Note 4 - Intangible Assets (Details Textual) - Grace Therapeutics Inc. [Member] - USD ($) $ in Thousands		3 Months Ended
Aug. 27, 2020	Jun. 30, 2022
Finite-lived Intangible Assets Acquired		$ 69,810
In Process Research and Development [Member]
Finite-lived Intangible Assets Acquired	$ 69,810

Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (a)(1)
-URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275

Name:	us-gaap_FinitelivedIntangibleAssetsAcquired1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration