XML 32 R17.htm IDEA: XBRL DOCUMENT
v3.21.2

RECENT ACCOUNTING PRONOUNCEMENTS | 6 Months Ended
--- | ---
Jun. 30, 2021
RECENT ACCOUNTING PRONOUNCEMENTS |
RECENT ACCOUNTING PRONOUNCEMENTS | NOTE 8 — RECENT ACCOUNTING PRONOUNCEMENTS In August 2018, the FASB issued Accounting Standards Update (“ASU”) No. 2018-13, which changes certain fair value measurement disclosure requirements. The new ASU, in addition to other modifications and additions, removes the requirement to disclose the amount and reasons for transfers between Level 1 and Level 2 of the fair value hierarchy, and USL’s policy for the timing of transfers between levels. The amendments are effective for financial statements issued for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years. USL has evaluated the implications of certain provisions of the ASU and has determined that there will be no material impacts to the financial statements.

X
- Definition Description Of New Accounting Pronouncements [Text Block] + References No definition available. + Details
Name: | usl_DescriptionOfNewAccountingPronouncementsAbstract
Namespace Prefix: | usl_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Description Of New Accounting Pronouncements [Text Block] + References No definition available. + Details
Name: | usl_DescriptionOfNewAccountingPronouncementsTextBlock
Namespace Prefix: | usl_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration