Subsequent Events - Additional Information (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended	1 Months Ended
Jun. 30, 2014 Property	Jul. 29, 2014 Subsequent Event Parcels Property
Subsequent Event [Line Items]
Number of industrial properties sold	2	6
Number of land parcels sold		1
Proceeds from sale of industrial properties and land parcel	$ 1,655	$ 27,810

The cash inflow from sale of buildings.

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 12

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585

Name:	us-gaap_ProceedsFromSaleOfBuildings
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration