CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities:
Net income (loss)	$ 157,749	$ (109,636)
Adjustments to reconcile net income (loss) to net cash provided by operating activities
Depreciation, depletion, amortization and accretion expense	105,960	74,194
Write-down of oil and natural gas properties and other well inventory	190
Amortization of deferred financing costs and original issue discount	1,466	1,188
Equity based compensation, net of amounts capitalized	1,627	1,259
Price risk management activities expense (income)	(243,217)	109,579
Net cash received (paid) on settled derivative instruments	36,460	(3,019)
Settlement of asset retirement obligations	(6,302)	(3,945)
Changes in operating assets and liabilities:
Accounts receivable	(11,578)	2,305
Other current assets	18,318	11,370
Accounts payable	(18,547)	(8,284)
Other current liabilities	13,337	(25,933)
Other non-current assets and liabilities, net	54,769	(7,956)
Net cash provided by operating activities	110,232	41,122
Cash flows from investing activities:
Exploration, development and other capital expenditures	(83,588)	(102,396)
Cash paid for acquisitions, net of cash acquired	(293,095)	(32,916)
Net cash provided by (used in) investing activities	(376,683)	(135,312)
Cash flows from financing activities:
Redemption of Senior Notes and other long-term debt		(109)
Proceeds from Bank Credit Facility	300,000	35,000
Repayment of Bank Credit Facility		(25,000)
Deferred financing costs	(1,285)
Other deferred payments	(7,575)	(6,575)
Payments of finance lease	(4,049)	(3,311)
Employee stock transactions	(710)
Net cash provided by (used in) financing activities	286,381	5
Net increase (decrease) in cash, cash equivalents and restricted cash	19,930	(94,185)
Cash, cash equivalents and restricted cash:
Balance, beginning of period	87,022	141,162
Balance, end of period	106,952	46,977
Supplemental Non-Cash Transactions:
Capital expenditures included in accounts payable and accrued liabilities	66,712	134,722
Supplemental Cash Flow Information:
Interest paid, net of amounts capitalized	$ 4,906	$ 4,614