Income Taxes (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 29, 2013	Jun. 30, 2012	Jun. 29, 2013	Jun. 30, 2012
Income Taxes [Abstract]
Effective tax rate (in hundredths)	36.00%	33.00%	36.00%	29.00%
Deduction due to U.S. production activities	$ 1,700,000	$ 900,000	$ 2,900,000	$ 2,100,000
Decrease in valuation allowances	800,000		1,300,000	1,000,000
Effect of foreign tax rates lower than statutory tax rates and other foreign adjustments	1,100,000	1,200,000	1,400,000	3,900,000
Provision for state income taxes, net of federal benefit	5,100,000	1,100,000	6,200,000	2,300,000
Gain on settlement of insurance claim	106,332,000	0	106,332,000	1,500,000
Tax expense attrubutable to insurance gain	40,700,000
Unrecognized tax benefits decreases resulting from current period tax positions			300,000	800,000
Unrecognized tax benefits	$ 3,100,000		$ 3,100,000