Summary of Significant Accounting Policies (Details Textual) $ in Thousands	3 Months Ended
	Mar. 31, 2023 USD ($) MMBTU bbl $ / MMBTU $ / Boe shares	Mar. 31, 2022 USD ($) shares	Apr. 28, 2023 MMBTU bbl $ / MMBTU $ / Boe	Dec. 31, 2022 USD ($)
Summary of Significant Accounting Policies
Proved oil and gas properties	$ 2,614,332			$ 2,506,853
Unproved oil and gas properties	18,196			16,272
Furniture, fixtures, and other equipment	6,188			6,098
Less - Accumulated depreciation, depletion, and amortization	(1,048,062)			(1,004,044)
Net Furniture, Fixtures and other equipment	$ 1,590,654			1,525,179
Discount rate for estimated future net revenues from proved properties	10.00%
Write-down of oil and gas properties	$ 0	$ 0
Allowance for doubtful accounts receivable, current	100			100
Accounts receivable, gross	44,300			70,900
Accounts receivable related to joint interest owners	1,200			5,600
Severance tax receivable	5,700			4,300
Other receivables	$ 12,700			8,900
Percentage of working interest in wells	100.00%
Total amount of supervision fees charged to wells	$ 2,700	$ 1,600
Effective Income Tax Rate Reconciliation, Percent	22.00%	(4.00%)
Oil and gas sales	$ 139,954	$ 129,656
Trade accounts payable	20,254			23,660
Accrued operating expenses	13,735			10,572
Accrued payroll costs	1,510			4,814
Asset retirement obligation - current portion	1,598			1,284
Accrued non-income based taxes	5,836			4,849
Accrued corporate and legal fees	306			388
WTI contingency payouts - current portion	2,023			1,600
Payables for Settled Derivatives	984			6,026
Other payables	5,353			7,007
Accounts payable and accrued liabilities	$ 51,599			$ 60,200
Purchase of treasury stock (shares) | shares	126,240	96,012
Treasury Shares Pursuant to Purchase Price Adjustment (shares) | shares		41,191
Capitalized Costs Oil and Gas Producing Activities	$ 1,400	$ 1,000
Oil sales [Member]
Summary of Significant Accounting Policies
Oil and gas sales	74,655	39,741
Natural gas sales [Member]
Summary of Significant Accounting Policies
Oil and gas sales	52,922	77,372
NGL sales [Member]
Summary of Significant Accounting Policies
Oil and gas sales	$ 12,377	$ 12,543
Collar Contracts [Member] | Third Quarter 2023 | Oil Derivative Swaps
Summary of Significant Accounting Policies
Oil and Gas Production Hedged Volumes | MMBTU	72,847
Derivative, Average Floor Price | $ / MMBTU	59.27
Derivative, Average Cap Price | $ / MMBTU	66.26
Collar Contracts [Member] | Third Quarter 2023 | Oil Derivative Swaps | Subsequent Event [Member]
Summary of Significant Accounting Policies
Oil and Gas Production Hedged Volumes | MMBTU			46,000
Derivative, Average Floor Price | $ / MMBTU			72.00
Derivative, Average Cap Price | $ / MMBTU			82.83
Collar Contracts [Member] | Third Quarter 2023 | Natural Gas Derivative Swaps
Summary of Significant Accounting Policies
Oil and Gas Production Hedged Volumes | MMBTU	11,896,400
Derivative, Average Floor Price | $ / MMBTU	3.43
Derivative, Average Cap Price | $ / MMBTU	4.23
Collar Contracts [Member] | Fourth Quarter 2023 | Oil Derivative Swaps
Summary of Significant Accounting Policies
Oil and Gas Production Hedged Volumes | MMBTU	72,242
Derivative, Average Floor Price | $ / MMBTU	58.54
Derivative, Average Cap Price | $ / MMBTU	65.13
Collar Contracts [Member] | Fourth Quarter 2023 | Oil Derivative Swaps | Subsequent Event [Member]
Summary of Significant Accounting Policies
Oil and Gas Production Hedged Volumes | MMBTU			46,000
Derivative, Average Floor Price | $ / MMBTU			71.00
Derivative, Average Cap Price | $ / MMBTU			80.65
Collar Contracts [Member] | Fourth Quarter 2023 | Natural Gas Derivative Swaps
Summary of Significant Accounting Policies
Oil and Gas Production Hedged Volumes | MMBTU	12,445,000
Derivative, Average Floor Price | $ / MMBTU	3.87
Derivative, Average Cap Price | $ / MMBTU	4.80
Collar Contracts [Member] | Third Quarter 2024 | Natural Gas Derivative Swaps
Summary of Significant Accounting Policies
Oil and Gas Production Hedged Volumes | MMBTU	2,958,000
Derivative, Average Floor Price | $ / MMBTU	4.00
Derivative, Average Cap Price | $ / MMBTU	5.10
Collar Contracts [Member] | First Quarter 2025 | Oil Derivative Swaps
Summary of Significant Accounting Policies
Oil and Gas Production Hedged Volumes | MMBTU	45,000
Derivative, Average Floor Price | $ / MMBTU	62.00
Derivative, Average Cap Price | $ / MMBTU	69.40
Collar Contracts [Member] | First Quarter 2025 | Oil Derivative Swaps | Subsequent Event [Member]
Summary of Significant Accounting Policies
Oil and Gas Production Hedged Volumes | MMBTU			193,500
Derivative, Average Floor Price | $ / MMBTU			64.47
Derivative, Average Cap Price | $ / MMBTU			75.84
Collar Contracts [Member] | First Quarter 2025 | Natural Gas Derivative Swaps
Summary of Significant Accounting Policies
Oil and Gas Production Hedged Volumes | MMBTU	1,800,000
Derivative, Average Floor Price | $ / MMBTU	4.00
Derivative, Average Cap Price | $ / MMBTU	5.41
Collar Contracts [Member] | First Quarter 2025 | Natural Gas Derivative Swaps | Subsequent Event [Member]
Summary of Significant Accounting Policies
Oil and Gas Production Hedged Volumes | MMBTU			3,330,000
Derivative, Average Floor Price | $ / MMBTU			4.00
Derivative, Average Cap Price | $ / MMBTU			5.27
Swap [Member] | Third Quarter 2023 | Oil Derivative Swaps
Summary of Significant Accounting Policies
Oil and Gas Production Hedged Volumes | bbl	533,980
Derivative, Swap Type, Fixed Price | $ / Boe	77.36
Swap [Member] | Third Quarter 2023 | Natural Gas Derivative Swaps
Summary of Significant Accounting Policies
Oil and Gas Production Hedged Volumes | MMBTU	4,816,000
Derivative, Swap Type, Fixed Price | $ / MMBTU	4.57
Swap [Member] | Fourth Quarter 2023 | Oil Derivative Swaps
Summary of Significant Accounting Policies
Oil and Gas Production Hedged Volumes | bbl	569,300
Derivative, Swap Type, Fixed Price | $ / Boe	78.26
Swap [Member] | Fourth Quarter 2023 | Natural Gas Derivative Swaps
Summary of Significant Accounting Policies
Oil and Gas Production Hedged Volumes | MMBTU	3,887,000
Derivative, Swap Type, Fixed Price | $ / MMBTU	4.71
Swap [Member] | Third Quarter 2024 | Oil Derivative Swaps
Summary of Significant Accounting Policies
Oil and Gas Production Hedged Volumes | bbl	272,700
Derivative, Swap Type, Fixed Price | $ / Boe	76.91
Swap [Member] | Third Quarter 2024 | Oil Derivative Swaps | Subsequent Event [Member]
Summary of Significant Accounting Policies
Oil and Gas Production Hedged Volumes | bbl			920
Derivative, Swap Type, Fixed Price | $ / Boe			71.60
Swap [Member] | Third Quarter 2024 | Natural Gas Derivative Swaps
Summary of Significant Accounting Policies
Oil and Gas Production Hedged Volumes | MMBTU	7,820,000
Derivative, Swap Type, Fixed Price | $ / MMBTU	4.03
Swap [Member] | First Quarter 2025 | Natural Gas Derivative Swaps
Summary of Significant Accounting Policies
Oil and Gas Production Hedged Volumes | MMBTU	900,000
Derivative, Swap Type, Fixed Price | $ / MMBTU	5.01
Minimum [Member]
Summary of Significant Accounting Policies
Estimated useful lives of property	2 years
Maximum [Member]
Summary of Significant Accounting Policies
Estimated useful lives of property	20 years