Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands		3 Months Ended				6 Months Ended
	Feb. 05, 2020	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenues:
Revenues		$ 114,807		$ 130,751		$ 242,661	$ 265,248
Operating costs and expenses:
Operations (exclusive of depreciation and amortization)		34,737		40,602		69,718	78,121
Depreciation and amortization		25,034		24,247		49,012	48,071
General and administrative		2,535		1,988		5,237	4,608
Total operating costs and expenses		62,306		66,837		123,967	130,800
Operating income		52,501		63,914		118,694	134,448
Other income (expense):
Equity in earnings of equity method investments		2,156		1,783		3,870	3,883
Interest expense		(13,779)		(19,230)		(31,546)	(38,252)
Interest income		2,813		551		5,031	1,079
Gain on Sales-type Leases		33,834		0		33,834	0
Gain (Loss) on Extinguishment of Debt	$ 25,900	0		0		(25,915)	0
Gain (loss) on sale of assets and other		468		111		974	(199)
Total other income (expense)		25,492		(16,785)		(13,752)	(33,489)
Income before income taxes		77,993		47,129		104,942	100,959
State income tax benefit (expense)		(39)		30		(76)	(6)
Net Income		77,954	$ 26,912	47,159	$ 53,794	104,866	100,953
Allocation of net income attributable to noncontrolling interests		(1,484)		(1,469)		(3,535)	(4,081)
Net income attributable to the partners		$ 76,470		$ 45,690		$ 101,331	$ 96,872
Limited partners’ per unit interest in earnings—basic and diluted (in dollars per share)		$ 0.73		$ 0.43		$ 0.96	$ 0.92
Weighted average limited partners’ units outstanding (in shares)		105,440		105,440		105,440	105,440
Affiliates
Revenues:
Revenues		$ 95,563		$ 102,369		$ 196,991	$ 205,728
Third parties
Revenues:
Revenues		$ 19,244		$ 28,382		$ 45,670	$ 59,520