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12. GEOGRAPHICAL INFORMATION (Tables)
9 Months Ended
Sep. 30, 2014
Segments, Geographical Areas [Abstract]  
Geographic breakdown of revenue
   Three months ended
September 30,
   Nine months ended
September 30,
 
   2014   2013   2014   2013 
United States  $5,637,000   $5,216,000   $18,408,000   $16,200,000 
Canada   368,000    310,000    888,000    974,000 
Total revenue  $6,005,000   $5,526,000   $19,296,000   $17,174,000 
Geographic breakdown of long-term tangible assets
   September 30,
2014
   December 31,
2013
 
United States  $3,302,000   $3,220,000 
Canada   32,000    17,000 
Total assets  $3,334,000   $3,237,000