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Note 12 - Equity Plans (Details Textual) - USD ($)	1 Months Ended	12 Months Ended
	Jan. 31, 2022	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
C-Suite Long-Term Incentive Plan [Member]
Minimum Return on Assets for Performance-Based Incentives		5.00%
Performance-Based Award Cap, Percentage of Grant		100.00%	150.00%
Chief Executive Officer [Member] | C-Suite Long-Term Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Maximum Amount Per Employee		$ 1,100,000	$ 1,100,000
President and Chief Operating Officer [Member] | C-Suite Long-Term Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Maximum Amount Per Employee		800,000	600,000
Chief Financial Officer [Member] | C-Suite Long-Term Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Maximum Amount Per Employee		500,000	$ 300,000
Restricted Stock [Member] | Non-Employee Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Value		$ 110,000
Restricted Stock [Member] | Non-Employee Director [Member] | Share-Based Payment Arrangement, Tranche One [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage		33.33%
Restricted Stock Units (RSUs) [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)		34,486	49,768	55,558
Share-Based Payment Arrangement, Expense		$ 1,998,000	$ 1,817,000	$ 1,297,000
Restricted Stock Units (RSUs) [Member] | C-Suite Long-Term Incentive Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)		17,243	20,000	20,000
Restricted Stock Units (RSUs) [Member] | Performance-Based Cash Awards [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Nonvested		$ 3,200,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Remaining Contractual Terms (Year)		1 year 8 months 12 days
Restricted Stock Units (RSUs) [Member] | Non-Employee Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Value			$ 80,000
Restricted Stock Units (RSUs) [Member] | Non-Employee Director [Member] | Share-Based Payment Arrangement, Tranche One [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)			1 year
Performance Shares [Member] | C-Suite Long-Term Incentive Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)		17,243	20,000	20,000
Service Based Cash Awards [Member] | C-Suite Long-Term Incentive Plan [Member]
Deferred Compensation Arrangement with Individual, Cash Award Granted, Amount		$ 37,400	$ 300,000	$ 500,000
Performance-Based Cash Awards [Member] | C-Suite Long-Term Incentive Plan [Member]
Deferred Compensation Arrangement with Individual, Cash Award Granted, Amount		37,400	$ 300,000	$ 500,000
Performance-Based Cash Awards [Member] | Performance-Based Cash Awards [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Nonvested		$ 2,400,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Remaining Contractual Terms (Year)		1 year 6 months
Phantom Stock Plan [Member] | Phantom Stock Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Remaining Contractual Terms (Year)		1 year 7 months 6 days	1 year 6 months
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)	3 years
Share-Based Payment Arrangement, Expense		$ 100,000	$ 1,500,000
Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount		800,000	1,600,000
Deferred Compensation Share-Based Arrangements, Liability, Current and Noncurrent		1,600,000	$ 1,800,000
Phantom Stock Plan [Member] | Phantom Stock Plan [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Annual Grant Value		$ 150,000
Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares)		1,400,000

X

- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.F)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479830/718-10-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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- Definition

Amount of commitment made to pay deferred cash remuneration.

+ References

No definition available.

+ Details

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X

- Definition

Aggregate carrying value as of the balance sheet date of the liabilities for stock option plans and other equity-based compensation arrangements.

+ References

No definition available.

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- Definition

Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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- Definition

Amount of cost to be recognized for option under share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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X

- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
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X

- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(01)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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X

- Definition

Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 718
-SubTopic 10
-Subparagraph (e)(1)
-Name Accounting Standards Codification
-Paragraph 2
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-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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X

- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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X

- Definition

Percentage of vesting of award under share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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- Definition

Intrinsic value of nonvested award under share-based payment arrangement. Excludes share and unit options.

+ References

No definition available.

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X

- Definition

Represents the percentage of return on assets needed for performance-based shares to be awarded.

+ References

No definition available.

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- Definition

Represents the maximum percentage of grant value that performance-based awards can reach.

+ References

No definition available.

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X

- Definition

Represents the value of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

No definition available.

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X

- Definition

The maximum awards to each employee under the plan per period.

+ References

No definition available.

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- Definition

Value of non-option equity instruments that can be granted annually.

+ References

No definition available.

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