Performance Measurement Period

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Performance Metric, Percentage

+ References

No definition available.

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- Definition

Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Outstanding

+ References

No definition available.

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- Definition

Share-based compensation arrangement by sharebased payment award possible payout percentage.

+ References

No definition available.

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- Definition

Number of performance conditions

+ References

No definition available.

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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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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.

+ References

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- Definition

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

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-Publisher FASB
-Name Accounting Standards Codification
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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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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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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).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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-Section 50
-Paragraph 2
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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.

+ References

No definition available.

+ Details

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- Definition

Number of shares authorized for issuance under share-based payment arrangement.

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- Definition

The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

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- Definition

The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

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- Definition

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

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- Definition

Intrinsic value of vested award under share-based payment arrangement. Excludes share and unit options.

+ References

No definition available.

+ Details

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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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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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SHARE-BASED COMPENSATION - Additional Information (Detail) $ / shares in Units, shares in Millions, $ in Millions		12 Months Ended
	Mar. 15, 2020	Dec. 31, 2021 USD ($) performance_condition $ / shares shares	Dec. 31, 2020 USD ($) $ / shares	Dec. 31, 2019 USD ($) $ / shares	Dec. 31, 2018 $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards outstanding to officers, directors and key employees \| shares		1.7
Share-based compensation		$ 7.0	$ 6.3	$ 10.1
Unrecognized compensation expense related to share-based compensation		$ 7.3
Remaining weighted-average period		1 year 7 months 6 days
Recognized income tax benefit		$ 0.7	0.4	2.0
Weighted-average remaining contractual life of options exercisable		1 year 7 months 6 days
Range of prices, lower limit \| $ / shares		$ 32.05
Range of prices, upper limit \| $ / shares		$ 50.47
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation		$ 4.4	4.6	$ 5.8
Restricted Stock Units (RSUs) \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		3 years
Restricted Stock Units (RSUs) \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		4 years
Stock and Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in USD per share) \| $ / shares		$ 2.78		$ 12.55	$ 17.35
Intrinsic value of units vested		$ 1.2	2.3	$ 5.7
Long Term Performance Stock Unit Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation		2.6	$ 1.7	$ 4.3
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in USD per share) \| $ / shares			$ 13.31	$ 16.66
Intrinsic value of units vested		0.3	$ 1.3	$ 1.0
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation		$ 0.0	$ 0.0
Award vesting period		4 years
Stock option year term		10 years
2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total number of shares authorized to be issued under our stock incentive plans \| shares		3.0
2018 \| Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation award, number of performance conditions \| performance_condition		2
Vested award performance target level, percentage	25.00%
Award Vesting Rights, Performance Metric, Percentage	0.00%
2018 \| Performance Shares \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Possible payouts		0.00%
2018 \| Performance Shares \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Possible payouts		200.00%
2017 and 2018 \| Long Term Performance Stock Unit Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		2 years
Performance Period		2 years