Geographic, Product and Industry Information - Summary of Revenue by Geographic Region (Detail) - USD ($) $ in Thousands	3 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Revenue	$ 28,161	$ 17,164
United States [Member]
Segment Reporting Information [Line Items]
Revenue	17,034	9,827
EMEA [Member]
Segment Reporting Information [Line Items]
Revenue	9,058	5,941
APAC [Member]
Segment Reporting Information [Line Items]
Revenue	1,767	1,241
Americas [Member]
Segment Reporting Information [Line Items]
Revenue	$ 302	$ 155

Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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+ Details