Investments TIMWEN (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 29, 2015		Mar. 30, 2014
Investment in Joint Venture [Roll Forward]
Equity in earnings for the period, net of amortization of purchase price adjustment	$ 2,042		$ 2,156
Distributions received	(2,378)		(3,164)
Foreign currency translation adjustment included in “Other comprehensive loss, net”	(17,395)		(7,220)
TimWen [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	50.00%
Investment in Joint Venture [Roll Forward]
Balance at beginning of period	69,790		79,810
Equity in earnings for the period	2,625		2,815
Amortization of purchase price adjustments	(583)	[1]	(659)	[1]
Equity in earnings for the period, net of amortization of purchase price adjustment	2,042		2,156
Distributions received	(2,378)		(3,164)
Foreign currency translation adjustment included in “Other comprehensive loss, net”	(5,476)		(2,548)
Balance at end of period	$ 63,978		$ 76,254
Purchase price adjustment, amortization period	21

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