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12. GEOGRAPHICAL INFORMATION (Tables)
6 Months Ended
Jun. 30, 2014
Segments, Geographical Areas [Abstract]  
Geographic breakdown of revenue
   Three months ended
June 30,
   Six months ended
June 30,
 
   2014   2013   2014   2013 
United States  $6,617,000   $5,213,000   $12,772,000   $10,984,000 
Canada   256,000    319,000    519,000    664,000 
Total revenue  $6,873,000   $5,532,000   $13,291,000   $11,648,000 
Geographic breakdown of long-term tangible assets
   June 30,
2014
   December 31,
2013
 
United States  $3,400,000   $3,220,000 
Canada   23,000    17,000 
Total assets  $3,423,000   $3,237,000