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Short Term Debt - Short Term Debt Interest (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
RMB Interest        
Interest paid in cash $ 95 $ 54 $ 228 $ 150
Amortization of the RMB Warrants discount 31 54 139 162
Amortization of RMB deferred financing costs 28 49 126 147
Total interest expense related to the RMB Loan 154 157 493 459
UBS secured credit line $ 95 $ 54 $ 228 150
UBS Interest        
Interest paid in cash 4
UBS secured credit line $ 4