Note 3 - Sale of Property	12 Months Ended
Dec. 31, 2013
Property, plant and equipment: [Abstract]
Property, Plant and Equipment Disclosure [Text Block]	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 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 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. On August 8, 2013, the Company completed the sale of certain real property located in Ellicottville, New York pursuant to a Purchase and Sale Agreement dated May 7, 2013 by and between American Locker Security Systems, Inc., a wholly-owned subsidiary of the Company, and Michael Young. Mr. Young purchased the real property, consisting of an approximately 12,800 square foot building, for total consideration of $212,500. The Company received proceeds, net of selling costs, of approximately $211,000 and recorded a gain on the sale of this property of approximately $205,000. The sale of this property concluded the relocation and consolidation of its Ellicottville, New York operations into its Texas facility.

Note 3 - Sale of Property

12 Months Ended

Dec. 31, 2013

Property, plant and equipment: [Abstract]

Property, Plant and Equipment Disclosure [Text Block]

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 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 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.

On August 8, 2013, the Company completed the sale of certain real property located in Ellicottville, New York pursuant to a Purchase and Sale Agreement dated May 7, 2013 by and between American Locker Security Systems, Inc., a wholly-owned subsidiary of the Company, and Michael Young. Mr. Young purchased the real property, consisting of an approximately 12,800 square foot building, for total consideration of $212,500. The Company received proceeds, net of selling costs, of approximately $211,000 and recorded a gain on the sale of this property of approximately $205,000. The sale of this property concluded the relocation and consolidation of its Ellicottville, New York operations into its Texas facility.

- Definition

The entire disclosure for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, accounting policies and methodology, roll forwards, depreciation, depletion and amortization expense, including composite depreciation, accumulated depreciation, depletion and amortization expense, useful lives and method used, income statement disclosures, assets held for sale and public utility disclosures.

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