Partnership Equity (Details) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Number of Units
Managing general partner units	48.620	48.620
Limited partner units	923.783	923.783
Total	972.403	972.403
Net income (loss)
Managing general partner units	$ 12,870	$ 137
Limited partner units	45,937	(34,031)
Net income (loss)	$ 58,807	$ (33,894)
Net income (loss) per unit
Managing general partner units (in dollars per unit)	$ 264.71	$ 2.82
Limited partner units (in dollars per unit)	$ 49.73	$ (36.84)