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Stock-Based Compensation | 6 Months Ended
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Jul. 02, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Stockholders' Equity Note Disclosure [Text Block] | Equity Series A Junior Participating Preferred Stock and Stockholder Rights Plan In November 2007, the Company authorized and declared a dividend of one preferred stock purchase right (Right) for each outstanding share of its common stock to stockholders of record at the close of business on November 26, 2007 (the Record Date) pursuant to a Rights Agreement, dated as of November 9, 2007, with Computershare Trust Company, N.A., as Rights Agent (the Rights Agreement). In addition, one Right was issued with each share of common stock that became outstanding after the Record Date. Each Right entitled the registered holder to purchase from the Company one thousandth of one share of the Company’s Series A junior participating preferred stock, par value $0.001 per share, at a purchase price equal to $136.00 per Right, subject to adjustment. On February 12, 2016, the Company entered into an amendment to the Rights Agreement (the Rights Amendment). The Rights Amendment accelerated the expiration of the Rights from the close of business on February 8, 2017 to the close of business on February 16, 2016, and had the effect of terminating the Rights Agreement on that date. Upon the termination of the Rights Agreement, all of the Rights distributed to holders of the Company’s common stock pursuant to the Rights Agreement expired. Stock Repurchase Programs In September 2015, the Board authorized a stock repurchase program, whereby the Company may purchase up to 5.0 million shares of its common stock over a period of up to three years (2015 Repurchase Program). The 2015 Repurchase Program may be carried out at the discretion of a committee comprised of the Company’s Chief Executive Officer and Chief Financial Officer through open market purchases, one or more Rule 10b5-1 trading plans, block trades and in privately negotiated transactions. The total remaining shares authorized for repurchase under the 2015 Repurchase Program approximated 2.9 million shares as of July 2, 2016. The Company expects to fund the 2015 Repurchase Program through its available cash, future cash from operations, funds available under the Restated Credit Facility or other potential sources of capital. The following table provides a summary of the Company’s stock repurchase activities during the three and six months ended July 2, 2016 and July 4, 2015 (in thousands, except per share amounts):
| Three Months Ended |  | Six Months Ended
| July 2, 2016 |  | July 4, 2015 |  | July 2, 2016 |  | July 4, 2015
Shares repurchased | 400 |  |  | 2,126 |  |  | 1,496 |  |  | 2,376 |
Average cost per share | $ | 51.30 |  |  | $ | 34.56 |  |  | $ | 42.39 |  |  | $ | 34.39 |
Value of shares repurchased | $ | 20,519 |  |  | $ | 73,467 |  |  | $ | 63,403 |  |  | $ | 81,628 |
Share-Based Compensation | Stock-Based Compensation Stock-Based Award Activity The number and weighted-average exercise price of options issued and outstanding under all of the Company’s stock option plans are as follows (in thousands, except for exercise prices):
| Six Months Ended July 2, 2016
| Shares |  | Average Exercise Price
Options outstanding, beginning of period | 9,202 |  |  | $ | 25.46 |
Granted | 1,189 |  |  | 38.33 |
Canceled | (120 | ) |  | 28.61 |
Exercised | (965 | ) |  | 19.83 |
Options outstanding, end of period | 9,306 |  |  | $ | 27.64 |
Options exercisable, end of period | 5,358 |  |  | $ | 25.87 |
The number of RSUs issued and outstanding under all of the Company’s stock option plans are as follows (in thousands, except for grant date fair value amounts):
| Six Months Ended July 2, 2016
| Units |  | Weighted Average Grant Date Fair Value
RSUs outstanding, beginning of period | 2,703 |  |  | $ | 41.45 |
Granted | 6 |  |  | 43.09 |
Canceled | — |  |  | — |
Expired | — |  |  | — |
Vested | — |  |  | — |
RSUs outstanding, end of period | 2,709 |  |  | $ | 41.45 |
Approximately 2.7 million of the total RSUs outstanding were awarded to the Company’s Chairman and Chief Executive Officer in connection with the previous amendment and restatement of his employment agreement (see “Employment and Severance Agreements” in Note 14 to these condensed consolidated financial statements for further details). At July 2, 2016, an aggregate of 16.4 million shares of common stock were reserved for future issuance under the Company’s 2007 Stock Incentive Plan (the 2007 Plan) and prior equity incentive plans, of which 4.4 million shares were available for future grant under the 2007 Plan. Valuation of Stock-Based Award Activity The fair value of each RSU award is determined based on the closing price of the Company’s common stock on the grant date. The Black-Scholes option pricing model is used to estimate the fair value of options granted under the Company’s stock-based compensation plans. The range of assumptions used and the resulting weighted-average fair value of options granted at the date of grant were as follows:
| Three Months Ended |  | Six Months Ended
| July 2, 2016 |  | July 4, 2015 |  | July 2, 2016 |  | July 4, 2015
Risk-free interest rate | 1.1% to 1.5% |  | 1.4% to 1.9% |  | 1.1% to 1.9% |  | 1.3% to 1.9%
Expected term (in years) | 5.7 |  | 5.5 |  | 5.7 |  | 5.5
Estimated volatility | 31.7% to 32.8% |  | 32.0% to 34.0% |  | 31.7% to 35.7% |  | 32.0% to 37.4%
Expected dividends | 0% |  | 0% |  | 0% |  | 0%
Weighted-average fair value of options granted | $14.70 |  | $12.45 |  | $13.24 |  | $11.64
The total stock-based compensation expense for the six months ended July 2, 2016 and July 4, 2015 was $6.2 million and $5.4 million, respectively. The aggregate intrinsic value of options is calculated as the positive difference, if any, between the market value of the Company’s common stock on the date of exercise or the respective period end, as appropriate, and the exercise price of the options. The aggregate intrinsic value of options outstanding, with an exercise price less than the closing price of the Company’s common stock, as of July 2, 2016 was $142.5 million. The aggregate intrinsic value of options exercisable, with an exercise price less than the closing price of the Company’s common stock, as of July 2, 2016 was $231.0 million. The aggregate intrinsic value of options exercised during the three and six months ended July 2, 2016 was $20.8 million and $25.3 million, respectively. The unrecognized stock-based compensation expense related to unvested options granted after January 1, 2006 was $30.2 million as of July 2, 2016. The weighted-average remaining contractual term of options outstanding, with an exercise price less than the closing price of the Company’s common stock, as of July 2, 2016 was 3.5 years. The weighted-average remaining contractual term of options exercisable, with an exercise price less than the closing price of the Company’s common stock, as of July 2, 2016 was 4.1 years.

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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=65895303&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=68057994&loc=d3e25284-112666 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 4: 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 5: 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 6: 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 + Details
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- Definition The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SAB Topic 4.E) -URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74567-122707 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21484-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21488-112644 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(e)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(31)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SAB Topic 4.C) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187143-122770 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(30)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21506-112644 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(d)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 11: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 12: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23285-112656 Reference 13: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644 Reference 14: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Preferred Stock -URI http://asc.fasb.org/extlink&oid=6521494 Reference 15: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 16: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21564-112644 + Details
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