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Note 14 - Total Assets by Segment (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Jun. 30, 2014
Cash and marketable securities:    
Cash and cash equivalents $ 5,453us-gaap_CashAndCashEquivalentsAtCarryingValue $ 5,462us-gaap_CashAndCashEquivalentsAtCarryingValue
Marketable securities   1,763us-gaap_MarketableSecurities
Total cash and marketable securities 5,453qbak_TotalCashAndMarketableSecurities 7,225qbak_TotalCashAndMarketableSecurities
Other assets:    
Total other assets 5,612us-gaap_OtherAssets 5,560us-gaap_OtherAssets
Total assets 11,065us-gaap_Assets 12,785us-gaap_Assets
Power Supplies [Member]    
Other assets:    
Power Supplies 2,406qbak_PowerSuppliesAndTapeLibraries
/ us-gaap_StatementBusinessSegmentsAxis
= qbak_PowerSuppliesMember		 2,329qbak_PowerSuppliesAndTapeLibraries
/ us-gaap_StatementBusinessSegmentsAxis
= qbak_PowerSuppliesMember
Tape Libraries [Member]    
Other assets:    
Power Supplies $ 3,206qbak_PowerSuppliesAndTapeLibraries
/ us-gaap_StatementBusinessSegmentsAxis
= qbak_TapeLibrariesMember		 $ 3,231qbak_PowerSuppliesAndTapeLibraries
/ us-gaap_StatementBusinessSegmentsAxis
= qbak_TapeLibrariesMember