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Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2014

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Summary of Activity for RSUs

The following table presents the activity for RSUs under the Plans:

		Year Ended December 31, 2014
		Non-vested RSUs				Weighted Average Grant  Date Fair Value
Non-vested RSUs — beginning of period			732,034			$	28.08
Granted			442,836			$	29.44
Vested			(375,354	)		$	28.53
Forfeited or expired			(82,802	)		$	28.24
Non-vested RSUs — end of period			716,714			$	28.67

Summary of Activity for Options

The following table presents the activity for options under the Plans:

		Year Ended December 31, 2014
		Options				Weighted Average Exercise Price
Outstanding — beginning of period			135,733			$	20.88
Exercised			(83,336	)		$	19.26
Forfeited or expired			(22,173	)		$	28.64
Outstanding — end of period			30,224			$	19.67
Exercisable at end of period			30,224			$	19.67

Summary of Information with Respect to Options Outstanding and Exercisable

The following table summarizes information with respect to options outstanding and exercisable under the Plans at December 31, 2014:

Range of Exercise Prices		Options Outstanding and Exercisable
		Number of Shares				Weighted Average Exercise  Price				Weighted  Average Remaining Contractual Life (In Years)				Aggregate Intrinsic Value (In Thousands)
$15.84 – $24.35			30,224			$	19.67				0.85			$	511,728

Effect of Recording Stock-Based Compensation

The following table reflects the effect of recording stock-based compensation for the years 2014, 2013 and 2012:

		Years Ended December 31,
		2014				2013				2012
Stock-based compensation expense by type of award:
Restricted stock units		$	10,203			$	12,982			$	11,836
Employee stock purchase plan			1,112				1,010				1,195
Total stock-based compensation			11,315				13,992				13,031
Tax effect on stock-based compensation			(331	)			(495	)			(1,862	)
Net effect on net income		$	10,984			$	13,497			$	11,169
Effect on net earnings per share:
Basic		$	0.21			$	0.25			$	0.21
Diluted		$	0.21			$	0.25			$	0.21

Pre-Tax Effect Within Consolidated Statements of Operations of Recording Stock-Based Compensation

The pre-tax effect within the consolidated statements of operations and comprehensive income of recording stock-based compensation for the years 2014, 2013 and 2012 was as follows:

		Years Ended December 31,
		2014				2013				2012
Cost of revenues		$	1,960			$	2,038			$	1,867
Research and development expense			1,659				1,902				2,278
Selling, general and administrative expense			7,696				10,052				8,886
Total pre-tax stock-based compensation expense		$	11,315			$	13,992			$	13,031

Fair Value of Employees' Purchase Rights Estimated using Black-Scholes Option-Pricing Model

The fair value of the employees’ purchase plan rights was estimated using the Black-Scholes option-pricing model with the following weighted average assumptions:

		Years Ended December 31,
		2014				2013				2012
Employee stock purchase plan rights:
Expected life (years)			0.5				0.5				0.5
Risk-free interest rate			0.1	%			0.1	%			0.1	%
Expected volatility			26.4	%			27.7	%			32.2	%
Expected annual dividends per share		$	0.655			$	0.64			$	0.62

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Tabular disclosure of the amount of total share-based compensation cost, including the amounts attributable to each share-based compensation plan and any related tax benefits.

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Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed.

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Tabular disclosure of the changes in outstanding nonvested restricted stock units.

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Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms.

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