Note B - Summary of Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands						3 Months Ended
	May 07, 2021	Apr. 08, 2021	Mar. 02, 2021	Sep. 03, 2019	Mar. 20, 2012	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021	Dec. 31, 2020	Jul. 31, 2020
Revenue from Contract with Customer, Including Assessed Tax						$ 3,965	$ 12,117
Consulting Services [Member]
Revenue from Contract with Customer, Including Assessed Tax						0	500
Deferred Revenue, Total						0			$ 0
Accounts Receivable, after Allowance for Credit Loss, Current, Total						100		$ 100
GPC Member | License [Member]
Revenue from Contract with Customer, Including Assessed Tax	$ 10,000	$ 10,000	$ 10,000	$ 10,000
Revenue Recognition, Milestone Method, Revenue to be Recognized		$ 10,000		63,000
Revenue Recognition, Milestone Method, Additional Revenue to be Recognized	$ 590,000			$ 420,000
Contract with Customer, Liability, Revenue Recognized							10,000
Deferred Revenue, Total						0		0
Accounts Receivable, after Allowance for Credit Loss, Current, Total						100		100
Aquestive Therapeutics [Member] | License [Member]
Revenue from Contract with Customer, Including Assessed Tax						100	10,000
Royalty Revenue, Percent					10.00%
Royalty Expense							1,000
Corium, Inc [Member]
Accounts Receivable, after Allowance for Credit Loss, Current, Total						3,000		1,200
Corium, Inc [Member] | Consulting Services [Member]
Revenue from Contract with Customer, Including Assessed Tax						3,500	$ 1,600
Deferred Revenue, Total						$ 0		$ 400
Consulting Agreement, Maximum Amount to be Received										$ 15,600
Contract with Customer, Asset, after Allowance for Credit Loss, Total										13,600
Consulting Agreement, Conditional Milestone Achievement to be Received										$ 2,000