Note 1 - Organization and Basis of Presentation (Details Textual) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Mar. 31, 2023
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents	$ 6,453		$ 6,453		$ 8,649
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(2,224)	$ (2,548)	(10,666)	$ (4,609)
Net Cash Provided by (Used in) Operating Activities			3,804	$ (4,627)
Working Capital	21,500		21,500
Potential Financing Amount	$ 150,000		$ 150,000