Nature of Operations and Summary of Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 26, 2015	Dec. 27, 2014	Dec. 28, 2013
Nature Of Operations and Summary Of Significant Accounting Policies [Line Items]
Inventory Valuation Reserves	$ 471	$ 537
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	$ 928	919	$ 617
Research and Development Expense, Total	1,500	1,700	1,200
Proportionate Net Income	$ 3,000	$ 3,900	2,900
Other Operating Income (Expense), Net			$ 343
Percentage Of Loss Portion			50.00%
Building [Member] | Maximum [Member]
Nature Of Operations and Summary Of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	30 years
Building [Member] | Minimum [Member]
Nature Of Operations and Summary Of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	20 years
Machinery and Equipment, Leasehold Improvements [Member] | Maximum [Member]
Nature Of Operations and Summary Of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	15 years
Machinery and Equipment, Leasehold Improvements [Member] | Minimum [Member]
Nature Of Operations and Summary Of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	5 years
Tools, Dies and Molds [Member] | Maximum [Member]
Nature Of Operations and Summary Of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	4 years
Tools, Dies and Molds [Member] | Minimum [Member]
Nature Of Operations and Summary Of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	2 years
Noncompete Agreements [Member]
Nature Of Operations and Summary Of Significant Accounting Policies [Line Items]
Finite-Lived Intangible Asset, Useful Life	5 years
Patents [Member] | Maximum [Member]
Nature Of Operations and Summary Of Significant Accounting Policies [Line Items]
Finite-Lived Intangible Asset, Useful Life	13 years
Patents [Member] | Minimum [Member]
Nature Of Operations and Summary Of Significant Accounting Policies [Line Items]
Finite-Lived Intangible Asset, Useful Life	5 years
Customer Lists [Member] | Maximum [Member]
Nature Of Operations and Summary Of Significant Accounting Policies [Line Items]
Finite-Lived Intangible Asset, Useful Life	14 years
Customer Lists [Member] | Minimum [Member]
Nature Of Operations and Summary Of Significant Accounting Policies [Line Items]
Finite-Lived Intangible Asset, Useful Life	5 years