Quarterly report pursuant to Section 13 or 15(d)

Description of Organization and Business Operations - Schedule of Aggregate Closing Consideration for Redemption Range (Details)

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Description of Organization and Business Operations - Schedule of Aggregate Closing Consideration for Redemption Range (Details) - USD ($)
9 Months Ended
Jun. 30, 2019
Mar. 06, 2019
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]    
Note Principal Amount   $ 1,437,500
Unsecured Promissory Notes    
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]    
Note Principal Amount   $ 1,437,500
Redemption Percentage is equal to or greater than 87.5%    
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]    
Cash Consideration $ 0  
Closing Share Consideration (in shares of the Company’s Common Stock) 10,181,819  
Redemption Percentage is equal to or greater than 87.5% | Unsecured Promissory Notes    
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]    
Note Principal Amount $ 15,000,000  
Redemption Percentage is greater than 75.0% but less than 87.5%    
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]    
Cash Consideration $ 3,750,000  
Closing Share Consideration (in shares of the Company’s Common Stock) 9,781,819  
Redemption Percentage is greater than 75.0% but less than 87.5% | Unsecured Promissory Notes    
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]    
Note Principal Amount $ 11,250,000  
Redemption Percentage is greater than 62.5% but less than or equal to 75.0%    
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]    
Cash Consideration $ 7,500,000  
Closing Share Consideration (in shares of the Company’s Common Stock) 9,381,819  
Redemption Percentage is greater than 62.5% but less than or equal to 75.0% | Unsecured Promissory Notes    
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]    
Note Principal Amount $ 7,500,000  
Redemption Percentage is equal to or greater than 50.0% but less than or equal to 62.5%    
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]    
Cash Consideration $ 11,250,000  
Closing Share Consideration (in shares of the Company’s Common Stock) 8,999,319  
Redemption Percentage is equal to or greater than 50.0% but less than or equal to 62.5% | Unsecured Promissory Notes    
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]    
Note Principal Amount $ 3,750,000  
Redemption Percentage is less than 50.0%    
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]    
Cash Consideration $ 15,000,000  
Closing Share Consideration (in shares of the Company’s Common Stock) 8,616,819  
Redemption Percentage is less than 50.0% | Unsecured Promissory Notes    
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]    
Note Principal Amount $ 0