Agreements (Details) - USD ($)			3 Months Ended				5 Months Ended	6 Months Ended
	Mar. 22, 2018	Jan. 01, 2018	Dec. 31, 2019	Sep. 30, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 01, 2018	Dec. 31, 2019	Dec. 31, 2018
Agreements (Textual)
Waiver of commodity trading advisor fees			$ 6,561		$ 10,462			$ 16,213	$ 23,499
Expense related to distribution or servicing and underwriting fees			7,883		8,568			15,766	17,136
Noninterest expense commission expense			8,129		25,590			18,292	50,955
Costs and expenses			258,785		379,573			524,272	752,262
Management fee expense			12,584		12,602			25,162	25,204
Revised annual sponsor fee			50,272		56,609			100,544	110,249
Admin/accounting/custodian/transfer agent fees			30,027		29,667			60,054	59,334
Wholesale support fees			8,393		24,082			$ 17,493	46,218
Sit Fixed Income Advisors II, LLC [Member]
Agreements (Textual)
Fund expenses annual rate percentage							1.00%
Percentage of fee paid		0.20%
SIT RISING RATE ETF [Member]
Agreements (Textual)
Fund expenses annual rate percentage								0.10%
Percentage of fee paid		1.00%
Waiver of commodity trading advisor fees
Assets under management percentage								0.05%
Expense related to distribution or servicing and underwriting fees			3,906		4,410			$ 7,812	8,820
Percentage of brokerage commissions and fees								0.08%
Noninterest expense commission expense			927		19,434			$ 2,793	35,862
Trustee fees			628		630			1,256	1,260
Costs and expenses			116,924		206,506			236,108	400,559
Management fee expense			6,301		6,301			12,596	12,602
Revised annual sponsor fee			18,852		25,103			37,704	47,237
Admin/accounting/custodian/transfer agent fees			14,479		14,191			28,958	28,382
Wholesale support fees			1,566		16,915			3,583	31,671
Fund expenses			100,323		17,920			197,476	$ 47,986
SIT RISING RATE ETF [Member] | Minimum [Member]
Agreements (Textual)
Accrued professional fees, current			50,000					50,000
Custody fees								4,800
SIT RISING RATE ETF [Member] | Sponsors Advisory Services [Member]
Agreements (Textual)
Advisory services management fees percentage									0.15%
Waiver of commodity trading advisor fees			6,561		10,462			16,213	$ 23,499
Payments for fees			100,323		17,920			$ 197,476	$ 47,986
Management fee expense		$ 75,000
Description CTA fee		Effective January 1, 2018, RISE’s CTA fee, calculated daily and paid monthly in arrears, was reduced from .50% per annum to .20% per annum of average daily net assets.
SIT RISING RATE ETF [Member] | Sponsors Advisory Services [Member] | Principal Financial Officer and Chief Compliance Officer [Member]
Agreements (Textual)
Management fee expense		$ 25,000
SIT RISING RATE ETF [Member] | Custody Services [Member]
Agreements (Textual)
Assets under management percentage								0.01%	0.10%
Description CTA fee		Effective April 1, 2019, the fee paid to the Sponsor for tax return preparation was reduced from $100,000 per year to $50,000 per year.
BREAKWAVE DRY BULK SHIPPING ETF
Agreements (Textual)
Advisory services management fees percentage								3.50%
Fund expenses annual rate percentage		1.00%
Waiver of commodity trading advisor fees			6,561		10,462			$ 16,213	$ 23,499
Assets under management percentage	0.05%
Expense related to distribution or servicing and underwriting fees			3,977		4,158			$ 7,954	$ 8,316
Percentage of brokerage commissions and fees								0.76%	0.08%
Noninterest expense commission expense			7,202	$ 7,202	6,156	$ 6,156		$ 15,499	$ 15,093
Trustee fees			628		630			1,256	1,260
Costs and expenses			141,861		173,067			288,164	351,703
Management fee expense			6,283		6,301			12,566	12,602
Administrative and other expenses absorbed by sponsor			112,262		131,193			217,318	256,383
Revised annual sponsor fee			31,420		31,506			62,840	63,012
Admin/accounting/custodian/transfer agent fees			15,548		15,476			31,096	30,952
Wholesale support fees			6,827		7,167			13,910	14,547
Fund expenses			$ 112,262		$ 131,193			$ 217,318	$ 256,383
BREAKWAVE DRY BULK SHIPPING ETF | Minimum [Member]
Agreements (Textual)
Accrued professional fees, current	$ 45,000
Custody fees	$ 4,800
BREAKWAVE DRY BULK SHIPPING ETF | Sponsors Advisory Services [Member]
Agreements (Textual)
Advisory services management fees percentage								0.15%
Fund expenses annual rate percentage	3.50%
BREAKWAVE DRY BULK SHIPPING ETF | Custody Services [Member]
Agreements (Textual)
Assets under management percentage	0.01%							0.12%
Management fee expense								$ 25,000
Distributor [Member] | Alps Distributors, Inc. [Member]
Agreements (Textual)
Assets under management percentage								0.02%
Distributor [Member] | Minimum [Member] | Alps Distributors, Inc. [Member]
Agreements (Textual)
Payments for fees								$ 15,000
ETF MANAGERS GROUP COMMODITY TRUST I [Member] | Sponsors Advisory Services [Member]
Agreements (Textual)
Advisory services management fees percentage								1.45%
Management fee expense								$ 125,000