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Note 14 - Foreign Revenues and Operations (Tables)
12 Months Ended
Dec. 31, 2012
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]
Year ended December 31,
           
(in thousands)
 
2012
   
2011
 
Foreign Countries:
           
United Kingdom
  $ 1,154     $ 1,352  
Pacific Rim *
    562       483  
Canada
    518       418  
Brazil
    25       79  
Other
    54       43  
Subtotal
    2,313       2,375  
United States
    14,217       13,949  
Total
  $ 16,530     $ 16,324