Revenue (Details)	3 Months Ended
	Mar. 31, 2021 USD ($) pharmacy	Mar. 31, 2020 USD ($)	Dec. 31, 2020 USD ($)
CONCENTRATION
Number of specialty pharmacies | pharmacy	2
Allowance for doubtful accounts	$ 6,100,000		$ 5,300,000
Change in estimate of uncollectible (percent)	0.50%
Change in revenue recognized due to 0.5% change in uncollectible percentage	$ 200,000
Increase (decrease) to revenues	33,627,000	$ 26,678,000
Other revenue recognized	941,000	0
NexoBrid
CONCENTRATION
Other revenue recognized	900,000	0
NexoBrid | Provider or Facility
CONCENTRATION
Other revenue recognized	941,000	0
Accounting Standards Update 2014-09 | Difference between Revenue Guidance in Effect before and after Topic 606
CONCENTRATION
Increase (decrease) to revenues	477,000	$ 1,207,000
COVID-19 potential impacts
CONCENTRATION
Allowance related to the potential impacts of COVID-19 (less than)			$ 100,000
Additional allowance recorded	$ 0