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Agreements (Details) - USD ($)
 3 Months Ended 5 Months Ended 9 Months Ended
Mar. 22, 2018
Jan. 01, 2018
Mar. 31, 2020
Mar. 31, 2019
Jun. 01, 2018
Mar. 31, 2020
Mar. 31, 2019
Agreements (Textual)              
Waiver of commodity trading advisor fees     $ 25,190 $ 8,427   $ 41,403 $ 31,926
Expense related to distribution or servicing and underwriting fees     7,796 8,382   23,562 25,518
Noninterest expense commission expense     62,528 21,356   80,820 72,311
Costs and expenses     330,149 335,836   854,421 1,088,098
Management fee expense     12,373 12,328   37,535 37,532
Revised annual sponsor fee     49,725 50,073   150,269 160,322
Admin/accounting/custodian/transfer agent fees     29,701 29,023   89,755 88,357
Wholesale support fees     9,670 17,439   $ 27,163 63,657
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     3,863 4,314   $ 11,675 13,134
Percentage of brokerage commissions and fees           0.09%  
Noninterest expense commission expense     1,120 11,906   $ 3,913 47,768
Trustee fees     621 616   1,878 1,877
Costs and expenses     115,209 171,928   351,317 572,487
Management fee expense     6,158 6,164   18,754 18,766
Revised annual sponsor fee     18,647 19,252   56,351 66,489
Admin/accounting/custodian/transfer agent fees     14,322 13,883   43,280 42,265
Wholesale support fees     1,369 10,577   4,952 42,248
Fund expenses     100,377 54,256   297,853 102,242
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] | Custody Services [Member]              
Agreements (Textual)              
Assets under management percentage           0.01%  
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.          
SIT RISING RATE ETF [Member] | Sponsors Advisory Services [Member]              
Agreements (Textual)              
Advisory services management fees percentage           0.15%  
Waiver of commodity trading advisor fees     25,190 8,427   $ 41,403 31,926
Payments for fees     100,377 54,256   $ 297,853 102,242
Management fee expense   $ 75,000          
Description CTA fee   Effective January 1, 2018, RISE’s CTA fee, calculated daily and paid monthly in arrears, is .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          
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  
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     25,190 8,427   $ 41,403 31,926
Assets under management percentage           0.05%  
Expense related to distribution or servicing and underwriting fees     3,933 4,068   $ 11,887 12,384
Percentage of brokerage commissions and fees           0.40%  
Noninterest expense commission expense     61,408 9,450   $ 76,907 24,543
Trustee fees     621 616   1,878 1,877
Costs and expenses     214,940 163,908   503,104 515,611
Management fee expense     6,215 6,164   18,781 18,766
Administrative and other expenses absorbed by sponsor     67,532 125,689   284,850 382,072
Revised annual sponsor fee     31,078 30,821   93,918 93,833
Admin/accounting/custodian/transfer agent fees     15,379 15,140   46,475 46,092
Wholesale support fees     8,301 $ 6,862   22,211 $ 21,409
BREAKWAVE DRY BULK SHIPPING ETF | Minimum [Member]              
Agreements (Textual)              
Accrued professional fees, current     $ 45,000     45,000  
Custody fees           $ 4,800  
BREAKWAVE DRY BULK SHIPPING ETF | Custody Services [Member]              
Agreements (Textual)              
Assets under management percentage           0.12%  
Management fee expense           $ 25,000  
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%            
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