Debt - Debt Acquired in Acquisition (Details)		9 Months Ended
	Sep. 16, 2008 USD ($) subsidiary	Sep. 25, 2016 USD ($)	Dec. 27, 2015 USD ($)
Debt Instrument [Line Items]
Debt instrument, face amount		$ 452,000,000	$ 452,700,000
Carrying Amount		446,000,000	$ 445,100,000
10-year term loan
Debt Instrument [Line Items]
Debt instrument, face amount	$ 10,000,000.0
Maturity period	10 years
Number of subsidiaries acquired | subsidiary	1
Carrying Amount		2,000,000
Quarterly installment payment - principal		$ 300,000
10-year term loan | LIBOR rate
Debt Instrument [Line Items]
Basis spread on variable rate (percent)		1.50%