Note 11 - Segment Information - Revenue by Primary Geographic Operating Region (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
North America [Member] | Power Supplies [Member]
Revenue	$ 2,185	$ 2,122	$ 2,564
North America [Member] | Tape Libraries [Member]
Revenue	3,744	3,982	3,793
North America [Member]
Revenue	5,929	6,104	6,357
Europe [Member] | Power Supplies [Member]
Revenue	1,333	1,232	1,218
Europe [Member] | Tape Libraries [Member]
Revenue	862	760	1,977
Europe [Member]
Revenue	2,195	1,992	3,195
Asia Pacific [Member] | Power Supplies [Member]
Revenue	2,812	2,520	2,707
Asia Pacific [Member]
Revenue	4,169	2,641	2,936
Asia [Member] | Tape Libraries [Member]
Revenue	$ 1,357	$ 121	$ 229
Other Geographic Areas [Member] | Power Supplies [Member]
Revenue
Other Geographic Areas [Member]
Revenue	$ 609	$ 204	$ 154
Power Supplies [Member]
Revenue	6,330	5,874	6,489
Tape Libraries [Member]
Revenue	6,572	5,067	6,153
Revenue	$ 12,902	$ 10,941	$ 12,642