Organization And Operations (Narrative) (Details)	12 Months Ended		3 Months Ended
	Dec. 31, 2012	Mar. 31, 2013	Mar. 31, 2013 General Partner [Member] QRE GP [Member]	Mar. 31, 2013 Limited Partner [Member] QRE GP [Member]	Mar. 31, 2013 Limited Partner [Member] Fund [Member]	Mar. 31, 2013 Limited Partners-Public Common [Member]	Mar. 31, 2013 Class B Units [Member]	Mar. 31, 2013 Class B Units [Member] QRE GP [Member]
Organization And Operations [Line Items]
Ownership percentage			0.10%	7.50%	29.30%	63.10%		7.50%
Percentage of management fee converted to units							80.00%
Class B convertible unitholders, outstanding (in units)	0	6,133,558
Issue of units in lieu of management fee							6,133,558
Quarterly administration fee equal to percentage of adjusted EBITDA due to QRM	3.50%