Comprehensive Loss - Components of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
AOCI Attributable to Parent, Net of Tax
Beginning Balance	$ 250.8
Ending Balance	260.5
Foreign Currency Translation Adjustments
AOCI Attributable to Parent, Net of Tax
Beginning Balance	(1.3)	$ (1.8)
Other comprehensive income (loss) before reclassification	(0.2)	0.2
Ending Balance	(1.5)	(1.6)
Accumulated Other Comprehensive Loss
AOCI Attributable to Parent, Net of Tax
Beginning Balance	(1.3)	(1.8)
Other comprehensive income (loss) before reclassification	(0.2)	0.2
Ending Balance	$ (1.5)	$ (1.6)