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)