Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Summary of Restated Adjustment of Financial Statements (Details)

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Summary of Significant Accounting Policies - Summary of Restated Adjustment of Financial Statements (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Jan. 01, 2019
Dec. 31, 2018
Accounts receivable, net       $ 2,489
Total current assets $ 176,535     209,946
Deferred revenue—current 19,024     21,574
Deferred revenue, non—current 31,520     44,599
Total liabilities 71,740     91,600
Accumulated deficit (154,251)     $ (150,328)
Revenues 8,629 $ 5,793    
Interest and other expense, net (1,160)      
Net loss (14,250) $ (12,046)    
Accounting Standards Update 2014-09        
Accounts receivable, net     $ 2,489  
Total current assets     209,946  
Deferred revenue—current 22,195   19,450  
Deferred revenue, non—current 38,829   36,396  
Total liabilities 82,220   81,273  
Accumulated deficit (164,731)   (140,001)  
Revenues 7,616      
Interest and other expense, net (300)      
Net loss (14,403)      
Accounting Standards Update 2014-09 | Difference between Revenue Guidance in Effect before and after Topic 606        
Deferred revenue—current (3,171)   (2,124)  
Deferred revenue, non—current (7,309)   (8,203)  
Total liabilities (10,480)   (10,327)  
Accumulated deficit 10,480   $ 10,327  
Revenues 1,013      
Interest and other expense, net 860      
Net loss $ (153)