CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 136,941	$ 79,894
Adjustments to reconcile net income to net cash provided by operating activities
Provision for doubtful accounts	0	(2,329)
Depreciation, depletion, and amortization	13,038	11,272
Debt issuance costs amortization	0	57
Write off of debt issuance costs	0	174
(Gain) loss on derivative contracts	(3,194)	4,129
Realized settlement losses on derivative contracts	867	0
Gain on sale of assets	0	(18,952)
Stock-based compensation	1,131	1,036
Other	115	107
Changes in operating assets and liabilities	(12,534)	(9,073)
Net cash provided by operating activities	134,630	66,315
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures for property, plant and equipment	(31,129)	(8,615)
Acquisition of assets	(1,431)	(3,545)
Purchase of other property and equipment	(49)	(59)
Proceeds from sale of assets	448	38,086
Net cash (used in) provided by investing activities	(32,161)	25,867
CASH FLOWS FROM FINANCING ACTIVITIES
Repayments of borrowings	0	(20,000)
Reduction of financing lease liability	(295)	(493)
Debt issuance costs	0	(75)
Proceeds from exercise of stock options	77	21
Proceeds from exercise of warrants	5	0
Tax withholdings paid in exchange for shares withheld on employee vested stock awards	(1,177)	(899)
Net cash used in financing activities	(1,390)	(21,446)
NET INCREASE IN CASH, CASH EQUIVALENTS and RESTRICTED CASH	101,079	70,736
CASH, CASH EQUIVALENTS and RESTRICTED CASH, beginning of year	139,524	28,266
CASH, CASH EQUIVALENTS and RESTRICTED CASH, end of period	240,603	99,002
Supplemental Disclosure of Cash Flow Information
Cash paid for interest, net of amounts capitalized	(198)
Cash paid for interest, net of amounts capitalized		(168)
Supplemental Disclosure of Noncash Investing and Financing Activities
Purchase of Plant, Property and Equipment in accounts payables and accrued expenses	8,153	2,169
Right-of-use assets obtained in exchange for financing lease obligations	$ 538	$ 960