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Note 14 - Segment Revenue (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 9 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Mar. 31, 2015
Mar. 31, 2014
Revenue        
Revenue $ 2,805us-gaap_SalesRevenueGoodsNet $ 2,562us-gaap_SalesRevenueGoodsNet $ 9,653us-gaap_SalesRevenueGoodsNet $ 8,192us-gaap_SalesRevenueGoodsNet
Power Supplies [Member]        
Revenue        
Revenue 1,582us-gaap_SalesRevenueGoodsNet
/ us-gaap_StatementBusinessSegmentsAxis
= qbak_PowerSuppliesMember		 1,525us-gaap_SalesRevenueGoodsNet
/ us-gaap_StatementBusinessSegmentsAxis
= qbak_PowerSuppliesMember		 4,533us-gaap_SalesRevenueGoodsNet
/ us-gaap_StatementBusinessSegmentsAxis
= qbak_PowerSuppliesMember		 4,321us-gaap_SalesRevenueGoodsNet
/ us-gaap_StatementBusinessSegmentsAxis
= qbak_PowerSuppliesMember
Tape Libraries [Member] | Product [Member]        
Revenue        
Revenue 718us-gaap_SalesRevenueGoodsNet
/ us-gaap_ProductOrServiceAxis
= us-gaap_ProductMember
/ us-gaap_StatementBusinessSegmentsAxis
= qbak_TapeLibrariesMember		 457us-gaap_SalesRevenueGoodsNet
/ us-gaap_ProductOrServiceAxis
= us-gaap_ProductMember
/ us-gaap_StatementBusinessSegmentsAxis
= qbak_TapeLibrariesMember		 3,543us-gaap_SalesRevenueGoodsNet
/ us-gaap_ProductOrServiceAxis
= us-gaap_ProductMember
/ us-gaap_StatementBusinessSegmentsAxis
= qbak_TapeLibrariesMember		 2,301us-gaap_SalesRevenueGoodsNet
/ us-gaap_ProductOrServiceAxis
= us-gaap_ProductMember
/ us-gaap_StatementBusinessSegmentsAxis
= qbak_TapeLibrariesMember
Tape Libraries [Member] | Service [Member]        
Revenue        
Revenue 505us-gaap_SalesRevenueGoodsNet
/ us-gaap_ProductOrServiceAxis
= qbak_ServiceMember
/ us-gaap_StatementBusinessSegmentsAxis
= qbak_TapeLibrariesMember		 580us-gaap_SalesRevenueGoodsNet
/ us-gaap_ProductOrServiceAxis
= qbak_ServiceMember
/ us-gaap_StatementBusinessSegmentsAxis
= qbak_TapeLibrariesMember		 1,577us-gaap_SalesRevenueGoodsNet
/ us-gaap_ProductOrServiceAxis
= qbak_ServiceMember
/ us-gaap_StatementBusinessSegmentsAxis
= qbak_TapeLibrariesMember		 1,570us-gaap_SalesRevenueGoodsNet
/ us-gaap_ProductOrServiceAxis
= qbak_ServiceMember
/ us-gaap_StatementBusinessSegmentsAxis
= qbak_TapeLibrariesMember
Tape Libraries [Member]        
Revenue        
Revenue $ 1,223us-gaap_SalesRevenueGoodsNet
/ us-gaap_StatementBusinessSegmentsAxis
= qbak_TapeLibrariesMember		 $ 1,037us-gaap_SalesRevenueGoodsNet
/ us-gaap_StatementBusinessSegmentsAxis
= qbak_TapeLibrariesMember		 $ 5,120us-gaap_SalesRevenueGoodsNet
/ us-gaap_StatementBusinessSegmentsAxis
= qbak_TapeLibrariesMember		 $ 3,871us-gaap_SalesRevenueGoodsNet
/ us-gaap_StatementBusinessSegmentsAxis
= qbak_TapeLibrariesMember