Combined Statements of Assets and Liabilities (Unaudited) - USD ($)	Sep. 30, 2018	Jun. 30, 2018
Assets
Investment in securities, at fair value	$ 61,989,916	$ 52,447,372
Cash		33,280
Interest receivable	8,694	5,249
Segregated cash held by broker	2,925,041	3,328,612
Receivable on open futures contracts	872,169	81,680
Total assets	65,795,820	55,896,193
Liabilities
Options written, at fair value	42,891	70,664
Payable on open futures contracts	88,905	698,426
Due to Sponsor	60,261	51,137
Other accrued expenses	4,045	3,189
Total liabilities	196,102	823,416
Net Assets	65,599,718	55,072,777
SIT RISING RATE ETF [Member]
Assets
Investment in securities, at fair value	60,770,243	51,198,363
Cash
Interest receivable	3,955	807
Segregated cash held by broker	643,266	1,386,738
Receivable on open futures contracts	872,169
Total assets	62,289,633	52,585,908
Liabilities
Options written, at fair value	42,891	70,664
Payable on open futures contracts		698,426
Due to Sponsor	50,217	41,830
Other accrued expenses
Total liabilities	93,108	810,920
Net Assets	$ 62,196,525	$ 51,774,988
Shares outstanding (unlimited authorized)	2,475,040	2,100,040
Net asset value per share	$ 25.13	$ 24.65
Market value per share	$ 25.12	$ 24.66
BREAKWAVE DRY BULK SHIPPING ETF [Member]
Assets
Investment in securities, at fair value	$ 1,219,673	$ 1,249,009
Cash		33,280
Interest receivable	4,739	4,442
Segregated cash held by broker	2,281,775	1,941,874
Receivable on open futures contracts		81,680
Total assets	3,506,187	3,310,285
Liabilities
Options written, at fair value
Payable on open futures contracts	88,905
Due to Sponsor	10,044	9,307
Other accrued expenses	4,045	3,189
Total liabilities	102,994	12,496
Net Assets	$ 3,403,193	$ 3,297,789
Shares outstanding (unlimited authorized)	150,040	150,040
Net asset value per share	$ 22.68	$ 21.98
Market value per share	$ 22.94	$ 22.04