Consolidated Balance Sheets (Parentheticals) - shares	Dec. 31, 2016	Dec. 31, 2015
Consolidated Balance Sheets [Abstract]
Limited Partners - Common Units Issued	122,094,633	120,409,456
Limited Partners - Common Units Outstanding	122,094,633	120,409,456
Limited Partners - Preferred Units Issued	12,983,333	12,983,333
Limited Partners - Preferred Units Outstanding	12,983,333	12,983,333

The number of preferred units outstanding.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 5
-Subparagraph (SAB Topic 4.F)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187171-122770

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 272
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70434-108055

Name:	us-gaap_PreferredUnitsOutstanding
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant