Note 5 - Significant Risks and Uncertainties (Details Textual)	3 Months Ended			6 Months Ended	9 Months Ended
	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022	Dec. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Revenue Benchmark [Member] | Customer Concentration Risk [Member]
Number of Major Customers		2		2
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Two Customers [Member]
Concentration Risk, Percentage	88.00%		92.00%		88.00%	91.00%
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Major Customer 1 [Member] | Contract Manufacturing [Member]
Concentration Risk, Percentage	68.00%		70.00%		67.00%	69.00%
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Major Customer 1 [Member] | Other Nutraceutical Business [Member]
Concentration Risk, Percentage	47.00%		45.00%		61.00%	42.00%
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Major Customer 2 [Member] | Contract Manufacturing [Member]
Concentration Risk, Percentage	23.00%		24.00%		26.00%	24.00%
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Major Customer 2 [Member] | Other Nutraceutical Business [Member]
Concentration Risk, Percentage	27.00%		11.00%		11.00%	28.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Two Customers [Member]
Concentration Risk, Percentage	82.00%		70.00%
Number of Major Customers				2
Number of Employees, Geographic Area [Member] | Unionized Employees Concentration Risk [Member]
Concentration Risk, Percentage					73.00%