Supplemental Cash Flow Information - Non-cash Investing and Financing Activities (Details) $ in Thousands	3 Months Ended
Mar. 31, 2018 USD ($)
Supplemental Cash Flow Information [Abstract]
Amended Omnibus Agreement fees settled in our common units	$ 3,218

The amount by which stockholders' equity was increased by the transaction in which equity securities were issued to pay for goods or nonemployee services.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 50
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=68057994&loc=d3e25284-112666

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