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v3.8.0.1

Condensed Statements of Operations (Parenthetical) | Mar. 31, 2018
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Received In Kind Interest, Percentage | 5.00%

X
- Definition The percentage of interest income received in kind of total interest received during the period. + References No definition available. + Details
Name: | unl_ReceivedInKindInterestPercentage
Namespace Prefix: | unl_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant