Divestiture and Discontinued Operations (Details Textual) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012 Product_Lines	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Discontinued Operations (Textual) [Abstract]
Disposal Group sales price not including Discontinued operations									$ 1,600,000
Number of product line ceased									3
Recognized pre-tax loss In Continuing operations from Disposal Group									0	0	(43,000)
Net income from discontinued operations (net of tax)	0	0	153,000	0	0	0	18,000	43,000	153,000	61,000	130,000	187,000
Negotiated consideration for 3D product line sales									2,700,000
Negotiated consideration for the sales of discontinued operation in the form of cash									320,000
Negotiated consideration for the sales of discontinued operation in the form of notes receivable									2,400,000
Assets sold consisted primarily of intangible assets carrying value												$ 0