Share Capital - Restricted Stock Units - Additional Information 4 (Detail) (USD $) In Millions, except Share data, unless otherwise specified	9 Months Ended	12 Months Ended
Sep. 30, 2014 Installment	Dec. 31, 2013
Class of Stock [Line Items]
Expected weighted average periods of compensation costs to be recognized	1 year 9 months
RSU's [Member]
Class of Stock [Line Items]
Restricted stock units vesting period expressed in number of annual installments	3
Number of common shares to be received upon vesting of 1 RSU	1
Shares, vested	0	0
Shares, unvested	42,000	42,000
Estimated unrecognized compensation cost	$ 0.1	$ 0.2
Expected weighted average periods of compensation costs to be recognized	1 year 9 months 15 days	2 years 6 months 15 days

Number of common shares issued for each restricted stock unit that is vested and converted.

No definition available.

Name:	qlti_CommonSharesIssuedUponConversionOfRestrictedStockUnit
Namespace Prefix:	qlti_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of equity instruments other than options vested.

+ References

No definition available.

+ Details

Name:	qlti_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsVestedNumberOfShares
Namespace Prefix:	qlti_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Description of the number of annual installments over which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, which may be expressed in a variety of ways (for example, in years, month and year).

+ References

No definition available.

+ Details

Name:	qlti_ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingPeriodOfEquityInstrumentsOtherThanOptionsNumberOfAnnualInstallments
Namespace Prefix:	qlti_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_ClassOfStockLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Unrecognized cost of unvested share-based compensation awards.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (i)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

+ Details

Name:	us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)(i)-(ii)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant