Goodwill and intangible assets - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible asset amortization	$ 1.3	$ 1.2	$ 2.0