CONSOLIDATED STATEMENTS OF CHANGES IN PARTNERS' CAPITAL - USD ($)	Subtotal	General Partnership	Treasury Units	Class A	Class B	Total
Balance at Dec. 31, 2014		$ (272,859)		$ (21,910,488)	$ (5,184,335)	$ (27,367,682)
Balance (in units) at Dec. 31, 2014	180,225	1,802	52,572	144,180	34,243	127,653
Increase (Decrease) in Partners' Capital
Distribution to Partners		$ (9,513)		$ (761,064)	$ (180,753)	$ (951,330)
Stock Buyback		(12,135)		(975,731)	(230,574)	(1,218,440)
Stock Buyback (in units)			809
Net income		4,097		327,726	77,835	409,658
Balance at Mar. 31, 2015		$ (290,410)		$ (23,319,557)	$ (5,517,827)	$ (29,127,794)
Balance (in units) at Mar. 31, 2015	180,225	1,802	53,381	144,180	34,243	126,844
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		$ (9,369)		$ (749,540)	$ (178,016)	$ (936,925)
Stock Buyback		(6,783)	$ 451	(558,723)	(128,874)	(694,380)
Net income		12,308		984,611	233,845	1,230,764
Balance at Mar. 31, 2016		$ (310,714)		$ (24,997,187)	$ (5,903,593)	$ (31,211,494)
Balance (in units) at Mar. 31, 2016	180,225	1,802	55,302	144,180	34,243	124,923