Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023		Mar. 31, 2022
Cash flows from operating activities
Net income	$ 79,275	[1]	$ 63,899	[2]
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, depletion and amortization	4,083		3,868
Distributions from unconsolidated investment	10,780		13,230
Equity earnings from unconsolidated investment	(19,254)		(14,837)
Gain on asset sales and disposals	(96)		0
Asset impairments	0		19
Bad debt expense	(610)		1,028
Unit-based compensation expense	2,491		1,448
Amortization of debt issuance costs and other	25		375
Change in operating assets and liabilities:
Accounts receivable	7,061		(7,579)
Accounts payable	(541)		(60)
Accrued liabilities	(8,805)		(7,156)
Accrued interest	263		7,250
Deferred revenue	(154)		(7,316)
Other items, net	(1,618)		(1,838)
Net cash provided by operating activities	72,900		52,331
Cash flows from investing activities
Proceeds from asset sales and disposals	101		0
Return of long-term contract receivable	598		0
Capital expenditures	(2)		0
Net cash provided by investing activities	697		0
Cash flows from financing activities
Debt borrowings	94,200		0
Debt repayments	(89,696)		(16,697)
Redemption of preferred units	(48,085)		0
Redemption of preferred units paid-in-kind	0		(19,579)
Other items, net	(3,052)		(2,813)
Net cash used in financing activities	(95,033)		(52,261)
Net increase (decrease) in cash and cash equivalents	(21,436)		70
Cash and cash equivalents at beginning of period	39,091		135,520
Cash and cash equivalents at end of period	17,655		135,590
Supplemental cash flow information:
Cash paid for interest	2,474		1,644
Common Unitholders And General Partner [Member]
Cash flows from financing activities
Distributions to unitholders	(40,900)		(5,672)
Preferred Partner [Member]
Cash flows from financing activities
Distributions to unitholders	$ (7,500)		$ (7,500)

[1] Net income includes $6.7 million of income attributable to preferred unitholders that accumulated during the period, of which $6.5 million is allocated to the common unitholders and $0.1 million is allocated to the general partner.

[2] Net income includes $7.5 million of income attributable to preferred unitholders that accumulated during the period, of which $7.4 million is allocated to the common unitholders and $0.2 million is allocated to the general partner.