Note 11 - Segment Information (Details) - Revenue by Primary Geographic Operating Region (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011
Total Revenue:
Revenues By Geographic Operating Regions	$ 12,642	$ 17,081	$ 18,302
Power Supply [Member] | North America [Member]
Total Revenue:
Revenues By Geographic Operating Regions	2,564	3,327	4,105
Power Supply [Member] | Europe [Member]
Total Revenue:
Revenues By Geographic Operating Regions	1,218	1,587	1,326
Power Supply [Member] | Asia Pacific [Member]
Total Revenue:
Revenues By Geographic Operating Regions	2,707	4,506	3,024
Power Supply [Member] | Total [Member]
Total Revenue:
Revenues By Geographic Operating Regions	6,489	9,420	8,455
Library [Member] | North America [Member]
Total Revenue:
Revenues By Geographic Operating Regions	3,793	5,712	7,595
Library [Member] | Europe [Member]
Total Revenue:
Revenues By Geographic Operating Regions	1,977	1,441	1,874
Library [Member] | Asia Pacific [Member]
Total Revenue:
Revenues By Geographic Operating Regions	229	218	103
Library [Member] | Other Country [Member]
Total Revenue:
Revenues By Geographic Operating Regions	154	290	275
Library [Member] | Total [Member]
Total Revenue:
Revenues By Geographic Operating Regions	6,153	7,661	9,847
North America [Member]
Total Revenue:
Revenues By Geographic Operating Regions	6,357	9,039	11,700
Europe [Member]
Total Revenue:
Revenues By Geographic Operating Regions	3,195	3,028	3,200
Asia Pacific [Member]
Total Revenue:
Revenues By Geographic Operating Regions	2,936	4,724	3,127
Other Country [Member]
Total Revenue:
Revenues By Geographic Operating Regions	154	290	275
Total [Member]
Total Revenue:
Revenues By Geographic Operating Regions	$ 12,642	$ 17,081	$ 18,302