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

No definition available.

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- Definition

The minimum amount of cash threshold for debt prepayments to become due required by the debt agreement.

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No definition available.

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- Definition

The minimum current ratio required by the debt agreement.

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No definition available.

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Amount of accumulated amortization of debt issuance costs.

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- Definition

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

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No definition available.

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

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Face (par) amount of debt instrument at time of issuance.

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- Definition

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

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Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

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Amount of the fee for available but unused credit capacity under the credit facility.

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Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

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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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No definition available.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Note 7 - Long-term Debt (Details Textual) - USD ($)		1 Months Ended	9 Months Ended	12 Months Ended
Note 7 - Long-term Debt (Details Textual) - USD ($)	Oct. 01, 2021	Dec. 31, 2020	Sep. 30, 2021	Dec. 31, 2020	Jun. 30, 2021
Debt Issuance Costs, Gross			$ 2,200,000
Accumulated Amortization, Debt Issuance Costs			263,000
Long-term Debt, Total		$ 0	93,102,000	$ 0
Revolving Credit Facility [Member]
Debt Issuance Costs, Gross					$ 2,200,000
Long-term Debt, Gross		0	95,000,000	0
Revolving Credit Facility [Member] \| Fifth Third Bank, National Association [Member]
Line of Credit Facility, Maximum Borrowing Capacity		40,000,000.0		40,000,000.0	125,000,000.0
Line of Credit Facility, Commitment Fee Amount	$ 195,000,000.0	20,000,000.0	125,000,000.0
Line of Credit Facility, Current Borrowing Capacity		20,000,000.0	125,000,000.0	20,000,000.0	$ 125,000,000.0
Debt Instrument, Face Amount			500,000,000.0
Long-term Debt, Gross		0	$ 95,000,000.0	$ 0
Debt Instrument, Interest Rate, Effective Percentage			4.00%
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage			0.50%
Debt Instrument, Covenant, Minimum Cash Threshold for Prepayment to be Due			$ 20,000,000.0
Revolving Credit Facility [Member] \| Fifth Third Bank, National Association [Member] \| Maximum [Member]
Debt Instrument, Covenant, Maximum Total Debt to EBITDAX Ratio			3.00
Revolving Credit Facility [Member] \| Fifth Third Bank, National Association [Member] \| Minimum [Member]
Debt Instrument, Covenant, Minimum Current Ratio			1.00
Revolving Credit Facility [Member] \| Fifth Third Bank, National Association [Member] \| Fed Funds Effective Rate Overnight Index Swap Rate [Member]
Debt Instrument, Basis Spread on Variable Rate				0.50%
Revolving Credit Facility [Member] \| Fifth Third Bank, National Association [Member] \| Subsequent Event [Member]
Line of Credit Facility, Maximum Borrowing Capacity	195,000,000.0
Line of Credit Facility, Current Borrowing Capacity	$ 195,000,000.0
Debt Instrument, Interest Rate, Effective Percentage	3.50%
Letter of Credit [Member] \| Fifth Third Bank, National Association [Member] \| London Interbank Offered Rate (LIBOR), Applicable Margin [Member]
Debt Instrument, Basis Spread on Variable Rate			0.125%
Other Noncurrent Assets [Member]
Debt Issuance Costs, Gross		401,000		$ 401,000
Accumulated Amortization, Debt Issuance Costs		$ 4,000		$ 4,000