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Leased Equipment under Capital Leases
3 Months Ended
Mar. 31, 2013
Leased Equipment under Capital Leases [Abstract]  
Leased Equipment under Capital Leases [Text Block]
12. Leased Equipment under Capital Leases
 
   
March 31, 2013
  
December 31, 2012
 
Leased equipment under capital leases
      
Leased equipment under capital leases
 $175,793  $84,650 
Less: payments under capital lease obligations
  14,813   16,116 
Leased equipment under capital leases, net
 $160,980  $68,534 


The Company has capital leases with interest rates ranging from 6.78% to 12.34% and maturity dates from June 2015 through January 2018.