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Segment Information and Sales to Significant Customers - Summary Sales to Significant Customers (Parenthetical) (Detail)	12 Months Ended
	Sep. 30, 2020
Revenue [Member]
Percentage of revenue from significant customer	10.00%

X

- 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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
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