Sale of Property	12 Months Ended
Dec. 31, 2012
Sale of Property [Abstract]
Sale of Property	3. Sale of Property On September 18, 2009, the Company sold its headquarters and primary manufacturing facility to the City of Grapevine, Texas (the “City”) for a purchase price of $2,747,000. The Company was entitled to continue to occupy the facility, through December 31, 2010 at no cost. The City has further agreed to pay the Company’s relocation costs within the Dallas-Fort Worth area and to pay the Company’s real property taxes for the facility through June 2011. During May 2011, the Company relocated its corporate headquarters and primary manufacturing facility from Grapevine, Texas to a new 100,500 sq. ft. building in DFW Airport, Texas. The Company received a $341,000 payment towards the moving costs at closing which was recorded as “Deferred revenue” in the Company’s consolidated balance sheet as of December 31, 2010. The Company offset $211,768 of moving expense against deferred revenue in 2011. The difference of $129,232 between the deferred revenue balance at December 31, 2010 and the amount offset against moving expenses was recorded as “Other income.” Proceeds of the sale were used to pay off the $2 million mortgage secured by the property and for general working capital purposes. The Company invested approximately $875.000 during 2011 for leasehold improvements and machinery and equipment related to relocating.

- Definition

The entire disclosure for long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software. This disclosure may include property plant and equipment accounting policies and methodology, a schedule of property, plant and equipment gross, additions, deletions, transfers and other changes, depreciation, depletion and amortization expense, net, accumulated depreciation, depletion and amortization expense and useful lives, income statement disclosures, assets held for sale and public utility disclosures.

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