Combined Schedules of Investments (Unaudited)		9 Months Ended		12 Months Ended
		Mar. 31, 2021 USD ($) Number		Jun. 30, 2020 USD ($) Number shares
Investment owned, at Fair value		$ 45,398,091		$ 49,343,668
US Treasury Securities [Member]
Investment owned, at Fair value				4,849,667
ETF MANAGERS GROUP COMMODITY TRUST I
Investment owned, at Fair value	[1]	45,398,091
BREAKWAVE DRY BULK SHIPPING ETF [Member]
Investment owned, at Fair value		45,398,091		44,275,487
BREAKWAVE DRY BULK SHIPPING ETF | US Treasury Securities [Member]
Investment owned, at Fair value	[2]
SIT RISING RATE ETF
Investment owned, at Fair value				5,068,181
SIT RISING RATE ETF | US Treasury Securities [Member]
Investment owned, at Fair value	[2]			4,849,667
Money Market Funds [Member]
Investment owned, at Fair value				8,002,668
Money Market Funds [Member] | ETF MANAGERS GROUP COMMODITY TRUST I
Investment owned, at Fair value		10,298,204
Money Market Funds [Member] | BREAKWAVE DRY BULK SHIPPING ETF
Investment owned, at Fair value		10,298,204		7,986,862
Money Market Funds [Member] | SIT RISING RATE ETF
Investment owned, at Fair value				15,806
Money Market Funds [Member] | First American US Treasury Obligations Fund, Class X
Investment owned, at Fair value				$ 7,986,862
Money Market Funds [Member] | First American US Treasury Obligations Fund, Class X | ETF MANAGERS GROUP COMMODITY TRUST I
Investment owned, at Fair value	[3]	10,298,204
Money Market Funds [Member] | First American US Treasury Obligations Fund, Class X | BREAKWAVE DRY BULK SHIPPING ETF [Member]
Investment owned, Balance, Shares | shares	[4]			7,986,862
Investment owned, at Fair value		10,298,204	[3]	$ 7,986,862	[4]
Money Market Funds [Member] | First American US Treasury Money Market Fund Class Z [Member]
Investment owned, at Fair value				$ 15,806
Money Market Funds [Member] | First American US Treasury Money Market Fund Class Z [Member] | SIT RISING RATE ETF
Investment owned, Balance, Shares | shares	[4]			15,806
Investment owned, at Fair value	[4]			$ 15,806
Investments [Member]
Investment owned, at Fair value				12,866,631
Investments [Member] | ETF MANAGERS GROUP COMMODITY TRUST I
Investment owned, at Fair value		10,298,204
Investments [Member] | BREAKWAVE DRY BULK SHIPPING ETF [Member]
Investment owned, at Fair value		10,298,204		7,986,862
Investments [Member] | SIT RISING RATE ETF
Investment owned, at Fair value				4,879,769
Other Assets in Excess of Liabilities
Investment owned, at Fair value	[2]			36,477,037
Other Assets in Excess of Liabilities | ETF MANAGERS GROUP COMMODITY TRUST I
Investment owned, at Fair value	[5]	35,099,887
Other Assets in Excess of Liabilities | BREAKWAVE DRY BULK SHIPPING ETF [Member]
Investment owned, at Fair value		35,099,887	[5]	36,288,625	[2]
Other Assets in Excess of Liabilities | SIT RISING RATE ETF
Investment owned, at Fair value	[2]			188,412
Futures Contracts
Value investment owned, Appreciation/(Depreciation)				8,581,555
Futures Contracts | ETF MANAGERS GROUP COMMODITY TRUST I
Investment owned, at Fair value		2,576,110
Futures Contracts | BREAKWAVE DRY BULK SHIPPING ETF
Value investment owned, Appreciation/(Depreciation)		2,576,110		8,581,555
Futures Contracts | Baltic Exchange Panamax T/C Average Shipping Route Index Expiring July 31, 2020 [Member]
Value investment owned, Appreciation/(Depreciation)				556,225
Futures Contracts | Baltic Exchange Panamax T/C Average Shipping Route Index Expiring July 31, 2020 [Member] | BREAKWAVE DRY BULK SHIPPING ETF
Value investment owned, Appreciation/(Depreciation)				556,225
Futures Contracts | Baltic Exchange Panamax T/C Average Shipping Route Index Expiring August 28, 2020 [Member]
Value investment owned, Appreciation/(Depreciation)				512,475
Futures Contracts | Baltic Exchange Panamax T/C Average Shipping Route Index Expiring August 28, 2020 [Member] | BREAKWAVE DRY BULK SHIPPING ETF
Value investment owned, Appreciation/(Depreciation)				512,475
Futures Contracts | Baltic Exchange Panamax T/C Average Shipping Route Index Expiring September 25, 2020 [Member]
Value investment owned, Appreciation/(Depreciation)				492,625
Futures Contracts | Baltic Exchange Panamax T/C Average Shipping Route Index Expiring September 25, 2020 [Member] | BREAKWAVE DRY BULK SHIPPING ETF
Value investment owned, Appreciation/(Depreciation)				492,625
Futures Contracts | Baltic Exchange Supramax T/C Average Shipping Route Expiring July 31, 2020 [Member]
Value investment owned, Appreciation/(Depreciation)				(5,020)
Futures Contracts | Baltic Exchange Supramax T/C Average Shipping Route Expiring July 31, 2020 [Member] | BREAKWAVE DRY BULK SHIPPING ETF
Value investment owned, Appreciation/(Depreciation)				(5,020)
Futures Contracts | Baltic Exchange Supramax T/C Average Shipping Route Expiring August 28, 2020 [Member]
Value investment owned, Appreciation/(Depreciation)				199,250
Futures Contracts | Baltic Exchange Supramax T/C Average Shipping Route Expiring August 28, 2020 [Member] | BREAKWAVE DRY BULK SHIPPING ETF
Value investment owned, Appreciation/(Depreciation)				199,250
Futures Contracts | Baltic Exchange Supramax T/C Average Shipping Route Expiring September 25, 2020 [Member]
Value investment owned, Appreciation/(Depreciation)				222,470
Futures Contracts | Baltic Exchange Supramax T/C Average Shipping Route Expiring September 25, 2020 [Member] | BREAKWAVE DRY BULK SHIPPING ETF
Value investment owned, Appreciation/(Depreciation)				222,470
Futures Contracts | Baltic Capesize Time Charter Expiring July 31, 2020 [Member]
Value investment owned, Appreciation/(Depreciation)				3,644,720
Futures Contracts | Baltic Capesize Time Charter Expiring July 31, 2020 [Member] | BREAKWAVE DRY BULK SHIPPING ETF
Value investment owned, Appreciation/(Depreciation)				3,644,720
Futures Contracts | Baltic Capesize Time Charter Expiring August 28, 2020 [Member]
Value investment owned, Appreciation/(Depreciation)				1,977,550
Futures Contracts | Baltic Capesize Time Charter Expiring August 28, 2020 [Member] | BREAKWAVE DRY BULK SHIPPING ETF
Value investment owned, Appreciation/(Depreciation)				1,977,550
Futures Contracts | Baltic Capesize Time Charter Expiring September 25, 2020 [Member]
Value investment owned, Appreciation/(Depreciation)				$ 981,260
Futures Contracts | Baltic Capesize Time Charter Expiring September 25, 2020 [Member] | BREAKWAVE DRY BULK SHIPPING ETF
Investment owned, Balance, Contracts | Number				520
Value investment owned, Appreciation/(Depreciation)				$ 981,260
Futures Contracts | Baltic Exchange Panamax T/C Average Shipping Route Index Expiring July 31, 2020 [Member] | BREAKWAVE DRY BULK SHIPPING ETF
Investment owned, Balance, Contracts | Number				350
Futures Contracts | Baltic Exchange Panamax T/C Average Shipping Route Index Expiring August 28, 2020 [Member] | BREAKWAVE DRY BULK SHIPPING ETF
Investment owned, Balance, Contracts | Number				350
Futures Contracts | Baltic Exchange Panamax T/C Average Shipping Route Index Expiring September 25, 2020 [Member] | BREAKWAVE DRY BULK SHIPPING ETF
Investment owned, Balance, Contracts | Number				350
Futures Contracts | Baltic Exchange Supramax T/C Average Shipping Route Expiring July 31, 2020 [Member] | BREAKWAVE DRY BULK SHIPPING ETF
Investment owned, Balance, Contracts | Number				180
Futures Contracts | Baltic Exchange Supramax T/C Average Shipping Route Expiring August 28, 2020 [Member] | BREAKWAVE DRY BULK SHIPPING ETF
Investment owned, Balance, Contracts | Number				180
Futures Contracts | Baltic Exchange Supramax T/C Average Shipping Route Expiring September 25, 2020 [Member] | BREAKWAVE DRY BULK SHIPPING ETF
Investment owned, Balance, Contracts | Number				180
Futures Contracts | Baltic Capesize Time Charter Expiring July 31, 2020 [Member] | BREAKWAVE DRY BULK SHIPPING ETF
Investment owned, Balance, Contracts | Number				380
Futures Contracts | Baltic Capesize Time Charter Expiring August 28, 2020 [Member] | BREAKWAVE DRY BULK SHIPPING ETF
Investment owned, Balance, Contracts | Number				450
Futures Contracts | Baltic Exchange Panamax T/C Average Shipping Route Index Expiring April 30, 2021 [Member] | ETF MANAGERS GROUP COMMODITY TRUST I
Investment owned, at Fair value		$ (105,725)
Futures Contracts | Baltic Exchange Panamax T/C Average Shipping Route Index Expiring April 30, 2021 [Member] | BREAKWAVE DRY BULK SHIPPING ETF
Investment owned, Balance, Contracts | Number		265
Value investment owned, Appreciation/(Depreciation)		$ (105,725)
Futures Contracts | Baltic Exchange Panamax T/C Average Shipping Route Index Expiring May 31, 2021 [Member] | ETF MANAGERS GROUP COMMODITY TRUST I
Investment owned, at Fair value		$ (274,390)
Futures Contracts | Baltic Exchange Panamax T/C Average Shipping Route Index Expiring May 31, 2021 [Member] | BREAKWAVE DRY BULK SHIPPING ETF
Investment owned, Balance, Contracts | Number		305
Value investment owned, Appreciation/(Depreciation)		$ (274,390)
Futures Contracts | Baltic Exchange Panamax T/C Average Shipping Route Index Expiring June 30, 2021 [Member] | ETF MANAGERS GROUP COMMODITY TRUST I
Investment owned, at Fair value		$ (624,495)
Futures Contracts | Baltic Exchange Panamax T/C Average Shipping Route Index Expiring June 30, 2021 [Member] | BREAKWAVE DRY BULK SHIPPING ETF
Investment owned, Balance, Contracts | Number		295
Value investment owned, Appreciation/(Depreciation)		$ (624,495)
Futures Contracts | Baltic Exchange Supramax Average Shipping Route Expiring April 30, 2021 [Member] | ETF MANAGERS GROUP COMMODITY TRUST I
Investment owned, at Fair value		$ 192,125
Futures Contracts | Baltic Exchange Supramax Average Shipping Route Expiring April 30, 2021 [Member] | BREAKWAVE DRY BULK SHIPPING ETF
Investment owned, Balance, Contracts | Number		85
Value investment owned, Appreciation/(Depreciation)		$ 192,125
Futures Contracts | Baltic Exchange Supramax Average Shipping Route Expiring May 31, 2021 [Member] | ETF MANAGERS GROUP COMMODITY TRUST I
Investment owned, at Fair value		$ 132,315
Futures Contracts | Baltic Exchange Supramax Average Shipping Route Expiring May 31, 2021 [Member] | BREAKWAVE DRY BULK SHIPPING ETF
Investment owned, Balance, Contracts | Number		85
Value investment owned, Appreciation/(Depreciation)		$ 132,315
Futures Contracts | Baltic Exchange Supramax Average Shipping Route Expiring June 30, 2021 [Member] | ETF MANAGERS GROUP COMMODITY TRUST I
Investment owned, at Fair value		$ (1,840)
Futures Contracts | Baltic Exchange Supramax Average Shipping Route Expiring June 30, 2021 [Member] | BREAKWAVE DRY BULK SHIPPING ETF
Investment owned, Balance, Contracts | Number		85
Value investment owned, Appreciation/(Depreciation)		$ (1,840)
Futures Contracts | Baltic Capesize Time Charter Expiring April 30, 2021 [Member] | ETF MANAGERS GROUP COMMODITY TRUST I
Investment owned, at Fair value		$ 578,830
Futures Contracts | Baltic Capesize Time Charter Expiring April 30, 2021 [Member] | BREAKWAVE DRY BULK SHIPPING ETF
Investment owned, Balance, Contracts | Number		360
Value investment owned, Appreciation/(Depreciation)		$ 578,830
Futures Contracts | Baltic Capesize Time Charter Expiring May 31, 2021 [Member] | ETF MANAGERS GROUP COMMODITY TRUST I
Investment owned, at Fair value		$ 1,336,375
Futures Contracts | Baltic Capesize Time Charter Expiring May 31, 2021 [Member] | BREAKWAVE DRY BULK SHIPPING ETF
Investment owned, Balance, Contracts | Number		315
Value investment owned, Appreciation/(Depreciation)		$ 1,336,375
Futures Contracts | Baltic Capesize Time Charter Expiring June 30, 2021 [Member] | ETF MANAGERS GROUP COMMODITY TRUST I
Investment owned, at Fair value		$ 1,342,915
Futures Contracts | Baltic Capesize Time Charter Expiring June 30, 2021 [Member] | BREAKWAVE DRY BULK SHIPPING ETF
Investment owned, Balance, Contracts | Number		315
Value investment owned, Appreciation/(Depreciation)		$ 1,342,915
Short Futures Contracts
Value investment owned, Appreciation/(Depreciation)				$ (5,144)
Short Futures Contracts | BREAKWAVE DRY BULK SHIPPING ETF
Investment owned, at Fair value
Short Futures Contracts | SIT RISING RATE ETF
Value investment owned, Appreciation/(Depreciation)				(5,144)
Short Futures Contracts | US Treasury 5 Year Note
Value investment owned, Appreciation/(Depreciation)				(5,899)
Short Futures Contracts | US Treasury 5 Year Note | BREAKWAVE DRY BULK SHIPPING ETF
Investment owned, at Fair value
Short Futures Contracts | US Treasury 5 Year Note | SIT RISING RATE ETF
Investment owned, Balance, Contracts | Number				37
Value investment owned, Appreciation/(Depreciation)				$ (5,899)
Short Futures Contracts | US Treasury 2 Year Note
Value investment owned, Appreciation/(Depreciation)				755
Short Futures Contracts | US Treasury 2 Year Note | BREAKWAVE DRY BULK SHIPPING ETF
Investment owned, at Fair value
Short Futures Contracts | US Treasury 2 Year Note | SIT RISING RATE ETF
Investment owned, Balance, Contracts | Number				46
Value investment owned, Appreciation/(Depreciation)				$ 755
Purchased Options [Member]
Investment owned, at Fair value				14,296
Purchased Options [Member] | BREAKWAVE DRY BULK SHIPPING ETF
Investment owned, at Fair value
Purchased Options [Member] | SIT RISING RATE ETF
Investment owned, at Fair value				$ 14,296
Purchased Options [Member] | U.S. Treasury 10 Year Note [Member]
Investment owned, Balance, Contracts | Number				15
Investment owned, at Fair value				$ 14,296
Purchased Options [Member] | U.S. Treasury 10 Year Note [Member] | BREAKWAVE DRY BULK SHIPPING ETF
Investment owned, at Fair value
Purchased Options [Member] | U.S. Treasury 10 Year Note [Member] | SIT RISING RATE ETF
Investment owned, at Fair value				14,296
Short-term Investments [Member] | US Treasury Securities [Member]
Investment owned, at Fair value				4,849,667
Short-term Investments [Member] | BREAKWAVE DRY BULK SHIPPING ETF | US Treasury Securities [Member]
Investment owned, at Fair value	[2]
Short-term Investments [Member] | SIT RISING RATE ETF | US Treasury Securities [Member]
Investment owned, at Fair value	[2]			4,849,667
Written Options Contracts [Member] | US Treasury 5 Year Note
Investment owned, at Fair value				(4,148)
Written Options Contracts [Member] | US Treasury 5 Year Note | BREAKWAVE DRY BULK SHIPPING ETF
Investment owned, at Fair value
Written Options Contracts [Member] | US Treasury 5 Year Note | SIT RISING RATE ETF
Investment owned, Balance, Contracts | Number				9
Investment owned, at Fair value				$ (4,148)

[1] SIT Rising Rate ETF, which had been a series of the Trust, liquidated as of November 18, 2020.

[2] $27,827,859 and $4,849,667, respectively, of cash is pledged as collateral for futures contracts and written options

[3] Annualized seven-day yield as of March 31, 2021

[4] Annualized seven-day yield as of June 30, 2020

[5] $32,006,396 of cash is pledged as collateral for futures contracts