false 0001647513 0001647513 2020-10-05 2020-10-05 UNITED...
false0001647513 0001647513 2020-08-27 2020-08-27 UNITED...
false--12-31Q2202000016475138100000us-gaap:OtherLiabilitiesCurrentus-gaap:OtherLiabilitiesCurrentus-gaap:L...
false0001647513 0001647513 2020-08-03 2020-08-03 UNITED...
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Cushing® Asset Management and Swank Capital Announce Rebalancing of the Cushing® MLP High Income Index [CORRECTED] PR Newswire DALLAS, July 2...
Cushing® Asset Management and Swank Capital Announce Rebalancing of the Cushing® MLP High Income Index PR Newswire DALLAS, July 2, 2020 DALLAS...
false--12-31Q12020000164751381000009013600090161000P9MP1Y 0001647513 2020-01-01 2020-03-31 0001647513...
false0001647513 0001647513 2020-05-08 2020-05-08 UNITED...
FORM 4 [ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction...
Cushing® Asset Management and Swank Capital Announce Rebalancing of the Cushing® MLP High Income Index PR Newswire DALLAS, April 2, 2020 DALLAS...
Cushing® Asset Management and Swank Capital Announce Rebalancing of The Cushing® MLP Market Cap Index PR Newswire DALLAS, March 13, 2020 DALLAS...
false0001647513 0001647513 2020-03-13 2020-03-13 UNITED...
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