Business Segment Data (Details) - Business Segment Data (USD $)	1 Months Ended	3 Months Ended		6 Months Ended
	Nov. 30, 2011	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Segment Reporting Information [Line Items]
Revenue		$ 4,787,000	$ 6,836,000	$ 8,883,000	$ 12,441,000
Operating Income (Loss)		(1,058,000)	(1,011,000)	(2,267,000)	(2,653,000)
Interest expense, net		(42,000)	(43,000)	(83,000)	(94,000)
Loss on sale of receivables		(348,000)		(348,000)
Gain on debt extinguishment	8,800,000		56,000		60,000
Change in warrant liabilities		732,000	1,789,000	664,000	1,897,000
(Loss) income from continuing operations before income taxes		(716,000)	791,000	(2,034,000)	(790,000)
Income tax expense		(8,000)	(7,000)	(16,000)	(14,000)
(Loss) income from continuing operations		(724,000)	784,000	(2,050,000)	(804,000)
Digital Display [Member]
Segment Reporting Information [Line Items]
Revenue		3,287,000	5,014,000	5,738,000	8,851,000
Operating Income (Loss)		(769,000)	(369,000)	(1,777,000)	(1,510,000)
Digital Display Lease And Maintenance [Member]
Segment Reporting Information [Line Items]
Revenue		1,500,000	1,822,000	3,145,000	3,590,000
Operating Income (Loss)		81,000	151,000	343,000	368,000
Corporate General And Administrative Expenses [Member]
Segment Reporting Information [Line Items]
Operating Income (Loss)		$ (370,000)	$ (793,000)	$ (833,000)	$ (1,511,000)