Other non-current Assets (Details) $ in Thousands		3 Months Ended				6 Months Ended
	Apr. 01, 2016 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2022 USD ($) payment Payment	Jun. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)
Acquired Finite-Lived Intangible Assets [Line Items]
Royalty receivable		$ 5,000				$ 5,000		$ 6,000
Other		897				897		903
Total other non-current assets		5,897				5,897		$ 6,903
Revenues		13,265	$ 15,345			$ 25,535	$ 26,467
Number of guaranteed royalty payments | payment						8
License agreement with Sunovion Pharmaceuticals, Inc.
Acquired Finite-Lived Intangible Assets [Line Items]
Revenues	$ 22,000
Minimum annual royalty receivable		$ 1,000		$ 1,000		$ 1,000
Number of annual royalty payments receivable | Payment						5
Royalty
Acquired Finite-Lived Intangible Assets [Line Items]
Revenues						$ (823)
Royalty | License agreement with Sunovion Pharmaceuticals, Inc.
Acquired Finite-Lived Intangible Assets [Line Items]
Revenues				$ 8,000	$ 8,000