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Note 13 - Stock-based Compensation (Details Textual) |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended
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Aug. 16, 2021 | May 29, 2014 | Jun. 30, 2022 $ / shares shares | May 31, 2022 $ / shares shares | Feb. 28, 2022 $ / shares shares | Apr. 30, 2021 USD ($) $ / shares | Mar. 31, 2021 $ / shares shares | Aug. 31, 2020 USD ($) $ / shares shares | Apr. 30, 2020 $ / shares shares | Mar. 31, 2020 $ / shares shares | Jan. 31, 2020 $ / shares shares | Mar. 31, 2022 shares | Jun. 30, 2020 shares | Mar. 31, 2020 shares | Sep. 30, 2022 USD ($) shares | Sep. 30, 2021 USD ($) | Dec. 31, 2022 USD ($) $ / shares shares | Dec. 31, 2021 USD ($) $ / shares shares | Dec. 31, 2020 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested in Period, Fair Value | $ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 392,000 | $ 203,000 | $ 759,000
Share-Based Payment Arrangement, Expense | $ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 715,000 | 441,000 | 461,000
Share-Based Payment Arrangement, Expense, Tax Benefit | $ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 170,000 | $ 110,000 | $ 100,000
Allocated Share-based Compensation Expense, Impact on Earnings Per Share, Diluted (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.03 | $ 0.03 | $ 0.06
Allocated Share-based Compensation Expense, Impact on Earnings Per Share, Basic (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.02 | $ 0.02 |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total | $ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2,414,000 |  |
Director [Member] | Salaries, Wages and Benefits [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Payment Arrangement, Expense | $ |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 55,000 | $ 80,000 |  |  | $ 90,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Grants in Period (in shares) |  |  |  |  |  |  |  |  |  |  |  |  | 968 | 1,304 | 1,855 |  |  |  |
Restricted Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 34,475 |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 37.18 |  |
Stock Award [Member] | Director [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) |  |  |  |  |  |  |  |  | 968 |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  | $ 10.35 |  |  |  |  |  |  |  |  |  |
Stock Award [Member] | Chief Executive Officer [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) |  |  |  |  |  |  |  | 160,000 |  |  |  |  |  |  |  |  |  |  |
Accrual Shares to Each Non-employee Director [Member] | Nine Non-Employee Directors [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Grants in Period (in shares) |  |  |  |  |  |  |  |  |  |  |  | 652 |  |  |  |  |  |  |
Stock Split To [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders' Equity Note, Stock Split, Conversion Ratio | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  |
The 2014 Stock Option Plan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,000,000 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 716,000 |
The 2014 Stock Option Plan [Member] | Stock Award [Member] | Key Employees [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) |  |  |  |  | 29,120 |  |  | 53,328 |  |  | 28,000 |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share) | $ / shares |  |  |  |  | $ 38.80 | $ 15.09 |  | $ 7.56 |  |  | $ 14.11 |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year) |  |  |  |  |  | 4 years |  | 4 years |  |  | 4 years |  |  |  |  |  |  |  |
The 2014 Stock Option Plan [Member] | Stock Award [Member] | Key Employees [Member] | Share-Based Payment Arrangement, Tranche One [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage |  |  |  |  | 25.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |
The 2014 Stock Option Plan [Member] | Stock Award [Member] | Director [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) |  |  |  | 1,855 |  |  | 5,216 |  |  | 10,432 |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share) | $ / shares |  |  |  | $ 29.60 |  |  | $ 15.43 |  |  | $ 7.69 |  |  |  |  |  |  |  |  |
The 2014 Stock Option Plan [Member] | Stock Award [Member] | A Key Employee [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) |  |  | 3,500 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share) | $ / shares |  |  | $ 27.68 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
The 2014 Stock Option Plan [Member] | Stock Award [Member] | A Key Employee [Member] | Share-Based Payment Arrangement, Tranche One [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage |  |  | 25.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
The 2014 Stock Option Plan [Member] | Stock Award [Member] | Chief Executive Officer [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share) | $ / shares |  |  |  |  |  |  |  | $ 8.84 |  |  |  |  |  |  |  |  |  |  |
The 2014 Stock Option Plan [Member] | Stock Award [Member] | Chief Executive Officer [Member] | The 2024 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Number of Shares | $ |  |  |  |  |  | $ 10,000 |  | $ 20,000 |  |  |  |  |  |  |  |  |  |  |
The 2014 Stock Option Plan [Member] | Stock Award [Member] | Chief Executive Officer [Member] | The 2025 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Number of Shares | $ |  |  |  |  |  |  |  | $ 40,000 |  |  |  |  |  |  |  |  |  |  |
The 2014 Stock Option Plan [Member] | Minimum [Member] | Restricted Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent |  | 85.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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