Name:	qbak_LesseeOperatingLeaseSubleaseRevenueReceivableUndiscountedExcessAmount
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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

Contractually required future rental payments receivable on noncancelable subleasing arrangements.

No definition available.

Name:	qbak_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseReceivable
Namespace Prefix:	qbak_
Data Type:	xbrli:monetaryItemType
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Period Type:	instant

Represents the portion receivable after the fifth fiscal year, following the latest fiscal year, of the contractually required future rental payments receivable on noncancelable subleasing arrangements.

No definition available.

Name:	qbak_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsReceivableAfterFiveYears
Namespace Prefix:	qbak_
Data Type:	xbrli:monetaryItemType
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Represents the portion receivable in the second fiscal year, for the next fiscal year, of the contractually required future rental payments receivable on noncancelable subleasing arrangements.

No definition available.

Name:	qbak_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsReceivableCurrent
Namespace Prefix:	qbak_
Data Type:	xbrli:monetaryItemType
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Period Type:	instant

Represents the portion receivable in the fifth fiscal year, following the latest fiscal year, of the contractually required future rental payments receivable on noncancelable subleasing arrangements.

No definition available.

Name:	qbak_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsReceivableInFiveYears
Namespace Prefix:	qbak_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Represents the portion receivable in the fourth fiscal year, following the latest fiscal year, of the contractually required future rental payments receivable on noncancelable subleasing arrangements.

No definition available.

Name:	qbak_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsReceivableInFourYears
Namespace Prefix:	qbak_
Data Type:	xbrli:monetaryItemType
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Period Type:	instant

Represents the portion receivable in the third fiscal year, following the latest fiscal year, of the contractually required future rental payments receivable on noncancelable subleasing arrangements.

No definition available.

Name:	qbak_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsReceivableInThreeYears
Namespace Prefix:	qbak_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Represents the portion receivable in the second fiscal year, following the latest fiscal year, of the contractually required future rental payments receivable on noncancelable subleasing arrangements.

No definition available.

Name:	qbak_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsReceivableInTwoYears
Namespace Prefix:	qbak_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Amount of interest in required minimum rental payments, net of the related sublease revenue receivable, for leases having an initial or remaining non-cancelable letter-terms in excess of one year. A negative number indicates that the sublease revenue exceeds the rent payable.

No definition available.

Name:	qbak_OperatingLeasesFutureMinimumPaymentsDueInterestNetOfSubleaseRevenueReceivable
Namespace Prefix:	qbak_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of required minimum rental payments, net of the related sublease revenue receivable, for leases having an initial or remaining non-cancelable letter-terms in excess of one year. A negative number indicates that the sublease revenue exceeds the rent payable.

No definition available.

Name:	qbak_OperatingLeasesFutureMinimumPaymentsDueNetOfSubleaseRevenueReceivable
Namespace Prefix:	qbak_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of required minimum rental payments, net of the related sublease revenue, for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the current fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. A negative number indicates that the sublease revenue exceeds the rent payable.

No definition available.

Name:	qbak_OperatingLeasesFutureMinimumPaymentsNetOfSubleaseRevenueCurrent
Namespace Prefix:	qbak_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of required minimum rental payments, net of the related sublease revenue, for operating leases having an initial or remaining non-cancelable lease term in excess of one year due after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. A negative number indicates that the sublease revenue exceeds the rent payable.

No definition available.

Name:	qbak_OperatingLeasesFutureMinimumPaymentsNetOfSubleaseRevenueDueAfterFiveYears
Namespace Prefix:	qbak_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of required minimum rental payments, net of the related sublease revenue, for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. A negative number indicates that the sublease revenue exceeds the rent payable.

No definition available.

Name:	qbak_OperatingLeasesFutureMinimumPaymentsNetOfSubleaseRevenueDueInFiveYears
Namespace Prefix:	qbak_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of required minimum rental payments, net of the related sublease revenue, for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. A negative number indicates that the sublease revenue exceeds the rent payable.

No definition available.

Name:	qbak_OperatingLeasesFutureMinimumPaymentsNetOfSubleaseRevenueDueInFourYears
Namespace Prefix:	qbak_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of required minimum rental payments, net of the related sublease revenue, for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. A negative number indicates that the sublease revenue exceeds the rent payable.

No definition available.

Name:	qbak_OperatingLeasesFutureMinimumPaymentsNetOfSubleaseRevenueDueInThreeYears
Namespace Prefix:	qbak_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of required minimum rental payments, net of the related sublease revenue, for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. A negative number indicates that the sublease revenue exceeds the rent payable.

No definition available.

Name:	qbak_OperatingLeasesFutureMinimumPaymentsNetOfSubleaseRevenueDueInTwoYears
Namespace Prefix:	qbak_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Total present value of operating leases due, net of the related sublease revenue receivable, for leases having an initial or remaining non-cancelable letter-terms in excess of one year. A negative number indicates that the sublease revenue exceeds the rent payable.

No definition available.

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Namespace Prefix:	qbak_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Present value of lessee's discounted receivable for sublease revenue.

No definition available.

Name:	qbak_OperatingSubleaseRevenueReceivable
Namespace Prefix:	qbak_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Amount of lessee's undiscounted obligation for lease payments for operating lease, due after fifth fiscal year following latest fiscal year.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918701-209980

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Amount of lessee's undiscounted obligation for lease payments for operating lease, due in next fiscal year following latest fiscal year.

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Amount of lessee's undiscounted obligation for lease payments for operating lease, due in fifth fiscal year following latest fiscal year.

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Amount of lessee's undiscounted obligation for lease payments for operating lease, due in fourth fiscal year following latest fiscal year.

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Amount of lessee's undiscounted obligation for lease payments for operating lease, due in third fiscal year following latest fiscal year.

Name:	us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree
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Amount of lessee's undiscounted obligation for lease payments for operating lease, due in second fiscal year following latest fiscal year.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for operating lease.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Present value of lessee's discounted obligation for lease payments from operating lease.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977

Name:	us-gaap_OperatingLeaseLiability
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Data Type:	xbrli:monetaryItemType
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Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 50
-Paragraph 2
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-URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41502-112717

Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Publisher FASB
-Name Accounting Standards Codification
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