Net Income Per Limited Partner Unit (Income In Excess Of Distribution) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						5 Months Ended	12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Dec. 31, 2014	Dec. 31, 2015
Distribution declared							$ 12,052	$ 31,966
Net income subsequent to the IPO in excess of distribution							1,525	7,865
Limited partners' interest in net income subsequent to IPO	$ 91,175	$ 87,046	$ 87,243	$ 88,389	$ 93,929	$ 118,173	$ 13,577	$ 39,831
Distribution Made to Limited Partner, Distributions Paid, Per Unit							$ 0.45	$ 1.18
Common units [Member]
Distribution declared							$ 6,403	$ 16,980
Net income subsequent to the IPO in excess of distribution							810	4,178
Limited partners' interest in net income subsequent to IPO							7,213	21,158
Subordinated units [Member]
Distribution declared							5,649	14,986
Net income subsequent to the IPO in excess of distribution							715	3,687
Limited partners' interest in net income subsequent to IPO							$ 6,364	$ 18,673