Fair Value of Financial Instruments, Assests and Liabilities Measured at Fair Value (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 02, 2017	Dec. 25, 2016	Mar. 27, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, assets	$ 3,687	$ 3,736	$ 6,109
Derivatives, assets	56,017	87,894	69,720
Total assets, fair value hierarchy	59,704	91,630	75,829
Derivatives, liabilities	20,595	11,309	3,932
Option Agreement	28,710	28,770	27,920
Total Liabilities	$ 49,305	40,079	31,852
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Investment Redemption, Notice Period	45 days
Minimum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Investment Redemption, Notice Period	60 days
Maximum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Investment Redemption, Notice Period	90 days
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, assets	$ 3,687	3,736	6,109
Derivatives, assets	0	0	0
Total assets, fair value hierarchy	3,687	3,736	6,109
Derivatives, liabilities	0	0	0
Option Agreement	0	0	0
Total Liabilities	0	0	0
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, assets	0	0	0
Derivatives, assets	56,017	87,894	69,720
Total assets, fair value hierarchy	56,017	87,894	69,720
Derivatives, liabilities	20,595	11,309	3,932
Option Agreement	0	0	0
Total Liabilities	20,595	11,309	3,932
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, assets	0	0	0
Derivatives, assets	0	0	0
Total assets, fair value hierarchy	0	0	0
Derivatives, liabilities	0	0	0
Option Agreement	28,710	28,770	27,920
Total Liabilities	$ 28,710	$ 28,770	$ 27,920