Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended				6 Months Ended		12 Months Ended
	Jun. 30, 2025	Mar. 31, 2025	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 26,176,000	$ 36,335,000	$ 29,717,000	$ 6,438,000	$ 62,511,000	$ 36,155,000
Adjustments to reconcile net income to net cash provided by operations:
Provision for deferred income taxes					17,602,000	15,970,000
(Gain) loss on derivative instruments, net	(26,446,000)		2,702,000		(18,519,000)	55,745,000
Cash received (paid) on settlement of derivative instruments	7,412,000		(5,308,000)		4,341,000	(10,456,000)
Amortization of debt issuance costs					4,091,000	4,119,000
Amortization of discounts on long-term debt					4,879,000	4,906,000
Stock-based compensation expense					265,000	7,573,000
Accretion expense					500,000	481,000
Depletion, depreciation and amortization	101,226,000		127,693,000		210,551,000	258,543,000
Exploration and abandonment expense					859,000	229,000
Changes in operating assets and liabilities:
Accounts receivable					13,817,000	7,038,000
Prepaid expenses, inventory and other assets					4,977,000	(2,900,000)
Accounts payable, accrued liabilities and other current liabilities					(7,609,000)	(3,633,000)
Net cash provided by operating activities					298,265,000	373,770,000
CASH FLOWS FROM INVESTING ACTIVITIES:
Additions to crude oil and natural gas properties					(306,157,000)	(311,897,000)
Changes in working capital associated with crude oil and natural gas property additions					(12,907,000)	(5,226,000)
Acquisitions of crude oil and natural gas properties					(3,584,000)	(7,415,000)
Proceeds from sales of properties					570,000	48,000
Other property additions					0	(122,000)
Net cash used in investing activities					(322,078,000)	(324,612,000)
CASH FLOWS FROM FINANCING ACTIVITIES:
Dividends paid					(9,922,000)	(10,086,000)
Dividend equivalents paid					(1,062,000)	(1,068,000)
Proceeds from exercise of warrants					1,000	1,000
Repurchased shares under buyback program					0	(14,551,000)
Debt issuance costs					0	(58,000)
Net cash used in financing activities					(40,983,000)	(85,762,000)
Net decrease in cash and cash equivalents					(64,796,000)	(36,604,000)
Cash and cash equivalents, beginning of period		$ 86,649,000		$ 194,515,000	86,649,000	194,515,000	$ 194,515,000
Cash and cash equivalents, end of period	$ 21,853,000		$ 157,911,000		21,853,000	157,911,000	$ 86,649,000
Supplemental cash flow information:
Cash paid for interest					64,430,000	78,173,000
Cash paid for income taxes					0	0
Supplemental disclosure of non-cash transactions:
Additions to asset retirement obligations					1,153,000	256,000
Senior Credit Facility Agreement [Member]
CASH FLOWS FROM FINANCING ACTIVITIES:
Borrowings under Senior Credit Facility Agreement					30,000,000	0
Term Loan Credit Agreement [Member]
CASH FLOWS FROM FINANCING ACTIVITIES:
Repayments under Term Loan Credit					$ (60,000,000)	$ (60,000,000)