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CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($)
$ in Thousands
Total
Common stock and paid-in capital
Accumulated deficit
Accumulated other comprehensive income (loss)
Balance, beginning of period at Dec. 31, 2019   $ 458,316 $ (185,181) $ (923)
Issuance of common stock from exercise of equity awards and employee stock purchase plan   1,979    
Payment of withholding taxes related to net share settlement of equity awards   (34,267)    
Stock-based compensation expense   7,515    
Net income $ 68,936   68,936  
Foreign currency translation adjustments (168)     (168)
Balance, end of period at Mar. 31, 2020 316,207 433,543 (116,245) (1,091)
Balance, beginning of period at Dec. 31, 2020 483,993 534,745 (51,186) 434
Issuance of common stock from exercise of equity awards and employee stock purchase plan   214    
Payment of withholding taxes related to net share settlement of equity awards   (9,185)    
Equity component of convertible notes issued, net of tax   207,962    
Cost of convertible notes hedge related to the convertible notes issued, net of tax   (213,322)    
Sale of warrants related to the convertible notes issued   220,800    
Equity component of partial settlement of convertible notes   (966,483)    
Cost of reacquired equity component on partial settlement of convertible notes   962,114    
Stock-based compensation expense   14,844    
Net income 31,698   31,698  
Foreign currency translation adjustments 206     206
Balance, end of period at Mar. 31, 2021 $ 732,841 $ 751,689 $ (19,488) $ 640