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
Dec. 31, 2020
Sep. 30, 2020
Debt Instrument [Line Items]    
Less current portion $ 9,090 $ 9,145
Deferred Financing Costs, Net 1,109 1,151
Met Fixed-Rate Term Loans    
Debt Instrument [Line Items]    
Principal 81,875 83,438
Deferred Financing Costs, Net 596 621
Met Variable-Rate Term Loans    
Debt Instrument [Line Items]    
Principal 40,250 40,969
Deferred Financing Costs, Net 274 286
Met Citree Term Loan    
Debt Instrument [Line Items]    
Principal 4,450 4,512
Deferred Financing Costs, Net 35 36
Pru Loans A & B    
Debt Instrument [Line Items]    
Principal 14,807 15,097
Deferred Financing Costs, Net 203 207
Pru Loan E    
Debt Instrument [Line Items]    
Principal 4,180 4,235
Deferred Financing Costs, Net 1 1
Term Loans and PRU Loans    
Debt Instrument [Line Items]    
Principal 145,562 148,251
Less current portion 9,090 9,145
Long-term debt 136,472 139,106
Deferred Financing Costs, Net $ 1,109 $ 1,151