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Long Term Debt (Tables)
 12 Months Ended
Dec. 31, 2013
Debt Disclosure [Abstract]  
Long Term Debt - Summary RMB Loan
  RMB RMB RMB
  (in thousands) Loan borrowing Warrant discount Long-term
Debt
      Beginning balance December 31, 2011 $     -    $      -   $     -   
        Initial borrowing, August 21, 2012 1,500  (650) 850 
        Amortization of discount to interest cost  -      77  77 
      Ending balance December 31, 2012 $1,500  $(573) 927 
        Borrowing 2,000  -   2,000 
        Amortization of discount to interest cost  -      217  217 
      Ending balance December 31, 2013 $3,500  $(356) $3,144 
Long Term Debt - Interest RMB Loan
(in thousands) Year ended
December 31,
  2013 2012
Interest paid in cash $ 165  $ 30 
Amortization of the RMB Warrants discount 217  77 
Amortization of RMB deferred financing costs  196    70 
  Total interest expense related to the RMB Loan $578  $177