Fair Value Of Stock Option On Grant Date Net Of Forfeitures

No definition available.

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- Definition

The increase (decrease) during the period in the number of potential shares granted.

+ References

No definition available.

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- Definition

Share-based compensation arrangement by share-based payment award, equity instruments other than options, conversion multiplying factor.

+ References

No definition available.

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- Definition

The annual target cash incentive amount for non-option equity instruments granted to participants.

+ References

No definition available.

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- Definition

Represents the number of shares of common stock that each unit is equal to.

+ References

No definition available.

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- Definition

Share Based Compensation Arrangement Employee Stock Purchase Plan, Percentage of Market Price. Purchase Date

+ References

No definition available.

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- Definition

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

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (i)
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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 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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- 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 equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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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.

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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

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

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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

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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Employee Stock Purchase Plan, Stock Options and Warrants - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	12 Months Ended
	Jun. 30, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost not yet recognized		$ 25.4
Compensation cost not yet recognized, period of recognition		2 years 6 months
Options granted in period (in shares)		329,000	1,200,000	692,000
Fair value of options, net of forfeitures		$ 4.5	$ 20.9	$ 11.1
Options granted in period, weighted average grant date fair value (in dollars per share)		$ 13.70	$ 16.78	$ 16.05
Stock-Settled Performance-Based Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		1 year
Compensation cost not yet recognized		$ 2.5
Compensation cost not yet recognized, period of recognition		1 year 4 months 24 days
Weighted average grant-date fair value (in dollars per share)		$ 43.60
Restricted stock units granted (in shares)		122,000	0	0
Restricted stock units vested (in shares)			0	0
Number of shares of common stock for each unit		1
Stock-Settled Performance-Based Restricted Stock Units \| rTSR \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Multiplying factor		75.00%
Number of shares of common stock for each unit		0.75
Stock-Settled Performance-Based Restricted Stock Units \| rTSR \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Multiplying factor		125.00%
Number of shares of common stock for each unit		1.25
Stock-Settled Performance-Based Restricted Stock Units \| Performance period 1
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		1 year
Decrease in the potential shares of common stock to be granted	25,415
Stock-Settled Performance-Based Restricted Stock Units \| Performance period 1 \| FCF \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Multiplying factor		0.00%
Stock-Settled Performance-Based Restricted Stock Units \| Performance period 1 \| FCF \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Multiplying factor		100.00%
Stock-Settled Performance-Based Restricted Stock Units \| Performance period 2
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		2 years
Stock-Settled Performance-Based Restricted Stock Units \| Performance period 2 \| FCF \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Multiplying factor		0.00%
Stock-Settled Performance-Based Restricted Stock Units \| Performance period 2 \| FCF \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Multiplying factor		200.00%
Stock-Settled Performance-Based Restricted Stock Units \| Performance period 3
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		3 years
Stock-Settled Performance-Based Restricted Stock Units \| Performance period 3 \| FCF \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Multiplying factor		0.00%
Stock-Settled Performance-Based Restricted Stock Units \| Performance period 3 \| FCF \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Multiplying factor		200.00%
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		1 year
Compensation cost not yet recognized		$ 0.7
Compensation cost not yet recognized, period of recognition		6 months
Weighted average grant-date fair value (in dollars per share)		$ 42.98
Restricted stock units granted (in shares)		34,000	0	0
Restricted stock units vested (in shares)			0	0
Cash-Settled Performance-Based Share-Based Awards (Liability Awards)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Target cash incentive		$ 1.0
Compensation cost not yet recognized		$ 1.0
Compensation cost not yet recognized, period of recognition		1 year 6 months
Cash-Settled Performance-Based Share-Based Awards (Liability Awards) \| Performance period 1
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		1 year
Cash-Settled Performance-Based Share-Based Awards (Liability Awards) \| Performance period 1 \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Multiplying factor		125.00%
Cash-Settled Performance-Based Share-Based Awards (Liability Awards) \| Performance period 2
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		2 years
Cash-Settled Performance-Based Share-Based Awards (Liability Awards) \| Performance period 2 \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Multiplying factor		250.00%
Cash-Settled Performance-Based Share-Based Awards (Liability Awards) \| Performance period 3
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		3 years
Cash-Settled Performance-Based Share-Based Awards (Liability Awards) \| Performance period 3 \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Multiplying factor		250.00%
2018 Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for grant (in shares)		1,297,062
2018 Incentive Plan \| Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option contractual life		7 years
2018 Incentive Plan \| Stock Options \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		3 years
2018 Incentive Plan \| Stock Options \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		5 years
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for grant (in shares)		40,073
Purchase price for ESPP, percent of market price		95.00%