CONSOLIDATED STATEMENTS OF CHANGES IN PARTNERS' CAPITAL (USD $)	Total USD ($)	Subtotal	Class A USD ($)	Class B USD ($)	General Partnership USD ($)	Treasury Units
Balance at Aug. 20, 2007
Increase (Decrease) in Partners' Capital
Stock Buyback	$ (32,860,350)
Stock Buyback (in units)					(114)
Balance at Mar. 31, 2014	(23,226,793)				(231,857)
Balance (in units) at Mar. 31, 2014	129,216	180,225			1,802
Balance at Dec. 31, 2012	(22,515,677)		(18,017,082)	(4,273,666)	(224,929)
Balance (in units) at Dec. 31, 2012	130,444	180,225	144,180	34,243	1,802	49,781
Increase (Decrease) in Partners' Capital
Distribution to Partners	(975,298)		(780,238)	(185,307)	(9,753)
Stock Buyback	(399,487)		(321,240)	(74,335)	(3,912)
Stock Buyback (in units)	(404)					404
Net Income (Loss)	901,625		721,299	171,309	9,016
Balance at Mar. 31, 2013	(22,988,838)		(18,397,261)	(4,361,999)	(229,578)
Balance (in units) at Mar. 31, 2013	130,040	180,225	144,180	34,243	1,802	50,185
Balance at Dec. 31, 2013	(21,848,563)		(17,485,327)	(4,145,076)	(218,160)
Balance (in units) at Dec. 31, 2013	129,487	180,225	144,180	34,243	1,802	50,738
Increase (Decrease) in Partners' Capital
Distribution to Partners	(969,207)		(775,366)	(184,149)	(9,692)
Stock Buyback	(379,409)		(305,230)	(70,470)	(3,709)
Stock Buyback (in units)	(271)			(51.56)	(2.71)	271
Net Income (Loss)	(29,614)		(23,691)	(5,627)	(296)
Balance at Mar. 31, 2014	$ (23,226,793)		$ (18,589,614)	$ (4,405,322)	$ (231,857)
Balance (in units) at Mar. 31, 2014	129,216	180,225	144,180	34,243	1,802	51,009