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Summary of Significant Accounting Policies (Details) - USD ($) | Mar. 31, 2020 | Jun. 30, 2019
--- | --- | ---
Short-Term Investments |  | $ 7,430,127 |  | $ 13,005,522 |
Written Options Contracts |  | (18,867) |  | (19,336) |
SIT RISING RATE ETF [Member] |  |  |  |  |
Short-Term Investments |  | 4,873,652 |  | 11,909,897 |
Written Options Contracts |  | (18,867) |  | (19,336) |
SIT RISING RATE ETF [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |  |
Short-Term Investments | [1] | 4,857,652 |  | 11,874,272 |
Purchased Options Contracts | [1] | 16,000 |  | 35,625 |
Written Options Contracts | [2] | (18,867) |  | (19,336) |
Futures Contracts | [3] | (400,059) |  | (326,457) |
Total |  | 4,454,726 |  | 11,564,104 |
BREAKWAVE DRY BULK SHIPPING ETF |  |  |  |  |
Short-Term Investments |  | 2,556,475 |  | 1,095,625 |
Written Options Contracts |  |  |  |  |
BREAKWAVE DRY BULK SHIPPING ETF | Fair Value, Inputs, Level 1 [Member] |  |  |  |  |
Short-Term Investments | [1] | 2,556,475 |  | 1,095,625 |
Futures Contracts |  | (1,976,295) | [3] | 391,415 | [4]
Total |  | $ 580,180 |  | $ 1,487,040 |
[1] | Included in Investments in securities in the Combined Statements of Assets and Liabilities.
[2] | Included in Options written, at fair value in the Combined Statements of Assets and Liabilities.
[3] | Included in Payable on open futures contracts in the Combined Statements of Assets and Liabilities.
[4] | Included in Receivable on open futures contracts in the Combined Statements of Assets and Liabilities.

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