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Fair Value Measurements (Details) - USD ($) $ in Thousands	Sep. 29, 2019	Dec. 31, 2018	Sep. 23, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deferred finance costs	$ 26,649	$ 21,807	$ 22,964
Derivative Liability [Member] \| Level 2 [Member] \| Fair Value, Recurring [Member] \| Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets (liabilities), at fair value, net	(27,773)	(6,705)
Other Assets [Member] \| Level 2 [Member] \| Fair Value, Recurring [Member] \| Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets (liabilities), at fair value, net			4,123
Reported Value Measurement [Member] \| Derivative Liability [Member] \| Level 2 [Member] \| Fair Value, Recurring [Member] \| Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets (liabilities), at fair value, net	(27,773)	(6,705)
Reported Value Measurement [Member] \| Other Assets [Member] \| Level 2 [Member] \| Fair Value, Recurring [Member] \| Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets (liabilities), at fair value, net			4,123
2017 Credit Agreement [Member] \| Long-term Debt [Member] \| Level 2 [Member] \| Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of term debt	(727,439)	(707,494)	(734,906)
2017 Credit Agreement [Member] \| Reported Value Measurement [Member] \| Long-term Debt [Member] \| Level 2 [Member] \| Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of term debt	(725,625)	(729,375)	(731,250)
2024 U.S. fixed rate notes at 5.375%[Member] \| Long-term Debt [Member] \| Level 1 [Member] \| Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of notes	(462,938)	(441,000)	(450,000)
2024 U.S. fixed rate notes at 5.375%[Member] \| Reported Value Measurement [Member] \| Long-term Debt [Member] \| Level 1 [Member] \| Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of notes	(450,000)	(450,000)	(450,000)
2027 Senior Notes at 5.375% [Member] \| Long-term Debt [Member] \| Level 1 [Member] \| Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of notes	(535,000)	(475,000)	(485,000)
2027 Senior Notes at 5.375% [Member] \| Reported Value Measurement [Member] \| Long-term Debt [Member] \| Level 1 [Member] \| Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of notes	(500,000)	(500,000)	(500,000)
2029 Notes at 5.250% [Member] \| Long-term Debt [Member] \| Level 2 [Member] \| Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of notes	(533,750)	0	0
2029 Notes at 5.250% [Member] \| Reported Value Measurement [Member] \| Long-term Debt [Member] \| Level 2 [Member] \| Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of notes	(500,000)	0	0
Short-term Investments [Member] \| Other Current Assets [Member] \| Level 1 [Member] \| Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, fair value	476	511	1,081
Short-term Investments [Member] \| Reported Value Measurement [Member] \| Other Current Assets [Member] \| Level 1 [Member] \| Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, fair value	$ 476	$ 511	$ 1,081