Equity (Distribution Targets) (Details)	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2013
General Partner [Member]
Incentive Distribution Made to Managing Member or General Partner [Line Items]
Incentive Cash Distribution Allocation	100.00%
Minimum Quarterly Distribution [Member]
Incentive Distribution Made to Managing Member or General Partner [Line Items]
Distribution Payment Targets	$0.2875	0.3306
Minimum Quarterly Distribution [Member] | Limited Partner [Member]
Incentive Distribution Made to Managing Member or General Partner [Line Items]
Incentive Distribution, Distribution Split Marginal Percentage	100.00%
Minimum Quarterly Distribution [Member] | General Partner [Member]
Incentive Distribution Made to Managing Member or General Partner [Line Items]
Incentive Distribution, Distribution Split Marginal Percentage	0.00%
First Target Distribution [Member]
Incentive Distribution Made to Managing Member or General Partner [Line Items]
Distribution Payment Targets	above $0.2875 up to $0.3306
First Target Distribution [Member] | Limited Partner [Member]
Incentive Distribution Made to Managing Member or General Partner [Line Items]
Incentive Distribution, Distribution Split Marginal Percentage	100.00%
First Target Distribution [Member] | General Partner [Member]
Incentive Distribution Made to Managing Member or General Partner [Line Items]
Incentive Distribution, Distribution Split Marginal Percentage	0.00%
Second Target Distribution [Member]
Incentive Distribution Made to Managing Member or General Partner [Line Items]
Distribution Payment Targets	above $0.3306 up to $0.3594
Second Target Distribution [Member] | Limited Partner [Member]
Incentive Distribution Made to Managing Member or General Partner [Line Items]
Incentive Distribution, Distribution Split Marginal Percentage	85.00%
Second Target Distribution [Member] | General Partner [Member]
Incentive Distribution Made to Managing Member or General Partner [Line Items]
Incentive Distribution, Distribution Split Marginal Percentage	15.00%
Third Target Distribution [Member]
Incentive Distribution Made to Managing Member or General Partner [Line Items]
Distribution Payment Targets	above $0.3594 up to $0.4313
Third Target Distribution [Member] | Limited Partner [Member]
Incentive Distribution Made to Managing Member or General Partner [Line Items]
Incentive Distribution, Distribution Split Marginal Percentage	75.00%
Third Target Distribution [Member] | General Partner [Member]
Incentive Distribution Made to Managing Member or General Partner [Line Items]
Incentive Distribution, Distribution Split Marginal Percentage	25.00%
Target Distribution After Third Target [Member]
Incentive Distribution Made to Managing Member or General Partner [Line Items]
Distribution Payment Targets	above $0.4313
Target Distribution After Third Target [Member] | Limited Partner [Member]
Incentive Distribution Made to Managing Member or General Partner [Line Items]
Incentive Distribution, Distribution Split Marginal Percentage	50.00%
Target Distribution After Third Target [Member] | General Partner [Member]
Incentive Distribution Made to Managing Member or General Partner [Line Items]
Incentive Distribution, Distribution Split Marginal Percentage	50.00%