Discontinued Operations (Details Textual) (USD $)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2009
Discontinued Operations (Textual) [Abstract]
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
Gain from discontinued operations, net of tax	$ 153,000	$ 18,000	$ 153,000	$ 61,000	$ 187,000