Investments (Details 1) - Interest Rate Risk [Member] - USD ($)	3 Months Ended		9 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
BREAKWAVE DRY BULK SHIPPING ETF [Member]
Risks Inherent in Servicing Assets and Servicing Liabilities [Line Items]
Location of Gain (Loss) on Derivatives	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	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	$ 24,152,831	$ (2,727,061)	$ 30,666,327	$ (2,388,880)
Change in Unrealized Gain (Loss) on Derivatives Recognized in Income	$ (1,727,485)	$ (1,871,170)	$ (6,055,445)	$ (1,204,565)
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 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	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	$ (29,138)	$ (167,895)	$ (29,138)	$ (420,623)
Change in Unrealized Gain (Loss) on Derivatives Recognized in Income	$ 10,459	$ (444,797)	$ 10,459	$ (76,566)