Partners' Equity (Details) - USD ($) $ / shares in Units, $ in Thousands					3 Months Ended
	Mar. 29, 2019	Oct. 04, 2018	Sep. 29, 2017	Aug. 04, 2014	Mar. 31, 2019	Mar. 31, 2018
Class of Stock [Line Items]
Partners Units, Maximum Aggregate Offering Amount, ATM		$ 50
Proceeds from private placement of common units	$ 62,934				$ 62,934	$ 0
Limited Partner [Member]
Class of Stock [Line Items]
Number of units sold in public offering	2,940,818		5,175,000	12,937,500
Units sold in secondary offering price per unit (in dollars per share)	$ 21.40		$ 22.00
Affiliated Entity [Member]
Class of Stock [Line Items]
Partners' Capital Account, Units, Sold to Related Party	1,401,869