Partnership Distributions - Summary of Distributions (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018
Distribution Made to Limited Partner
Distribution (in dollars per share)	$ 0.1875	$ 0.6878	$ 0.6716	$ 0.6418	$ 0.6132	$ 0.5858
Distributions	$ 16,906	$ 62,012	$ 32,418	$ 30,058	$ 27,792	$ 25,613
Holders of IDRs	0	0	5,820	4,640	3,507	2,421
Common Units
Distribution Made to Limited Partner
Distributions	16,906	62,012	26,598	25,418	14,534	13,876
Subordinated Units
Distribution Made to Limited Partner
Distributions	$ 0	$ 0	$ 0	$ 0	$ 9,751	$ 9,316

Amount of cash distribution paid to unit-holder of limited partnership (LP).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770

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Per unit of ownership amount of cash distributions declared to unit-holder of a limited partnership (LP).

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Amount of incentive obligation paid in cash or stock during the period to a limited liability corporation managing member or limited partnership general partner.

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