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Stockholders' Equity (Tables)

3 Months Ended

Mar. 31, 2012

Changes in stockholders’ equity for the three months ended March 31, 2012 were as follows (in thousands):



Balance as of December 31, 2011	$	700,342
Net income	22,460
Other comprehensive income, net	3,058
Proceeds from the issuance of common stock and ESPP shares	14,232
Issuance of common stock to board members	71
Repurchase and retirement of restricted stock for payment of taxes	(1,124		)
Stock-based compensation	6,104
Stock-based compensation income tax benefits	1,021
Balance as of March 31, 2012	$	746,164

Schedule of Comprehensive Income (Loss)

Components of comprehensive income, net of income tax, for the three month periods ended March 31, 2012 and 2011 were as follows (in thousands):



	Three Months Ended March 31,
	2012			2011
Net income, as reported	$	22,460		$	23,277
Other comprehensive income (loss)
Foreign currency translation adjustment	1,788			2,328
Unrealized gains (losses)
Change in net unrealized gain (loss) on available-for-sale securities during the period	2,542			(3,413		)
Realized (gain) loss on available-for-sale securities, net of tax	(1,272		)	230
Total unrealized gains (losses)	1,270			(3,183		)
Total other comprehensive income (loss), net	3,058			(855		)
Comprehensive income	$	25,518		$	22,422

Schedule of Stock Option Activity

A summary of the Company’s stock option activity for all equity incentive plans for the three months ended March 31, 2012 is as follows (in thousands, except per share data and number of years):



	Number of Shares		Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (Years)	Aggregate Intrinsic Value
Outstanding as of December 31, 2011	5,513		$	50.80
Granted	767		68.39
Exercised	(316	)	45.09
Cancelled	(35	)	59.00
Outstanding as of March 31, 2012	5,929		$	53.33	4.1	$	80,823
Exercisable as of March 31, 2012	3,737		$	49.97	3.1	$	62,235

Schedule of Restricted Stock and Deferred Issuance Restricted Stock

A summary of the Company’s restricted stock and deferred issuance restricted stock award activity for the three months ended March 31, 2012 is as follows (in thousands, except per share data):



	Number of Shares		Weighted Average Grant Date Fair Value
Unvested as of December 31, 2011	62		$	54.35
Granted	3		61.86
Vested	(3	)	51.17
Forfeited	(1	)	53.26
Unvested as of March 31, 2012	61		$	54.82

Schedule of Performance Stock Awards

A summary of the Company’s performance stock award activity for the three months ended March 31, 2012 is as follows (in thousands, except per share data):



	Number of Shares		Weighted Average Grant Date Fair Value
Unvested as of December 31, 2011	109		$	73.92
Awarded	108		82.00
Vested and issued	(46	)	72.33
Cancelled	(1	)	72.63
Unvested as of March 31, 2012	170		$	79.46

- Definition

Tabular disclosure of components of a stock option or other award plan under which equity-based compensation is awarded to employees, typically comprised of the amount of unearned compensation (deferred compensation cost), compensation expense, and changes in the quantity and fair value of the shares (or other type of equity) granted, exercised, forfeited, and issued and outstanding pertaining to that plan. Disclosure may also include nature and general terms of such arrangements that existed during the period and potential effects of those arrangements on shareholders, effect of compensation cost arising from equity-based payment arrangements on the income statement, method of estimating the fair value of the goods or services received, or the fair value of the equity instruments granted, during the period, cash flow effects resulting from equity-based payment arrangements and, for registrants that accelerate vesting of out of the money share options, reasons for the decision to accelerate.

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- Definition

Tabular disclosure of components of comprehensive income (loss) including, but not limited to: (a) foreign currency translation adjustments; (b) gains (losses) on foreign currency transactions that are designated as, and are effective as, economic hedges of a net investment in a foreign entity; (c) gains (losses) on intercompany foreign currency transactions that are of a long-term-investment nature, when the entities to the transaction are consolidated, combined, or accounted for by the equity method in the reporting enterprise's financial statements; (d) change in the market value of a futures contract that qualifies as a hedge of an asset reported at fair value; (e) unrealized holding gains (losses) on available-for-sale securities and that resulting from transfers of debt securities from the held-to-maturity category to the available-for-sale category; (f) a net loss recognized as an additional pension liability not yet recognized as net periodic pension cost; and (g) the net gain (loss) and net prior service cost or credit for pension plans and other postretirement benefit plans.

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