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CONSOLIDATED STATEMENTS OF CHANGES IN PARTNERS' CAPITAL - USD ($) | Subtotal | General Partnership | Treasury Units | Class A | Class B | Total
--- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2015 |  | $ (306,870) |  | $ (24,673,535) | $ (5,830,548) | $ (30,810,953)
Balance (in units) at Dec. 31, 2015 | 180,225 | 1,802 | (54,851) | 144,180 | 34,243 | 125,374
Increase (Decrease) in Partners' Capital |  |  |  |  |  |
Distribution to Partners |  | $ (18,738) |  | $ (1,499,080) | $ (356,032) | $ (1,873,850)
Stock Buyback |  | (6,783) |  | (558,723) | (128,874) | $ (694,380)
Stock Buyback (in units) |  |  | (451) |  |  | (451)
Net income |  | 22,113 |  | 1,769,081 | 420,157 | $ 2,211,351
Balance at Jun. 30, 2016 |  | $ (310,278) |  | $ (24,962,257) | $ (5,895,297) | $ (31,167,832)
Balance (in units) at Jun. 30, 2016 | 180,225 | 1,802 | (55,302) | 144,180 | 34,243 | 124,923
Balance at Dec. 31, 2016 |  | $ (340,840) |  | $ (27,407,924) | $ (6,475,961) | $ (34,224,726)
Balance (in units) at Dec. 31, 2016 | 180,225 | 1,802 | (55,816) | 144,180 | 34,243 | 124,409
Increase (Decrease) in Partners' Capital |  |  |  |  |  |
Distribution to Partners |  | $ (22,392) |  | $ (1,791,334) | $ (425,442) | $ (2,239,168)
Stock Buyback |  | (426) |  | (34,038) | (8,084) | $ (42,548)
Stock Buyback (in units) |  |  | (23) |  |  | (23)
Net income |  | 43,779 |  | 3,502,353 | 831,809 | $ 4,377,941
Balance at Jun. 30, 2017 |  | $ (319,879) |  | $ (25,730,943) | $ (6,077,678) | $ (32,128,500)
Balance (in units) at Jun. 30, 2017 | 180,225 | 1,802 | (55,839) | 144,180 | 34,243 | 124,386

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