Financing Arrangements - Additional Information (Details) (USD $)	12 Months Ended
	Dec. 29, 2012	Aug. 07, 2012	Dec. 31, 2011
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 1,000,000,000
Senior secured revolving credit line	256,500,000		309,400,000
Letters of credit outstanding	7,800,000
Remaining borrowing capacity	735,700,000
Credit facility, average interest rate	1.54%
Variable commitment fee	0.23%
Carrying Value	260,070,000		317,335,000
Credit facility, additional interest rate above LIBOR	1.25%
Ratio of indebtedness to net capital	3.5
Fixed charge coverage ratio	1.25
Houno A/S [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity	1,700,000
Long-term line of credit	100,000
Carrying Value	1,600,000
Credit facility, additional interest rate above LIBOR	1.25%
Interest rate at period end	2.75%
Maturity date	2022
Interest rate at end of period, debt	4.55%
Acquisition of Giga [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 1,600,000
Credit facility, average interest rate	4.68%
Maturity on long term debt	April 2013