Note 12 - Segment Information (Tables)

3 Months Ended

Sep. 30, 2013

Note 12 - Segment Information (Tables) [Line Items]

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

	Three Months Ended September 30,
	2013		2012
Net Revenues
Power supplies	$	953	$	1,544
Storage		1,238		1,909
Total revenue	$	2,191	$	3,453

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

	September 30, 2013			June 30, 2013
Total assets
Cash and marketable securities:
Cash and cash equivalents	$	1,645		$	1,966
Marketable securities		10,172			11,851
Total cash and marketable securities	$	11,817		$	13,817
Power supplies and storage:
Power supplies		(367	)		538
Storage		6,331			5,852
Power supplies and storage	$	5,974		$	6,390
Total assets	$	17,781		$	20,207

(Loss) Income Before Taxes By Segment [Member]

Note 12 - Segment Information (Tables) [Line Items]

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

	Three Months Ended September 30,
	2013			2012
Loss before income taxes
Power supplies	$	(318	)	$	(298	)
Storage		(2,209	)		(1,648	)
Total loss before taxes	$	(2,527	)	$	(1,946	)