Other (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 26, 2016	Jun. 28, 2015	Jun. 26, 2016	Jun. 28, 2015	Dec. 27, 2015
Other Expense [Line Items]
Restructuring charge	$ 11,855	$ 0	$ 11,855	$ 0
Severance liability	21,700		21,700		$ 14,900
Advertising expense	20,100	21,100	41,200	42,500
Capitalized Computer Software Costs
Other Expense [Line Items]
Capitalized Computer Software, Amortization	2,700	3,100	5,700	6,000
Selling, General and Administrative Expenses
Other Expense [Line Items]
Severance costs	1,700	$ 1,900	5,300	$ 3,400
International Operation Streamlining Plan
Other Expense [Line Items]
Restructuring charge			11,900
Additional costs expected	$ 3,000		3,000
Employee Relocation and Severance | International Operation Streamlining Plan
Other Expense [Line Items]
Restructuring charge			11,800
Lease Impairment and Other Contract-related Charges | International Operation Streamlining Plan
Other Expense [Line Items]
Restructuring charge			$ 100