Annual report pursuant to Section 13 and 15(d)

Equity-based Compensation - Schedule of Equity Instruments Other than Options (Details)

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Equity-based Compensation - Schedule of Equity Instruments Other than Options (Details) - 2016 Equity Incentive Plan - shares
12 Months Ended
Aug. 22, 2016
Sep. 30, 2018
Sep. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]      
Beginning balance (in shares)   0 189,000
Granted (in shares) 252,000 0 0
Vested (in shares)   0 (189,000)
Forfeited (in shares)   0 0
Ending balance (in shares)   0 0