Intrinsic value of equity-based compensation awards expected to vest. Excludes stock and unit options.

No definition available.

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that are expected to vest in the future as of the reporting date.

+ References

No definition available.

+ Details

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- Definition

Represents the weighted average fair value of equity awards, other than options, that are expected to vest as of the reporting date.

+ References

No definition available.

+ Details

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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

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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

+ Details

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- Definition

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

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Unrecognized cost of unvested options awarded to employees as compensation.

+ References

No definition available.

+ Details

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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.

+ Details

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Stock Option and Compensation Plans - Stock Compensation Expense (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Stock Option and Compensation Plans
Share-based compensation expense	$ 8,248	$ 7,041	$ 24,889	$ 18,474
ESPP
Stock Option and Compensation Plans
Expected weighted average period to recognize share-based compensation costs			6 months
Unrecognized compensation costs, net of estimated forfeitures	300		$ 300
Stock options \| Employees
Stock Option and Compensation Plans
Share-based compensation expense	5,600	3,400	17,300	11,400
Unrecognized share-based compensation costs for option awards, net of estimated forfeitures	48,300		$ 48,300
Expected weighted average period to recognize share-based compensation costs			2 years 8 months 7 days
Non-employee Options \| Consultants
Stock Option and Compensation Plans
Share-based compensation expense	600	1,800	$ 1,500	3,400
Unrecognized share-based compensation costs for option awards, net of estimated forfeitures	$ 1,400		$ 1,400
Expected weighted average period to recognize share-based compensation costs			1 year 5 months 8 days
Restricted stock units
Stock Option and Compensation Plans
RSUs expected to vest (in shares)	513		513
Weighted-average fair value of RSUs expected to vest (in dollars per share)	$ 54.45		$ 54.45
Aggregate intrinsic value of RSUs expected to vest	$ 23,700		$ 23,700
Restricted stock units \| Employees
Stock Option and Compensation Plans
Share-based compensation expense	2,000	$ 1,800	$ 6,100	$ 3,700
Expected weighted average period to recognize share-based compensation costs			2 years 6 months 4 days
Unrecognized compensation costs, net of estimated forfeitures	$ 31,700		$ 31,700