Debt - Convertible Senior Notes Due 2025 (Details) $ / shares in Units, $ in Thousands	May 14, 2018 USD ($) $ / shares	Dec. 31, 2024 USD ($)	Sep. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Debt Instrument [Line Items]
Amount outstanding		$ 333,373	$ 333,373	$ 367,762
Unamortized debt issuance costs		(5,663)	(6,045)	(7,232)
Senior Notes
Debt Instrument [Line Items]
Amount outstanding		333,373
2025 Convertible Notes | Senior Notes
Debt Instrument [Line Items]
Principle amount	$ 172,500
Repurchased principal amount					$ 69,100
Repurchase price					$ 62,900
Amount outstanding		$ 103,373	103,373	103,373
Stated interest rate	2.375%
Effective interest rate		2.88%
Conversion rate per $1,000 principal amount	0.0628931
Conversion price, per share (in dollars per share) | $ / shares	$ 15.90
Unamortized debt issuance costs		$ (168)	$ (301)	$ (678)