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Long-Term Debt, Interest Rate Swap and Finance Lease Obligations - Schedule of Long-term Debt (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Debt Instrument [Line Items]    
Long-term debt $ 61,087 $ 74,143
Plus finance lease obligations 531  
Less current portion (1,660) (3,498)
Long-term debt, excluding current maturities 59,958 71,502
Less deferred financing costs, net (1,432) (865)
Long-term debt and finance lease obligation, net 58,526 70,637
Equipment    
Debt Instrument [Line Items]    
Plus finance lease obligations 531 857
Mortgage loan | Loans Payable    
Debt Instrument [Line Items]    
Long-term debt 61,087 49,743
Acquisition loan | Loans Payable    
Debt Instrument [Line Items]    
Long-term debt 0 9,400
Revolver | Line of Credit | Revolving Credit Facility    
Debt Instrument [Line Items]    
Long-term debt 0 14,000
Affiliated revolver | Line of Credit | Revolving Credit Facility    
Debt Instrument [Line Items]    
Long-term debt $ 0 $ 1,000