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DEBT - Additional Information (Details) - USD ($)
6 Months Ended
Jun. 29, 2017
Jun. 30, 2019
Jun. 30, 2018
May 07, 2019
Jun. 21, 2018
Feb. 11, 2014
Debt Instrument [Line Items]            
Interest capitalized as principal on Second Lien Note Facility   $ 8,383,000 $ 0      
Common Stock | 2017 Warrants            
Debt Instrument [Line Items]            
Warrant exercise threshold 4.99%          
Warrants classified within equity at fair value   $ 20,500,000        
Private Placement | Common Stock            
Debt Instrument [Line Items]            
Net cash used in financing activities $ 15,900,000          
Associated costs with private placement 200,000          
First Lien Notes | Senior Secured Debt            
Debt Instrument [Line Items]            
Face amount of debt instruments 200,000,000          
Amortization installment percentage of principal   0.625%        
Early repayment premium base rate   5.00%        
Principal prepayment limit   $ 50,000,000        
Default penalty interest rate increase   2.00%        
First Lien Notes | Senior Secured Debt | Base Rate            
Debt Instrument [Line Items]            
Basis spread on variable rate   6.00%        
First Lien Notes | Senior Secured Debt | LIBOR            
Debt Instrument [Line Items]            
Basis spread on variable rate   7.00%        
First Lien Notes | Senior Secured Debt | Prime Rate            
Debt Instrument [Line Items]            
Basis spread on variable rate   1.00%        
First Lien Notes | Senior Secured Debt | Redemption Period One            
Debt Instrument [Line Items]            
Early repayment premium rate   4.00%        
First Lien Notes | Senior Secured Debt | Redemption Period Two            
Debt Instrument [Line Items]            
Early repayment premium rate   2.00%        
First Lien Notes | Senior Secured Debt | Redemption Period Three            
Debt Instrument [Line Items]            
Early repayment premium rate   0.00%        
Second Lien Notes | Senior Secured Debt            
Debt Instrument [Line Items]            
Face amount of debt instruments $ 100,000,000 $ 126,200,000.0        
Early repayment premium base rate   5.00%        
Default penalty interest rate increase   2.00%        
Interest capitalized as principal on Second Lien Note Facility   $ 8,400,000        
Second Lien Notes | Senior Secured Debt | Option One            
Debt Instrument [Line Items]            
Basis spread on variable rate   9.25%        
Second Lien Notes | Senior Secured Debt | Option Two            
Debt Instrument [Line Items]            
Basis spread on variable rate   11.25%        
Second Lien Notes | Senior Secured Debt | Option Three            
Debt Instrument [Line Items]            
Basis spread on variable rate   10.25%        
Second Lien Notes | Senior Secured Debt | Option Three, Half Cash            
Debt Instrument [Line Items]            
Basis spread on variable rate   4.625%        
Second Lien Notes | Senior Secured Debt | Option Three, Half Capitalized Interest            
Debt Instrument [Line Items]            
Basis spread on variable rate   5.625%        
Second Lien Notes | Senior Secured Debt | Redemption Period One            
Debt Instrument [Line Items]            
Early repayment premium rate   4.00%        
Second Lien Notes | Senior Secured Debt | Redemption Period Two            
Debt Instrument [Line Items]            
Early repayment premium rate   2.00%        
Second Lien Notes | Senior Secured Debt | Redemption Period Three            
Debt Instrument [Line Items]            
Early repayment premium rate   0.00%        
Second Lien Delayed Draw Notes | Senior Secured Debt            
Debt Instrument [Line Items]            
Face amount of debt instruments         $ 10,000,000  
2021 Notes            
Debt Instrument [Line Items]            
Face amount of debt instruments           $ 200,000,000.0
Stated rate on debt   8.875%       8.875%
Debt discount           $ 5,000,000
First Lien Note, Amended | Senior Secured Debt            
Debt Instrument [Line Items]            
Face amount of debt instruments       $ 8,000,000.0    
Minimum | First Lien Notes | Senior Secured Debt | Base Rate            
Debt Instrument [Line Items]            
Basis spread on variable rate   0.50%        
Minimum | First Lien Notes | Senior Secured Debt | LIBOR            
Debt Instrument [Line Items]            
Basis spread on variable rate   1.00%        
Minimum | Second Lien Notes | Senior Secured Debt | Option One | LIBOR            
Debt Instrument [Line Items]            
Basis spread on variable rate   1.25%