Fair Value Measurement, Financial Instruments And Risk Management (Narrative) (Details) (USD $)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2013	Jun. 24, 2012	Jun. 30, 2013	Jun. 24, 2012	Dec. 30, 2012
Fair Value Disclosures [Line Items]
Restructuring Reserve	$ 4,393,000		$ 4,393,000		$ 9,579,000
Restructuring related asset impairment			731,000	5,297,000
Assets	45,000		45,000		193,000
Liabilities	30,000		30,000		208,000
Unrealized gain recorded in other comprehensive income	4,000	590,000	(153,000)	(2,000)	(1,521,000)
Tax of unrealized loss recorded in other comprehensive Income	0	18,000	0	5,000
Unrealized loss from cash flow hedge expected to be reclassified to earnings over the next 12 months	100,000		100,000
Unrealized loss from cash flow hedge reclassified to earnings, tax			100,000
Hedge ineffectiveness	0
PROPERTY, PLANT, AND EQUIPMENT, net	94,759,000		94,759,000		107,184,000	[1]
Foreign Currency Forward Exchange Contracts [Member]
Fair Value Disclosures [Line Items]
Notional amount of derivatives not designated as hedging instruments	12,400,000		12,400,000
Assets	45,000		45,000		179,000
Liabilities	30,000		30,000		208,000
Foreign Currency Revenue Forecast Contracts [Member]
Fair Value Disclosures [Line Items]
Assets					14,000
Unrealized gain recorded in other comprehensive income			100,000
Tax of unrealized loss recorded in other comprehensive Income			100,000
Gain (Loss) on Foreign Currency Derivatives Recorded in Earnings, Net	5,000		200,000
Fair Value, Measurements, Nonrecurring [Member]
Fair Value Disclosures [Line Items]
Property, Plant, and Equipment, Fair Value Disclosure	400,000		400,000
Lease termination liabilities [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value Disclosures [Line Items]
Restructuring Reserve					400,000
Other restructuring costs			200,000
Liabilities, Fair Value Adjustment			100,000
Impairment of certain long-lived assets [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value Disclosures [Line Items]
PROPERTY, PLANT, AND EQUIPMENT, net	$ 1,100,000		$ 1,100,000

[1] Derived from the Company’s audited Consolidated Financial Statements at December 30, 2012.