Business Acquisitions - Schedule of Supplemental Pro-Forma Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Business Acquisition [Line Items]
Total pro-forma revenues	$ 475.4	$ 459.7	$ 395.6
Total pro-forma net (loss) income	(35.0)	1.7	(6.6)
Generis Group [Member]
Business Acquisition [Line Items]
Total pro-forma revenues	11.9	16.7	0.0
Total pro-forma net (loss) income	1.8	1.4	0.0
This is Beyond Ltd [Member]
Business Acquisition [Line Items]
Total pro-forma revenues	0.1	32.9	0.0
Total pro-forma net (loss) income	(5.4)	(0.2)	0.0
Insurtech [Member]
Business Acquisition [Line Items]
Total pro-forma revenues	0.0	8.9	0.0
Total pro-forma net (loss) income	(0.7)	(0.6)	0.0
Plant Based World [Member]
Business Acquisition [Line Items]
Total pro-forma revenues	0.0	1.5	0.0
Total pro-forma net (loss) income	0.0	(0.3)	0.0
Hotel Interactive [Member]
Business Acquisition [Line Items]
Total pro-forma revenues	0.0	0.0	7.9
Total pro-forma net (loss) income	0.0	0.0	0.8
Other 2024 Acquisitions [Member]
Business Acquisition [Line Items]
Total pro-forma revenues	0.0	0.9	4.9
Total pro-forma net (loss) income	0.0	(0.8)	0.8
Emerald Revenue [Member]
Business Acquisition [Line Items]
Total pro-forma revenues	463.4	398.8	382.8
Emerald Net (Loss) Income [Member]
Business Acquisition [Line Items]
Total pro-forma net (loss) income	$ (30.7)	$ 2.2	$ (8.2)