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Debt and Financing - Term Loan Amendment (Details) - Term Loan - USD ($)
6 Months Ended
Jul. 26, 2017
Jun. 30, 2017
Jul. 25, 2017
London Interbank Offered Rate (LIBOR)      
Debt Instrument [Line Items]      
Floor interest rate   1.00%  
Basis spread on variable rate   7.50%  
Subsequent Event | Amendment No. 4      
Debt Instrument [Line Items]      
Face amount $ 600,000,000    
Annual principal payments, percent 3.00%   1.00%
Annual principal payment $ 35,200,000    
Unamortized discount 9,700,000    
Third party costs $ 7,500,000    
Subsequent Event | Amendment No. 4 | London Interbank Offered Rate (LIBOR)      
Debt Instrument [Line Items]      
Floor interest rate 1.00%    
Basis spread on variable rate 8.50%    
Subsequent Event | Amendment No. 4 | Alternate Base Rate      
Debt Instrument [Line Items]      
Basis spread on variable rate 6.50%