CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS’ EQUITY - USD ($) $ in Millions	Total	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive (Loss) Income
Beginning balance (in shares) at Dec. 31, 2023		70,163,703
Beginning balance at Dec. 31, 2023	$ 708.9	$ 0.0	$ 1,814.5	$ (1,096.6)	$ (9.0)
Increase (Decrease) in Stockholders' Deficit [Roll Forward]
Exercise of stock options and distribution of restricted stock units (in shares)		314,385
Exercise of stock options and distribution of restricted stock units	0.1		0.1
Stock-based compensation	14.9		14.9
Net loss	(47.3)			(47.3)
Other comprehensive income (loss)	(0.2)				(0.2)
Ending balance (in shares) at Mar. 31, 2024		70,478,088
Ending balance at Mar. 31, 2024	$ 676.4	$ 0.0	1,829.5	(1,143.9)	(9.2)
Beginning balance (in shares) at Dec. 31, 2024	72,720,866	72,720,866
Beginning balance at Dec. 31, 2024	$ 593.4	$ 0.0	1,898.3	(1,298.8)	(6.1)
Increase (Decrease) in Stockholders' Deficit [Roll Forward]
Exercise of stock options and distribution of restricted stock units (in shares)		492,005
Exercise of stock options and distribution of restricted stock units	1.5		1.5
Stock-based compensation	10.3		10.3
Net loss	(62.4)			(62.4)
Other comprehensive income (loss)	$ 2.7				2.7
Ending balance (in shares) at Mar. 31, 2025	73,212,871	73,212,871
Ending balance at Mar. 31, 2025	$ 545.5	$ 0.0	$ 1,910.1	$ (1,361.2)	$ (3.4)