Accrued Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Payables and Accruals [Abstract]
Accrued sales commissions and incentives	$ 1,005	$ 91
Accrued warranty expense	314	81	$ 75
Accrued legal and professional fees	151	91
Accrued payroll and related benefits	1,243	541
Separation accrual	96	130
Accrued income taxes	26	0
Accrued other taxes	65	8
Accrued other expenses	17	20
Total accrued liabilities	$ 2,917	$ 962