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Basis of Presentation of Unaudited Interim Condensed Consolidated Financial Statements and Significant Accounting Policies - Additional Information (Details) | 6 Months Ended
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Mar. 31, 2019
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |
Period of amortization | 3 years
Minimum | Subscription Revenue |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |
Length of contract | 1 year
Maximum | Subscription Revenue |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |
Length of contract | 5 years

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- Definition Amortization period of cost capitalized in obtaining or fulfilling contract with customer, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 340 -SubTopic 40 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=68051541&loc=SL49131251-203054 + Details
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