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Effective date of employment agreement.

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Performance-based awards, awards granted, grant date market price.

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Share based compensation arrangement by share based payment award, equity instruments other than options, dividend equivalents number.

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Share based compensation arrangement by share based payment award equity instruments other than options maximum shares to be earned.

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Share based compensation average annual stock holders return percentage description.

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Share based compensation equity award for full performance period other than options for grant price per share.

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Share based compensation equity award for interim period other than options for grant price per share.

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Shareholder return average annual return threshold net.

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Shares granted to key employee.

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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

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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.

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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 equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting 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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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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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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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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Number of fully vested and expected to vest options outstanding that can be converted into shares under option plan. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Number of shares issued under share-based payment arrangement.

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Share-Based Compensation (Narrative) (Details) - USD ($)				12 Months Ended
	Jul. 20, 2021	Jun. 15, 2018	Jun. 15, 2011	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average grant date fair value per share				$ 11.98
Fair value of vested shares				$ 6.0	$ 0.9	$ 0.5
Shares vested				247,000
Shares forfeited				52,000
Grant date market price		$ 28.91
Shares granted under Stock incentive plan				149,000
Effective date of the employment agreement		Jun. 15, 2023
Maximum shares to be earned					114,000
Share based compensation average annual total stock holders return, description				The percentage of the market performance-based equity award to be earned will be determined based on the Company’s average annual TSR over the Interim Performance Period and/or over the Full Performance Period as follows: if average annual TSR (1) is below 4%, the percentage of grant earned would be 0%, (2) equals 4%, the percentage of grant earned would be 33.3%, (3) equals 6.5%, the percentage of grant earned would be 66.7%, and (4) equals 10% or above, the percentage of grant earned would be 100%.
Common stock, shares issued				13,658,000	13,530,000
Chief Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted to Company's President		113,636	378,800
Average annual TSR threshold			6.50%
Vesting period			7 years
Common stock, shares issued	113,636
Dividend equivalents rights paid	300,000
Time-Based Awards [Member] \| Chief Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares vested		189,400
Performance-Based Shares [Member] \| Chief Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares forfeited		189,400
Time-Based Restricted Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares will vest upon the fifth anniversary		152,000
Market Performance-Based Equity Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation, interim period other than option grant, price per share		$ 21.78
Share based compensation, full performance period other than option grant, price per share		$ 19.60
Market Performance-Based Equity Award [Member] \| Chief Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted under Stock incentive plan		227,000
Dividend equivalent rights		227,000
2017 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for grant under Stock Incentive Plan		38,000		200,000
Aggregate cost of awards not yet recognized				$ 3,500,000
Unrecognized cost recognition period				1 year 8 months 12 days
Shares granted under Stock incentive plan		114,000
2017 Plan [Member] \| Time-Based Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued				149,000	63,000	79,000
Weighted-average grant date fair value per share				$ 11.98	$ 17.48	$ 21.25
New Amended and Restated Employment Agreement [Member] \| Time-Based Restricted Shares [Member] \| Chief Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted to Company's President		152,000
Grant date market price		$ 28.91