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Stockholders' Equity (Tables) | 12 Months Ended
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Dec. 29, 2018
Equity [Abstract] |
Share Activity and Total Number of Share Available for Grant | The following table represents the shares activity and the total number of shares available for grant under the Incentive Plan:
|  |  | Shares Available for Grant |
Balances as of December 31, 2016 |  |  |  | 162,155 |
Additional shares reserved |  |  |  | 650,000 |
Options granted |  |  |  | (524,400 | )
Restricted stock granted |  |  |  | (212,538 | )
Options cancelled |  |  |  | 73,694 |
Awards cancelled |  |  |  | 48,059 |
Balances as of December 30, 2017 |  |  |  | 196,970 |
Additional shares reserved |  |  |  | 1,000,000 |
Options granted |  |  |  | (178,435 | )
Restricted stock granted |  |  |  | (628,125 | )
Options cancelled |  |  |  | 166,798 |
Awards cancelled |  |  |  | 143,754 |
Balances as of December 29, 2018 |  |  |  | 700,962 |
Stock-Based Compensation Expenses | The following table shows stock-based compensation expenses by functional area in the consolidated statements of operations for 2018 and 2017(in thousands):
|  | FY 2018 |  |  | FY 2017 |
|  | Year Ended |  |  | Year Ended |
|  | December 29, 2018 |  |  | December 30, 2017 |
Cost of revenues |  | $ | 47 |  |  | $ | 152 |
Research and development |  |  | 129 |  |  |  | 354 |
Sales and marketing |  |  | 448 |  |  |  | 307 |
General and administrative |  |  | 1,179 |  |  |  | 1,109 |
Total stock-based compensation expense |  | $ | 1,803 |  |  | $ | 1,922 |
Summary of Activity in Stock Option Plan | Summary of Stock Options The following table summarizes information regarding activity in our stock option plans during the fiscal years ended 2018 and 2017 (in thousands except share and per share data):
|  | Outstanding Options |
|  | Number of Shares |  |  | Weighted Average Exercise Price |
Balances as of December 31, 2016 |  |  | 470,985 |  |  |  | 8.69 |
Options granted |  |  | 524,400 |  |  |  | 9.90 |
Options exercised |  |  | (64,380 | ) |  |  | 5.86 |
Options cancelled or forfeited |  |  | (73,694 | ) |  |  | 10.47 |
Balances as of December 30, 2017 |  |  | 857,311 |  |  | $ | 9.49 |
Options granted |  |  | 178,435 |  |  |  | 6.00 |
Options exercised |  |  | (24,050 | ) |  |  | 4.09 |
Options cancelled or forfeited |  |  | (166,798 | ) |  |  | 9.85 |
Balances as of December 29, 2018 |  |  | 844,898 |  |  | $ | 8.84 |
Stock Options Outstanding and Exercisable | The following table summarizes information with respect to stock options outstanding and exercisable as of December 29, 2018:
|  | Options Outstanding |  |  | Options Vested and Exercisable |
Range of Exercise Prices |  | Number of Shares Outstanding |  |  | Weighted Average Remaining Contractual Life (years) |  |  | Weighted Average Exercise Price |  |  | Number of Shares Exercisable |  |  | Weighted Average Exercise Price |
$3.49 - $5.69 |  |  | 99,341 |  |  |  | 4.77 |  |  | $ | 5.03 |  |  |  | 37,966 |  |  | $ | 4.37 |
$5.81 - $6.00 |  |  | 89,926 |  |  |  | 5.28 |  |  | $ | 5.93 |  |  |  | 25,390 |  |  | $ | 5.91 |
$6.30 - $8.47 |  |  | 85,912 |  |  |  | 3.85 |  |  | $ | 7.24 |  |  |  | 50,582 |  |  | $ | 7.23 |
$8.58 - $9.05 |  |  | 85,874 |  |  |  | 4.11 |  |  | $ | 8.83 |  |  |  | 55,959 |  |  | $ | 8.71 |
$9.34 - $9.40 |  |  | 11,875 |  |  |  | 1.40 |  |  | $ | 9.36 |  |  |  | 11,875 |  |  | $ | 9.36 |
$9.54 - $9.54 |  |  | 324,854 |  |  |  | 5.08 |  |  | $ | 9.54 |  |  |  | 135,188 |  |  | $ | 9.54 |
$10.14 - $11.16 |  |  | 83,853 |  |  |  | 3.81 |  |  | $ | 10.80 |  |  |  | 65,004 |  |  | $ | 10.75 |
$12.85 - $12.85 |  |  | 15,394 |  |  |  | 4.70 |  |  | $ | 12.85 |  |  |  | 8,520 |  |  | $ | 12.85 |
$14.61 - $14.61 |  |  | 25,000 |  |  |  | 5.19 |  |  | $ | 14.61 |  |  |  | 10,939 |  |  | $ | 14.61 |
$16.29 - $16.29 |  |  | 22,869 |  |  |  | 3.18 |  |  | $ | 16.29 |  |  |  | 16,893 |  |  | $ | 16.29 |
$3.49 - $16.29 |  |  | 844,898 |  |  |  | 4.61 |  |  | $ | 8.84 |  |  |  | 418,316 |  |  | $ | 9.12 |
Weighted Average Assumptions for Fair Value of Options Granted | The determination of the fair value of options granted is computed using the Black-Scholes option pricing model with the following weighted average assumptions:
|  | Employee Stock Option Plan |
|  | FY 2018 |  |  | FY 2017 |
Average risk free interest rate |  |  | 2.69 | % |  |  | 1.83 | %
Expected life (in years) |  | 4.55 years |  |  | 4.55 years |
Dividend yield |  |  | — |  |  |  | — |
Average volatility |  |  | 40.9 | % |  |  | 41.8 | %
Stock Options Outstanding, Exercisable and Expected to Vest | Information regarding stock options outstanding, exercisable and expected to vest as of December 29, 2018 is summarized below:
|  | Number of |  |  | Weighted Average |  |  | Weighted Average Remaining Contractual |  |  | Aggregate Intrinsic Value |
|  | Shares |  |  | Exercise Price |  |  | Life (years) |  |  | (thousands) |
Options outstanding |  |  | 844,898 |  |  | $ | 8.84 |  |  |  | 4.61 |  |  | $ | 12 |
Options vested and expected to vest |  |  | 797,921 |  |  | $ | 8.87 |  |  |  | 4.53 |  |  | $ | 12 |
Options exercisable |  |  | 418,316 |  |  | $ | 9.12 |  |  |  | 3.38 |  |  | $ | 12 |
Restricted Stock Units Outstanding, Vested and Expected to Vest | Information regarding the restricted stock units outstanding, vested and expected to vest as of December 29, 2018 is summarized below:
|  | Number of Shares |  |  | Weighted Average Remaining Contractual Life (years) |  |  | Aggregate Intrinsic Value (thousands) |
Restricted stock units outstanding |  |  | 597,121 |  |  |  | 1.44 |  |  | $ | 2,657 |
Restricted stock units vested and expected to vest |  |  | 492,239 |  |  |  | 1.33 |  |  | $ | 2,190 |
Restricted Stock Units and Awards | Information regarding the RSU activity during the years ended December 29, 2018 and December 30, 2017 is summarized below:
|  | Number of Shares |  |  | Weighted Average Grant Date Fair Value |
Outstanding as of December 31, 2016 |  |  | 335,805 |  |  | $ | 11.20 |
Restricted stock units granted |  |  | 137,391 |  |  | $ | 9.88 |
Restricted stock units released |  |  | (80,009 | ) |  | $ | 12.37 |
Restricted stock units forfeited |  |  | (32,039 | ) |  | $ | 11.44 |
Outstanding as of December 30, 2017 |  |  | 361,148 |  |  | $ | 10.42 |
Restricted stock units granted |  |  | 418,750 |  |  | $ | 7.79 |
Restricted stock units released |  |  | (86,941 | ) |  | $ | 7.38 |
Restricted stock units forfeited |  |  | (95,836 | ) |  | $ | 10.01 |
Outstanding as of December 29, 2018 |  |  | 597,121 |  |  | $ | 9.08 |
Information regarding the restricted stock awards activity during the year ended December 29, 2018 and December 30, 2017 is summarized below:
|  | Number of Shares |  |  | Weighted Average Grant Date Fair Value |
Outstanding as of December 31, 2016 |  |  | 1,289 |  |  | $ | 15.51 |
Restricted stock awards granted |  |  | 4,301 |  |  | $ | 9.30 |
Restricted stock awards released |  |  | (1,289 | ) |  | $ | 15.51 |
Outstanding as of December 30, 2017 |  |  | 4,301 |  |  | $ | 9.30 |
Restricted stock awards granted |  |  | — |  |  |  | — |
Restricted stock awards released |  |  | (4,301 | ) |  | $ | 9.30 |
Outstanding as of December 29, 2018 |  |  | — |  |  |  | — |

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5047-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109197908&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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -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=115993241&loc=d3e301413-122809 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5047-113901 + Details
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- Definition Tabular disclosure of number, weighted-average exercise price or conversion ratio, aggregate intrinsic value, and weighted-average remaining contractual term for outstanding restricted stock units that are fully vested and expected to vest. Includes, but is not limited to, unvested restricted stock units for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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