Annual report pursuant to Section 13 and 15(d)

Long-Term Debt - Summary of Maximum Senior Leverage Ratio Required to Maintain for Vintage Stock (Details)

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Long-Term Debt - Summary of Maximum Senior Leverage Ratio Required to Maintain for Vintage Stock (Details)
3 Months Ended 12 Months Ended
Jun. 30, 2021
Mar. 31, 2021
Dec. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Debt Instrument [Line Items]                              
Senior leverage ratio                           200.00%  
Maximum                              
Debt Instrument [Line Items]                              
Senior leverage ratio               240.00% 240.00% 260.00% 265.00% 285.00% 285.00% 200.00%  
Maximum | Scenario Forecast                              
Debt Instrument [Line Items]                              
Senior leverage ratio 155.00% 160.00% 185.00% 205.00% 215.00% 220.00% 240.00%                
Minimum                              
Debt Instrument [Line Items]                              
Senior leverage ratio                             200.00%