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Consolidated Statements of Stockholders' Equity - USD ($)
shares in Thousands, $ in Thousands
Common Stock
Additional Paid-in Capital
2025 Notes
Additional Paid-in Capital
2027 Notes
Additional Paid-in Capital
Cumulative Effect, Period of Adoption, Adjustment
Additional Paid-in Capital
Accumulated Deficit
Cumulative Effect, Period of Adoption, Adjustment
Accumulated Deficit
Accumulated Other Comprehensive Income
2025 Notes
2027 Notes
Cumulative Effect, Period of Adoption, Adjustment
Total
Balance at the beginning of the period at Dec. 31, 2019 $ 490       $ 1,071,058   $ (698,930) $ 1,894       $ 374,512
Balance (in shares) at Dec. 31, 2019 48,994                      
Increase (Decrease) in Stockholders' Equity                        
Net income (loss)             (8,391)         (8,391)
Other comprehensive income (loss), net of tax               (48)       (48)
Share-based compensation expense         12,703             12,703
Net issuance under employee stock plans $ 7       549             556
Net issuance under employee stock plans (in shares) 730                      
Extinguishment of equity component of repurchased/exchanged 2023 Notes         (14,714)             (14,714)
Equity component of Notes   $ 20,706 $ 33,363           $ 20,706 $ 33,363    
Purchase of capped calls         (10,313)             (10,313)
Balance at the end of the period at Dec. 31, 2020 $ 497       1,113,352   (707,321) 1,846       408,374
Balance (in shares) at Dec. 31, 2020 49,724                      
Increase (Decrease) in Stockholders' Equity                        
Net income (loss)             26,038         26,038
Other comprehensive income (loss), net of tax               (363)       (363)
Share-based compensation expense         15,249             15,249
Net issuance under employee stock plans $ 10       (5,600)             (5,590)
Net issuance under employee stock plans (in shares) 929                      
Extinguishment of equity component of repurchased/exchanged 2023 Notes         (6,080)             (6,080)
Balance at the end of the period at Dec. 31, 2021 $ 507     $ (56,800) 1,116,921 $ 12,540 (681,283) 1,483     $ (44,260) 437,628
Balance (in shares) at Dec. 31, 2021 50,653                      
Increase (Decrease) in Stockholders' Equity                        
Net income (loss)             166,942         166,942
Other comprehensive income (loss), net of tax               (555)       (555)
Share-based compensation expense         22,994             22,994
Net issuance under employee stock plans $ 10       (4,935)             (4,925)
Net issuance under employee stock plans (in shares) 1,007                      
Balance at the end of the period at Dec. 31, 2022 $ 517       $ 1,078,180   $ (501,801) $ 928       $ 577,824
Balance (in shares) at Dec. 31, 2022 51,660