Note 12 - Segment Information (Tables)

9 Months Ended

Mar. 31, 2013

Reconciliation of Revenue from Segments to Consolidated [Table Text Block]

	Three Months Ended March 31,				Nine Months Ended March 31,
	2013		2012		2013		2012
Net Revenues
Power supplies	$	1,969	$	2,687	$	4,742	$	6,874
Storage		983		1,921		5,018		5,913
Total revenue	$	2,952	$	4,608	$	9,760	$	12,787

Reconciliation of Assets from Segment to Consolidated [Table Text Block]

	March 31, 2013		June 30, 2012
Total assets
Cash and marketable securities:
Cash and cash equivalents	$	825	$	7,381
Marketable securities		15,920		13,504
Total cash and marketable securities	$	16,745	$	20,885
Power supplies and storage:
Power supplies		548		2,142
Storage		6,238		5,797
Power supplies and storage	$	6,786	$	7,939
Total assets	$	23,531	$	28,824

(Loss) Income Before Taxes By Segment [Member]

Reconciliation of Other Significant Reconciling Items from Segments to Consolidated [Table Text Block]

	Three Months Ended March 31,						Nine Months Ended March 31,
	2013			2012			2013			2012
Loss before income taxes
Power supplies	$	(262	)	$	140		$	(828	)	$	332
Storage		(3,039	)		(693	)		(6,092	)		(1,799	)
Total loss before taxes	$	(3,301	)	$	(553	)	$	(6,920	)	$	(1,467	)