Investments TIMWEN (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 29, 2014	Jun. 30, 2013	Jun. 29, 2014	Jun. 30, 2013	Jun. 29, 2014 TimWen [Member]		Jun. 30, 2013 TimWen [Member]		Sep. 30, 2008 TimWen [Member] Y
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					$ 79,810		$ 89,370
Equity in earnings for the period					6,197		6,700
Amortization of purchase price adjustments					(1,325)	[1]	(1,540)	[1]
Equity in earnings for the period, net of amortization of purchase price adjustment			4,872	4,071	4,872		5,160
Distributions received			(6,443)	(6,026)	(6,443)		(6,026)
Foreign currency translation adjustment included in “Other comprehensive income (loss), net”	8,195	(6,811)	975	(11,880)	314		(4,820)
Balance at end of period					78,553		83,684
Purchase price adjustment, amortization period									21
Equity Method Investment, Summarized Financial Information [Abstract]
Revenues					17,876		19,039
Income before income taxes and net income					$ 12,394		$ 13,400

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