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, 2018
Sep. 30, 2017
Debt Instrument [Line Items]    
Long-term debt, net of current portion $ 177,055 $ 186,476
Deferred Financing Costs, Net 1,613 1,767
Less current portion 5,250 4,550
Long-term debt 171,805 181,926
Met Fixed-Rate Term Loans    
Debt Instrument [Line Items]    
Long-term debt, net of current portion 97,500 99,062
Deferred Financing Costs, Net 865 954
Met Variable-Rate Term Loans    
Debt Instrument [Line Items]    
Long-term debt, net of current portion 47,438 49,594
Deferred Financing Costs, Net 398 439
Met Citree Term Loan    
Debt Instrument [Line Items]    
Long-term debt, net of current portion 4,950 5,000
Deferred Financing Costs, Net 45 49
Pru Loans A & B    
Debt Instrument [Line Items]    
Long-term debt, net of current portion 17,707 23,030
Deferred Financing Costs, Net 245 258
Pru Loan E    
Debt Instrument [Line Items]    
Long-term debt, net of current portion 4,730 4,895
Deferred Financing Costs, Net 19 25
Pru Loan F    
Debt Instrument [Line Items]    
Long-term debt, net of current portion 4,730 4,895
Deferred Financing Costs, Net $ 41 $ 42