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Creations and Redemptions (Details) - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Mar. 31, 2020 | Mar. 31, 2019 | Mar. 31, 2020 | Mar. 31, 2019
SIT RISING RATE ETF [Member] |  |  |  |
Shares Sold, Shares |  |  |  | 975,000
Shares Redeemed, Shares |  | (1,275,000) | (275,000) | (1,850,000)
Net Increase (Decrease), Shares |  | (1,275,000) | (275,000) | (875,000)
Shares Sold, Capital Increase (Decrease) |  |  |  | $ 24,297,005
Shares Redeemed, Capital Increase (Decrease) |  | (30,628,345) | (6,331,666) | 24,297,005
Net Increase (Decrease), Capital Increase (Decrease) |  | $ (30,628,345) | $ (6,331,666) | $ (20,494,740)
BREAKWAVE DRY BULK SHIPPING ETF |  |  |  |
Shares Sold, Shares | 2,775,000 | 175,000 | 2,850,000 | 175,000
Shares Redeemed, Shares | (50,000) |  | (300,000) |
Net Increase (Decrease), Shares | (50,000) | 175,000 | 2,550,000 | 175,000
Shares Sold, Capital Increase (Decrease) | $ 21,611,870 | $ 1,795,803 | $ 22,763,000 | $ 1,795,803
Shares Redeemed, Capital Increase (Decrease) | (695,550) |  | (4,817,327) |
Net Increase (Decrease), Capital Increase (Decrease) | $ 20,916,320 | $ 1,795,803 | $ (17,945,673) | $ 1,795,803

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- Definition The increase (decrease) during the period in the number of shares issued. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644 + Details
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