Nature of Operations and Summary of Significant Accounting Policies (Details Textual) (USD $)	12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Dec. 25, 2010
Inventory Valuation Reserves	$ 2,100,000	$ 1,600,000
Equity Method Investment, Description of Principal Activities	Where the equity interest is less than 20% and the degree of influence is not significant, the cost method of accounting is employed. Where the equity interest is greater than 20% but not more than 50%, the equity method of accounting is utilized.
Proceeds from Equity Method Investment, Dividends or Distributions	444,000	323,000	0
Research and Development Expense	1,600,000	1,400,000	1,900,000
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	200,000
Goodwill, Impairment Loss	13,187,000
Equity Method Investment, Other than Temporary Impairment	382,000	0	0
Equity Method Investment, Other than Temporary Impairment, Net of Tax	200,000
Proportionate Net Income	$ 3,000,000	$ 3,300,000	$ 2,000,000
Agreements [Member]
Finite-Lived Intangible Asset, Useful Life	5 years
Maximum [Member] | Patents [Member]
Finite-Lived Intangible Asset, Useful Life	9 years
Minimum [Member] | Patents [Member]
Finite-Lived Intangible Asset, Useful Life	5 years
Building [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life	30 years
Building [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life	20 years
Machinery and Equipment, Leasehold Improvements [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life	15 years
Machinery and Equipment, Leasehold Improvements [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life	5 years
Tools, Dies and Molds [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life	4 years
Tools, Dies and Molds [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life	2 years