Expected nonrecurring charge on consolidation.

No definition available.

Name:	qts_ExpectedNonrecurringChargeOnConsolidation
Namespace Prefix:	qts_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Line Of Credit Facility Maximum Prepayment Amount.

+ References

No definition available.

+ Details

Name:	qts_LineOfCreditFacilityMaximumPrepayment
Namespace Prefix:	qts_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Date the declared dividend will be paid, in CCYY-MM-DD format.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586

+ Details

Name:	us-gaap_DividendPayableDateToBePaidDayMonthAndYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

The per share amount of a dividend declared, but not paid, as of the financial reporting date.

+ References

+ Details

Name:	us-gaap_DividendsPayableAmountPerShare
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Date the dividend to be paid was declared, in CCYY-MM-DD format.

+ References

+ Details

Name:	us-gaap_DividendsPayableDateDeclaredDayMonthAndYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format.

+ References

No definition available.

+ Details

Name:	us-gaap_DividendsPayableDateOfRecordDayMonthAndYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Details

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Subsequent Events - Additional Information (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	0 Months Ended			1 Months Ended		0 Months Ended
	Feb. 13, 2014	May 06, 2014 Subsequent Event [Member]	Apr. 08, 2014 Subsequent Event [Member]	Apr. 30, 2014 Subsequent Event [Member]	Apr. 30, 2014 Subsequent Event [Member] Portion recognized in Q2 [Member]	Apr. 11, 2014 Subsequent Event [Member] Term Loan [Member]
Subsequent Event [Line Items]
Cash dividend per common share	$ 0.29	$ 0.29	$ 0.29
Dividends Payable, Date Declared	Apr. 08, 2014	May 06, 2014	Apr. 08, 2014
Dividends Payable, Date of Record	Mar. 20, 2014	Jun. 20, 2014	Mar. 20, 2014
Dividends Payable, Date to be Paid		Jul. 08, 2014
Line of credit facility maximum prepayment						$ 150
Aggregate non-recurring charge				$ 1.5	$ 1.3