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TREASURY UNITS (Details) |  | 2 Months Ended | 12 Months Ended | 149 Months Ended |
--- | --- | --- | --- | --- | ---
Mar. 10, 2015 shares | Mar. 08, 2020 USD ($) $ / item shares | Dec. 31, 2019 USD ($) $ / item shares | Dec. 31, 2018 USD ($) $ / item shares | Dec. 31, 2017 USD ($) shares | Dec. 31, 2019 USD ($) $ / item shares | Aug. 20, 2007 shares
Treasury units |  |  | 58,247 |  |  | 58,247 |
Period for repurchase of depository receipts | 5 years |  |  |  |  |  |
Depository receipts authorized to be repurchased | 2,000,000 |  |  |  |  |  | 300,000
Number of depository receipts repurchased |  |  |  | 57,803 |  | 1,423,109 |
Repurchase price of depository receipts (in dollars per receipt) | $ / item |  |  |  |  |  | 28.31 |
Units required to be repurchased (in shares) |  |  | 2,408 |  | 23 |  |
Total cost of repurchase | $ |  |  | $ 4,050,137 |  | $ 42,548 | $ 44,324,000 |
Subsequent event |  |  |  |  |  |  |
Number of depository receipts repurchased |  | 3,469 |  |  |  |  |
Repurchase price of depository receipts (in dollars per receipt) | $ / item |  | 62.01 |  |  |  |  |
Total cost of repurchase | $ |  | $ 215,113 |  |  |  |  |
General Partnership |  |  |  |  |  |  |
Treasury units |  |  | 583 |  |  | 583 |
Fixed distribution percentage of unit holders |  |  | 1.00% |  |  |  |
Number of depository receipts repurchased |  |  |  |  |  | 186 |
Total cost of repurchase | $ |  |  | $ 40,498 | $ 40,498 | $ 426 |  |
General Partnership | Subsequent event |  |  |  |  |  |  |
Value of units required to be repurchased | $ |  | 2,689 |  |  |  |  |
Treasury Units |  |  |  |  |  |  |
Units required to be repurchased (in shares) |  |  | 2,408 |  | 23 |  |
Class A |  |  |  |  |  |  |
Fixed distribution percentage of unit holders |  |  | 80.00% |  |  |  |
Repurchase price of depository receipts (in dollars per receipt) | $ / item |  |  |  |  |  | 849.30 |
Total cost of repurchase | $ |  |  | $ 3,240,181 |  | $ 34,038 |  |
Class B |  |  |  |  |  |  |
Fixed distribution percentage of unit holders |  |  | 19.00% |  |  |  |
Number of depository receipts repurchased |  |  |  |  |  | 3,530 |
Repurchase price of depository receipts (in dollars per receipt) | $ / item |  |  |  |  |  | 1,024.08 |
Total cost of repurchase | $ |  |  | $ 769,458 |  | $ 8,084 |  |
Class B | Subsequent event |  |  |  |  |  |  |
Value of units required to be repurchased | $ |  | $ 51,087 |  |  |  |  |
Class A |  |  |  |  |  |  |
Treasury units |  |  | 46,597 |  |  | 46,597 |
Repurchase price of depository receipts (in dollars per receipt) | $ / item |  |  |  | 56.05 |  |  |
Repurchase price of units (in dollars per unit) | $ / item |  |  | 1,681.50 | 1,681.50 |  |  |
Class A | Limited Partner |  |  |  |  |  |  |
Total cost of repurchase | $ |  |  |  | $ 3,240,181 |  |  |
Class B |  |  |  |  |  |  |
Treasury units |  |  | 11,067 |  |  | 11,067 |
Fixed distribution percentage of unit holders |  |  | 19.00% |  |  |  |
Class B | Limited Partner |  |  |  |  |  |  |
Total cost of repurchase | $ |  |  |  | $ 769,458 |  |  |
Treasury Units | General Partnership |  |  |  |  |  |  |
Units required to be repurchased (in shares) |  |  |  | 24.1 |  |  |
Treasury Units | Class B | Limited Partner |  |  |  |  |  |  |
Units required to be repurchased (in shares) |  |  |  | 457.6 |  |  |

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