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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 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)
-URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809

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-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901

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-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 14
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- Definition

Aggregate number of common shares reserved for future issuance.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.29)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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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

Disclosure of the aggregate tax benefit realized from the exercise of stock options and the conversion of similar instruments during the annual period.

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- Definition

The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

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

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Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6513228

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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

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

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

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

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

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- Definition

Number of share instruments newly issued under a share-based compensation plan.

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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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- Definition

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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Share-Based Compensation - Textual (Details) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2017 USD ($) $ / shares shares	Mar. 31, 2016 USD ($) shares	Apr. 26, 2017 shares	Apr. 20, 2015 shares
Share-based Compensation Plans (Textual)
Share-based compensation expense	$ 3,800	$ 800
Excess tax benefit from share-based compensation	6,100	300
Cash received from option exercises	$ 906	498
Certain officers
Share-based Compensation Plans (Textual)
Corporation granted shares of common stock (in shares) \| shares	13,300
Stock Incentive Plan of 2015
Share-based Compensation Plans (Textual)
Number of shares authorized under stock incentive plan (in shares) \| shares				1,300,000
Common stock available for future grants under share-based compensation plans (in shares) \| shares	287,348
Stock Incentive Plan of 2017 \| Subsequent Event
Share-based Compensation Plans (Textual)
Number of shares authorized under stock incentive plan (in shares) \| shares			1,750,000
Stock Incentive Plans After 2012
Share-based Compensation Plans (Textual)
Vesting period	5 years
Stock Incentive Plans Prior To 2013
Share-based Compensation Plans (Textual)
Vesting period	3 years
Stock options
Share-based Compensation Plans (Textual)
Stock option award vesting period	10 years
Outstanding in-the-money stock options, intrinsic value		$ 11,000
Stock issued from exercises (in shares) \| shares	496,000	37,000
Stock options \| Non Vested
Share-based Compensation Plans (Textual)
Corporation granted options to purchase common stock (in shares) \| shares	126,695
Restricted stock units
Share-based Compensation Plans (Textual)
Corporation granted options to purchase restricted stock performance units (in shares) \| shares	159,462
Stock issued from exercises (in shares) \| shares	40,141
Unrecognized compensation expense	$ 13,400
Unrecognized compensation expense, period for recognition	3 years 4 months
Restricted stock units \| Minimum
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 \| Maximum
Share-based Compensation Plans (Textual)
Restricted stock performance units eligible to vest as a multiple of number of units granted	1.5
Equity Option
Share-based Compensation Plans (Textual)
Weighted-average remaining contractual terms for outstanding stock options	6 years 11 months
Weighted-average remaining contractual terms for exercisable stock options	5 years 8 months
Outstanding in-the-money stock options, intrinsic value	$ 29,000
Exercisable in-the-money stock options, intrinsic value	$ 24,300
Closing price of common stock (dollars per share) \| $ / shares	$ 51.15
Unrecognized compensation expense	$ 3,200
Unrecognized compensation expense, period for recognition	4 years 4 months
Restricted stock awards
Share-based Compensation Plans (Textual)
Unrecognized compensation expense	$ 4,800
Unrecognized compensation expense, period for recognition	1 year 22 days