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v3.20.4

CONSOLIDATED STATEMENTS OF CHANGES IN PARTNER'S CAPITAL - USD ($) | 3 Months Ended | 12 Months Ended | 161 Months Ended
--- | --- | --- | ---
Dec. 31, 2020 | Mar. 31, 2020 | Dec. 31, 2019 | Mar. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2020
Increase (Decrease) in Partners' Capital |  |  |  |  |  |  |  |
Balance |  | $ (37,823,788) |  | $ (35,624,010) | $ (37,823,788) | $ (35,624,010) | $ (35,315,177) |
Balance (in units) |  | 121,978 |  | 124,386 | 121,978 | 124,386 | 124,386 |
Distribution to Partners |  |  |  |  | $ (4,675,754) | $ (4,696,893) | $ (4,477,923) |
Stock Buyback |  |  |  |  | $ (394,031) | $ (4,050,137) |  | $ (44,718,000)
Stock Buyback (in units) |  |  |  |  | (222) | (2,408) |  |
Net income | $ (970,022) | $ 1,368,783 | $ 1,898,513 | $ 1,500,516 | $ 1,424,528 | $ 6,547,252 | 4,169,090 |
Balance | $ (41,469,045) |  | $ (37,823,788) |  | $ (41,469,045) | $ (37,823,788) | $ (35,624,010) | $ (41,469,045)
Balance (in units) | 121,756 |  | 121,978 |  | 121,756 | 121,978 | 124,386 | 121,756
Subtotal |  |  |  |  |  |  |  |
Increase (Decrease) in Partners' Capital |  |  |  |  |  |  |  |
Balance (in units) |  | 180,225 |  | 180,225 | 180,225 | 180,225 | 180,225 |
Balance (in units) | 180,225 |  | 180,225 |  | 180,225 | 180,225 | 180,225 | 180,225
General Partnership |  |  |  |  |  |  |  |
Increase (Decrease) in Partners' Capital |  |  |  |  |  |  |  |
Balance |  | $ (376,827) |  | $ (354,833) | $ (376,827) | $ (354,833) | $ (351,745) |
Balance (in units) |  | 1,802 |  | 1,802 | 1,802 | 1,802 | 1,802 |
Distribution to Partners |  |  |  |  | $ (46,757) | $ (46,969) | $ (44,779) |
Stock Buyback |  |  |  |  | $ (3,941) | $ (40,498) |  |
Stock Buyback (in units) |  |  |  |  | (2.22) | (24.1) |  |
Net income |  |  |  |  | $ 14,245 | $ 65,473 | 41,691 |
Balance | $ (413,280) |  | $ (376,827) |  | $ (413,280) | $ (376,827) | $ (354,833) | $ (413,280)
Balance (in units) | 1,802 |  | 1,802 |  | 1,802 | 1,802 | 1,802 | 1,802
Treasury Units |  |  |  |  |  |  |  |
Increase (Decrease) in Partners' Capital |  |  |  |  |  |  |  |
Balance (in units) |  | 58,247 |  | 55,839 | 58,247 | 55,839 | 55,839 |
Stock Buyback (in units) |  |  |  |  | (222) | (2,408) |  |
Balance (in units) | 58,469 |  | 58,247 |  | 58,469 | 58,247 | 55,839 | 58,469
Class A |  |  |  |  |  |  |  |
Increase (Decrease) in Partners' Capital |  |  |  |  |  |  |  |
Balance |  | $ (30,287,245) |  | $ (28,527,352) | $ (30,287,245) | $ (28,527,352) | $ (28,280,285) |
Balance (in units) |  | 144,180 |  | 144,180 | 144,180 | 144,180 | 144,180 |
Distribution to Partners |  |  |  |  | $ (3,740,604) | $ (3,757,514) | $ (3,582,339) |
Stock Buyback |  |  |  |  | (315,220) | (3,240,181) |  |
Net income |  |  |  |  | 1,139,622 | 5,237,802 | 3,335,272 |
Balance | $ (33,203,447) |  | $ (30,287,245) |  | $ (33,203,447) | $ (30,287,245) | $ (28,527,352) | $ (33,203,447)
Balance (in units) | 144,180 |  | 144,180 |  | 144,180 | 144,180 | 144,180 | 144,180
Class B |  |  |  |  |  |  |  |
Increase (Decrease) in Partners' Capital |  |  |  |  |  |  |  |
Balance |  | $ (7,159,715) |  | $ (6,741,825) | $ (7,159,715) | $ (6,741,825) | $ (6,683,147) |
Balance (in units) |  | 34,243 |  | 34,243 | 34,243 | 34,243 | 34,243 |
Distribution to Partners |  |  |  |  | $ (888,393) | $ (892,410) | $ (850,805) |
Stock Buyback |  |  |  |  | $ (74,870) | $ (769,458) |  |
Stock Buyback (in units) |  |  |  |  | (42.18) | (457.6) |  |
Net income |  |  |  |  | $ 270,660 | $ 1,243,978 | 792,127 |
Balance | $ (7,852,318) |  | $ (7,159,715) |  | $ (7,852,318) | $ (7,159,715) | $ (6,741,825) | $ (7,852,318)
Balance (in units) | 34,243 |  | 34,243 |  | 34,243 | 34,243 | 34,243 | 34,243

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