CONSOLIDATED STATEMENTS OF CHANGES IN PARTNERS' CAPITAL (USD $)	Subtotal	Class A USD ($)	Class B USD ($)	General Partnership USD ($)	Treasury Units	Total USD ($)
Balance at Aug. 20, 2007
Increase (Decrease) in Partners' Capital
Stock Buyback (in units)				(129)
Balance at Dec. 31, 2013				$ (218,160)
Balance (in units) at Dec. 31, 2013	180,225			1,802
Balance at Aug. 20, 2007
Increase (Decrease) in Partners' Capital
Stock Buyback						(35,167,000)
Stock Buyback (in units)			(2,452)	(129)
Balance at Dec. 31, 2014			(5,184,335)	(272,859)		(27,367,682)
Balance (in units) at Dec. 31, 2014	180,225		34,243	1,802		127,653
Balance at Dec. 31, 2011		(17,052,134)	(4,045,782)	(212,935)		(21,310,851)
Balance (in units) at Dec. 31, 2011	180,225	144,180	34,243	1,802	48,741	131,484
Increase (Decrease) in Partners' Capital
Distribution to Partners		(3,145,928)	(747,158)	(39,324)		(3,932,410)
Stock Buyback		(726,058)	(171,148)	(9,008)		(906,214)
Stock Buyback (in units)					1,040	(1,040)
Net income		2,907,038	690,422	36,338		3,633,798
Balance at Dec. 31, 2012		(18,017,082)	(4,273,666)	(224,929)		(22,515,677)
Balance (in units) at Dec. 31, 2012	180,225	144,180	34,243	1,802	49,781	130,444
Increase (Decrease) in Partners' Capital
Distribution to Partners		(3,114,930)	(739,796)	(38,936)		(3,893,662)
Stock Buyback		(877,623)	(206,137)	(10,849)		(1,094,609)
Stock Buyback (in units)			(182)	(10)	957	(957)
Net income		4,524,308	1,074,523	56,554		5,655,385
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		(3,086,709)	(733,093)	(38,584)		(3,858,386)
Stock Buyback		(2,158,332)	(500,888)	(26,363)		(2,685,583)
Stock Buyback (in units)			(349)	(18)	1,834	(1,834)
Net income		819,880	194,722	10,248		1,024,850
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