Note 6 - Leases and Other Commitments and Contingencies - Leases and Commitments (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Jun. 30, 2021
Operating lease right-of-use assets	$ 2,239	$ 2,365
Current portion of operating lease liabilities	499	500
Operating lease liabilities	1,744	1,870
Remaining cash commitment	2,438	2,586
Machinery and Equipment Leases [Member]
Operating lease right-of-use assets	2	5
Current portion of operating lease liabilities	2	5
Operating lease liabilities	0	0
Remaining cash commitment	2	5
Office Equipment Leases [Member]
Operating lease right-of-use assets	34	38
Current portion of operating lease liabilities	8	10
Operating lease liabilities	26	28
Remaining cash commitment	40	44
Vitamin Realty LLC [Member]
Operating lease right-of-use assets	2,203	2,322
Current portion of operating lease liabilities	489	485
Operating lease liabilities	1,718	1,842
Remaining cash commitment	$ 2,396	$ 2,537