Operating Segment Information and Concentrations of Risk - Additional Information (Detail) |
12 Months Ended | ||
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Mar. 31, 2019 |
Mar. 31, 2018 |
Mar. 31, 2017 |
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| Accounts Receivable | Customer A | Customer Concentration Risk | |||
| Segment Reporting Information [Line Items] | |||
| Concentration risk, percentage | 8.50% | 9.00% | |
| Sales Revenue, Net | Geographic Concentration Risk | |||
| Segment Reporting Information [Line Items] | |||
| Concentration risk, percentage | 36.00% | 22.00% | 21.00% |
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- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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