Income Taxes Deferred Income Tax Assets and Liabilities (Details) (USD $)	3 Months Ended								12 Months Ended
	Dec. 30, 2012	Sep. 23, 2012	Jun. 24, 2012	Mar. 25, 2012	Dec. 25, 2011	Sep. 25, 2011	Jun. 26, 2011	Mar. 27, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Income Tax Examination [Line Items]
Liabilities deductible in the future									$ 8,006,000	$ 5,663,000
Deferred compensation									14,973,000	13,785,000
Net loss carryforward									2,043,000	2,851,000
Tax credit carryforward									1,062,000	3,513,000
Competent authority deferred tax assets and other foreign timing differences									6,307,000	17,833,000
Other									1,621,000	3,362,000
Total before valuation allowances									34,012,000	47,007,000
Valuation allowances									(3,394,000)	0	(43,200,000)	(66,100,000)
Net deferred income tax assets									30,618,000	47,007,000
Differences between the book and tax basis of property, plant and equipment									(24,521,000)	(24,913,000)
Deferred income tax liabilities									(24,521,000)	(24,913,000)
Net deferred income tax assets									6,097,000	22,094,000
Income before income taxes and equity earnings	5,305,000	9,882,000	8,438,000	10,864,000	11,990,000	5,124,000	13,645,000	11,167,000	34,489,000	41,926,000	57,483,000
Undistributed Earnings of Foreign Subsidiaries									124,800,000
State and Local Jurisdiction [Member]
Income Tax Examination [Line Items]
Operating Loss Carryforwards									39,400,000
Operating Loss Carryforwards, Expiration Dates									2016
Tax Credit Carryforward, Amount									$ 1,000,000