Share-Based Compensation Arrangement By Share-Based Payment Award, Performance Adjustment Percent

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- Definition

Share-Based Compensation Arrangement By Share-Based Payment Award, Performance Measurement Period

+ References

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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.

+ References

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

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

Unrecognized cost of unvested options awarded to employees as compensation.

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
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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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Share-based Compensation - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expenses	$ 2.4	$ 2.4	$ 9.7	$ 6.6
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum unrecognized cost for stocks and RSU's	$ 19.9		$ 19.9
Unrecognized compensation cost, weighted average period of recognition			1 year 11 months 5 days
Time Based Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			3 years
Awards with Performance Conditions \| 2015 LTIP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			1 year
Awards with Performance Conditions \| 2016 LTIP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Requisite service period			2 years
Awards with Performance Conditions \| 2017 LTIP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			3 years
Requisite service period			2 years
Performance adjustment percent			25.00%
Performance measurement period			1 year