Note 4 - Inventory (Tables)

6 Months Ended

Dec. 31, 2019

Notes Tables

Schedule of Inventory, Current [Table Text Block]

	December 31,		June 30,
	2019		2019
Raw materials	$	372	$	333
Work in process		166		166
Finished goods		7		31
Total inventory, current	$	545	$	530

Schedule of Inventory, Noncurrent [Table Text Block]

	December 31,		June 30,
	2019		2019
Enriched barium, non-current	$	116	$	117
Raw materials, non-current		11		38
Total inventory, non-current	$	127	$	155