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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($)
$ in Thousands
Total
Cumulative Effect, Period of Adoption, Adjustment
Common Stock
Additional Paid-in Capital
Accumulated Other Comprehensive Income (Loss)
Accumulated Deficit
Accumulated Deficit
Cumulative Effect, Period of Adoption, Adjustment
Beginning balance (in shares) at Mar. 31, 2018     92,847,354        
Beginning balance at Mar. 31, 2018 $ 218,774 $ 39,901 $ 93 $ 425,790 $ (5,645) $ (201,464) $ 39,901
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Issuance of common stock under stock plans, less withholding (in shares)     3,272,534        
Issuance of common stock under stock plans, less withholding 4,486   $ 3 4,483      
Stock-based compensation expense 45,548     45,548      
Unrealized investment gain (loss) 473       473    
Foreign currency translation adjustment (2,181)       (2,181)    
Equity component of convertible senior notes, net of issuance costs 31,128     31,128      
Net loss (88,739)         (88,739)  
Ending balance (in shares) at Mar. 31, 2019     96,119,888        
Ending balance at Mar. 31, 2019 249,390   $ 96 506,949 (7,353) (250,302)  
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Issuance of common stock under stock plans, less withholding (in shares)     4,452,267        
Issuance of common stock under stock plans, less withholding 7,777   $ 4 7,773      
Issuance of common stock related to acquisition (in shares)     2,606,466        
Issuance of common stock related to acquisition 35,840   $ 3 35,837      
Stock-based compensation expense 71,821     71,821      
Unrealized investment gain (loss) (203)       (203)    
Foreign currency translation adjustment (4,620)       (4,620)    
Equity component of convertible senior notes, net of issuance costs 3,094     3,094      
Net loss (172,368)         (172,368)  
Ending balance (in shares) at Mar. 31, 2020     103,178,621        
Ending balance at Mar. 31, 2020 190,731 $ (2,800) $ 103 625,474 (12,176) (422,670)  
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Issuance of common stock under stock plans, less withholding (in shares)     6,067,672        
Issuance of common stock under stock plans, less withholding 13,269   $ 6 13,263      
Issuance of common stock related to acquisition (in shares)     (111,554)        
Issuance of common stock related to acquisition 8,489     8,489      
Stock-based compensation expense 108,417     108,417      
Unrealized investment gain (loss) 247       247    
Foreign currency translation adjustment 7,736       7,736    
Net loss (165,585)         (165,585)  
Ending balance (in shares) at Mar. 31, 2021     109,134,739        
Ending balance at Mar. 31, 2021 $ 160,504   $ 109 $ 755,643 $ (4,193) $ (591,055) $ (2,800)