Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Cash flows from operating activities:
Net (loss) income	$ (156,906)	$ 121,585
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Provision for (benefit from) income taxes	142,466	(34,536)
Depletion	47,424	32,711
Loss on derivative instruments, net	42,385	0
Net cash payments on derivatives	(2,554)	0
Gain on extinguishment of debt	(14)	0
Loss (gain) on revaluation of investment	6,677	(3,642)
Amortization of debt issuance costs	1,152	441
Non-cash unit-based compensation	670	877
Changes in operating assets and liabilities:
Royalty income receivable, net	25,971	(7,996)
Royalty income receivable—related party	9,659	(5,549)
Accounts payable and accrued liabilities	(832)	(2,238)
Accounts payable—related party	(150)	0
Income tax payable	0	108
Other current assets	(85)	(41)
Net cash provided by operating activities	115,863	101,720
Cash flows from investing activities:
Acquisitions of oil and natural gas interests	(65,272)	(125,231)
Funds held in escrow	0	(13,215)
Net cash used in investing activities	(65,272)	(138,446)
Cash flows from financing activities:
Proceeds from borrowings under credit facility	92,000	171,000
Repayment on credit facility	(35,000)	(369,500)
Debt issuance costs	(44)	(258)
Repayment of senior notes	(13,787)	0
Proceeds from public offerings	0	340,860
Public offering costs	0	(221)
Units purchased for tax withholding	(383)	(353)
Distributions to General Partner	(40)	(40)
Distributions to public	(36,928)	(49,491)
Distributions to Diamondback	(50,348)	(65,143)
Net cash (used in) provided by financing activities	(44,530)	26,854
Net increase (decrease) in cash	6,061	(9,872)
Cash and cash equivalents at beginning of period	3,602	22,676
Cash and cash equivalents at end of period	9,663	12,804
Supplemental disclosure of cash flow information:
Interest paid	$ 17,918	$ 2,382