Net Asset Value and Financial Highlights (Details) - $ / shares		3 Months Ended		6 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019		Dec. 31, 2018
BREAKWAVE DRY BULK SHIPPING ETF
Net Asset Value
Net asset value per Share, beginning of Period		$ 19.65	$ 22.68	$ 13.25		$ 21.98
Net investment income (loss)		(0.17)	(0.12)	(0.28)		(0.30)
Net realized and unrealized gain (loss)		(4.11)	(4.00)	2.40		(3.12)
Net Income (Loss)		(4.28)	(4.12)	2.12		(3.42)
Net Asset Value per Share, end of Period		15.37	18.56	15.37		18.56
Market Value per Share, end of Period		$ 15.45	$ 17.92	$ 15.45		$ 17.92
Ratios to Average Net Assets
Expense Ratio		5.09%	4.35%	4.89%	[1],[2]	4.43%	[1],[2]
Expense Ratio before Waiver/Assumption		31.35%	23.98%	25.77%	[1],[2]	21.70%	[1],[2]
Net Investment Income (Loss)	[2]	(3.69%)	(2.49%)	(3.19%)		(2.79%)
Total Return, at Net Asset Value	[2],[3]	(21.78%)	(18.17%)	16.00%		(15.56%)
Total Return, at Market Value	[2],[3]	(21.61%)	(21.88%)	17.49%		(18.69%)
SIT RISING RATE ETF [Member]
Net Asset Value
Net asset value per Share, beginning of Period		$ 22.61	$ 25.13	$ 22.70		$ 24.65
Net investment income (loss)		0.05	0.07	0.12		0.12
Net realized and unrealized gain (loss)		0.30	(1.14)	0.14		(0.71)
Net Income (Loss)		0.35	(1.07)	0.26		(0.59)
Net Asset Value per Share, end of Period		22.96	24.06	22.96		24.06
Market Value per Share, end of Period		$ 22.97	$ 24.09	$ 22.97		$ 24.09
Ratios to Average Net Assets
Expense Ratio		1.06%	1.11%	1.08%	[1],[2]	1.19%	[1],[2]
Expense Ratio before Waiver/Assumption		7.47%	1.22%	6.59%	[1],[2]	1.36%	[1],[2]
Net Investment Income (Loss)	[2]	0.93%	1.08%	1.02%		1.02%
Total Return, at Net Asset Value	[2],[3]	1.55%	(4.26%)	1.15%		(2.39%)
Total Return, at Market Value	[2],[3]	1.50%	(4.26%)	1.06%		(2.31%)

[1] For Sit Rising Rate ETF, effective January 1, 2018, Fund expenses have been capped at 1.00% of average daily net assets, plus brokerage commissions and interest expense.

[2] Percentages are annualized

[3] Percentages are not annualized