Collaboration and Licensing Revenue - Castle Creek Collaborations (Details) $ in Thousands	1 Months Ended
Feb. 29, 2020 USD ($)
Castle Creek Biosciences, Inc. \| Collaboration and licensing agreements
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenues	$ 10,000

Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130549-203045

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration