Revenue - Summary of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Disaggregation of Revenue [Line Items]
Product sales, net	$ 51,281	$ 41,017
Total revenue	51,281	41,017
Change in estimates related to prior periods
Disaggregation of Revenue [Line Items]
Product sales, net	1,580	52
M A C I Implants and kits
Disaggregation of Revenue [Line Items]
Product sales, net	40,181	34,190
Through Intermediary | MACI implants and kits | Contract rate
Disaggregation of Revenue [Line Items]
Product sales, net	27,196	22,698
Through Intermediary | MACI implants and kits | Time-and-materials contract
Disaggregation of Revenue [Line Items]
Product sales, net	3,253	3,485
Time-and-materials contract | MACI implants and kits | Time-and-materials contract
Disaggregation of Revenue [Line Items]
Product sales, net	1,185	501
Provider or Facility | MACI implants and kits | Contract rate
Disaggregation of Revenue [Line Items]
Product sales, net	6,402	6,919
Provider or Facility | NexoBrid
Disaggregation of Revenue [Line Items]
NexoBrid	436	0
Directly to consumer | Biopsy kits
Disaggregation of Revenue [Line Items]
Product sales, net	565	535
Directly to consumer | Epicel
Disaggregation of Revenue [Line Items]
Product sales, net	$ 10,664	$ 6,827