Partners' Capital (Narrative) (Details) (USD $)	3 Months Ended					3 Months Ended			3 Months Ended			3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2012	Mar. 02, 2014	Dec. 31, 2013	Mar. 31, 2014 Class B Units [Member]	Mar. 31, 2013 Class B Units [Member]	Mar. 31, 2014 GP Buyout Transaction [Member] Class B Units [Member]	Mar. 31, 2014 Forecast [Member]	Mar. 31, 2014 First Monthly Distribution [Member]	Apr. 30, 2014 First Monthly Distribution [Member]	Mar. 31, 2014 Second Monthly Distribution [Member]	Mar. 31, 2014 Third Monthly Distribution [Member]	Mar. 31, 2014 Minimum [Member] GP Buyout Transaction [Member] item	Mar. 31, 2014 Maximum [Member] GP Buyout Transaction [Member] item	Mar. 31, 2014 Maximum [Member] GP Buyout Transaction [Member] Class B Units [Member]	Mar. 31, 2014 General Partner [Member] QRE GP [Member]	Mar. 31, 2014 Limited Partner [Member] Fund [Member]	Mar. 31, 2014 Limited Partner [Member] QRE GP [Member]	Mar. 31, 2014 Limited Partners-Public Common [Member]	Mar. 31, 2013 Class B Units [Member]	Apr. 24, 2014 Subsequent Event [Member]	May 31, 2014 Subsequent Event [Member] Second Monthly Distribution [Member]
Partners' Capital Activity [Line Items]
Proceeds from unit offering									$ 100,000,000
Percentage of management fee converted to Class B units																					80.00%
Issue of units in lieu of management fee							6,133,558														6,133,558
Management incentive fee recognized	1,400,000	0	700,000
Number units to be distributed for GP Buyout																11,600,000
Distribution to General Partner																					3,000,000
General partner, outstanding (in units)	0			51,036	51,036
Class B convertible unitholders, outstanding (in units)	6,133,558				6,133,558
Ownership percentage																	0.10%	29.30%	7.50%	63.20%
Number of days after quarter distributions paid	45 days									15 days		45 days	75 days
Cash distribution per unit								$ 0.4744			$ 0.1625											$ 0.1625	$ 0.1625
Distribution coverage ratio														1.0	4.0
Distributions payable	$ 14,144,000				$ 14,155,000