Note 3 - Shareholder's Equity (Details Textual) - USD ($) Pure in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Stock Repurchased and Retired During Period, Shares	129,800	180,000	532,313	695,000
Payments for Repurchase of Common Stock	$ 624,000	$ 1,030,000	$ 2,632,000	$ 3,731,000
Share Repurchase Program, Remaining Authorized, Amount	2,111,000		$ 2,111,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate			0.00%
Restricted Stock [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period			32,330
Restricted Stock [Member] \| Incentive Plan 2020 [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period			32,330	29,675
Share-Based Payment Arrangement, Expense			$ 364,000	$ 283,000
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	332,000		$ 332,000
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition			11 months 23 days
Share-Based Payment Arrangement, Option [Member]
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	$ 45,000		$ 45,000
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition			11 months 26 days

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

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The cash outflow to reacquire common stock during the period.

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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).

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Amount remaining authorized for purchase of share under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership.

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