Quarterly report pursuant to Section 13 or 15(d)

Debt - Interest Rate Swap Contracts as Reflected on Balance Sheet (Details)

v3.20.1
Debt - Interest Rate Swap Contracts as Reflected on Balance Sheet (Details) - Designated as Hedging Instrument - Interest Rate Swaps - USD ($)
$ in Thousands
Mar. 31, 2020
Sep. 30, 2019
Derivatives, Fair Value [Line Items]    
Total derivatives $ (6,032) $ (534)
Current assets: Other Current Assets    
Derivatives, Fair Value [Line Items]    
Assets derivatives 0 548
Long-term assets: Other Assets    
Derivatives, Fair Value [Line Items]    
Assets derivatives 777 297
Current Liabilities: Other Current Liabilities    
Derivatives, Fair Value [Line Items]    
Liability derivatives (2,821) (484)
Long-Term Liabilities: Other Liabilities    
Derivatives, Fair Value [Line Items]    
Liability derivatives $ (3,988) $ (895)