The cash outflow from the acquisition of a piece of land and anything permanently fixed to it, including buildings, structures on it and so forth, and payments to develop real estate assets by adding improvements on or to a parcel of land. Such improvements may include drainage, utilities, subdividing, access, buildings, and any combination of these elements. Including real estate intended to generate income for the owner; excluding real estate acquired for use by the owner.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3213-108585

Name:	us-gaap_PaymentsToAcquireAndDevelopRealEstate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Recent Transactions (Acquisitions) (Narrative) (Details) $ in Thousands		6 Months Ended
	Jul. 01, 2016 USD ($) ft²	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)
Real Estate Properties [Line Items]
Purchase price of property		$ 51,638	$ 42,881
Hoboken, New Jersey [Member] \| Subsequent Event [Member]
Real Estate Properties [Line Items]
Area of property (in square feet) \| ft²	566,000
Purchase price of property	$ 235,000