Income Taxes Deferred Income Tax Assets and Liabilities (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 25, 2016	Sep. 25, 2016	Jun. 26, 2016	Mar. 27, 2016	Dec. 27, 2015	Sep. 27, 2015	Jun. 28, 2015	Mar. 29, 2015	Dec. 31, 2016	Dec. 25, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Examination [Line Items]
Deferred Tax Assets, Net of Valuation Allowance, Noncurrent	$ 28,838,000								$ 28,838,000	$ 28,838,000	$ 25,598,000
Deferred Tax Liabilities, Net, Noncurrent	(3,628,000)								(3,628,000)	(3,628,000)	(8,094,000)
Liabilities deductible in the future	6,120,000									6,120,000	3,981,000
Liabilities deductible in the future related to hedging and foreign currency losses	9,475,000									9,475,000	8,469,000
Deferred compensation	11,723,000									11,723,000	11,833,000
Deferred Tax Assets, Inventory									3,563,000		3,079,000
Net loss carryforwards and credits	3,123,000									3,123,000	5,891,000
Other	5,135,000									5,135,000	4,836,000
Other	462,000									462,000	(683,000)
Total before valuation allowances	39,601,000									39,601,000	37,406,000
Valuation allowance	(3,123,000)									(3,123,000)	(5,891,000)
Net deferred income tax assets	36,478,000									36,478,000	31,515,000
Differences between the book and tax basis of property, plant and equipment	(11,268,000)									(11,268,000)	(14,011,000)
Deferred income tax liabilities	(11,268,000)									(11,268,000)	(14,011,000)
Net deferred income tax assets	25,210,000									25,210,000	17,504,000
Income before income taxes	11,542,000	$ 4,910,000	$ 19,247,000	$ 19,022,000	$ 13,362,000	$ 7,615,000	$ 10,734,000	$ 3,572,000	54,721,000	54,721,000	$ 35,283,000	$ 15,702,000
Operating Loss Carryforwards									49,100,000
Tax Credit Carryforward, Amount									300,000
Undistributed Earnings of Foreign Subsidiaries									168,900,000
Changes Measurement [Member]
Income Tax Examination [Line Items]
Valuation allowance	$ (2,768,000)									$ (2,768,000)
Earliest Tax Year [Member]
Income Tax Examination [Line Items]
Deferred Tax Assets, State Taxes									2,021
Latest Tax Year [Member]
Income Tax Examination [Line Items]
Deferred Tax Assets, State Taxes									$ 2,024
Maximum [Member] | State and Local Jurisdiction [Member]
Income Tax Examination [Line Items]
Operating Loss Carryforwards, Expiration Dates										Jan. 01, 2032