Revenue - Summary of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Disaggregation of Revenue [Line Items]
Product sales, net	$ 52,662	$ 45,922	$ 103,943	$ 86,939
Total revenue	52,662	45,922	103,943	86,939
Change in estimates related to prior periods
Disaggregation of Revenue [Line Items]
Product sales, net	543	1,119	1,995	369
M A C I Implants and kits
Disaggregation of Revenue [Line Items]
Product sales, net	44,135	36,336	84,316	70,526
Through Intermediary | MACI implants and kits | Contract rate
Disaggregation of Revenue [Line Items]
Product sales, net	30,704	22,377	58,083	45,331
Through Intermediary | MACI implants and kits | Time-and-materials contract
Disaggregation of Revenue [Line Items]
Product sales, net	3,332	4,015	6,529	8,004
Time-and-materials contract | MACI implants and kits | Time-and-materials contract
Disaggregation of Revenue [Line Items]
Product sales, net	965	1,045	2,150	1,538
Provider or Facility | MACI implants and kits | Contract rate
Disaggregation of Revenue [Line Items]
Product sales, net	8,099	7,252	14,501	14,222
Provider or Facility | NexoBrid
Disaggregation of Revenue [Line Items]
NexoBrid	769	0	1,205	0
Directly to consumer | Biopsy kits
Disaggregation of Revenue [Line Items]
Product sales, net	492	528	1,058	1,062
Directly to consumer | Epicel
Disaggregation of Revenue [Line Items]
Product sales, net	$ 7,758	$ 9,586	$ 18,422	$ 16,413