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Note 16 - Stock Option Plan (Details Textual) - USD ($) |  |  |  | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | ---
Jul. 20, 2023 | Jan. 18, 2023 | May 17, 2017 | Mar. 31, 2023 | Dec. 31, 2022 | May 31, 2022 | Jul. 31, 2021 | Jan. 31, 2021 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Apr. 08, 2022 | Jan. 31, 2017
Share-Based Payment Arrangement, Expense |  |  |  |  |  |  |  |  | $ 750,000 | $ 848,000 | $ 1,100,000 |  |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount |  |  |  |  | $ 581,000 |  |  |  | 517,000 | 581,000 | 1,400,000 |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested in Period, Fair Value |  |  |  |  |  |  |  |  | $ 1,100,000 | $ 1,100,000 | $ 1,200,000 |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Nonvested, Number of Shares (in shares) |  |  |  |  | 127,005 |  |  |  | 65,671 | 127,005 | 237,500 |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Option, Nonvested, Weighted Average Exercise Price (in dollars per share) |  |  |  |  | $ 4.69 |  |  |  | $ 4.99 | $ 4.69 | $ 4.28 |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period (in shares) |  |  |  |  |  |  |  |  | 19,403 | 445,308 | 302,744 |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) |  |  |  |  |  |  |  |  | 30,000 |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share) |  |  |  | $ 5.49 | $ 6.16 | $ 5.28 | $ 5.69 | $ 4.14 |  |  |  |  |
Proceeds from Stock Options Exercised |  |  |  |  |  |  |  |  | $ 295,000 | $ 5,476,000 | $ 3,475,000 |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value |  |  |  |  |  |  |  |  | 90,000 | 4,000,000 | 3,800,000 |  |
Share-Based Payment Arrangement, Option [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Payment Arrangement, Expense |  |  |  |  |  |  |  |  | 246,000 | 300,000 | 485,000 |  |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount |  |  |  |  | $ 400,000 |  |  |  | 179,000 | 400,000 | 635,000 |  |
Employee Service, Share Based Compensation Tax Expense (Benefit) from Compensation Expense |  |  |  |  |  |  |  |  | $ 3,000 | $ (587,000) | $ (873,000) |  |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) |  |  |  |  |  |  |  |  | 1 year 2 months 12 days |  |  |  |
Stock Options One [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested, Number of Shares (in shares) |  |  |  |  |  |  |  |  | 56,334 |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested, Weighted Average Grant Date Fair Value (in dollars per share) |  |  |  |  |  |  |  |  | $ 18.4 |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Nonvested Options Forfeited, Number of Shares (in shares) |  |  |  |  |  |  |  |  | 30,000 |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Nonvested Options Forfeited, Weighted Average Grant Date Fair Value (in dollars per share) |  |  |  |  |  |  |  |  | $ 19.87 |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period (in shares) |  |  |  |  |  |  |  |  | 5,000 |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercised, Weighted Average Grant Date Fair Value (in dollars per share) |  |  |  |  |  |  |  |  | $ 17.74 |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) |  |  |  |  |  |  |  |  | 30,000 |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share) |  |  |  |  |  |  |  |  | $ 19.87 |  |  |  |
Restricted Stock Units (RSUs) [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) |  |  |  |  |  |  |  |  | 48,748 |  | 0 |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) |  |  |  |  |  |  |  |  | 3 years |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number (in shares) |  |  |  |  | 14,786 |  |  |  | 43,160 | 14,786 |  |  |
Restricted Stock Units (RSUs) [Member] | Directors and Executive Officers [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Payment Arrangement, Expense |  |  |  |  |  |  |  |  | $ 504,000 | $ 453,000 |  |  |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount |  |  |  |  | $ 182,000 |  |  |  | $ 338,000 | 182,000 |  |  |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) |  |  |  |  |  |  |  |  | 1 year 6 months |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) | 16,500 | 32,248 |  |  |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement by Share Based Payment Award, Equity Instruments Other Than Options, Granted at Closing Price (in dollars per share) | $ 13.93 | $ 20.46 |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) |  | 1 year |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number (in shares) |  |  |  |  |  |  |  |  | 43,160 |  |  |  |
Restricted Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Payment Arrangement, Expense |  |  |  |  |  |  |  |  | $ 0 | 95,000 | $ 602,000 |  |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount |  |  |  |  | $ 0 |  |  |  | $ 0 | $ 0 | $ 729,000 |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) |  |  |  |  |  |  |  |  | 0 | 0 | 60,000 |  |
Share Based Compensation Arrangement by Share Based Payment Award, Equity Instruments Other Than Options, Granted at Closing Price (in dollars per share) |  |  |  |  |  |  |  |  |  |  | $ 17.74 |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number (in shares) |  |  |  |  |  |  |  |  | 0 |  |  | 40,000 |
Stock Option Plan 2010 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share Based Compensation, Arrangement By Share Based Payment Award, Common Stock Reserved As Percentage Of Issued And Outstanding |  |  |  |  |  |  |  |  |  |  |  |  | 30.00%
Common Stock, Capital Shares Reserved for Future Issuance (in shares) |  |  |  |  |  |  |  |  |  |  |  |  | 3,494,478
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized (in shares) |  |  | 0 |  |  |  |  |  |  |  |  |  |
The 2017 Omnibus Stock Incentive Plan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share Based Compensation, Arrangement By Share Based Payment Award, Common Stock Reserved As Percentage Of Issued And Outstanding |  |  | 30.00% |  |  |  |  |  |  |  |  |  |
Common Stock, Capital Shares Reserved for Future Issuance (in shares) |  |  | 3,848,341 |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares) |  |  |  |  |  |  |  |  | 1,032,173 |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Percentage of Outstanding Stock Maximum |  |  |  |  |  |  |  |  |  | 5.50% |  |  |

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- 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 -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition Gross number of share options (or share units) granted during the period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(01) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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