Line of Credit and Long-Term Debt (Details) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 24, 2016 USD ($)	Dec. 25, 2015 USD ($)	Mar. 30, 2015 USD ($)
Long-term debt
Total debt	$ 395,025	$ 301,662
Less: current portion of debt	2,221	2,069
Total long-term portion of debt	392,804	$ 299,593
Revolving Credit Facility
Line of credit
Maximum borrowing capacity			$ 1,100,000
Additional borrowing capacity, option to increase			350,000
Maximum available for the issuance of standby letters of credit after amendment			750,000
Maximum subfacility available for multicurrency borrowings			$ 300,000
Cap On Restricted Payments Including Common Or Preferred Stock Repurchases And Redemptions	$ 100,000
Required pro forma leverage threshold thereafter	2.75
Average rate of interest (as a percent)	2.00%	2.00%
Remaining unused borrowing capacity available under the credit facility	$ 85,200
Long-term debt
Total debt	385,590	$ 292,783
Revolving Credit Facility | Letters of credit and bank guarantee facilities
Line of credit
Amount outstanding under letters of credit, and bank guarantee facilities	$ 125,400	$ 145,500
Revolving Credit Facility | Maximum
Line of credit
Consolidated leverage ratio	3.00
Percentage of sale proceeds of assets utilized to repurchase stock	50.00%
Equipment financing
Long-term debt
Minimum interest rate on notes (as a percent)	0.22%	0.22%
Maximum interest rate on notes (as a percent)	3.29%	3.29%
Total debt	$ 9,209	$ 8,594
Other notes payable
Long-term debt
Total debt	$ 226	$ 285