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Goodwill and intangible assets - Goodwill (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($)
Goodwill [Roll Forward]
Beginning balance	$ 58,449
Ending balance	224,741
Global Cooling
Goodwill [Roll Forward]
Goodwill related to acquisition	137,822
Sexton Biotechnologies, Inc.
Goodwill [Roll Forward]
Goodwill related to acquisition	$ 28,470

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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