Combined Statements of Changes in Net Assets (Unaudited) - USD ($)	3 Months Ended			9 Months Ended
	Mar. 31, 2018		Mar. 31, 2017	Mar. 31, 2018		Mar. 31, 2017
SIT RISING RATE ETF [Member]
Net Assets at Beginning of Period	$ 33,105,857		$ 10,655,701	$ 20,834,979		$ 16,745,969
Increase (decrease) in Net Assets from share transactions
Addition of shares, respectively	6,112,760		8,288,095	23,486,775		9,465,000
Redemption of shares, respectively				(5,823,990)		(7,908,070)
Net increase (decrease) in Net Assets from share transactions	6,112,760		8,288,095	17,662,785		1,556,930
Increase (decrease) in Net Assets from operations
Net investment income (loss)	17,297		(41,137)	(61,534)		(128,964)
Net realized gain (loss)	1,668,846		147,281	2,183,870		521,605
Change in net unrealized gain (loss)	(652,845)		(357,457)	(368,185)		(3,057)
Net Increase (decrease) in Net Assets from operations	1,033,298		(251,313)	1,754,151		389,584
Net Assets at End of Period	40,251,915		18,692,483	40,251,915		18,692,483
BREAKWAVE DRY BULK SHIPPING ETF [Member]
Net Assets at Beginning of Period	1,000	[1]		1,000	[1]
Increase (decrease) in Net Assets from share transactions
Addition of shares, respectively	4,868,290	[1]		4,868,290	[1]
Redemption of shares, respectively	(1,126,975)	[1]		(1,126,975)	[1]
Net increase (decrease) in Net Assets from share transactions	3,741,315	[1]		3,741,315	[1]
Increase (decrease) in Net Assets from operations
Net investment income (loss)	(7,990)	[1]		(7,990)	[1]
Net realized gain (loss)		[1]			[1]
Change in net unrealized gain (loss)	(352,150)	[1]		(352,150)	[1]
Net Increase (decrease) in Net Assets from operations	(360,140)	[1]		(360,140)	[1]
Net Assets at End of Period	3,382,175	[1]		3,382,175	[1]
Net Assets at Beginning of Period	33,106,857		10,655,701	20,834,979		16,745,969
Addition of shares, respectively	10,981,050		8,288,095	28,355,065		9,465,000
Redemption of shares, respectively	(1,126,975)			(6,950,965)		(7,908,070)
Net increase (decrease) in Net Assets from share transactions	9,854,075		8,288,095	21,404,100		1,556,930
Net investment income (loss)	9,307		(41,137)	(69,524)		(128,964)
Net realized gain (loss)	1,668,846		147,281	2,183,870		521,605
Change in net unrealized gain (loss)	(1,004,995)		(357,457)	(720,335)		(3,057)
Net Increase (decrease) in Net Assets from operations	673,158		(251,313)	1,394,011		389,584
Net Assets at End of Period	$ 43,634,090		$ 18,692,483	$ 43,634,090		$ 18,692,483

[1] Period from March 22, 2018 (commencement of investment operations) to March 31, 2018.