DEBT - Schedule of Long-term Debt (Details) - USD ($) $ in Thousands	Jun. 27, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Total long-term debt	$ 1,107,500	$ 840,000
Less: convertible notes debt discount, net	(12,429)	(16,072)
Less: term loan deferred financing costs, net	(624)	(434)
Less: current maturities of long-term debt	(7,500)	(7,500)
Total long-term debt, less current maturities, net	$ 1,076,950	810,907
1.00% convertible notes due 2023
Debt Instrument [Line Items]
Stated interest rate	0.01%
Total long-term debt	$ 172,500	172,500
Term loan due 2026
Debt Instrument [Line Items]
Total long-term debt	150,000	92,500
Revolver
Debt Instrument [Line Items]
Total long-term debt	$ 135,000	275,000
Senior Note \| 7.50% senior notes due 2027
Debt Instrument [Line Items]
Stated interest rate	0.075%
Senior Notes	$ 300,000	300,000
Less: senior notes deferred financing costs, net	$ (9,997)	(5,087)
Senior Note \| 4.75% senior notes due 2029
Debt Instrument [Line Items]
Stated interest rate	4.75%
Senior Notes	$ 350,000	$ 0

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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