Creations and Redemptions (Details) - USD ($)	3 Months Ended		9 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
BREAKWAVE DRY BULK SHIPPING ETF [Member]
Shares Sold, Shares	1,250,000	2,775,000	1,525,000	2,850,000
Shares Redeemed, Shares	(1,725,000)	(50,000)	(4,575,000)	(300,000)
Net Increase (Decrease), Shares	(475,000)	2,725,000	(3,050,000)	2,550,000
Shares Sold, Capital Increase (Decrease)	$ 21,230,015	$ 21,611,870	$ 23,331,316	$ 22,763,000
Shares Redeemed, Capital Increase (Decrease)	(23,034,021)	(695,550)	(45,827,844)	(4,817,327)
Net Increase (Decrease), Capital Increase (Decrease)	$ (1,804,006)	$ 20,916,320	$ (22,496,528)	$ 17,945,673
SIT RISING RATE ETF (PRIOR TO LIQUIDATION) [Member]
Shares Sold, Shares
Shares Redeemed, Shares			(250,040)	(275,000)
Net Increase (Decrease), Shares			(250,040)	(275,000)
Shares Sold, Capital Increase (Decrease)
Shares Redeemed, Capital Increase (Decrease)			(4,998,233)	(6,331,666)
Net Increase (Decrease), Capital Increase (Decrease)			$ (4,998,233)	$ (6,331,666)