Note 1 - Basis of Presentation (Details Textual) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Jun. 30, 2016	Mar. 31, 2016	Jun. 30, 2015
Cash and Cash Equivalents, at Carrying Value	$ 3,791	$ 5,835	$ 7,247	$ 3,357
Working Capital	5,898
Retained Earnings (Accumulated Deficit)	(184,203)	$ (156,262)
Line of Credit Facility, Maximum Borrowing Capacity	5,000
Revolving Credit Facility [Member] | Boyalife Investment Fund II, Inc. [Member]
Proceeds from Long-term Lines of Credit	$ 1,500