Note 16 - Segment Reporting - Select Financial Information for Segments (Details) - USD ($)	3 Months Ended				6 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Dec. 31, 2019	Sep. 30, 2019	Dec. 31, 2020	Dec. 31, 2019	Jun. 30, 2020
Consolidated revenue	$ 15,147,000		$ 3,175,000		$ 29,000,000	$ 4,615,000
Consolidated net loss	(9,525,294)	$ (4,305,931)	(214,247)	$ (4,929,030)	(13,831,224)	(5,143,277)
Total assets	166,742,096				166,742,096		$ 152,836,330
Aytu Bioscience [Member]
Consolidated revenue	7,212,000		3,175,000		13,000,000	4,615,000
Consolidated net loss	(8,267,000)		(214,000)		(11,218,000)	(5,143,000)
Total assets	140,647,000				140,647,000		126,267,000
Aytu Consumer Health [Member]
Consolidated revenue	7,935,000				16,000,000
Consolidated net loss	(1,258,000)				(2,613,000)
Total assets	$ 26,095,000				$ 26,095,000		$ 26,569,000