Organization and significant accounting policies - Schedule of Revenues By Product Line (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Disaggregation of Revenue [Line Items]
Total product, service, and rental revenue	$ 143,271	$ 161,759	$ 119,156
Freezer and thaw
Disaggregation of Revenue [Line Items]
Total product, service, and rental revenue	50,622	66,682	56,620
Cell processing
Disaggregation of Revenue [Line Items]
Total product, service, and rental revenue	65,772	68,509	44,965
Biostorage services
Disaggregation of Revenue [Line Items]
Total product, service, and rental revenue	1,301	809	328
Freezer and thaw
Disaggregation of Revenue [Line Items]
Total product, service, and rental revenue	1,024	74	0
Biostorage services
Disaggregation of Revenue [Line Items]
Total product, service, and rental revenue	16,527	15,234	9,817
Biostorage services
Disaggregation of Revenue [Line Items]
Total product, service, and rental revenue	$ 8,025	$ 10,451	$ 7,426