Note 11 - Segment Information (Detail) - Schedule of Segment Assets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2009
Cash and Marketable Securities:
Cash and Cash Equivalents	$ 7,381	$ 4,970	$ 2,234	$ 3,749
Marketable Securities	7,135	10,713
Total Cash and Marketable Securities	20,885	22,664
Power Supplies and Tape Libraries :
Total Assets	28,824	31,935
Total [Member]
Cash and Marketable Securities:
Marketable Securities	13,504	17,694
Power Supply [Member]
Power Supplies:
Gross fixed assets	513	454
Less: accumulated depreciation and amortization	(389)	(328)
Net Library fixed assets	124	126
Tape Libraries [Member]
Power Supplies:
Gross fixed assets	2,533	3,189
Less: accumulated depreciation and amortization	(2,389)	(3,083)
Net Library fixed assets	144	106
Power Supply [Member]
Power Supplies and Tape Libraries :
Libraries and Power Supplies	2,142	1,336
Tape Libraries [Member]
Power Supplies and Tape Libraries :
Libraries and Power Supplies	5,797	7,935
Total [Member]
Power Supplies and Tape Libraries :
Libraries and Power Supplies	$ 7,939	$ 9,271