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Investments (Details 1) - Interest Rate Risk [Member] - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018
SIT RISING RATE ETF [Member] |  |  |  |
Risks Inherent in Servicing Assets and Servicing Liabilities [Line Items] |  |  |  |
Location of Gain (Loss) on Derivatives | Net realized loss on investments, futures and options contracts and/or Change in unrealized gain (loss) on investments, futures and options contracts | Net realized gain on investments, futures and options contracts and/or Change in unrealized gain (loss) on investments, futures and options contracts | Net realized loss on investments, futures and options contracts and/or Change in unrealized gain (loss) on investments, futures and options contracts | Net realized loss on investments, futures and options contracts and/or Change in unrealized gain (loss) on investments, futures and options contracts
Realized Loss on Derivatives Recognized in Income | $ (306,211) | $ 266,684 | $ (252,728) | $ (456,707)
Change in Unrealized Gain (Loss) on Derivatives Recognized in Income | $ 391,106 | $ (3,327,205) | $ 368,231 | $ (1,611,508)
BREAKWAVE DRY BULK SHIPPING ETF |  |  |  |
Risks Inherent in Servicing Assets and Servicing Liabilities [Line Items] |  |  |  |
Location of Gain (Loss) on Derivatives | Net realized loss on investments and futures and/or Change in unrealized gain (loss) on investments and futures contracts | Net realized loss on investments and futures and/or Change in unrealized gain (loss) on investments and futures contracts | Net realized gain on investments and futures and/or Change in unrealized gain (loss) on investments and futures contracts | Net realized loss on investments and futures and/or Change in unrealized gain (loss) on investments and futures contracts
Realized Loss on Derivatives Recognized in Income | $ (243,845) | $ (737,508) | $ 338,181 | $ (434,239)
Change in Unrealized Gain (Loss) on Derivatives Recognized in Income | $ (117,845) | $ 137,005 | $ 666,605 | $ (33,580)

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