Net Income per Limited Partner Unit - Schedules of Computations (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Earnings per Unit by Type of Partner [Line Items]
Net income attributable to the partners	$ 17,813	$ 82,345	$ 119,144	$ 179,217
Weighted average limited partners’ units outstanding	105,440	105,440	105,440	105,440
Limited partners’ per unit interest in earnings—basic and diluted:	$ 0.17	$ 0.78	$ 1.13	$ 1.70
Limited Partner
Earnings per Unit by Type of Partner [Line Items]
Net income attributable to partnership	$ 17,813	$ 82,345	$ 119,144	$ 179,217