Estimated Fair Value Of Common Stock

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- Definition

Share Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Granted, Weighted Average Exercise Price

+ References

No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Fair Value

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Lump Sum Percentage

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- Definition

Unrecognized cost of unvested share-based compensation awards.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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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

Unrecognized cost of unvested share-based awards, other than options, awarded to employees as compensation.

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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 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 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

Weighted average remaining contractual term for equity-based awards excluding options, 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 equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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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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-Publisher FASB
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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.

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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

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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- 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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Stock-based Compensation - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jun. 07, 2018	Dec. 07, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average grant date fair value (in dollars per share)	$ 38.38	$ 35.01	$ 14.48
Aggregate intrinsic value of options exercised	$ 32,000	$ 8,600	$ 3,900
Estimated fair value of common stock (in dollars per share)	$ 36.1
Employee stock option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense	$ 68,900
Compensation cost, weighted average recognition period	2 years 8 months 23 days
Second Amendment And Restated Equity Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity awards (in shares)	10,229,068			4,500,000
Inducement Award Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity awards (in shares)		874,500			418,000
Minimum \| Employee stock option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based awards, vesting period	1 year
Maximum \| Employee stock option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based awards, vesting period	4 years
Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost, weighted average recognition period	2 years 8 months 16 days
Unrecognized compensation expense	$ 17,600
Fair value of restricted stock vested	$ 5,100	$ 1,300	$ 900
Shares issued (in shares)	266,514
Vested (in shares)	129,961
Awards outstanding (in shares)	572,706	447,049
Restricted Stock With Non-Market Performance Conditions
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued (in shares)		98,817
Vested (in shares)	19,764
Stock Appreciation Rights (SARs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued (in shares)	112,000
Exercise price (in dollars per share)	$ 53.83
Awards outstanding (in shares)	91,000
Weighted average contractual life	4 years 3 months 13 days
Employee stock purchase plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued (in shares)	645,814
Lump sum percentage (equal to)	85.00%
Fair value equivalent of common stock	$ 25