Share based compensation arrangement by share based payment award number of common stock reserved for issuance.

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- Definition

Share based compensation arrangement by share based payment award option awards contractual term.

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

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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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-Publisher FASB
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-Topic 718
-SubTopic 10
-Section 50
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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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-Publisher FASB
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-Topic 718
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- Definition

Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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-Publisher FASB
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- Definition

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

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-Publisher FASB
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Stock-Based Compensation (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	May 19, 2017	May 09, 2012
Share Based Compensation Arrangement by Share Based Payment Award [Line Items]
Options granted (in shares)	0
Total intrinsic value of options exercised	$ 0	$ 5,005	$ 10,571
Stock Options Plans
Share Based Compensation Arrangement by Share Based Payment Award [Line Items]
Recognized stock-based compensation costs	0	6	40
Recognized stock-based compensation costs, net of tax	0	4	24
Pre-tax unrecognized compensation expense	0
Restricted Stock Units (RSUs)
Share Based Compensation Arrangement by Share Based Payment Award [Line Items]
Recognized stock-based compensation costs	31,382	36,316	35,019
Recognized stock-based compensation costs, net of tax	24,436	$ 22,037	$ 21,250
Pre-tax unrecognized compensation expense	$ 20,834
Recognized expense over a weighted-average period, years	1 year 3 months 4 days
2012 Long-Term Incentive Plan
Share Based Compensation Arrangement by Share Based Payment Award [Line Items]
Common stock reserved for issuance (in shares)					3,200,000
Additional awards available to be granted (in shares)				0
2012 Long-Term Incentive Plan \| Stock Options Plans
Share Based Compensation Arrangement by Share Based Payment Award [Line Items]
Option awards contractual term (years)	10 years
2012 Long-Term Incentive Plan \| Minimum \| Stock Options Plans
Share Based Compensation Arrangement by Share Based Payment Award [Line Items]
Vesting period (years)	3 years
2012 Long-Term Incentive Plan \| Minimum \| Restricted Stock Units (RSUs)
Share Based Compensation Arrangement by Share Based Payment Award [Line Items]
Vesting period (years)	3 years
2012 Long-Term Incentive Plan \| Maximum \| Stock Options Plans
Share Based Compensation Arrangement by Share Based Payment Award [Line Items]
Vesting period (years)	5 years
2012 Long-Term Incentive Plan \| Maximum \| Restricted Stock Units (RSUs)
Share Based Compensation Arrangement by Share Based Payment Award [Line Items]
Vesting period (years)	5 years
2017 Long-Term Incentive Plan
Share Based Compensation Arrangement by Share Based Payment Award [Line Items]
Common stock reserved for issuance (in shares)				3,000
Non-employee director
Share Based Compensation Arrangement by Share Based Payment Award [Line Items]
Options granted (in shares)	1,000	1,000	1,000