Initial Public Offering (Details)	0 Months Ended
Apr. 15, 2013
Initial Public Offering
Maximum number of common shares intended to be offered for sale	100,000,000

Represents the maximum number of common shares that are intended to be offered for sale in the initial public offering.

No definition available.

Name:	doc_MaximumNumberOfCommonSharesToBeOfferedForSaleInInitialPublicOffering
Namespace Prefix:	doc_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration