Sale of Thermal Imaging Business (Details 1) (USD $)	Sep. 30, 2012	Oct. 02, 2011
Disposal Group Including Discontinued Operation Balance Sheet Disclosures [Abstract]
Accounts receivable, net		$ 1,365,800
Unbilled revenues on uncompleted contracts, net		30,700
Inventory, net		1,389,700
Current assets of discontinued operations		2,786,200
Property and equipment, net		1,312,200
Non-current assets of discontinued operations		1,312,200
Accounts payable		858,100
Accrued expenses		341,600
Deferred revenue		544,800
Current liabilities from discontinued operations		$ 1,744,500