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Debt - Senior Secured Convertible Notes due 2027 (Details)		3 Months Ended		6 Months Ended
	Nov. 17, 2020 USD ($) component $ / shares shares	Jun. 30, 2024 USD ($) $ / shares	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($) $ / shares	Jun. 30, 2023 USD ($)	Dec. 31, 2023 USD ($) $ / shares	Dec. 31, 2021 USD ($)
Line of Credit Facility
Principal balance		$ 1,089,900,000		$ 1,089,900,000		$ 1,130,600,000
Common stock, par value (in dollars per share) | $ / shares		$ 0.01		$ 0.01		$ 0.01
2027 Notes | Convertible Debt
Line of Credit Facility
Principal balance	$ 497,100,000	$ 485,300,000		$ 485,300,000		$ 485,300,000
Stated interest rate (as a percent)	6.00%
Common stock, par value (in dollars per share) | $ / shares	$ 0.01
Percentage of notes initially convertible to common stock	42.00%						41.00%
Repurchased face amount							$ 11,800,000
Minimum qualified cash required	$ 30,000,000.0
Number of components | component	2
Fair value of equity component of debt		279,600,000		279,600,000		279,600,000
Interest expense		7,300,000	$ 7,300,000	14,500,000	$ 14,500,000
Interest paid		14,600,000	14,600,000	14,600,000	14,600,000
Amortization of the discount		3,600,000	3,300,000	7,200,000	6,500,000
Amortization of debt issuance costs		$ 0	$ 0	$ 0	$ 0
Effective interest rate (as a percent)		10.50%		10.50%
2027 Notes | Convertible Debt | Fair Value, Inputs, Level 2
Line of Credit Facility
Debt fair value		$ 521,900,000		$ 521,900,000		$ 395,600,000
2027 Notes | Convertible Debt | Period 1
Line of Credit Facility
Redemption rate	110.00%
Maximum repurchase amount	$ 100,000,000
Total gross leverage ratio	1.5
2027 Notes | Convertible Debt | Period 2
Line of Credit Facility
Redemption rate	130.00%
Maximum repurchase amount	$ 99,400,000
Redemption term	4 years
2027 Notes | Convertible Debt | Scenario, Plan
Line of Credit Facility
Initial conversion rate (in shares) | shares	200
Conversion price (in usd per share) | $ / shares	$ 5.00

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