Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
Sep. 30, 2017	Sep. 30, 2016
SIT RISING RATE ETF [Member]
Cash flows provided by (used in) operating activities
Net income (loss)	$ 76,872	$ 159,234
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Net realized loss on investments	108,735	66,126
Change in net unrealized loss on investments	(221,490)	(273,867)
Change in operating assets and liabilities:
Sale (purchase) of investments, net	(5,555,530)	7,015,377
Decrease (increase) in interest receivable	237	(72)
Decrease in segregated cash held by broker	122,072	101,142
Increase (decrease) in options written, at fair value	5,023	(78,422)
Increase in receivable on open futures contracts	(218,612)	(11,390)
Decrease in payable on open futures contracts		(217,860)
Increase (decrease) in due to Sponsor	5,178	(8,438)
Net cash provided by (used in) operating activities	(5,677,515)	6,751,830
Cash flows from financing activities
Proceeds from sale of shares	6,825,745
Paid on redemption of shares	(1,148,230)	(6,751,830)
Net cash provided by (used in) financing activities	5,677,515	(6,751,830)
Net increase (decrease) in cash
Cash, beginning of period
Cash, end of period
ETF MANAGERS GROUP COMMODITY TRUST I [Member]
Cash flows provided by (used in) operating activities
Net income (loss)	76,872	159,234
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Net realized loss on investments	108,735	66,126
Change in net unrealized loss on investments	(221,490)	(273,867)
Change in operating assets and liabilities:
Sale (purchase) of investments, net	(5,555,530)	7,015,377
Decrease (increase) in interest receivable	237	(72)
Decrease in segregated cash held by broker	122,072	101,142
Increase (decrease) in options written, at fair value	5,023	(78,422)
Increase in receivable on open futures contracts	(218,612)	(11,390)
Decrease in payable on open futures contracts		(217,860)
Increase (decrease) in due to Sponsor	5,178	(8,438)
Net cash provided by (used in) operating activities	(5,677,515)	6,751,830
Cash flows from financing activities
Proceeds from sale of shares	6,825,745
Paid on redemption of shares	(1,148,230)	(6,751,830)
Net cash provided by (used in) financing activities	5,677,515	(6,751,830)
Net increase (decrease) in cash
Cash, beginning of period
Cash, end of period

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation.

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The increase (decrease) during the reporting period in the amount due from borrowers for interest payments.

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The net cash inflow or outflow for the increase (decrease) associated with funds that are not available for withdrawal or use (such as funds held in escrow) and are associated with underlying transactions that are classified as operating activities. This may include cash restricted for regulatory purposes.

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The net cash inflow or outflow for the increase (decrease) associated with investments (not to include restricted cash) that are pledged or subject to withdrawal restrictions.

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