Summary of Significant Accounting Policies (Details) - USD ($)		Dec. 31, 2019		Jun. 30, 2019
Short-Term Investments		$ 6,084,345		$ 13,005,522
Written Options Contracts		(5,906)		(19,336)
SIT RISING RATE ETF [Member]
Short-Term Investments		5,533,113		11,909,897
Written Options Contracts		(5,906)		(19,336)
SIT RISING RATE ETF [Member] | Fair Value, Inputs, Level 1 [Member]
Short-Term Investments	[1]	5,511,316		11,874,272
Purchased Options Contracts	[1]	21,797		35,625
Written Options Contracts	[2]	(5,906)		(19,336)
Futures Contracts		15,878	[3]	(326,457)	[4]
Total		5,543,085		11,564,104
BREAKWAVE DRY BULK SHIPPING ETF
Short-Term Investments		551,232		1,095,625
Written Options Contracts
BREAKWAVE DRY BULK SHIPPING ETF | Fair Value, Inputs, Level 1 [Member]
Short-Term Investments	[1]	551,232		1,095,625
Futures Contracts		(105,125)	[4]	391,415	[3]
Total		$ 446,107		$ 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 Receivable on open futures contracts in the Combined Statements of Assets and Liabilities.

[4] Included in Payable on open futures contracts in the Combined Statements of Assets and Liabilities.