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Schedule of Investments (Parenthetical) - SIT RISING RATE ETF [Member]	6 Months Ended	9 Months Ended
	Jun. 30, 2015 USD ($) $ / Warrant	Mar. 31, 2016 USD ($) $ / Warrant
Purchased Options [Member]
Investment Owned, Subject to Option, Price | $ / Warrant	126
Purchased Options [Member] | CBT U.S. Treasury 10 Year Note [Member]
Investment Owned, Subject to Option, Price | $ / Warrant	126
Investment Owned, Subject to Option, Exercise Dates	7/24/2015	4/22/2016
Investment Owned, at Cost	$ 20,625	$ 74,941
Investment Owned, Percent of Net Assets	0.30%
Short-term Investments [Member]
Investment Owned, at Cost	$ 5,661,952	$ 18,928,445
Investment Owned, Percent of Net Assets	93.40%	97.10%
Short-term Investments [Member] | US Treasury Securities [Member]
Investment Owned, Subject to Option, Exercise Dates		4/21/2016
Investment Owned, at Cost		$ 18,247,369
Investment Owned, Percent of Net Assets		93.60%
Short-term Investments [Member] | First American US Treasury Money Market Fund [Member]
Investment Owned, Percent of Net Assets	0.00%	0.13%
Assets in Excess of Other Liabilities [Member]
Investment Owned, Percent of Net Assets	100.00%	100.00%
Investment Owned Percent Of Other Liabilities	6.30%	2.90%
Written Options Contracts [Member] | CBT U.S. Treasury 5 Year Note [Member]
Investment Owned, Subject to Option, Price | $ / Warrant	119	120
Investment Owned, Subject to Option, Exercise Dates	7/24/2015	4/22/2016
Investment Owned Premiums Received	$ 21,797	$ 76,048
Short Futures Contracts [Member] | CBT U.S. Treasury 5 Year Note [Member]
Investment Owned, Subject to Option, Exercise Dates	September 2015	June 2016
Investment Owned, Face Amount	$ 2,862,188	$ 9,329,633
Short Futures Contracts [Member] | CBT U.S. Treasury 2 Year Note [Member]
Investment Owned, Subject to Option, Exercise Dates	September 2015	June 2016
Investment Owned, Percent of Net Assets		0.00%
Investment Owned, Face Amount	$ 13,793,063	$ 41,562,500
Investments [Member]
Investment Owned, at Cost	$ 5,682,577	$ 19,003,386
Investment Owned, Percent of Net Assets	93.70%	97.10%
Money Market Funds [Member]
Investment Owned, at Cost		$ 681,076
Investment Owned, Percent of Net Assets		3.50%

X

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
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