | $ (804) |
| X | ||||||||||
- Definition Amount, after reclassification adjustment, of tax (expense) benefit for (increase) decrease in accumulated other comprehensive income of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- References No definition available.
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