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SUBSEQUENT EVENTS (Details) - USD ($) | 1 Months Ended | 6 Months Ended | 94 Months Ended
--- | --- | --- | ---
Aug. 05, 2015 | Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015
Subsequent events |  |  |  |
Repurchase of depository receipts |  | 30,080 |  | 1,316,996
Repurchase price of depository receipts |  | $ 49.63 |  | $ 26.20
Repurchase price of units |  | $ 1,488.90 |  |
Repurchase of depository receipts |  | $ 1,505,645 |  |
Stock Buyback (in units) |  | 1,253 | 664 |
Total cost of repurchase |  | $ 1,879,001 | $ 941,477 | $ 37,046,000
Class B |  |  |  |
Subsequent events |  |  |  |
Repurchase of depository receipts |  |  |  | 2,690
Repurchase price of units |  |  |  | $ 833.09
Stock Buyback (in units) |  | 238 |  |
Total cost of repurchase |  | $ 354,688 | 175,019 |
General Partnership |  |  |  |
Subsequent events |  |  |  |
Repurchase of depository receipts |  |  |  | 142
Stock Buyback (in units) |  | 13 |  |
Total cost of repurchase |  | $ 18,668 | $ 9,212 |
Subsequent event |  |  |  |
Subsequent events |  |  |  |
Repurchase of depository receipts | 4,241 |  |  |
Repurchase price of depository receipts | $ 49.23 |  |  |
Repurchase price of units | $ 1,476.99 |  |  |
Repurchase of depository receipts | $ 215,102 |  |  |
Subsequent event | Class B |  |  |  |
Subsequent events |  |  |  |
Stock Buyback (in units) | 33.6 |  |  |
Total cost of repurchase | $ 49,589 |  |  |
Subsequent event | General Partnership |  |  |  |
Subsequent events |  |  |  |
Stock Buyback (in units) | 1.8 |  |  |
Total cost of repurchase | $ 2,610 |  |  |

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- Definition Represents the average price at which depository receipts are repurchased under the equity repurchase program. + References No definition available. + Details
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- Definition Value of units that were previously issued and have been repurchased during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 272 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6828210&loc=d3e70191-108054 + Details
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