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v3.19.2

SUBSEQUENT EVENTS (Details) |  | 1 Months Ended | 3 Months Ended | 6 Months Ended | 132 Months Ended | 142 Months Ended
--- | --- | --- | --- | --- | --- | ---
Aug. 31, 2007 shares | Aug. 05, 2019 USD ($) $ / item shares | Sep. 30, 2007 shares | Mar. 31, 2019 shares | Dec. 31, 2007 shares | Jun. 30, 2019 USD ($) shares | Dec. 31, 2018 shares | Jun. 30, 2019 USD ($) $ / item
Subsequent events |  |  |  |  |  |  |  |
Number of depository receipts repurchased | 1,413,200 |  | 1,413,200 |  | 1,413,200 | 1,413,200 | 1,413,200 |
Repurchase price of depository receipts (in dollars per receipt) | $ / item |  |  |  |  |  |  |  | 28.09
Total cost of repurchase | $ |  |  |  |  |  | $ 3,305,651 |  | $ 43,579,000
Units required to be repurchased (in shares) |  |  |  |  |  | 1,995 |  |
Subsequent event |  |  |  |  |  |  |  |
Subsequent events |  |  |  |  |  |  |  |
Number of depository receipts repurchased |  | 1,660 |  |  |  |  |  |
Repurchase price of depository receipts (in dollars per receipt) | $ / item |  | 60.20 |  |  |  |  |  |
Price per unit of depository receipts | $ / item |  | 1,806.00 |  |  |  |  |  |
Total cost of repurchase | $ |  | $ 99,972 |  |  |  |  |  |
Class B |  |  |  |  |  |  |  |
Subsequent events |  |  |  |  |  |  |  |
Number of depository receipts repurchased | 345 |  | 345 | 345 |  |  | 345 |
Total cost of repurchase | $ |  |  |  |  |  | $ 628,044 |  |
Class B | Subsequent event |  |  |  |  |  |  |  |
Subsequent events |  |  |  |  |  |  |  |
Units required to be repurchased (in shares) |  | 13 |  |  |  |  |  |
Value of units required to be repurchased | $ |  | $ 23,735 |  |  |  |  |  |
General Partnership |  |  |  |  |  |  |  |
Subsequent events |  |  |  |  |  |  |  |
Number of depository receipts repurchased | 182 |  | 182 | 182 |  |  | 182 |
Total cost of repurchase | $ |  |  |  |  |  | $ 33,055 |  |
Units required to be repurchased (in shares) |  |  |  |  |  | 20 |  |
Value of units required to be repurchased | $ |  |  |  |  |  | $ 33,055 |  |
General Partnership | Subsequent event |  |  |  |  |  |  |  |
Subsequent events |  |  |  |  |  |  |  |
Units required to be repurchased (in shares) |  | 1 |  |  |  |  |  |
Value of units required to be repurchased | $ |  | $ 1,249 |  |  |  |  |  |

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