Note 11 - Concentrations - Revenues by Product Platform (Details) - USD ($)	6 Months Ended		12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenue, Net	$ 6,013,000	$ 7,772,000	$ 14,525,000	$ 11,929,000
Product Concentration Risk [Member] | BioArchive [Member]
Revenue, Net	2,642,000		3,318,000	2,465,000
Product Concentration Risk [Member] | AXP [Member]
Revenue, Net	2,577,000		8,715,000	6,932,000
Product Concentration Risk [Member] | Manual Disposables [Member]
Revenue, Net	498,000		1,195,000	1,507,000
Product Concentration Risk [Member] | Bone Marrow [Member]
Revenue, Net	191,000		745,000	459,000
Product Concentration Risk [Member] | Other Segments [Member]
Revenue, Net	$ 105,000		$ 552,000	$ 566,000