Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt and Lines of Credit - Schedule of Long-term Debt, Net of Current Portion (Details)

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Long-Term Debt and Lines of Credit - Schedule of Long-term Debt, Net of Current Portion (Details) - USD ($)
$ in Thousands
Jun. 30, 2020
Sep. 30, 2019
Debt Instrument [Line Items]    
Principal $ 215,320  
Less current portion 5,130 $ 5,338
Deferred Financing Costs, Net 1,195 1,369
Met Fixed-Rate Term Loans    
Debt Instrument [Line Items]    
Principal 85,000 89,688
Deferred Financing Costs, Net 647 724
Met Variable-Rate Term Loans    
Debt Instrument [Line Items]    
Principal 41,688 43,844
Deferred Financing Costs, Net 297 334
Met Citree Term Loan    
Debt Instrument [Line Items]    
Principal 4,575 4,750
Deferred Financing Costs, Net 37 40
Pru Loans A & B    
Debt Instrument [Line Items]    
Principal 15,387 16,257
Deferred Financing Costs, Net 211 224
Pru Loan E    
Debt Instrument [Line Items]    
Principal 4,290 4,455
Deferred Financing Costs, Net 3 9
Pru Loan F    
Debt Instrument [Line Items]    
Principal   4,455
Deferred Financing Costs, Net   38
Term Loans and PRU Loans    
Debt Instrument [Line Items]    
Principal 150,940 163,449
Less current portion 5,130 5,338
Long-term debt 145,810 158,111
Deferred Financing Costs, Net $ 1,195 $ 1,369