CONSOLIDATED STATEMENTS OF CASH FLOWS (in thousands) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities:
Net income (loss)		$ 36,229	$ (764,614)	$ (187,001)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depletion, depreciation, amortization, and asset retirement obligation liability accretion		774,386	784,987	823,798
Impairment		35,000	1,016,013	33,842
Stock-based compensation expense		18,819	14,999	24,318
Net derivative (gain) loss		901,659	(161,576)	97,539
Derivative settlement gain (loss)		(748,958)	351,261	39,222
Amortization of debt discount and deferred financing costs		17,275	17,704	15,474
Net (gain) loss on extinguishment of debt		2,139	(280,081)	0
Deferred income taxes		9,565	(192,540)	(41,835)
Other, net		(3,753)	(6,800)	1,358
Changes in working capital:
Accounts receivable		(101,047)	29,100	(39,556)
Prepaid expenses and other		220	5,873	6,130
Accounts payable and accrued expenses		218,238	(23,382)	50,278
Net cash provided by operating activities		1,159,772	790,944	823,567
Cash flows from investing activities:
Net proceeds from the sale of oil and gas properties		10,927	92	13,059
Capital expenditures		(674,841)	(547,785)	(1,023,769)
Acquisition of proved and unproved oil and gas properties		(3,321)	(7,873)	(2,581)
Net cash used in investing activities		(667,235)	(555,566)	(1,013,291)
Cash flows from financing activities:
Proceeds from revolving credit facility		1,832,500	1,447,000	1,589,000
Repayment of revolving credit facility		(1,925,500)	(1,476,500)	(1,466,500)
Net proceeds from Senior Notes		392,771	0	0
Cash paid for maturities and early repayment of Senior Debt		450,776	189,998	0
Debt issuance costs related to 10.0% Senior Secured Notes due 2025		0	(13,069)	0
Net proceeds from sale of common stock		2,639	1,464	3,209
Dividends paid		(2,393)	(2,276)	(11,254)
Other, net		(9,072)	(1,999)	(2,686)
Net cash used in financing activities		(159,831)	(235,378)	111,769
Net change in cash, cash equivalents, and restricted cash		332,706	0	(77,955)
Cash, cash equivalents, and restricted cash at beginning of period		10	10	77,965
Cash, cash equivalents, and restricted cash at end of period		332,716	10	10
Supplemental Cash Flow Information - Operating Activities:
Cash paid for interest, net of capitalized interest		(136,606)	(140,493)	(141,902)
Net cash (paid) refunded for income taxes		(864)	6,664	6,109
Supplemental Cash Flow Information - Investing Activities:
Decrease in capital expenditure accruals and other		(10,826)	(7,965)	(24,289)
Non-cash investing and financing activities
Non-cash investing and financing activities (1)(2)	[1],[2]

[1] (1)    Please refer to Note 16 – Acquisitions, Divestitures, and Assets Held for Sale for discussion of the carrying value of properties exchanged during the years ended December 31, 2021, 2020, and 2019.

[2] (2)    Please refer to Note 5 – Long-Term Debt for discussion of the debt transactions completed during the years ended December 31, 2021, and 2020.