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Revenue Recognition - Additional Information (Detail 1) | Sep. 30, 2020 | Sep. 30, 2019
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Minimum | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2019-10-01 |  |
Revenue Recognition [Line Items] |  |
Performance obligations, customer satisfaction period |  | 1 month
Minimum | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2020-10-01 |  |
Revenue Recognition [Line Items] |  |
Performance obligations, customer satisfaction period | 1 month |
Maximum | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2019-10-01 |  |
Revenue Recognition [Line Items] |  |
Performance obligations, customer satisfaction period |  | 15 months
Maximum | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2020-10-01 |  |
Revenue Recognition [Line Items] |  |
Performance obligations, customer satisfaction period | 13 months |

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- Definition Revenue recognition. + References No definition available. + Details
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- Definition Period in which remaining performance obligation is expected to be recognized as revenue, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130556-203045 + Details
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