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CREDIT FACILITY, NOTES PAYABLE AND CAPITAL LEASE OBLIGATIONS (Details Narrative)
1 Months Ended 3 Months Ended 35 Months Ended
Aug. 31, 2018
USD ($)
Aug. 22, 2017
USD ($)
Feb. 02, 2017
USD ($)
Jul. 01, 2016
USD ($)
Sep. 30, 2015
USD ($)
Sep. 30, 2017
Mar. 31, 2019
USD ($)
Aug. 31, 2018
USD ($)
Dec. 31, 2018
USD ($)
Debt Instrument [Line Items]                  
Maximum borrowing capacity       $ 117,500,000     $ 117,500,000    
Deferred financing costs, net of accumulated amortization             1,200,000   $ 1,400,000
Total credit facilities outstanding             0    
Covenant, leverage ratio   4.00              
First Lien Term Loans                  
Debt Instrument [Line Items]                  
Senior secured term loan             623,100,000    
Discounts on term loans             14,300,000    
Amendment No. 5 to Credit Agreement                  
Debt Instrument [Line Items]                  
Deferred financing costs, net of accumulated amortization   $ 350,000              
Proceeds from term loans   170,000,000.0              
Debt issuance costs   4,700,000              
Debt discount   4,100,000              
Amortization of deferred issuance costs   235,000              
Term Loan                  
Debt Instrument [Line Items]                  
Face Value             637,420,000    
Amendment No. 4 to Credit Agreement                  
Debt Instrument [Line Items]                  
Deferred financing costs, net of accumulated amortization     $ 543,000            
Revolving Credit Facility                  
Debt Instrument [Line Items]                  
Maximum borrowing capacity             69,600,000    
Deferred financing costs, net of accumulated amortization             1,200,000    
Total credit facilities outstanding             41,000,000   28,000,000
Letters of credit outstanding             $ 6,900,000    
Effective interest rate             8.25%    
SunTrust | Revolving Credit Facility | Line of Credit                  
Debt Instrument [Line Items]                  
Maximum borrowing capacity             $ 30,000,000    
First Lien Term Loan | Term Loan                  
Debt Instrument [Line Items]                  
Discounts on term loans             14,272,000   $ 15,112,000
Face Value       485,000,000     578,920,000    
Second Lien Term Loans | Term Loan                  
Debt Instrument [Line Items]                  
Repayments of long-term debt       12,000,000          
General and administrative expense       10,000,000          
First Lien Credit Agreement, Fifth Amendment | Medium-term Notes                  
Debt Instrument [Line Items]                  
Total credit facilities outstanding   100,000,000              
First Lien Credit Agreement, Fifth Amendment | Term Loan                  
Debt Instrument [Line Items]                  
Covenant, increase to credit facility   100,000,000.0              
First Lien Credit Agreement, Fifth Amendment | Revolving Credit Facility | Line of Credit                  
Debt Instrument [Line Items]                  
Periodic payment, principal   $ 8,300,000              
First Lien Credit Agreement, Fourth Amendment | Revolving Credit Facility | Line of Credit                  
Debt Instrument [Line Items]                  
Periodic payment, principal     $ 6,100,000            
First Lien Credit Agreement | Term Loan                  
Debt Instrument [Line Items]                  
Debt instrument, periodic payment       6,100,000          
First Lien Credit Agreement | Revolving Credit Facility | Line of Credit                  
Debt Instrument [Line Items]                  
Maximum borrowing capacity       $ 117,500,000.0          
Commitment fee percentage       0.25%          
Unused capacity, commitment fee percentage       0.50%          
Restated Agreement                  
Debt Instrument [Line Items]                  
Increase (decrease) in line of credit, net               $ 48,100,000  
Restated Agreement | Term Loan                  
Debt Instrument [Line Items]                  
Maximum borrowing capacity $ 60,000,000.0             60,000,000.0  
Face Value             $ 58,500,000    
Debt instrument, periodic payment $ 750,000                
Increase (decrease) in line of credit, net               28,100,000  
Periodic payment, percent 5.00%                
Periodic payment amortization increase $ 375,000             375,000  
Restated Agreement | Revolving Credit Facility | Line of Credit                  
Debt Instrument [Line Items]                  
Maximum borrowing capacity $ 30,000,000.0             30,000,000.0  
Commitment fee percentage 2.75%                
Unused capacity, commitment fee percentage 0.45%                
Increase (decrease) in line of credit, net               20,000,000.0  
Agreement                  
Debt Instrument [Line Items]                  
Maximum borrowing capacity         $ 50,000,000.0        
Agreement | Term Loan                  
Debt Instrument [Line Items]                  
Maximum borrowing capacity $ 40,000,000.0             $ 40,000,000.0  
Debt instrument, periodic payment $ 500,000                
Periodic payment, percent 5.00%                
Agreement | Revolving Credit Facility | Line of Credit                  
Debt Instrument [Line Items]                  
Maximum borrowing capacity         $ 10,000,000.0        
Commitment fee percentage         3.00%        
Unused capacity, commitment fee percentage         0.45%        
Eurodollar | First Lien Term Loan                  
Debt Instrument [Line Items]                  
Basis spread on variable rate       3.75%          
Basis spread on variable rate, increase (decrease)       50.00%          
Eurodollar | First Lien Term Loan | Term Loan                  
Debt Instrument [Line Items]                  
Basis spread on variable rate       3.75%          
Basis spread on variable rate, floor       1.00%          
Eurodollar | First Lien Credit Agreement, Fifth Amendment | Revolving Credit Facility | Line of Credit                  
Debt Instrument [Line Items]                  
Basis spread on variable rate             3.75%    
Effective interest rate             2.75%    
Eurodollar | First Lien Credit Agreement, Fourth Amendment                  
Debt Instrument [Line Items]                  
Basis spread on variable rate     3.25%            
Eurodollar | Restated Agreement | Revolving Credit Facility | Line of Credit                  
Debt Instrument [Line Items]                  
Basis spread on variable rate 2.75%                
Eurodollar | Agreement | Revolving Credit Facility | Line of Credit                  
Debt Instrument [Line Items]                  
Basis spread on variable rate         3.00%        
Eurodollar | ≤ 3.50x | First Lien Credit Agreement, Fifth Amendment | Revolving Credit Facility | Line of Credit                  
Debt Instrument [Line Items]                  
Basis spread on variable rate   3.25%       3.25%      
Eurodollar | ≤ 3.50x | First Lien Credit Agreement | Revolving Credit Facility | Line of Credit                  
Debt Instrument [Line Items]                  
Basis spread on variable rate       3.25%          
Eurodollar | 4.00x but ≤ 5.50x | First Lien Credit Agreement, Fifth Amendment | Revolving Credit Facility | Line of Credit                  
Debt Instrument [Line Items]                  
Basis spread on variable rate   3.75%       3.75%      
Eurodollar | 4.00x but ≤ 5.50x | First Lien Credit Agreement | Revolving Credit Facility | Line of Credit                  
Debt Instrument [Line Items]                  
Basis spread on variable rate       3.75%          
Base Rate | First Lien Term Loan | Term Loan                  
Debt Instrument [Line Items]                  
Basis spread on variable rate       2.75%          
Base Rate | First Lien Credit Agreement, Fifth Amendment | Revolving Credit Facility | Line of Credit                  
Debt Instrument [Line Items]                  
Basis spread on variable rate             2.75%    
Effective interest rate             5.50%    
Base Rate | Restated Agreement | Revolving Credit Facility | Line of Credit                  
Debt Instrument [Line Items]                  
Basis spread on variable rate 1.75%                
Base Rate | Agreement | Revolving Credit Facility | Line of Credit                  
Debt Instrument [Line Items]                  
Basis spread on variable rate         2.00%        
Base Rate | ≤ 3.50x | First Lien Credit Agreement, Fifth Amendment | Revolving Credit Facility | Line of Credit                  
Debt Instrument [Line Items]                  
Basis spread on variable rate   2.25%       2.25%      
Base Rate | ≤ 3.50x | First Lien Credit Agreement | Revolving Credit Facility | Line of Credit                  
Debt Instrument [Line Items]                  
Basis spread on variable rate       2.25%          
Base Rate | 4.00x but ≤ 5.50x | First Lien Credit Agreement, Fifth Amendment | Revolving Credit Facility | Line of Credit                  
Debt Instrument [Line Items]                  
Basis spread on variable rate   2.75%       2.75%      
Base Rate | 4.00x but ≤ 5.50x | First Lien Credit Agreement | Revolving Credit Facility | Line of Credit                  
Debt Instrument [Line Items]                  
Basis spread on variable rate       2.75%