Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents (Cushing Connect VIEs: $10,773 and $6,842, respectively)	$ 18,913	$ 13,287
Properties and equipment, net (Cushing Connect VIEs: $25,832 and $2,916, respectively)	1,458,934	1,467,099
Equity method investments (Cushing Connect VIEs: $39,815 and $37,084, respectively)	123,299	120,071
Accounts Payable, Trade, Current	14,639	17,818
Other current liabilities	$ 2,975	$ 2,305
Partners' Equity:
Common units issued (in shares)	105,440,201	105,440,201
Common units outstanding (in shares)	105,440,201	105,440,201
Variable Interest Entity, Primary Beneficiary [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents (Cushing Connect VIEs: $10,773 and $6,842, respectively)	$ 10,773	$ 6,842
Properties and equipment, net (Cushing Connect VIEs: $25,832 and $2,916, respectively)	25,832	2,916
Equity method investments (Cushing Connect VIEs: $39,815 and $37,084, respectively)	39,815	37,084
Accounts Payable, Trade, Current	$ 6,421	$ 2,082