Note 6 - Leases and Other Commitments and Contingencies - Leases and Commitments (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Jun. 30, 2019
Operating lease right-of-use assets	$ 2,943	$ 3,284
Current portion of operating lease liabilities	484	470
Operating lease liabilities	2,465	2,822
Remaining cash commitment	3,288	3,719
Machinery and Equipment Leases [Member]
Operating lease right-of-use assets	18	26
Current portion of operating lease liabilities	11	11
Operating lease liabilities	7	15
Remaining cash commitment	19	27
Office Equipment Leases [Member]
Operating lease right-of-use assets	24	22
Current portion of operating lease liabilities	10	9
Operating lease liabilities	13	14
Remaining cash commitment	25	24
Vitamin Realty LLC [Member]
Operating lease right-of-use assets	2,901	3,236
Current portion of operating lease liabilities	463	450
Operating lease liabilities	2,445	2,793
Remaining cash commitment	$ 3,244	$ 3,668