Subsequent Events (Narratives) (Details) - Subsequent Event [Member] - 1031 Exchange [Member] $ in Millions	1 Months Ended
Oct. 31, 2017 USD ($)
Subsequent Events [Abstract]
Net sale proceeds	$ 194.2
Tax deferred exempt exhange amount	$ 95.1

Cash inflow related to a property which is traded for the promise to provide a replacement like-kind property in the near future also known as a tax deferred exempt exchange.

Reference 1: 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=98514028&loc=d3e3179-108585

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