Noncontrolling Interest - Additional Information (Detail)	Jun. 30, 2014
Noncontrolling Interest [Abstract]
Quality Tech LP ownership percentage in operating partnership	21.20%

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

No definition available.

Name:	us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant