Closing Price of Common Stock

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- Definition

Employee Service Share-based Compensation, Share-based Awards, Total Compensation Cost Not yet Recognized

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Employee Service Share-based Compensation, Share-based Awards, Total Compensation Cost Not yet Recognized, Period for Recognition

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Award Expiration Period

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- Definition

Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Acquired In Period

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- Definition

Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Acquired In Period

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- Definition

Share based compensation arrangement by share based payment awards number of units eligible to vest as a multiple of number of units granted.

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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://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 14.F)
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-Section 50
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-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 14
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- Definition

Aggregate number of common shares reserved for future issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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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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No definition available.

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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).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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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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- Definition

Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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-Name Accounting Standards Codification
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- Definition

Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Number of shares issued in lieu of cash for services contributed to the entity. Number of shares includes, but is not limited to, shares issued for services contributed by vendors and founders.

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(Textual) (Details) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
(Textual) (Details) $ / shares in Units, $ in Millions	Sep. 30, 2016 USD ($) $ / shares shares	Sep. 30, 2015 USD ($)	Sep. 30, 2016 USD ($) $ / shares shares	Sep. 30, 2015 USD ($)	Apr. 20, 2015 shares
Share-based Compensation Plans (Textual)
Share-based compensation expense \| $	$ 4.7	$ 1.2	$ 6.5	$ 2.7
Corporation granted shares of common stock (in shares) \| shares			940
Common stock available for future grants under share-based compensation plans (in shares) \| shares					1,300,000
Stock Incentive Plans After 2012 [Member]
Share-based Compensation Plans (Textual)
Vesting period			5 years
Stock Incentive Plans Prior To 2013 [Member]
Share-based Compensation Plans (Textual)
Vesting period			3 years
Employee Stock Option [Member]
Share-based Compensation Plans (Textual)
Corporation acquired stock options (in shares \| shares			1,466,408
Stock option award vesting period			10 years
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Plans (Textual)
Corporation granted options to purchase restricted stock performance units (in shares) \| shares			133,620
Unrecognized compensation expense \| $	$ 5.6		$ 5.6
Unrecognized compensation expense, period for recognition			2 years 7 months 6 days
Restricted Stock Units (RSUs) [Member] \| Minimum [Member]
Share-based Compensation Plans (Textual)
Restricted stock performance units eligible to vest as a multiple of number of units granted			0.5
Restricted Stock Units (RSUs) [Member] \| Maximum [Member]
Share-based Compensation Plans (Textual)
Restricted stock performance units eligible to vest as a multiple of number of units granted			1.5
Equity Option [Member]
Share-based Compensation Plans (Textual)
Common stock available for future grants under share-based compensation plans (in shares) \| shares	669,081		669,081
Weighted-average remaining contractual terms for outstanding stock options			6 years 2 months 12 days
Weighted-average remaining contractual terms for exercisable stock options			5 years 8 months 15 days
Outstanding in-the-money stock options, intrinsic value \| $	$ 62.3		$ 62.3
Exercisable in-the-money stock options, intrinsic value \| $	$ 57.6		$ 57.6
Closing price of common stock (dollars per share) \| $ / shares	$ 44.13		$ 44.13
Unrecognized compensation expense \| $	$ 2.3		$ 2.3
Unrecognized compensation expense, period for recognition			4 years 4 months 24 days
Restricted Stock Awards [Member]
Share-based Compensation Plans (Textual)
Corporation acquired restricted stock awards (in shares \| shares			484,892
Unrecognized compensation expense \| $	$ 14.8		$ 14.8
Unrecognized compensation expense, period for recognition			1 year 6 months