Deferred Revenue (Details) - USD ($)	1 Months Ended				3 Months Ended		12 Months Ended
	Jun. 30, 2021	Sep. 30, 2020	Jan. 31, 2020	Oct. 31, 2014	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2016	Dec. 31, 2021
Deferred Revenue Arrangement [Line Items]
Deferred revenue					$ 7,619,000			$ 8,157,000
Baxter Healthcare Organization
Deferred Revenue Arrangement [Line Items]
Term of agreement				10 years
Upfront payment				$ 20,000,000
Recognized deferred revenue					500,000	$ 500,000
Deferred revenue					4,800,000			5,200,000
Wanbang Biopharmaceutical
Deferred Revenue Arrangement [Line Items]
Upfront payment							$ 4,000,000
Recognized deferred revenue					100,000
Deferred revenue					2,500,000			2,500,000
Sun Pharma Agreements
Deferred Revenue Arrangement [Line Items]
Upfront payment			$ 100,000
Recognized deferred revenue					2,500	2,500
Deferred revenue					77,500			80,000
Jeil Pharma Agreements
Deferred Revenue Arrangement [Line Items]
Upfront payment		$ 200,000
Recognized deferred revenue					2,500	2,500
Deferred revenue					200,000			200,000
Drogsan Agreements
Deferred Revenue Arrangement [Line Items]
Upfront payment	$ 150,000
Recognized deferred revenue					3,750	$ 0
Deferred revenue					$ 140,000			$ 140,000