v3.20.2
DEBT - Schedule of Long-term Debt (Details) - USD ($)
$ in Thousands
Jun. 28, 2020
Dec. 31, 2019
Debt Instrument [Line Items]    
Total long-term debt $ 703,750 $ 705,000
Less: convertible notes debt discount, net (19,755) (23,260)
Less: current maturities of long-term debt (5,000) (5,000)
Less: term loan deferred financing costs, net (492) (542)
Total long-term debt, less current maturities, net 673,138 670,354
Revolver due 2024    
Debt Instrument [Line Items]    
Total long-term debt 135,000 135,000
Term loan due 2024    
Debt Instrument [Line Items]    
Total long-term debt $ 96,250 97,500
1.0% convertible notes due 2023    
Debt Instrument [Line Items]    
Stated interest rate 1.00%  
Total long-term debt $ 172,500 172,500
7.5% senior notes due 2027 | Senior Notes    
Debt Instrument [Line Items]    
Stated interest rate 7.50%  
7.5% senior notes due 2027 $ 300,000 300,000
Less: senior notes deferred financing costs, net $ (5,365) $ (5,844)