Note 11 - Segment Information - Segment Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Power Supplies [Member]
Revenue
Revenue	$ 6,330	$ 5,874	$ 6,489
Data Storage:
Revenue	6,330	5,874	6,489
Tape Libraries [Member] | Product [Member]
Revenue
Revenue	4,478	2,922	4,337
Data Storage:
Revenue	4,478	2,922	4,337
Tape Libraries [Member] | Service [Member]
Revenue
Revenue	2,094	2,145	1,816
Data Storage:
Revenue	2,094	2,145	1,816
Tape Libraries [Member]
Revenue
Revenue	6,572	5,067	6,153
Data Storage:
Revenue	6,572	5,067	6,153
Revenue	12,902	10,941	12,642
Revenue	$ 12,902	$ 10,941	$ 12,642