CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Operating Activities:
Net Income (Loss)	$ (87,025)	$ (101,203)
Adjustments to reconcile to net cash provided by operations:
Depreciation, depletion and amortization	230,170	152,106
Deferred income taxes	(25,271)	0
Impairment, dry hole costs and abandonment expense	2,487	609
Commodity derivative (gain) loss	54,600	128,166
Settlements of commodity derivatives	7,731	(42,628)
Stock compensation and other non-cash charges	9,501	5,813
Amortization of deferred financing costs	1,917	1,729
(Gain) loss on extinguishment of debt	0	257
(Gain) loss on sale of properties	2,901	1,046
Change in operating assets and liabilities:
Accounts receivable	13,488	(8,789)
Prepayments and other assets	(1,109)	(1,421)
Accounts payable, accrued and other liabilities	3,867	(25,287)
Amounts payable to oil and gas property owners	(16,784)	33,804
Production taxes payable	(1,079)	15,983
Net cash provided by (used in) operating activities	195,394	160,185
Investing Activities:
Additions to oil and gas properties, including acquisitions	(375,976)	(322,614)
Additions of furniture, equipment and other	(3,958)	(616)
Repayment of debt associated with merger, net of cash acquired	0	(53,357)
Proceeds from sale of properties	1,334	(221)
Other investing activities	(1,400)	232
Net cash provided by (used in) investing activities	(380,000)	(376,576)
Financing Activities:
Proceeds from debt	200,000	0
Principal payments on debt	(26,859)	(350)
Other financing activities	(1,741)	(4,745)
Net cash provided by (used in) financing activities	171,400	(5,095)
Increase (Decrease) in Cash and Cash Equivalents	(13,206)	(221,486)
Beginning Cash and Cash Equivalents	32,774	314,466
Ending Cash and Cash Equivalents	$ 19,568	$ 92,980