Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Summary of Stock-based Compensation Expense Recognized in Income Statement (Details)

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Stockholders' Equity - Summary of Stock-based Compensation Expense Recognized in Income Statement (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Class Of Stock [Line Items]        
Stock-based compensation expense $ 1,277 $ 1,779 $ 4,061 $ 5,365
Cost of Revenue        
Class Of Stock [Line Items]        
Stock-based compensation expense 97 199 326 484
Research and Development        
Class Of Stock [Line Items]        
Stock-based compensation expense 173 227 493 604
Sales and Marketing        
Class Of Stock [Line Items]        
Stock-based compensation expense 459 336 1,071 1,026
General and Administrative        
Class Of Stock [Line Items]        
Stock-based compensation expense $ 548 $ 1,017 $ 2,171 $ 3,251