Fair Value of Financial Instruments, Assests and Liabilities Measured at Fair Value (Details) - USD ($) $ in Thousands	9 Months Ended
	Oct. 01, 2017	Dec. 25, 2016	Sep. 25, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, assets	$ 2,866	$ 3,736	$ 4,986
Derivatives, assets	11,975	87,894	39,115
Total assets, fair value hierarchy	14,841	91,630	44,101
Derivatives, liabilities	22,671	11,309	19,390
Option Agreement	28,510	28,770	27,460
Total Liabilities	$ 51,181	40,079	46,850
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	30 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	$ 2,866	3,736	4,986
Derivatives, assets	0	0	0
Total assets, fair value hierarchy	2,866	3,736	4,986
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	11,975	87,894	39,115
Total assets, fair value hierarchy	11,975	87,894	39,115
Derivatives, liabilities	22,671	11,309	19,390
Option Agreement	0	0	0
Total Liabilities	22,671	11,309	19,390
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	28,510	28,770	27,460
Total Liabilities	$ 28,510	$ 28,770	$ 27,460