Inventories - Additional Information (Detail) - USD ($) $ in Millions |
Mar. 31, 2018 |
Mar. 31, 2017 |
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| Inventory Disclosure [Abstract] | ||
| Finished goods inventory balance held at vendor's managed locations | $ 30.2 | $ 29.8 |
| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Gross amount of inventory owned by the entity but in the hands of a customer, typically a reseller. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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