Cash Distributions and Earnings per Unit (Tables)

12 Months Ended

Dec. 31, 2013

CASH DISTRIBUTIONS AND EARNINGS PER UNIT [Abstract]

Earnings per share, basic and diluted

		Marginal Percentage Interest in Distributions
	Total Quarterly Distribution Target Amount	Common and Subordinated Unitholders		General Partner
Minimum Quarterly Distribution	$0.35	98	%	2	%
First Target Distribution	up to $0.4025	98	%	2	%
Second Target Distribution	above $0.4025 up to $0.4375	85	%	15	%
Third Target Distribution	above $0.4375 up to $0.525	75	%	25	%
Thereafter	Above $0.525	50	%	50	%

Earnings per common share

	Year Ended December 31, 2013			Year Ended December 31, 2012			Year Ended December 31,  2011
Net income	$	59,006		$	95,898			$	65,335
Earnings attributable to:
Common unit holders		55,949			93,566				60,506
Subordinated unit holders		—			—				3,522
Subordinated Series A unit holders		—			—				—
Weighted average units outstanding (basic and diluted)
Common unit holders		66,317,588			58,008,617				45,409.807
Subordinated unit holders		—			—				7,621,843
Subordinated Series A unit holders		—			—				1,000,000
Earnings per unit (basic and diluted):
Common unit holders	$	0.84		$	1.61			$	1.33
Subordinated unit holders	$	—		$	—			$	0.46
Earnings per unit — distributed (basic and diluted):
Common unit holders	$	1.82		$	1.79			$	1.76
Subordinated unit holders	$	—		$	—			$	1.75
Loss per unit — undistributed (basic and diluted):
Common unit holders	$	(0.98	)	$	(0.18	)		$	(0.43	)
Subordinated unit holders	$	—		$	—			$	(1.29	)