Agreements (Details Narrative) - USD ($)				1 Months Ended	3 Months Ended		6 Months Ended	9 Months Ended		10 Months Ended
	Mar. 31, 2018	Mar. 23, 2018	Jan. 02, 2018	Feb. 19, 2016	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2016
Waiver of commodity trading advisor fees					$ 1,095	$ 17,060		$ 50,548	$ 46,460
Expense related to distribution or servicing and underwriting fees					4,721	3,699		13,539	11,465
Noninterest expense commission expense					16,408	7,718		35,305	19,688
Costs and expenses					199,683	106,141		472,529	406,001
Management fee expense					6,780	1,541		9,932	14,143
Revised annual sponsor fee					21,575	4,622		40,956	42,430
Admin/accounting/custodian/transfer agent fees					15,219	13,512		43,299	41,136
Wholesale support fees					9,763	3,412		22,683	9,287
Expenses absorbed by Sponsor					(70,485)	(30,181)		$ (81,171)	(200,471)
Sit Fixed Income Advisors II, LLC [Member]
Fund expenses annual rate percentage			1.00%
Percentage of fee paid			0.20%				0.50%
SIT RISING RATE ETF [Member]
Fund expenses annual rate percentage								1.50%
Waiver of commodity trading advisor fees						17,060		$ 49,453	46,460
Assets under management percentage				0.05%
Expense related to distribution or servicing and underwriting fees					4,314	3,699		$ 13,132	11,465
Percentage of brokerage commissions and fees								0.09%
Noninterest expense commission expense					10,000	7,718		$ 28,897	19,688
Trustee fees					1,233	1,233		3,753	3,753
Costs and expenses					165,170	106,141		438,016	406,001
Management fee expense					6,164	1,541		$ 9,316	14,143
Percentage of funds average daily net assets								1.50%
Administrative and other expenses absorbed by sponsor					46,118	30,181		$ 56,804	200,471
Revised annual sponsor fee					18,493	4,622		37,874	42,430
Admin/accounting/custodian/transfer agent fees					13,735	13,512		41,815	41,136
Wholesale support fees					9,056	3,412		21,976	9,287
Expenses absorbed by Sponsor					(46,118)	(30,181)		(56,804)	(200,471)
SIT RISING RATE ETF [Member] | Minimum [Member]
Accrued professional fees, current	$ 45,000			$ 50,000	45,000			45,000
Custody fees				$ 4,800				$ 4,800
SIT RISING RATE ETF [Member] | Sponsors Advisory Services [Member]
Advisory services management fees percentage			0.15%
Fund expenses annual rate percentage							0.50%
Waiver of commodity trading advisor fees					18,493
Payments for fees					46,118
Management fee expense			$ 75,000
Revised annual sponsor fee							$ 18,750			$ 75,000
SIT RISING RATE ETF [Member] | Sponsors Advisory Services [Member] | Principal Financial Officer and Chief Compliance Officer [Member]
Management fee expense			$ 25,000
SIT RISING RATE ETF [Member] | Custody Services [Member]
Assets under management percentage				0.01%				0.01%
Distributor [Member] | Alps Distributors, Inc. [Member]
Assets under management percentage	0.02%							0.02%
Distributor [Member] | Minimum [Member] | Alps Distributors, Inc. [Member]
Payments for fees	$ 15,000							$ 15,000
ETF MANAGERS GROUP COMMODITY TRUST I [Member] | Sponsors Advisory Services [Member]
Advisory services management fees percentage	1.45%		0.15%
Management fee expense	$ 125,000
Expenses absorbed by Sponsor	24,367
BREAKWAVE DRY BULK SHIPPING ETF [Member]
Fund expenses annual rate percentage			1.00%
Waiver of commodity trading advisor fees	1,095				1,095			1,095
Assets under management percentage		0.05%
Expense related to distribution or servicing and underwriting fees	$ 407				407			407
Percentage of brokerage commissions and fees	0.40%
Noninterest expense commission expense	$ 6,408				6,408			6,408
Trustee fees	68
Costs and expenses	34,513				34,513			34,513
Management fee expense					616			616
Administrative and other expenses absorbed by sponsor	24,367
Revised annual sponsor fee					3,082			3,082
Admin/accounting/custodian/transfer agent fees	1,484				1,484			1,484
Wholesale support fees	$ 707				707			707
Expenses absorbed by Sponsor					$ (24,367)			$ (24,367)
BREAKWAVE DRY BULK SHIPPING ETF [Member] | Minimum [Member]
Accrued professional fees, current		$ 50,000
Custody fees		$ 4,800
BREAKWAVE DRY BULK SHIPPING ETF [Member] | Custody Services [Member]
Assets under management percentage	0.12%	0.01%
Management fee expense	$ 25,000