Note 11 - Concentrations (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

Schedules of Concentration of Risk, by Risk Factor [Table Text Block]

	Year Ended December 31,		Six Months Ended December 31,		Year Ended June 30,
	2018		2017		2017
AXP	$	4,393,000	$	2,475,000	$	8,715,000
BioArchive		3,098,000		2,642,000		3,318,000
Manual Disposables		976,000		476,000		1,195,000
CAR-TXpress		907,000		151,000
Bone Marrow		135,000		180,000		745,000
Other		163,000		89,000		552,000
	$	9,672,000	$	6,013,000	$	14,525,000

Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]

	Year Ended December 31,		Six Months Ended December 31,		Year Ended June 30,
	2018		2017		2017
2018 United States	$	4,854,000	$	1,970,000	$	6,675,000
Asia – other		1,717,000		983,000		1,951,000
Europe		1,165,000		721,000		1,739,000
China		1,143,000		2,176,000		3,296,000
Other		793,000		163,000		864,000
	$	9,672,000	$	6,013,000	$	14,525,000

Schedule of Disclosure on Geographic Areas, Long-Lived Assets in Individual Foreign Countries by Country [Table Text Block]

	December 31,		December 31,
	2018		2017
United States	$	1,614,000	$	2,265,000
Costa Rica		601,000		276,000
India		211,000		288,000
All other countries		136,000		167,000
Total equipment, net	$	2,562,000	$	2,996,000