Quarterly report pursuant to Section 13 or 15(d)

Equity Incentive Plans - Schedule of Stock-Based Compensation Expense Recorded in Condensed Consolidated Statements of Operations (Details)

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Equity Incentive Plans - Schedule of Stock-Based Compensation Expense Recorded in Condensed Consolidated Statements of Operations (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]        
Stock-based compensation expense $ 52 $ 17 $ 75 $ 34
Cost of Revenue        
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]        
Stock-based compensation expense 9 3 10 6
Sale and Marketing        
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]        
Stock-based compensation expense 15 1 20 3
Research and Development        
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]        
Stock-based compensation expense 9 5 16 9
General and Administrative        
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]        
Stock-based compensation expense $ 19 $ 8 $ 29 $ 16