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CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY - USD ($)
shares in Thousands, $ in Thousands
Total
Cumulative Effect, Period of Adoption, Adjustment
Common Stock
Additional Paid-in Capital
Accumulated Deficit
Accumulated Deficit
Cumulative Effect, Period of Adoption, Adjustment
Accumulated Other Comprehensive Income (Loss)
Treasury Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Cumulative effect adjustment from adoption of ASU 2014-09 $ 98,386 $ 12,396 $ 1 $ 360,403 $ (257,025) $ 12,396 $ (123)  
Treasury stock, value (4,870)              
Beginning balance at Dec. 31, 2017 98,386 12,396 $ 1 360,403 (257,025) 12,396 (123)  
Beginning balance (in shares) at Dec. 31, 2017     71,692          
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Cumulative effect adjustment from adoption of ASU 2014-09 103,883 $ 12,396 $ 1 381,142 (272,246) $ 12,396 (144)  
Stock-based compensation expense 17,038     17,038        
Common stock issued under employee equity incentive plans (in shares)     2,609          
Common stock issued under employee equity incentive plans 3,701     3,701        
Unrealized loss on marketable securities, net of tax (21)           (21)  
Net loss (27,617)       (27,617)      
Ending balance (in shares) at Dec. 31, 2018     74,301          
Ending balance at Dec. 31, 2018 $ 103,883   $ 1 381,142 (272,246)   (144)  
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Accounting Standards Update [Extensible List] us-gaap:AccountingStandardsUpdate201409Member              
Cumulative effect adjustment from adoption of ASU 2014-09 $ 103,883   1 381,142 (272,246)   (144)  
Treasury stock, value (4,870)              
Cumulative effect adjustment from adoption of ASU 2014-09 108,787   $ 1 403,470 (290,065)   251  
Stock-based compensation expense 16,529     16,529        
Common stock issued under employee equity incentive plans (in shares)     3,279          
Common stock issued under employee equity incentive plans 5,799     5,799        
Unrealized loss on marketable securities, net of tax 395           395  
Net loss (17,819)       (17,819)      
Ending balance (in shares) at Dec. 31, 2019     77,580          
Ending balance at Dec. 31, 2019 108,787   $ 1 403,470 (290,065)   251  
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Cumulative effect adjustment from adoption of ASU 2014-09 108,787   1 403,470 (290,065)   251  
Treasury stock, value (4,870)              
Cumulative effect adjustment from adoption of ASU 2014-09 115,974   $ 1 425,534 (272,249)   98  
Stock-based compensation expense 12,473     12,473        
Common stock issued under employee equity incentive plans (in shares)     3,666          
Common stock issued under employee equity incentive plans $ 9,591     9,591        
Repurchase of common stock (in shares) (4,900)              
Repurchase of common stock $ (32,540)             $ (32,540)
Unrealized loss on marketable securities, net of tax (153)           (153)  
Net loss 17,816       17,816      
Ending balance (in shares) at Dec. 31, 2020     76,346          
Ending balance at Dec. 31, 2020 115,974   $ 1 425,534 (272,249)   98  
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Cumulative effect adjustment from adoption of ASU 2014-09 115,974   $ 1 $ 425,534 $ (272,249)   $ 98  
Treasury stock, value $ (37,410)