Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements (Details)

v3.20.2
Fair Value Measurements (Details) - Fair Value, Recurring - Level 2 - USD ($)
$ in Thousands
Jun. 30, 2020
Sep. 30, 2019
Commodity swaps    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative liabilities $ 403 $ 0
Interest rate swaps    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative liabilities $ 1,897 $ 311