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Discontinued Operations
 12 Months Ended
Dec. 31, 2014
Discontinued Operations and Disposal Groups [Abstract]  
Discontinued Operations

11.   Discontinued Operations

During 2009, the Company sold all of its 3D product line including inventory, fixed assets, and intangibles and recorded gains on the sale of discontinued operations of $187,000 at the time of the sales. The consideration for the sales was $2.7 million in the form of cash of $320,000 and notes receivable of $2.4 million, for which the proceeds are being recognized when they are received. The Company abandoned all other 3D operations. Accordingly, the operations of the 3D product line were classified as discontinued operations, net of income tax, in the consolidated statement of operations for all periods presented. The assets sold consisted primarily of intangible assets that had no carrying value on the Company’s books at the time of sale. In the years ended December 31, 2014, 2013, and 2012 the Company recorded gains on sales of discontinued operations net of tax of $0, $0, and $153,000 respectively, from the original sale and payments on notes from the sale of the 3D product line.