Annual report pursuant to Section 13 and 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 ($)
Sep. 30, 2020
Nov. 30, 2019
Sep. 30, 2019
Debt Instrument [Line Items]      
Less current portion $ 9,145,000   $ 5,338,000
Deferred Financing Costs, Net 1,151,000   1,369,000
Met Fixed-Rate Term Loans      
Debt Instrument [Line Items]      
Principal 83,438,000 $ 4,455,000 89,688,000
Deferred Financing Costs, Net 621,000   724,000
Met Variable-Rate Term Loans      
Debt Instrument [Line Items]      
Principal 40,969,000   43,844,000
Deferred Financing Costs, Net 286,000   334,000
Met Citree Term Loan      
Debt Instrument [Line Items]      
Principal 4,512,000   4,750,000
Deferred Financing Costs, Net 36,000   40,000
Pru Loans A & B      
Debt Instrument [Line Items]      
Principal 15,097,000   16,257,000
Deferred Financing Costs, Net 207,000   224,000
Pru Loan E      
Debt Instrument [Line Items]      
Principal 4,235,000   4,455,000
Deferred Financing Costs, Net 1,000   9,000
Pru Loan F      
Debt Instrument [Line Items]      
Principal     4,455,000
Deferred Financing Costs, Net     38,000
Term Loans and PRU Loans      
Debt Instrument [Line Items]      
Principal 148,251,000   163,449,000
Less current portion 9,145,000   5,338,000
Long-term debt 139,106,000   158,111,000
Deferred Financing Costs, Net $ 1,151,000   $ 1,369,000