Discontinued Operations (Details) (USD $)	3 Months Ended		6 Months Ended	9 Months Ended		12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Jun. 30, 2012	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Discontinued Operations [Line Items]
Impairment of intangible assets				$ 1,647,000	$ 2,928,000
Impairment of goodwill				0	4,140,000
Operating expenses:
Loss from discontinued operations	(280,000)	(8,945,000)		(4,411,000)	(11,734,000)
Cloverleaf Communications, Inc.
Discontinued Operations [Line Items]
Impairment of intangible assets						2,800,000
Cloverleaf Communications, Inc. | Trade name
Discontinued Operations [Line Items]
Impairment of intangible assets						100,000
AssuredUVS [Member]
Discontinued Operations [Line Items]
Impairment of intangible assets			1,600,000
Impairment of property, plant and equipment			200,000
Impairment of goodwill						4,100,000
Loss from discontinued operations
Net revenue	26,000	266,000		232,000	1,618,000
Cost of goods sold	70,000	3,665,000		2,373,000	4,763,000
Gross profit	(44,000)	(3,399,000)		(2,141,000)	(3,145,000)
Operating expenses:
Research and development	(20,000)	1,122,000		741,000	3,313,000
Sales and marketing	0	145,000		56,000	561,000
General and administrative	204,000	138,000		700,000	571,000
Restructuring charge	53,000	0		772,000	0
Goodwill impairment charge	0	4,140,000		0	4,140,000
Total operating expenses	237,000	5,545,000		2,269,000	8,585,000
Operating loss	(281,000)	(8,944,000)		(4,410,000)	(11,730,000)
Other income (expense), net	1,000	(1,000)		(1,000)	(4,000)
Loss from discontinued operations	(280,000)	(8,945,000)		(4,411,000)	(11,734,000)
AssuredUVS [Member] | Cloverleaf Communications, Inc.
Discontinued Operations [Line Items]
Intangible assets, net - discontinued operations		5,000,000			5,000,000
Property, plant and equipment, net - discontinued operations		1,200,000			1,200,000
Impaired intangible assets		2,900,000			2,900,000
AssuredUVS [Member] | Cloverleaf Communications, Inc. | Software
Discontinued Operations [Line Items]
Intangible assets, net - discontinued operations		4,900,000			4,900,000
Impairment of intangible assets						2,800,000
AssuredUVS [Member] | Cloverleaf Communications, Inc. | Trade name
Discontinued Operations [Line Items]
Intangible assets, net - discontinued operations		100,000			100,000
Impairment of intangible assets						$ 100,000
AssuredUVS [Member] | Cloverleaf Communications, Inc. | Minimum
Discontinued Operations [Line Items]
Property, plant and equipment, estimated useful life - discontinued operations					3 years
AssuredUVS [Member] | Cloverleaf Communications, Inc. | Maximum
Discontinued Operations [Line Items]
Property, plant and equipment, estimated useful life - discontinued operations					5 years