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The maximum total debt to EBITDAX ratio required by the debt agreement.

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Represents the debt instrument libor floor.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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Nominal or face amount used to calculate payments on the derivative liability.

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Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects.

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The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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No definition available.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in remainder of current fiscal year.

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Note 3 - Long-term Debt (Details Textual) - USD ($) $ in Thousands		3 Months Ended		12 Months Ended
	Feb. 08, 2021	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021	Dec. 31, 2020
Interest Rate Swap [Member]
Derivative Liability, Notional Amount		$ 6,000
Interest Rate Swap [Member] \| Interest Expense [Member]
Gain (Loss) on Derivative Instruments, Net, Pretax, Total		$ 100	$ 0
Credit Agreement [Member]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.15%
Fixed Charge Coverage Ratio		1.25
Debt Instrument, Covenant, Maximum Total Debt to EBITDAX Ratio		5.0
Credit Agreement [Member] \| Term Loan 2 [Member]
Debt Instrument, Interest Rate, Effective Percentage		1.25%
Long-Term Debt, Maturity, Remainder of Fiscal Year		$ 6,900
Long-Term Debt, Maturity, Year One		9,300
Long-Term Debt, Maturity, Year Five		$ 3,100
Credit Agreement [Member] \| Term Loan [Member]
Debt Instrument, Interest Rate, Effective Percentage		1.08%
Long-Term Debt, Maturity, Remainder of Fiscal Year		$ 4,500
Long-Term Debt, Maturity, Year One		6,000
Long-Term Debt, Maturity, Year Four		$ 3,000
Credit Agreement [Member] \| London Interbank Offered Rate (LIBOR) [Member] \| Term Loan 2 [Member] \| Minimum [Member]
Debt Instrument, Basis Spread on Variable Rate				0.85%
Credit Agreement [Member] \| London Interbank Offered Rate (LIBOR) [Member] \| Term Loan 2 [Member] \| Maximum [Member]
Debt Instrument, Basis Spread on Variable Rate				1.65%
Credit Agreement [Member] \| London Interbank Offered Rate (LIBOR) [Member] \| Term Loan [Member] \| Minimum [Member]
Debt Instrument, Basis Spread on Variable Rate				0.68%
Credit Agreement [Member] \| London Interbank Offered Rate (LIBOR) [Member] \| Term Loan [Member] \| Maximum [Member]
Debt Instrument, Basis Spread on Variable Rate				1.50%
Credit Agreement [Member] \| Revolving Credit Facility [Member]
Debt Instrument, Interest Rate, Effective Percentage		1.08%
Credit Agreement [Member] \| Revolving Credit Facility [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, LIBOR Floor	0.25%
Credit Agreement [Member] \| Revolving Credit Facility [Member] \| Truist Bank [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 125,000				$ 75,000
Credit Agreement [Member] \| Revolving Credit Facility [Member] \| Truist Bank [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, LIBOR Floor	0.25%				0.00%
Credit Agreement [Member] \| Letter of Credit [Member]
Letters of Credit Outstanding, Amount		$ 0