Annual report pursuant to Section 13 and 15(d)

Common Stock, Stock-Based Awards and Warrants - Schedule of Stock-Based Compensation Expense (Details)

v3.19.1
Common Stock, Stock-Based Awards and Warrants - Schedule of Stock-Based Compensation Expense (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]      
Share-based compensation expense $ 12,817 $ 7,585 $ 10,747
Unrecognized employee related stock-based compensation $ 26,500    
Unrecognized employee related stock-based compensation, weighted average period 2 years 2 months 19 days    
Cost of sales      
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]      
Share-based compensation expense $ 547 300 313
Sales and marketing expenses      
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]      
Share-based compensation expense 498 423 629
Product development      
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]      
Share-based compensation expense 753 634 994
General and administrative      
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]      
Share-based compensation expense $ 11,019 $ 6,228 $ 8,811