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Stock-Based Compensation (Tables) | 12 Months Ended
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Dec. 29, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs | The impact on the Company's results of operations of recording stock-based compensation expense for fiscal years 2013, 2012 and 2011 was as follows (in thousands):
| Fiscal Years
| 2013 |  | 2012 |  | 2011
Cost of revenue | $ | 232 |  |  | $ | 179 |  |  | $ | 131 |
Research and development | 666 |  |  | 455 |  |  | 458 |
Selling, general and administrative | 1,081 |  |  | 1,369 |  |  | 1,087 |
Total costs and expenses | $ | 1,979 |  |  | $ | 2,003 |  |  | $ | 1,676 |
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions | The following weighted average assumptions are included in the estimated fair value calculations for stock option grants:
| Fiscal Years
| 2013 |  | 2012 |  | 2011
Expected term (years) | 6.1 |  |  | 6.3 |  |  | 5.7 |
Risk-free interest rate | 1.74 | % |  | 0.98 | % |  | 1.16 | %
Expected volatility | 59 | % |  | 61 | % |  | 61 | %
Expected dividend | — |  |  | — |  |  | — |
Schedule of Share-based Compensation, Activity | The following table summarizes the shares available for grant under the 2009 Plan for 2013:
| Shares Available for Grant
| (in thousands)
Balance at December 30, 2012 | 2,920 |
Options granted | (716 | )
Options forfeited or expired | 269 |
RSUs granted | (215 | )
PRSU's granted | (30 | )
PRSU's forfeited or expired | 25 |
Balance at December 29, 2013 | 2,253 |
Schedule of Share-based Compensation, Stock Options, Activity | The following table summarizes stock options outstanding and stock option activity under the 1999 Plan and the 2009 Plan, and the related weighted average exercise price, for 2013, 2012 and 2011:
| Number of Shares |  | Weighted Average Exercise Price |  | Weighted Average Remaining Term |  | Aggregate Intrinsic Value
| (in thousands) |  |  |  | (in years) |  | (in thousands)
Balance outstanding at January 2, 2011 | 8,069 |  |  | $ | 2.74 |  |  |  |  |
Granted | 876 |  |  | 2.81 |  |  |  |  |
Forfeited or expired | (803 | ) |  | 4.51 |  |  |  |  |
Exercised | (659 | ) |  | 2.46 |  |  |  |  |
Balance outstanding at January 1, 2012 | 7,483 |  |  | 2.58 |  |  |  |  |
Granted | 791 |  |  | 2.43 |  |  |  |  |
Forfeited or expired | (935 | ) |  | 3.04 |  |  |  |  |
Exercised | (379 | ) |  | 1.87 |  |  |  |  |
Balance outstanding at December 30, 2012 | 6,960 |  |  | 2.55 |  |  |  |  |
Granted | 716 |  |  | 3.26 |  |  |  |  |
Forfeited or expired | (269 | ) |  | 2.65 |  |  |  |  |
Exercised | (165 | ) |  | 2.21 |  |  |  |  |
Balance outstanding at December 29, 2013 | 7,242 |  |  | $ | 2.62 |  |  | 5.75 |  | $ | 9,260 |
Exercisable at December 29, 2013 | 5,648 |  |  | $ | 2.54 |  |  | 4.90 |  | $ | 7,760 |
Vested and expected to vest at December 29, 2013 | 7,018 |  |  | $ | 2.61 |  |  | 5.64 |  | $ | 9,073 |
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range | Significant exercise price ranges of options outstanding, related weighted average exercise prices and contractual life information at the end of 2013 were as follows:
| Options Outstanding |  | Options Exercisable
Range of Exercise Prices | Options Outstanding |  | Weighted Average Remaining Contractual Life |  | Weighted Average Exercise Price |  | Options Vested and Exercisable |  | Weighted Average Exercise Price
| (in thousands) |  | (in years) |  |  |  | (in thousands) |  |
$0.78 - $0.94 | 634 |  |  | 4.82 |  | $ | 0.90 |  |  | 634 |  |  | $ | 0.90 |
1.63 - 1.63 | 1,155 |  |  | 5.15 |  | 1.63 |  |  | 1,155 |  |  | 1.63 |
2.06 - 2.75 | 949 |  |  | 5.90 |  | 2.42 |  |  | 552 |  |  | 2.53 |
2.76 - 2.76 | 11 |  |  | 8.11 |  | 2.76 |  |  | 4 |  |  | 2.76 |
2.78 - 2.78 | 2,094 |  |  | 6.90 |  | 2.78 |  |  | 1,593 |  |  | 2.78 |
2.82 - 3.02 | 839 |  |  | 2.83 |  | 2.96 |  |  | 810 |  |  | 2.96 |
3.04 - 3.48 | 801 |  |  | 8.38 |  | 3.39 |  |  | 240 |  |  | 3.36 |
3.54 - 4.17 | 681 |  |  | 4.76 |  | 4.07 |  |  | 583 |  |  | 4.15 |
4.36- 4.36 | 35 |  |  | 1.42 |  | 4.36 |  |  | 35 |  |  | 4.36 |
5.94 - 5.94 | 43 |  |  | 2.33 |  | 5.94 |  |  | 43 |  |  | 5.94 |
$0.78 - $5.94 | 7,242 |  |  | 5.75 |  | $ | 2.62 |  |  | 5,649 |  |  | $ | 2.54 |
Schedule of Share-based compensation related to RSU | The stock-based compensation related to grants of vested RSUs was $590,000 in 2013. In 2013, the Company also granted PRSUs, to new employees and the stock-based compensation related to PRSUs was $64,000.
| RSUs & PRSUs Outstanding
| Number of Shares |  | Weighted Average Grant Date Fair Value
| (in thousands) |  |
Nonvested at December 30, 2012 | 40 |  |  | $ | 2.30 |
Granted | 245 |  |  | 3.33 |
Vested | (35 | ) |  | 3.28 |
Forfeited | (25 | ) |  | — |
Nonvested at December 29, 2013 | 225 |  |  | $ | 3.17 |
Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumption | The fair value of rights issued pursuant to the Company's ESPP was estimated on the commencement date of each offering period using the following weighted average assumptions:
| Fiscal Years
| 2013 |  | 2012 |  | 2011
Expected life (months) | 6.1 |  |  | 6.00 |  |  | 6.10 |
Risk-free interest rate | 0.09 | % |  | 0.14 | % |  | 0.08 | %
Volatility | 39 | % |  | 56 | % |  | 56 | %
Dividend yield | — |  |  | — |  |  | — |

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- 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. + References Reference 1: 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 2: 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 + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 2: 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.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of share-based compensation plans that may be presented in a single table for outstanding, vested and expected to vest, and exercisable awards. The information that may be disclosed in this table may include, but is not limited to, number of shares, weighted average exercise price, weighted average remaining contractual life, and aggregate intrinsic value. + References No definition available. + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of employee stock purchase plans, including, but not limited to: (a) expected term, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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