Debt Debt (Details) $ in Thousands	12 Months Ended
	Dec. 27, 2016 USD ($)
Debt Instrument [Line Items]
Repayments of Debt	$ 428,858
2017 [Member]
Debt Instrument [Line Items]
Repayments of Debt	17,536
2018 [Member]
Debt Instrument [Line Items]
Repayments of Debt	17,536
2019 [Member]
Debt Instrument [Line Items]
Repayments of Debt	117,536
2020 [Member]
Debt Instrument [Line Items]
Repayments of Debt	$ 276,250