Marketable Securities and Equity-Method Affiliates (Marketable Securities) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 28, 2013	Dec. 28, 2013	Dec. 29, 2012
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 11,084		$ 6,781
Gross Unrealized Gains	0		0
Gross Unrealized Losses	0	0
Fair Value	11,084		6,781
Maturities of debt securities, Amortized Cost
Due less than one year, Amortized Cost	11,084		6,781
Due after one year through five years, Amortized Cost	0		0
Due after ten years, Amortized Cost	0		0
Amortized Cost	11,084		6,781
Maturities of debt securities, Fair Value
Dus less than one year, Fair Value	11,084		6,781
Due after one year through five years, Fair Value	0		0
Due after ten years, Fair Value	0		0
Time Deposits [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	11,084		6,781
Gross Unrealized Gains	0		0
Gross Unrealized Losses	0		0
Fair Value	$ 11,084		$ 6,781