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10. Supplemental Cash Flow Information (Tables)
 9 Months Ended
Sep. 30, 2013
Supplemental Cash Flow Elements [Abstract]  
Supplemental cash flow information
   

Nine Months Ended

September 30,

  
    2013     2012  
Cash paid for interest   $ 90     $ 1,788  
                 
Cash received from interest   $ 34     $ -  
                 
Notes payable issued or assumed on acquisitions   $ -     $ 1,121  
                 
Conversion of promissory notes   $ -     $ 37