Note 4 - Intangible Assets and Goodwill - Summary of Intangible Assets (Details) - USD ($)	6 Months Ended	12 Months Ended
	Dec. 31, 2017	Jun. 30, 2017	Jun. 30, 2016
Gross Carrying Amount	$ 1,445,000	$ 2,000,000	$ 1,956,000
Accumulated Amortization	829,000	1,395,000	1,005,000
Net	616,000	295,000	951,000
Gross Carrying Amount			21,826,000
Gross Carrying Amount	22,458,000	21,870,000
Net	21,629,000	20,165,000	20,821,000
Impairment of Intangible Assets (Excluding Goodwill)		310,000
Clinical Protocols [Member]
Gross Carrying Amount	19,870,000	19,870,000	$ 19,870,000
Impairment of Intangible Assets (Excluding Goodwill)
In Process Techonology [Member]
Gross Carrying Amount	$ 1,143,000
Trade Names [Member]
Finite-Lived Intangible Asset, Useful Life	7 years	7 years	7 years
Gross Carrying Amount	$ 56,000	$ 30,000	$ 29,000
Accumulated Amortization	21,000	14,000	10,000
Net	$ 35,000	16,000	$ 19,000
Impairment of Intangible Assets (Excluding Goodwill)
Licensing Agreements [Member]
Finite-Lived Intangible Asset, Useful Life	7 years	7 years	7 years
Gross Carrying Amount	$ 489,000	$ 482,000	$ 462,000
Accumulated Amortization	271,000	233,000	157,000
Net	$ 218,000	249,000	$ 305,000
Impairment of Intangible Assets (Excluding Goodwill)
Customer Relationships [Member]
Finite-Lived Intangible Asset, Useful Life	3 years	3 years	3 years
Gross Carrying Amount	$ 490,000	$ 443,000	$ 424,000
Accumulated Amortization	456,000	443,000	335,000
Net	$ 34,000		$ 89,000
Impairment of Intangible Assets (Excluding Goodwill)
Developed Technology Rights [Member]
Finite-Lived Intangible Asset, Useful Life	10 years
Gross Carrying Amount	$ 318,000
Accumulated Amortization	16,000
Net	$ 302,000
Device Registration [Member]
Finite-Lived Intangible Asset, Useful Life	7 years	7 years	7 years
Gross Carrying Amount	$ 92,000	$ 90,000	$ 86,000
Accumulated Amortization	65,000	60,000	49,000
Net	$ 27,000	30,000	$ 37,000
Impairment of Intangible Assets (Excluding Goodwill)
Noncompete Agreements [Member]
Finite-Lived Intangible Asset, Useful Life		5 years	5 years
Gross Carrying Amount		$ 955,000	$ 955,000
Accumulated Amortization		645,000	454,000
Net			$ 501,000
Impairment of Intangible Assets (Excluding Goodwill)		$ 310,000