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Short Term Debt - Short Term Debt Interest (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Debt Disclosure [Abstract]    
Interest paid in cash $ 228 $ 217
Amortization of the RMB Warrants discount 139 217
Amortization of RMB deferred financing costs 126 195
Total interest expense related to the RMB Loan $ 493 629
UBS secured credit line 4
Total interest expense $ 493 $ 633