Business Segment Data (Details) - Business Segment Data - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Revenues:
Revenues	$ 23,567	$ 24,359
Operating income (loss):
Operating Income (Loss)	(2,152)	(4,488)
Interest expense, net	(306)	(240)
Gain on foreign currency exchange	478	$ 236
Gain on extinguishment of debt	314
Warrant expense and change in warrant liabilities	(60)	$ (107)
Loss before income taxes	(1,726)	(4,599)
Income tax expense	(23)	(29)
Net loss	(1,749)	(4,628)
Assets:
Assets	12,990	15,245
Depreciation and amortization:
Depreciation and amortization	2,443	3,003
Capital expenditures:
Capital expenditures	235	127
Operating Segments [Member]
Assets:
Assets	12,443	14,594
Corporate, Non-Segment [Member]
Operating income (loss):
Operating Income (Loss)	(3,386)	(3,544)
Assets:
Assets	547	651
Depreciation and amortization:
Depreciation and amortization	75	13
Capital expenditures:
Capital expenditures	5	75
Digital Display Sales [Member] | Operating Segments [Member]
Revenues:
Revenues	19,994	19,479
Operating income (loss):
Operating Income (Loss)	574	(1,292)
Assets:
Assets	6,955	6,792
Depreciation and amortization:
Depreciation and amortization	100	122
Capital expenditures:
Capital expenditures	169	8
Digital Display Lease And Maintenance [Member] | Operating Segments [Member]
Revenues:
Revenues	3,573	4,880
Operating income (loss):
Operating Income (Loss)	660	348
Assets:
Assets	5,488	7,802
Depreciation and amortization:
Depreciation and amortization	2,268	2,868
Capital expenditures:
Capital expenditures	$ 61	$ 44