Annual report pursuant to Section 13 and 15(d)

Financing Arrangements - Summary of Debt (Details)

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Financing Arrangements - Summary of Debt (Details) - USD ($)
Jan. 06, 2017
Dec. 31, 2016
Jun. 29, 2016
Dec. 31, 2015
Jul. 01, 2015
Debt Instrument [Line Items]          
Unamortized bond discounts, fair value adjustments and issue costs, net   $ (26,979,000)   $ (14,165,000)  
Notes payable   470,300,000   71,154,000  
Less: current portion, net   (2,069,000)   (1,055,000)  
Total noncurrent debt   468,231,000   70,099,000  
Convertible subordinated notes          
Debt Instrument [Line Items]          
Notes payable   82,500,000   82,500,000  
Other Debt Obligations          
Debt Instrument [Line Items]          
Notes payable   3,299,000   2,819,000  
First Lien Credit Agreement          
Debt Instrument [Line Items]          
Maximum borrowing capacity on line of credit         $ 303,000,000.0
First Lien Credit Agreement | Bank term loans          
Debt Instrument [Line Items]          
Long-term line of credit   263,980,000   0 265,300,000
Second Lien Credit Agreement | Bank term loans          
Debt Instrument [Line Items]          
Maximum borrowing capacity on line of credit     $ 92,000,000.0    
Long-term line of credit   92,000,000 92,000,000 0  
Revolving Credit Facility | First Lien Credit Agreement          
Debt Instrument [Line Items]          
Maximum borrowing capacity on line of credit     75,500,000.0   $ 35,000,000.0
Long-term line of credit   $ 55,500,000 $ 28,000,000 $ 0  
Subsequent Event | Secured Debt | Line of Credit          
Debt Instrument [Line Items]          
Maximum borrowing capacity on line of credit $ 500,000,000        
Subsequent Event | Revolving Credit Facility | Line of Credit          
Debt Instrument [Line Items]          
Maximum borrowing capacity on line of credit $ 85,000,000