UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$ 73,964	$ (65,215)
Adjustments to reconcile net income (loss) to net cash provided by operating activities -
Depreciation, depletion and amortization	143,179	133,827
Gain (Loss) on Disposition of Assets	(40,000)	0
Amortization and write-off of debt issuance costs, premium and discount	4,652	6,965
Payments received under previously owned direct financing leases	0	35,000
Equity in earnings of investments in equity investees	(27,016)	(34,882)
Cash distributions of earnings of equity investees	27,378	34,325
Non-cash effect of long-term incentive compensation plans	6,644	2,884
Deferred and other tax liabilities	600	402
Unrealized losses (gains) on derivative transactions	(10,284)	32,377
Cancellation of debt income	(4,737)	0
Other, net	10,137	11,229
Net changes in components of operating assets and liabilities (Note 14)	(26,230)	31,272
Net cash provided by operating activities	158,287	188,184
CASH FLOWS FROM INVESTING ACTIVITIES:
Payments to acquire fixed and intangible assets	(181,441)	(111,412)
Cash distributions received from equity investees - return of investment	10,372	17,015
Investments in equity investees	(2,976)	0
Proceeds from asset sales	40,131	32
Net cash used in investing activities	(133,914)	(94,365)
CASH FLOWS FROM FINANCING ACTIVITIES:
Borrowings on senior secured credit facility	403,000	366,600
Repayments on senior secured credit facility	(417,400)	(592,100)
Proceeds from Issuance of Senior Long-term Debt	408,000	0
Redemption of preferred units (Note 10)	288,629	0
Proceeds from issuance of senior unsecured notes (Note 9)	0	259,375
Net proceeds from issuance of preferred units (Note 10)	0	53,018
Repayment of senior unsecured notes (Note 9)	(40,837)	(80,859)
Debt issuance costs	(5,770)	(11,365)
Contributions from noncontrolling interests	8,799	385
Distributions to noncontrolling interests	(18,332)	0
Distributions to common unitholders	(36,774)	(36,774)
Distributions to Class A Convertible Preferred unitholders	(37,368)	(37,368)
Other, net	4,462	4,539
Net cash used in financing activities	(20,849)	(74,549)
Net increase in cash, cash equivalents and restricted cash	3,524	19,270
Cash, cash equivalents and restricted cash at beginning of period	24,992	27,018
Cash, cash equivalents and restricted cash at end of period	$ 28,516	$ 46,288