Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Net Income (loss)	$ 151,363	$ 27,492
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation, depletion and amortization	75,322	64,467
Loss on derivatives, net	83,284	29,596
Cash paid for commodity derivative settlements, net	(2,638)	(14,365)
Loss on extinguishment of debt	0	8,676
Stock-based compensation expense, net	4,115	3,518
Deferred income tax (benefit) expense	(179,218)	193
Non-cash interest expense, net	603	662
Other, net	1,364	(2,689)
Changes in components of working capital and other assets and liabilities-
Accounts receivable	(4,309)	10,738
Accounts payable	(14,385)	15,526
Accrued liabilities	10,568	(4,317)
Other assets and liabilities, net	(966)	(773)
Net cash provided by operating activities	125,103	138,724
Cash Flows From Investing Activities
Capital expenditures	(171,042)	(234,685)
Acquisition of oil and gas properties	8,222	0
Proceeds from divestitures of oil and gas properties, net	3,107	342,359
Other, net	(880)	(87)
Net cash provided by (used in) investing activities	(160,593)	107,587
Cash Flows From Financing Activities
Redemptions of senior notes	0	(326,010)
Redemption of preferred stock	0	(50,030)
Borrowings under credit agreement	470,632	694,260
Repayments of borrowings under credit agreement	(389,920)	(563,860)
Payments of credit facility amendment fees	(613)	(150)
Payments of dividends on preferred stock	(4,360)	(4,863)
Cash paid for settlements of contingent consideration arrangements, net	(40,000)	0
Other, net	(358)	(313)
Net cash provided by (used in) financing activities	35,381	(250,966)
Net Decrease in Cash and Cash Equivalents	(109)	(4,655)
Cash and Cash Equivalents, Beginning of Period	2,282	9,540
Cash and Cash Equivalents, End of Period	$ 2,173	$ 4,885