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Stock-Based Compensation | 6 Months Ended
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Jul. 04, 2015
Stock-Based Compensation |
Stock-Based Compensation | 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 |  | Six Months Ended |
|  | July 4, 2015 |  | June 28, 2014 |  | July 4, 2015 |  | June 28, 2014 |
Cost of revenues |  | $ | 229 |  | $ | 178 |  | $ | 459 |  | $ | 374 |
Research and development |  | 4,960 |  | 4,327 |  | 9,755 |  | 8,568 |
Selling, general and administrative |  | 5,868 |  | 4,777 |  | 11,362 |  | 9,617 |
|  | 11,057 |  | 9,282 |  | 21,576 |  | 18,559 |
Income tax benefit |  | 1,182 |  | 587 |  | 2,486 |  | 1,898 |
|  | $ | 9,875 |  | $ | 8,695 |  | $ | 19,090 |  | $ | 16,661 |
The Company had approximately $66.2 million of total unrecognized compensation costs related to granted stock awards as of July 4, 2015 that are expected to be recognized over a weighted-average period of approximately 2.2 years. There were no significant stock-based compensation costs capitalized into assets in any of the periods presented.

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- Definition The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6418621&loc=d3e17540-113929 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 50 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6406099&loc=d3e25284-112666 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5444-113901 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 + Details
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