Minimum Closing Market Value of Common Stock For Vesting

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- Definition

Minimum Consecutive Trading Days Stock Market Price For Vesting

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No definition available.

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- Definition

Non Qualified Stock Options [Abstract]

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- Definition

Restricted Stock [Abstract]

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- Definition

Vesting Stock Price Consecutive Trading Days

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No definition available.

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- Definition

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

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- Definition

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

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- Definition

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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- Definition

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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- Definition

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

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- Definition

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).

+ References

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- Definition

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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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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- Definition

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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No definition available.

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- Definition

Net number of non-option equity instruments granted to participants.

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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.

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- Definition

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

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No definition available.

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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- Definition

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

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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Number of share options (or share units) exercised during the current period.

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COMPENSATION PLANS (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock available for issuance	700,000
Total compensation expense	$ 3.8	$ 4.3	$ 4.2
Total unrecognized compensation expense	$ 4.6
Unrecognized compensation expense, period for recognition	1 year 7 months 6 days
Restricted Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards, outstanding	362,399	199,374
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise in the period	10,500
Awards, outstanding	296,046	313,464
Non Qualified Stock Options [Abstract]
Options granted in the period	0	0
Options granted, weighted average fair value			$ 23.30
Service Based Vesting [Member] \| Restricted Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted	215,892
Restricted Stock [Abstract]
Granted in period, weighted average fair value	$ 14.49	$ 34.70	$ 41.60
Shares canceled	14,556
Service Based Vesting [Member] \| Stock Options [Member]
Non Qualified Stock Options [Abstract]
Options granted in the period	0	0	0
Service Based Vesting [Member] \| Key Employees [Member] \| Restricted Shares [Member]
Restricted Stock [Abstract]
Restricted shares granted	175,027
Vesting period	3 years
Non Qualified Stock Options [Abstract]
Vesting period	3 years
Service Based Vesting [Member] \| Director [Member] \| Restricted Shares [Member]
Restricted Stock [Abstract]
Restricted shares granted	40,865
Vesting period	1 year
Non Qualified Stock Options [Abstract]
Vesting period	1 year
Service Based Vesting [Member] \| Executive Officer [Member] \| Stock Options [Member]
Restricted Stock [Abstract]
Vesting period			3 years
Non Qualified Stock Options [Abstract]
Options granted in the period			62,327
Vesting period			3 years
Grant term			10 years
Service And Market Condition Based Vesting [Member] \| Restricted Shares [Member]
Restricted Stock [Abstract]
Restricted shares granted			0
Vesting period	2 years	3 years
Granted in period, weighted average fair value	$ 19.22	$ 28.90
Vesting stock price consecutive trading days	20 days
Non Qualified Stock Options [Abstract]
Vesting period	2 years	3 years
Service And Market Condition Based Vesting [Member] \| Stock Options [Member]
Non Qualified Stock Options [Abstract]
Options granted in the period	0	0
Service And Market Condition Based Vesting [Member] \| Key Employees [Member] \| Restricted Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted	63,012
Service And Market Condition Based Vesting [Member] \| Executive Officer [Member] \| Stock Options [Member]
Restricted Stock [Abstract]
Vesting period			3 years
Non Qualified Stock Options [Abstract]
Options granted in the period			93,491
Vesting period			3 years
Grant term			5 years
Closing market value of common stock for vesting			$ 58.50
Minimum consecutive trading days			20 days