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TREASURY UNITS (Details) |  |  |  | 1 Months Ended | 3 Months Ended | 6 Months Ended | 9 Months Ended | 120 Months Ended | 130 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 10, 2015 shares | Aug. 31, 2007 $ / item shares | Aug. 20, 2007 shares | Sep. 30, 2007 $ / item shares | Dec. 31, 2007 $ / item shares | Jun. 30, 2018 $ / item shares | Sep. 30, 2018 shares | Sep. 30, 2017 USD ($) | Dec. 31, 2017 $ / item shares | Jun. 30, 2018 USD ($) $ / item | Mar. 06, 2008 shares
Treasury units |  |  |  |  |  |  | 55,839 |  |  |  |
Period for repurchase of depository receipts | 5 years |  | 12 months |  |  |  |  |  |  |  |
Depository receipts authorized to be repurchased | 2,000,000 |  | 300,000 |  |  |  |  |  |  |  | 1,500,000
Number of depository receipts repurchased |  | 1,365,306 |  | 1,365,306 | 1,365,306 | 1,365,306 |  |  | 1,365,306 |  |
Repurchase price of depository receipts (in dollars per receipt) | $ / item |  |  |  |  |  |  |  |  |  | 27.14 |
Units repurchased (in shares) |  |  |  |  |  |  | 23 |  |  |  |
Total cost of repurchase | $ |  |  |  |  |  |  |  | $ 42,548 |  | $ 40,274,000 |
General Partnership |  |  |  |  |  |  |  |  |  |  |
Treasury units |  |  |  |  |  |  | 559 |  |  |  |
Fixed distribution percentage of unit holders |  |  |  |  |  |  | 1.00% |  |  |  |
Number of depository receipts repurchased |  | 162 |  | 162 | 162 | 162 |  |  | 162 |  |
Total cost of repurchase | $ |  |  |  |  |  |  |  | 426 |  |  |
Treasury Units |  |  |  |  |  |  |  |  |  |  |
Units repurchased (in shares) |  |  |  |  |  |  | 23 |  |  |  |
Class A |  |  |  |  |  |  |  |  |  |  |
Treasury units |  |  |  |  |  |  | 44,671 |  |  |  |
Fixed distribution percentage of unit holders |  |  |  |  |  |  | 80.00% |  |  |  |
Repurchase price of units (in dollars per unit) | $ / item |  | 814.20 |  | 814.20 | 814.20 | 814.20 |  |  | 814.20 |  |
Total cost of repurchase | $ |  |  |  |  |  |  |  | 34,038 |  |  |
Class B |  |  |  |  |  |  |  |  |  |  |
Treasury units |  |  |  |  |  |  | 10,609 |  |  |  |
Fixed distribution percentage of unit holders |  |  |  |  |  |  | 19.00% |  |  |  |
Number of depository receipts repurchased |  | 3,072 |  | 3,072 | 3,072 | 3,072 |  |  | 3,072 |  |
Total cost of repurchase | $ |  |  |  |  |  |  |  | $ 8,084 |  |  |
Class B | General Partnership |  |  |  |  |  |  |  |  |  |  |
Repurchase price of units (in dollars per unit) | $ / item |  | 926.26 |  | 926.26 | 926.26 | 926.26 |  |  | 926.26 |  |

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