Note 6 - Contingencies (Details Textual)	6 Months Ended
Jun. 30, 2017
Product Warranty Accrual, Tape Libraries Parts and Labor, Term	3 years
Product Warranty Accrual, Power Supplies, Term	3 years

Represents the general term of the parts and labor warranty for tape libraries.

No definition available.

Name:	qbak_ProductWarrantyAccrualTapeLibrariesPartsAndLaborTerm
Namespace Prefix:	qbak_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration