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Other Current Liabilities - Components of Other Current Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Payables and Accruals [Abstract]    
Accrued expenses $ 2,207 $ 2,519
Taxes 157 117
Warranty provision 316 222
Restructuring liabilities 79 82
Other 37 88
Other current liabilities $ 2,796 $ 3,028