Stock-Based Compensation

9 Months Ended

Oct. 03, 2015

10. Stock-Based Compensation

In fiscal 2009, the stockholders of the Company approved the 2009 Stock Incentive Plan (the “2009 Plan”) and the 2009 Employee Stock Purchase Plan (the “2009 Purchase Plan”). In fiscal 2014, the stockholders of the Company approved amendments to both the 2009 Plan and the 2009 Purchase Plan. The amendments authorized additional shares of common stock for issuance, to comply with changes in applicable law, improve the Company’s corporate governance and to implement other best practices. The amended plans are currently effective.

Stock-based compensation costs are based on the fair values on the date of grant for stock options and on the date of enrollment for the employee stock purchase plans, estimated by using the Black-Scholes option-pricing model. The fair values of stock awards and restricted stock units (RSUs) equal their intrinsic value on the date of grant. The fair values of market stock units (MSUs) generally are estimated using a Monte Carlo simulation based on the date of grant.

The following table presents details of stock-based compensation costs recognized in the Condensed Consolidated Statements of Income (in thousands):

	Three Months Ended				Nine Months Ended
	October 3, 2015		September 27, 2014		October 3, 2015		September 27, 2014
Cost of revenues	$	249	$	201	$	708	$	574
Research and development	4,623		4,713		14,378		13,282
Selling, general and administrative	4,350		4,700		15,712		14,317
	9,222		9,614		30,798		28,173
Income tax benefit	1,089		1,158		3,575		3,056
	$	8,133	$	8,456	$	27,223	$	25,117

The Company had approximately $55.3 million of total unrecognized compensation costs related to granted stock awards as of October 3, 2015 that are expected to be recognized over a weighted-average period of approximately 2.0 years. There were no significant stock-based compensation costs capitalized into assets in any of the periods presented.