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Business Segment Data (Tables)
3 Months Ended
Mar. 31, 2013
Segment Reporting Disclosure [Abstract]  
Schedule of Segment Reporting Information, by Segment [Table Text Block]
In thousands
2013 
2012 
Revenues:
   
Digital display sales
$ 2,451 
$ 3,837 
Digital display lease and maintenance
1,645 
1,768 
Total revenues
$ 4,096 
$ 5,605 
Operating (loss) income:
   
Digital display sales
$(1,008)
$(1,141)
Digital display lease and maintenance
262 
 217 
Corporate general and administrative expenses
(463)
(718)
Total operating loss
(1,209)
(1,642)
Interest expense, net
(41)
(51)
Gain on debt extinguishment
 
Change in warrant liabilities
  (68) 
  108 
Loss from continuing operations before income taxes
(1,318)
(1,581)
Income tax expense
(8)
(7)
Loss from continuing operations
$(1,326)
$(1,588)