Fair Value Measurements (Details) (Nonrecurring basis, USD $) In Thousands, unless otherwise specified	Jun. 30, 2014
Nonrecurring basis
Fair value measurements
Assets subject to impairment	$ 0

Fair value of assets subject to impairment as of the balance sheet date.

No definition available.

Name:	doc_AssetsSubjectToImpairmentFairValueDisclosure
Namespace Prefix:	doc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant