Business Segment Data (Details) - Schedule of Segment Reporting Information, by Segment (USD $)	3 Months Ended	6 Months Ended	12 Months Ended
	Mar. 31, 2013	Jun. 30, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2011
Revenues:
Revenues			$ 23,021,000		$ 23,757,000
Operating income (loss):
Operating Income (Loss)			(4,910,000)		(4,906,000)
Interest expense, net			(297,000)		(1,217,000)
Gain on debt extinguishment		60,000	60,000		8,796,000
Change in warrant liabilities			4,041,000		(3,655,000)
Loss from continuing operations before income taxes			(1,106,000)		(982,000)
Income tax (expense) benefit			(23,000)		8,000
Loss from continuing operations			(1,129,000)		(974,000)
Loss from discontinued operations	1,000,000		(236,000)	(444,000)	(444,000)
Net loss			(1,365,000)		(1,418,000)
Assets:
Assets			21,345,000	25,955,000	25,955,000
Depreciation and amortization:
Depreciation and amortization			4,104,000		4,548,000
Capital expenditures:
Capital expenditures			556,000		472,000
Identifiable Assets [Member] | Digital Display Sales [Member]
Assets:
Assets			6,504,000	7,460,000	7,460,000
Identifiable Assets [Member] | Digital Display Lease and Maintenance [Member]
Assets:
Assets			13,677,000	17,386,000	17,386,000
Identifiable Assets [Member]
Assets:
Assets			20,181,000	24,846,000	24,846,000
Digital Display Sales [Member]
Revenues:
Revenues			16,065,000		15,990,000
Operating income (loss):
Operating Income (Loss)			(2,822,000)		(2,590,000)
Depreciation and amortization:
Depreciation and amortization			135,000		179,000
Capital expenditures:
Capital expenditures			62,000		37,000
Digital Display Lease and Maintenance [Member]
Revenues:
Revenues			6,956,000		7,767,000
Operating income (loss):
Operating Income (Loss)			697,000		319,000
Depreciation and amortization:
Depreciation and amortization			3,804,000		4,303,000
Capital expenditures:
Capital expenditures			487,000		430,000
General Corporate [Member]
Operating income (loss):
Operating Income (Loss)			(2,785,000)		(2,635,000)
Assets:
Assets			1,164,000	1,109,000	1,109,000
Depreciation and amortization:
Depreciation and amortization			165,000		66,000
Capital expenditures:
Capital expenditures			$ 7,000		$ 5,000