CONSOLIDATED STATEMENTS OF CHANGES IN PARTNERS' CAPITAL - USD ($)	Subtotal	Class A	Class B	General Partnership	Treasury Units	Total
Balance at Dec. 31, 2013		$ (17,485,327)	$ (4,145,076)	$ (218,160)		$ (21,848,563)
Balance (in units) at Dec. 31, 2013	180,225	144,180	34,243	1,802	50,738	129,487
Increase (Decrease) in Partners' Capital
Distribution to Partners		$ (1,548,307)	$ (367,723)	$ (19,354)		$ (1,935,384)
Stock Buyback		(757,246)	(175,019)	(9,212)		$ (941,477)
Stock Buyback (in units)					664	664
Net income		201,782	47,923	2,522		$ 252,227
Balance at Jun. 30, 2014		$ (19,589,098)	$ (4,639,895)	$ (244,204)		$ (24,473,197)
Balance (in units) at Jun. 30, 2014	180,225	144,180	34,243	1,802	51,402	128,823
Balance at Dec. 31, 2014		$ (21,910,488)	$ (5,184,335)	$ (272,859)		$ (27,367,682)
Balance (in units) at Dec. 31, 2014	180,225	144,180	34,243	1,802	52,572	127,653
Increase (Decrease) in Partners' Capital
Distribution to Partners		$ (1,519,908)	$ (360,978)	$ (18,999)		$ (1,899,885)
Stock Buyback		(1,505,645)	$ (354,688)	$ (18,668)		$ (1,879,001)
Stock Buyback (in units)			238	13	1,253	1,253
Net income		1,204,893	$ 286,162	$ 15,061		$ 1,506,116
Balance at Jun. 30, 2015		$ (23,731,148)	$ (5,613,839)	$ (295,465)		$ (29,640,452)
Balance (in units) at Jun. 30, 2015	180,225	144,180	34,243	1,802	53,825	126,400