CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY (UNAUDITED) - USD ($) $ in Millions | Total | Cumulative Effect, Period of Adoption, Adjustment | Common Stock | Additional Paid-in Capital | Additional Paid-in Capital Cumulative Effect, Period of Adoption, Adjustment | Accumulated Deficit | Accumulated Deficit Cumulative Effect, Period of Adoption, Adjustment | Accumulated Other Comprehensive (Loss) Income |
Beginning balance (in shares) at Dec. 31, 2020 | | | 66,017,000 | | | | | |
Beginning balance at Dec. 31, 2020 | $ 603.6 | | $ 0.1 | $ 1,264.3 | | $ (666.3) | | $ 5.5 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | | |
Exercise of options to purchase common stock (in shares) | | | | 164,000 | | | | |
Exercise of options to purchase common stock | | | | $ 6.2 | | | | |
Issuance of shares for employee stock purchase plan (in shares) | | | 17,000 | | | | | |
Issuance of shares for employee stock purchase plan | 3.8 | | | 3.8 | | | | |
Stock-based compensation expense | 17.6 | | | 17.6 | | | | |
Restricted stock units vested, net of shares withheld for taxes (in shares) | | | 170,000 | | | | | |
Restricted stock units vested, net of shares withheld for taxes | (27.3) | | | (27.3) | | | | |
Extinguishment of conversion feature, net of issuance costs | (737.7) | | | (737.7) | | | | |
Issuance of shares for debt extinguishment (in shares) | | | 2,242,000 | | | | | |
Issuance of shares for debt extinguishment | 622.7 | | | 622.7 | | | | |
Net loss | (25) | | | | | (25) | | |
Other comprehensive income (loss) | (4.8) | | | | | | | (4.8) |
Ending balance (in shares) at Jun. 30, 2021 | | | 68,610,000 | | | | | |
Ending balance at Jun. 30, 2021 | 459.1 | | $ 0.1 | 1,149.6 | | (691.3) | | 0.7 |
Beginning balance (in shares) at Dec. 31, 2020 | | | 66,017,000 | | | | | |
Beginning balance at Dec. 31, 2020 | $ 603.6 | | $ 0.1 | 1,264.3 | | (666.3) | | 5.5 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | | |
Accounting Standards Update [Extensible Enumeration] | Accounting Standards Update 2020-06 | | | | | | | |
Ending balance (in shares) at Dec. 31, 2021 | 69,178,691 | | 69,179,000 | | | | | |
Ending balance at Dec. 31, 2021 | $ 556.3 | $ (147.1) | $ 0.1 | 1,207.9 | $ (207.7) | (649.5) | $ 60.6 | (2.2) |
Beginning balance (in shares) at Mar. 31, 2021 | | | 66,213,000 | | | | | |
Beginning balance at Mar. 31, 2021 | 585.3 | | $ 0.1 | 1,248.3 | | (666.3) | | 3.2 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | | |
Exercise of options to purchase common stock (in shares) | | | 121,000 | | | | | |
Exercise of options to purchase common stock | 4.7 | | | 4.7 | | | | |
Issuance of shares for employee stock purchase plan (in shares) | | | 17,000 | | | | | |
Issuance of shares for employee stock purchase plan | 3.8 | | | 3.8 | | | | |
Stock-based compensation expense | 9 | | | 9 | | | | |
Restricted stock units vested, net of shares withheld for taxes (in shares) | | | 17,000 | | | | | |
Restricted stock units vested, net of shares withheld for taxes | (1.2) | | | (1.2) | | | | |
Extinguishment of conversion feature, net of issuance costs | (737.7) | | | (737.7) | | | | |
Issuance of shares for debt extinguishment (in shares) | | | 2,242,000 | | | | | |
Issuance of shares for debt extinguishment | 622.7 | | | 622.7 | | | | |
Net loss | (25) | | | | | (25) | | |
Other comprehensive income (loss) | (2.5) | | | | | | | (2.5) |
Ending balance (in shares) at Jun. 30, 2021 | | | 68,610,000 | | | | | |
Ending balance at Jun. 30, 2021 | $ 459.1 | | $ 0.1 | 1,149.6 | | (691.3) | | 0.7 |
Beginning balance (in shares) at Dec. 31, 2021 | 69,178,691 | | 69,179,000 | | | | | |
Beginning balance at Dec. 31, 2021 | $ 556.3 | $ (147.1) | $ 0.1 | 1,207.9 | $ (207.7) | (649.5) | $ 60.6 | (2.2) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | | |
Exercise of options to purchase common stock (in shares) | | | 52,000 | | | | | |
Exercise of options to purchase common stock | 1.9 | | | 1.9 | | | | |
Issuance of shares for employee stock purchase plan (in shares) | | | 27,000 | | | | | |
Issuance of shares for employee stock purchase plan | 4.9 | | | 4.9 | | | | |
Stock-based compensation expense | 20.7 | | | 20.7 | | | | |
Restricted stock units vested, net of shares withheld for taxes (in shares) | | | 128,000 | | | | | |
Restricted stock units vested, net of shares withheld for taxes | (16.5) | | | (16.5) | | | | |
Net loss | (7.2) | | | | | (7.2) | | |
Other comprehensive income (loss) | $ 9.4 | | | | | | | 9.4 |
Ending balance (in shares) at Jun. 30, 2022 | 69,386,057 | | 69,386,000 | | | | | |
Ending balance at Jun. 30, 2022 | $ 422.4 | | $ 0.1 | 1,011.2 | | (596.1) | | 7.2 |
Beginning balance (in shares) at Mar. 31, 2022 | | | 69,320,000 | | | | | |
Beginning balance at Mar. 31, 2022 | 446.7 | | $ 0.1 | 995.5 | | (561.1) | | 12.2 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | | |
Exercise of options to purchase common stock (in shares) | | | 24,000 | | | | | |
Exercise of options to purchase common stock | 0.8 | | | 0.8 | | | | |
Issuance of shares for employee stock purchase plan (in shares) | | | 27,000 | | | | | |
Issuance of shares for employee stock purchase plan | 4.9 | | | 4.9 | | | | |
Stock-based compensation expense | 11.2 | | | 11.2 | | | | |
Restricted stock units vested, net of shares withheld for taxes (in shares) | | | 15,000 | | | | | |
Restricted stock units vested, net of shares withheld for taxes | (1.2) | | | (1.2) | | | | |
Net loss | (35) | | | | | (35) | | |
Other comprehensive income (loss) | $ (5) | | | | | | | (5) |
Ending balance (in shares) at Jun. 30, 2022 | 69,386,057 | | 69,386,000 | | | | | |
Ending balance at Jun. 30, 2022 | $ 422.4 | | $ 0.1 | $ 1,011.2 | | $ (596.1) | | $ 7.2 |