Note 11 - Segment Information (Details) - Segment Assets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Segment Reporting, Asset Reconciling Item [Line Items]
Cash and Cash Equivalents	$ 1,966	$ 7,381	$ 4,970	$ 2,234
Marketable Securities	6,305	7,135
Total Cash and Marketable Securities	13,817	20,885
Total Assets	20,207	28,824
Power Supply [Member]
Power Supplies:
Gross fixed assets	576	513
Less: accumulated depreciation and amortization	(448)	(389)
Net Library fixed assets	128	124
Tape Libraries [Member]
Power Supplies:
Gross fixed assets	2,706	2,533
Less: accumulated depreciation and amortization	(2,289)	(2,389)
Net Library fixed assets	417	144
Total [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Marketable Securities	11,851	13,504
Libraries and Power Supplies	6,390	7,939
Power Supply [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Libraries and Power Supplies	538	2,142
Tape Libraries [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Libraries and Power Supplies	$ 5,852	$ 5,797