Increase (Decrease) In Share Based Compensation Expense

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- Definition

Share-based Compensation Arrangement Age Requirement to Vest Over Original Vesting Period

+ References

No definition available.

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- Definition

Share-based Compensation Arrangement Time in Service Requirement to Vest Over Original Vesting Period

+ References

No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, vested

+ References

No definition available.

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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-Name Accounting Standards Codification
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- Definition

The amount of expense, net of income tax, recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

No definition available.

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- Definition

Unrecognized cost of unvested share-based compensation awards.

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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

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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- 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 maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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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.

+ References

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- Definition

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

+ References

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

Number of fully vested and expected to vest exercisable options that may 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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- Definition

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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- Definition

Percentage of vesting of share-based compensation awards.

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- Definition

Number of non-vested options forfeited.

+ References

No definition available.

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Stock-Based Compensation Plans (Details) - USD ($) $ / shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, outstanding, number (in shares)	114,943
Options, grants in period, weighted average grant date fair value (in dollars per share)	$ 2.0
Nonvested awards, compensation cost not yet recognized, period for recognition	1 year
Options, grants in period, gross (in shares)	0	0
Grants in period, vested (in shares)	0	0
Plan 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized to issue under share based compensation plans (in shares)	8,700,000
Common stock available under stock option plan (in shares)	1,535,244
Share-based compensation arrangement age requirement to vest over original vesting period	55 years
Time in service requirement to vest over original vesting period	10 years
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonvested awards, compensation cost not yet recognized, period for recognition	2 years
Nonvested awards, compensation cost not yet recognized	$ 45.7		$ 24.3
Equity instruments other than options, vested in period, fair value	13.8	$ 10.7
Allocated share-based compensation expense, net of tax	6.0	3.1
Allocated share-based compensation expense	$ 7.6	$ 4.0
Shares forfeited (in shares)	115,302	100,033
Decrease in stock-based compensation expense	$ 4.5	$ 5.4
Equity instruments other than options, nonvested, number (in shares)	1,805,262		1,530,214
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity instruments other than options, nonvested, number (in shares)	682,000
Award requisite service period (in years)	3 years
Vesting period (in months)	36 months
Estimated vesting of shares based on performance shares (in shares)	682,000
Minimum \| Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights, percentage	0.00%
Options, vested and expected to vest, exercisable, number (in shares)	0
Maximum \| Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights, percentage	200.00%
Options, vested and expected to vest, exercisable, number (in shares)	1,364,000