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Stock Plans (Tables) | 12 Months Ended
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Dec. 31, 2016
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions | The fair value of each of these option awards is estimated on the date of grant using the Black-Scholes option pricing model with the weighted average assumptions noted in the following table. Expected volatility is based on the historical volatility of the Company’s common stock. Since the Company’s option exercise history is limited, it has estimated the expected term of these option grants to be the midpoint between the vesting period and the contractual term of each award. The risk-free interest rate is based on the U.S. Treasury yield curve in effect on the date of grant which most closely corresponds to the expected term of the Time-Vesting Options. The dividend yield is based on the Company’s historic average dividend yield. The Company did not grant any Time-Vesting Options in fiscal 2014.
|  | December 31, 2016 |  | January 2, 2016
Dividend yield |  | 0.0% |  | 0.0%
Volatility |  | 49.6% - 51.4% |  | 41.0%
Risk-free interest rate |  | 1.24% - 2.26% |  | 1.84% - 1.89%
Expected term (years) |  | 6.0 |  | 6.0
Schedule of Share-based Compensation, Stock Options, Activity | A summary of all option activity under the Stock Plans and the Winfrey Option (see Note 4 for additional disclosure regarding the Winfrey Option) for the fiscal year ended December 31, 2016 is presented below:
|  | Shares |  |  | Weighted- Average Exercise Price |  |  | Weighted- Average Remaining Contractual Life (Yrs.) |  |  | Aggregate Intrinsic Value |
Outstanding at January 2, 2016 |  |  | 5,330 |  |  | $ | 11.79 |  |  |  |  |  |  |  |  |
Granted |  |  | 118 |  |  | $ | 11.79 |  |  |  |  |  |  |  |  |
Exercised |  |  | (20 | ) |  | $ | 5.25 |  |  |  |  |  |  |  |  |
Cancelled |  |  | (315 | ) |  | $ | 12.71 |  |  |  |  |  |  |  |  |
Outstanding at December 31, 2016 |  |  | 5,113 |  |  | $ | 11.76 |  |  |  | 8.3 |  |  | $ | 20,293 |
Exercisable at December 31, 2016 |  |  | 4,490 |  |  | $ | 12.49 |  |  |  | 8.2 |  |  | $ | 17,135 |
Schedule of Share-based Compensation, Restricted Stock Units Award Activity | A summary of RSU activity under the Stock Plans for the fiscal year ended December 31, 2016 is presented below:
|  | Shares |  |  | Weighted-Average Grant-Date Fair Value |
Outstanding at January 2, 2016 |  |  | 1,366 |  |  | $ | 14.66 |
Granted |  |  | 758 |  |  | $ | 12.68 |
Vested |  |  | (475 | ) |  | $ | 10.84 |
Forfeited |  |  | (511 | ) |  | $ | 16.41 |
Outstanding at December 31, 2016 |  |  | 1,138 |  |  | $ | 14.15 |
Schedule of Share-based Compensation, Performance Stock Units Award Activity | A summary of PSU activity under the 2014 Plan for the fiscal year ended December 31, 2016 is presented below:
|  | Shares |  |  | Weighted-Average Grant- Date Fair Value |
Outstanding at January 2, 2016 |  |  | 0 |  |  | $ | 0 |
Granted |  |  | 290 |  |  | $ | 13.19 |
Vested |  |  | (1 | ) |  | $ | 13.20 |
Forfeited |  |  | (91 | ) |  | $ | 13.20 |
Outstanding at December 31, 2016 |  |  | 198 |  |  | $ | 13.19 |
Special Performance Based Options Awards |
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions | The expected term represented the period from the grant date to the end of the five year performance period. Compensation expense on T&P Options was recognized ratably over the three year required service period as this period was longer than the derived service period calculated by the Monte Carlo simulation.
|  | January 2, 2016 |  | January 3, 2015
Dividend yield |  | 0.0% |  | 0.0%
Volatility |  | 40.5% |  | 37.8%
Risk-free interest rate |  | 1.6% |  | 1.4% -1.8%
Expected term (years) |  | 5.0 |  | 5.0

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- Definition Tabular disclosure of the changes in outstanding nonvested performance-based units. + 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)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited 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 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 stock options, including, but not limited to: (a) expected term of share options and similar instruments, (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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