Investments TIMWEN (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Sep. 28, 2014		Sep. 29, 2013
Investment in Joint Venture [Roll Forward]
Equity in earnings for the period, net of amortization of purchase price adjustment			$ 7,659		$ 6,980
Distributions received			(10,028)		(10,148)
Foreign currency translation adjustment included in “Other comprehensive income (loss), net”	(10,213)	4,851	(9,238)		(7,029)
TimWen [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	50.00%		50.00%
Investment in Joint Venture [Roll Forward]
Balance at beginning of period			79,810		89,370
Equity in earnings for the period			9,651		10,357
Amortization of purchase price adjustments			(1,992)	[1]	(2,288)	[1]
Equity in earnings for the period, net of amortization of purchase price adjustment			7,659		8,069
Distributions received			(10,028)		(10,148)
Foreign currency translation adjustment included in “Other comprehensive income (loss), net”			(3,187)		(3,052)
Balance at end of period	74,254	84,239	74,254		84,239
Purchase price adjustment, amortization period	21		21
Equity Method Investment, Summarized Financial Information [Abstract]
Revenues			27,622		29,113
Equity Method Investment, Summarized Financial Information, Net Income (Loss)			$ 19,302		$ 20,714

[1] Based upon an average original aggregate life of 21 years.