Basis of Reporting (Details Textual) (USD $)	3 Months Ended		9 Months Ended
	Sep. 29, 2012	Oct. 01, 2011	Sep. 29, 2012	Oct. 01, 2011	Dec. 31, 2011
Research and Development Expense, Software (Excluding Acquired in Process Cost)	$ 80,000	$ 142,000	$ 420,000	$ 427,000
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax	4,000,000		4,000,000		4,300,000
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	497,888
Foreign Exchange Contract [Member]
Notional Amount of Foreign Currency Fair Value Hedge Derivatives	$ 290,000		$ 290,000
Foreign Currency Forward Contracts Expiration Date			Dec. 28, 2012