v2.4.0.8

Share-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2013

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Stock Options Activity

A summary of stock option activity for the year ended December 31, 2013, is as follows:

		Number of Options				Weighted Average Exercise Price Per Share				Weighted Average Remaining Contractual Life				Aggregate Intrinsic Value
Options outstanding—January 1, 2013			4,165,835			$	12.05				8.03			$	23,519
Granted			1,344,714			$	19.01
Exercised			(121,556	)		$	10.74
Forfeited			(153,133	)		$	12.31
Expired			(72,616	)		$	11.24
Options outstanding—December 31, 2013			5,163,244			$	13.89				7.50			$	56,502
Options exercisable—December 31, 2013			2,745,494			$	11.08				6.62			$	37,724
Options vested and expected to vest—December 31, 2013			5,033,649			$	13.77				7.46			$	55,682

Schedule of Weighted Average Assumptions Used and Weighted Average Grant Date Fair Value of Stock Options

Weighted average assumptions used and weighted average grant date fair value of stock options granted for the years ended December 31, 2013, 2012, and 2011, were as follows:

		2013				2012				2011
Approximate risk-free interest rate			1.3	%			1.0	%			1.2	%
Average expected life			6.22-years				6.25-years				6.25-years
Dividend yield			N/A				N/A				N/A
Volatility			44.1	%			44.5	%			44.7	%
Weighted average grant date fair value of common stock underlying options granted		$	19.00			$	16.27			$	14.23
Weighted average grant date fair value of stock options granted		$	8.37			$	6.76			$	5.56

Summarizes the Activities for Unvested RSUs and DSUs

The following table summarizes the activities for our unvested RSUs and DSUs for the year ended December 31, 2013:

		Number of Underlying Shares				Weighted Average Grant Date Fair Value
Unvested—January 1, 2013			—			$	—
Granted			45,611			$	26.26
Vested			(10,331	)		$	24.87
Forfeited/canceled			—			$	—
Unvested—December 31, 2013			35,280			$	26.67
Expected to vest after December 31, 2013			31,850

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- Definition

Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year.

+ 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)(1)

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

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Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year.

+ 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)(1)

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

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Tabular disclosure of the weighted-average grant-date fair value of equity options or other equity instruments granted during the year.

+ 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 (d)(1)

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

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