Represents the impact of allocated share-based compensation expense on earnings per share, diluted, during the period.

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Represents the impact of allocated share-based compensation expense on earnings per share, basic, during the period.

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Represents the number of additional grants of options during the period.

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Amount of tax benefit for recognition of expense of award under share-based payment arrangement.

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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.

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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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The weighted average fair value at grant date for nonvested equity-based awards issued 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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Number of shares authorized for issuance under share-based payment arrangement.

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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.

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Gross number of share options (or share units) granted during the period.

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Number of options outstanding, including both vested and non-vested options.

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

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Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

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Purchase price of common stock expressed as a percentage of its fair value.

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No definition available.

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Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.

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Note 13 - Stock-based Compensation (Details Textual)			1 Months Ended					3 Months Ended			12 Months Ended
Note 13 - Stock-based Compensation (Details Textual)	Aug. 16, 2021	May 29, 2014	May 31, 2023 $ / shares shares	Feb. 28, 2023 $ / shares shares	Jun. 30, 2022 $ / shares shares	May 31, 2022 $ / shares shares	Feb. 28, 2022 $ / shares shares	Jun. 30, 2023 shares	Jun. 30, 2022 shares	Mar. 31, 2022 shares	Dec. 31, 2023 USD ($) $ / shares shares	Dec. 31, 2022 USD ($) $ / shares shares	Dec. 31, 2021 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)											0	0	0
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested in Period, Fair Value \| $											$ 576,000	$ 392,000	$ 203,000
Share-Based Payment Arrangement, Expense \| $											553,000	715,000	441,000
Share-Based Payment Arrangement, Expense, Tax Benefit \| $											$ 197,000	$ 170,000	$ 110,000
Allocated Share-based Compensation Expense, Impact on Earnings Per Share, Diluted (in dollars per share) \| $ / shares											$ 0.02	$ 0.03	$ 0.03
Allocated Share-based Compensation Expense, Impact on Earnings Per Share, Basic (in dollars per share) \| $ / shares											$ 0.02	$ 0.02	$ 0.02
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount \| $											$ 2,134,000
Director [Member] \| Salaries, Wages and Benefits [Member]
Share-Based Payment Arrangement, Expense \| $											$ 55,000	$ 55,000	$ 80,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Grants in Period (in shares)								2,295	1,855
Restricted Stock [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)											30,608
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											$ 27.97
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	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance (in shares)											0	0
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)											1,402,000
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)				28,313			29,120
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				$ 28.3			$ 38.8
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%			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)			2,295			1,855
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			$ 23.95			$ 29.6
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] \| Minimum [Member] \| Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent		85.00%