Condensed Consolidated Statements of Stockholders' Equity - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Additional Paid-in Capital	Treasury Stock	Accumulated Deficit
Beginning balance (in shares) at Dec. 31, 2024		17.5
Beginning balance at Dec. 31, 2024	$ (10.5)	$ 0.2	$ 557.5	$ (5.8)	$ (562.4)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Restricted stock, net of forfeitures	0.8		0.8
Purchase of treasury stock	(0.4)			(0.4)
Issuance of common stock, net of cost (in shares)		0.6
Issuance of common stock, net of cost	0.4	$ 0.0	0.4
Issuance of warrants	11.0		11.0
Net loss	(27.9)				(27.9)
Ending balance (in shares) at Mar. 31, 2025		18.1
Ending balance at Mar. 31, 2025	(26.6)	$ 0.2	569.7	(6.2)	(590.3)
Beginning balance (in shares) at Dec. 31, 2025		18.9
Beginning balance at Dec. 31, 2025	(74.2)	$ 0.2	571.3	(6.2)	(639.5)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Restricted stock, net of forfeitures (in shares)		(0.1)
Restricted stock, net of forfeitures	0.3	$ 0.0	0.3
Purchase of treasury stock	(0.2)			(0.2)
Issuance of common stock, net of cost (in shares)		0.4
Issuance of common stock, net of cost	0.0	$ 0.0	0.0
Issuance of warrants	2.0		2.0
Exercise of warrants (in shares)		1.3
Exercise of warrants	0.0	$ 0.0
Net loss	(24.0)				(24.0)
Ending balance (in shares) at Mar. 31, 2026		20.5
Ending balance at Mar. 31, 2026	$ (96.1)	$ 0.2	$ 573.6	$ (6.4)	$ (663.5)