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FEES PAID BY THE FUND AND RELATED PARTY TRANSACTIONS (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2021 | Sep. 30, 2021 | Jun. 30, 2021 | Mar. 31, 2021 | Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
FEES PAID BY THE FUND AND RELATED PARTY TRANSACTIONS |  |  |  |  |  |  |  |  |  |  |
Estimated directors fees and expenses |  |  |  |  |  |  |  |  | $ 12,755 | $ 2,711 | $ 1,096
Licensing fee incurred |  |  |  |  |  |  |  |  | 1,716 | 718 | 651
Expense waiver | $ 20,736 | $ 38,328 | $ 39,639 | $ 30,045 | $ 12,793 | $ 14,037 | $ 17,683 | $ 16,022 | $ 128,748 | 60,535 | 74,303
Licensing Agreements [Member] |  |  |  |  |  |  |  |  |  |  |
FEES PAID BY THE FUND AND RELATED PARTY TRANSACTIONS |  |  |  |  |  |  |  |  |  |  |
Fee percentage |  |  |  |  |  |  |  |  | 0.015% |  |
UNL [Member] |  |  |  |  |  |  |  |  |  |  |
FEES PAID BY THE FUND AND RELATED PARTY TRANSACTIONS |  |  |  |  |  |  |  |  |  |  |
Percentage of contractual obligated to pay |  |  |  |  |  |  |  |  | 0.75% |  |
Estimated directors fees and expenses |  |  |  |  |  |  |  |  | $ 12,755 | 2,711 | 1,096
Estimated costs |  |  |  |  |  |  |  |  | 114,000 |  |
Investor reporting costs |  |  |  |  |  |  |  |  |  | 62,653 | 77,834
UNL [Member] | Related Public Funds [Member] |  |  |  |  |  |  |  |  |  |  |
FEES PAID BY THE FUND AND RELATED PARTY TRANSACTIONS |  |  |  |  |  |  |  |  |  |  |
Estimated directors fees and expenses |  |  |  |  |  |  |  |  | $ 1,081,963 | $ 585,896 | $ 556,951

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- Definition Noninterest expense related to directors' fees which are fees paid by an Entity to its directors. Directors' fees may be paid in addition to salary and other benefits. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.14) -URI http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 + Details
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