Accumulated Other Comprehensive Loss - Additional Information (Detail) |
12 Months Ended |
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Mar. 31, 2018
USD ($)
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| Statement of Comprehensive Income [Abstract] | |
| Reclassifications out of Accumulated other comprehensive loss | $ 0 |
| X | ||||||||||
- Definition Amount after tax of reclassification adjustments of other comprehensive income (loss) attributable to parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- References No definition available.
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