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Derivative Financial Instruments (Details) - USD ($)
$ in Millions
12 Months Ended
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Derivative, Maturity Date Sep. 30, 2021    
Derivative, Cap Interest Rate 0.75%    
Derivative, Fixed Interest Rate     2.341%
Derivative, Notional Amount     $ 150.0
Derivative Liability, Noncurrent $ 0.9 $ 0.3  
Secured Debt [Member]      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Derivative, Amount of Hedged Item $ 150.0    
Cash Flow Hedging [Member] | Secured Debt [Member]      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Debt Instrument, Interest Rate, Effective Percentage 4.841%