Annual report pursuant to Section 13 and 15(d)

LONG-TERM DEBT AND LONG-TERM OBLIGATIONS - Additional Information (Details)

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LONG-TERM DEBT AND LONG-TERM OBLIGATIONS - Additional Information (Details)
12 Months Ended
Jul. 31, 2018
USD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Jul. 30, 2018
USD ($)
Oct. 31, 2014
USD ($)
Debt Instrument [Line Items]          
Outstanding debt   $ 83,289,000 $ 102,482,000    
Debt issuance costs   649,000 830,000    
ARC Agreement          
Debt Instrument [Line Items]          
Debt issuance costs     300,000    
ARC Agreement | Revolving Credit Facility          
Debt Instrument [Line Items]          
Revolving commitments         $ 40,000,000.0
ARC Agreement, Fourth Amendment          
Debt Instrument [Line Items]          
Debt issuance costs     $ 900,000    
ARC Agreement, Fourth Amendment | Revolving Credit Facility          
Debt Instrument [Line Items]          
Revolving commitments $ 75,000,000.0        
Borrowed funds under the agreement   3,000,000      
Available borrowings   $ 50,000,000      
Effective interest rate   4.56%      
ARC Agreement, Fourth Amendment | TOCCO          
Debt Instrument [Line Items]          
Consolidated leverage ratio, minimum required   3.50      
Consolidated leverage ratio   2.2 4.03    
Consolidated fixed charge coverage ratio, minimum required   1.15      
ARC Agreement, Fourth Amendment | Minimum | Revolving Credit Facility          
Debt Instrument [Line Items]          
Commitment fee 0.20%        
ARC Agreement, Fourth Amendment | Minimum | TOCCO          
Debt Instrument [Line Items]          
Consolidated fixed charge coverage ratio   2.56 1.29    
ARC Agreement, Fourth Amendment | Minimum | LIBOR | Revolving Credit Facility          
Debt Instrument [Line Items]          
Basis spread on variable rate 1.25%        
ARC Agreement, Fourth Amendment | Minimum | Base Rate | Revolving Credit Facility          
Debt Instrument [Line Items]          
Basis spread on variable rate 0.25%        
ARC Agreement, Fourth Amendment | Maximum | Revolving Credit Facility          
Debt Instrument [Line Items]          
Commitment fee 0.375%        
ARC Agreement, Fourth Amendment | Maximum | LIBOR | Revolving Credit Facility          
Debt Instrument [Line Items]          
Basis spread on variable rate 2.50%        
ARC Agreement, Fourth Amendment | Maximum | Base Rate | Revolving Credit Facility          
Debt Instrument [Line Items]          
Basis spread on variable rate 1.50%        
Single Advance Term Loan | ARC Agreement          
Debt Instrument [Line Items]          
Aggregate amount         70,000,000.0
Multiple Advance Term Loan | ARC Agreement          
Debt Instrument [Line Items]          
Aggregate amount         $ 25.0
Term Loan | ARC Agreement          
Debt Instrument [Line Items]          
Outstanding debt       $ 60,400,000  
Term Loan | ARC Agreement, Fourth Amendment          
Debt Instrument [Line Items]          
Aggregate amount $ 87,500,000.0        
Outstanding debt   $ 80,900,000      
Optional increase in borrowing capacity $ 50,000,000.0