Significant Accounting Policies - Revenue by Major Customers (Detail) - Revenues - Customer Concentration Risk |
3 Months Ended | 6 Months Ended | ||
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Mar. 31, 2020 |
Mar. 31, 2019 |
Mar. 31, 2020 |
Mar. 31, 2019 |
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Concentration Risk [Line Items] | ||||
Concentration risk percentage | 39.40% | 30.70% | 39.40% | 31.40% |
Public | ||||
Concentration Risk [Line Items] | ||||
Concentration risk percentage | 60.60% | 69.30% | 60.60% | 68.60% |
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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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- 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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