Statements of Assets and Liabilities (Unaudited) - USD ($)	Sep. 30, 2017	Jun. 30, 2017
SIT RISING RATE ETF [Member]
Assets
Investment in securities, at fair value (cost $25,951,275, $20,283,172, $25,951,275, and $20,283,172, respectively)	$ 25,988,279	$ 20,319,994
Interest receivable	475	712
Segregated cash held by broker	399,143	521,215
Receivable on open futures contracts	240,407	21,795
Total assets	26,628,304	20,863,716
Liabilities
Options written, at fair value (premiums received $24,407, $16,688, $24,407 and $16,688, respectively)	8,500	3,477
Due to Sponsor	30,438	25,260
Total liabilities	38,938	28,737
Net Assets	$ 26,589,366	$ 20,834,979
Shares outstanding (unlimited authorized)	1,150,040	900,040
Net asset value per share	$ 23.12	$ 23.15
Market value per share	$ 23.03	$ 23.02
ETF MANAGERS GROUP COMMODITY TRUST I [Member]
Assets
Investment in securities, at fair value (cost $25,951,275, $20,283,172, $25,951,275, and $20,283,172, respectively)	$ 25,988,279	$ 20,319,994
Interest receivable	475	712
Segregated cash held by broker	399,143	521,215
Receivable on open futures contracts	240,407	21,795
Total assets	26,628,304	20,863,716
Liabilities
Options written, at fair value (premiums received $24,407, $16,688, $24,407 and $16,688, respectively)	8,500	3,477
Due to Sponsor	30,438	25,260
Total liabilities	38,938	28,737
Net Assets	$ 26,589,366	$ 20,834,979