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DEBT - Narrative (Details) - USD ($)
3 Months Ended 6 Months Ended
Apr. 09, 2018
Feb. 06, 2018
Jun. 28, 2017
Apr. 06, 2017
Mar. 31, 2018
Jun. 30, 2018
Jun. 30, 2017
Short-term Debt [Line Items]              
Debt issuance costs           $ 7,696,000 $ 8,277,000
Loss on extinguishment and modification of debt           $ 0 $ 6,785,000
Term Loan | Base Rate              
Short-term Debt [Line Items]              
Interest rate during period for the credit agreement           5.00%  
Term Loan | London Interbank Offered Rate (LIBOR)              
Short-term Debt [Line Items]              
Interest rate during period for the credit agreement           6.00%  
Revolving credit facility | Base Rate              
Short-term Debt [Line Items]              
Interest rate during period for the credit agreement           4.50%  
Revolving credit facility | London Interbank Offered Rate (LIBOR)              
Short-term Debt [Line Items]              
Interest rate during period for the credit agreement           5.50%  
2017 Credit Agreement | Line of Credit              
Short-term Debt [Line Items]              
Debt issuance costs       $ 5,700,000      
2017 Credit Agreement | Term Loan              
Short-term Debt [Line Items]              
Total amount available under Credit Agreement       300,000,000      
Debt issuance costs       3,300,000      
Debt balance           $ 431,300,000  
Interest rate at period end           7.80%  
2017 Credit Agreement | Term Loan | Line of Credit              
Short-term Debt [Line Items]              
Loss on extinguishment and modification of debt       1,900,000      
2017 Credit Agreement | Revolving credit facility              
Short-term Debt [Line Items]              
Total amount available under Credit Agreement       25,000,000      
Debt issuance costs       400,000      
Debt balance           $ 16,000,000  
Interest rate at period end           8.99%  
2017 Credit Agreement | Incremental Term Loan              
Short-term Debt [Line Items]              
Total amount available under Credit Agreement   $ 135,000,000          
Credit Agreement              
Short-term Debt [Line Items]              
Loss on extinguishment and modification of debt       $ 4,800,000      
Credit Agreement | London Interbank Offered Rate (LIBOR)              
Short-term Debt [Line Items]              
Basis spread on variable rate         1.00%    
Credit Agreement | Prime Rate              
Short-term Debt [Line Items]              
Basis spread on variable rate         2.00%    
Credit Agreement | Federal Funds Effective Swap Rate              
Short-term Debt [Line Items]              
Basis spread on variable rate         0.50%    
Second Amendment to 2017 Credit Agreement | Line of Credit              
Short-term Debt [Line Items]              
Debt issuance costs   1,000,000          
Legal and professional expenses   200,000          
Second Amendment to 2017 Credit Agreement | Term Loan | Line of Credit              
Short-term Debt [Line Items]              
Debt issuance costs   $ 800,000          
Third Amendment To 2017 Credit Agreement | Line of Credit              
Short-term Debt [Line Items]              
Debt issuance costs     $ 5,000,000        
Legal and professional expenses     100,000        
Third Amendment To 2017 Credit Agreement | Term Loan | Line of Credit              
Short-term Debt [Line Items]              
Debt issuance costs     $ 4,900,000        
Fourth Amendment to Credit Agreement | Term Loan | Line of Credit              
Short-term Debt [Line Items]              
Debt issuance costs $ 1,700,000            
Debt issuance costs 1,600,000            
Legal and professional expenses $ 100,000            
Reduction of interest rate margins 1.25%            
Prepayment premium percentage 1.00%