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-Publisher FASB
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Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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Revenue Recognition - Additional Information (Details) - USD ($)	3 Months Ended	9 Months Ended
	Jun. 30, 2019	Jun. 30, 2019	Oct. 01, 2018
Disaggregation of Revenue [Line Items]
Revenue recognized included in contract liability balance at the beginning of the period		$ 4,200,000
Impairment losses recognized on capitalized contract costs		0
Selling and marketing
Disaggregation of Revenue [Line Items]
Amortization of capitalized contract costs	$ 200,000	400,000
Other Current and Non-current Assets
Disaggregation of Revenue [Line Items]
Capitalized contract costs	$ 1,600,000	$ 1,600,000	$ 1,000,000.0