Net Income per Limited Partner Unit - Schedules of Computations (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Earnings per Unit by Type of Partner [Line Items]
Net income attributable to the partners	$ 76,470	$ 45,690	$ 101,331	$ 96,872
Weighted average limited partners’ units outstanding	105,440	105,440	105,440	105,440
Limited partners’ per unit interest in earnings—basic and diluted:	$ 0.73	$ 0.43	$ 0.96	$ 0.92
Limited Partner
Earnings per Unit by Type of Partner [Line Items]
Net income attributable to partnership	$ 76,470	$ 45,690	$ 101,331	$ 96,872