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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%

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