v3.8.0.1

Stockholders’ Equity (Tables) | 9 Months Ended
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Sep. 30, 2017
Equity [Abstract] |
Summary of Stock-based Compensation in Accompanying Consolidated Statements of Operations | The following table summarizes stock-based compensation in our accompanying condensed consolidated statements of operations (in thousands):
| Three Months Ended |  | Nine Months Ended
| September 30, 2017 |  | September 24, 2016 |  | September 30, 2017 |  | September 24, 2016
Cost of revenue | $ | 117 |  |  | $ | 79 |  |  | $ | 314 |  |  | $ | 233 |
Selling and marketing | 287 |  |  | 232 |  |  | 828 |  |  | 646 |
Research and development | 487 |  |  | 284 |  |  | 1,138 |  |  | 793 |
General and administrative | 2,144 |  |  | 1,156 |  |  | 4,306 |  |  | 3,093 |
Loss (income) from discontinued operations | — |  |  | — |  |  | — |  |  | 8 |
Total stock-based compensation | $ | 3,035 |  |  | $ | 1,751 |  |  | $ | 6,586 |  |  | $ | 4,773 |
Assumptions Used to Estimate Fair Value of Options Granted | The following table presents the assumptions used to estimate the fair value of options granted during the periods presented:
| Nine Months Ended
| September 30, 2017 |  | September 24, 2016
Risk-free interest rate | 1.86% - 2.18% |  | 1.19 - 1.63 %
Expected term (years) | 6.25 |  | 6.25
Volatility | 32.0% - 33.4% |  | 33.8% - 38.2%
Expected dividend yield | — |  | —
Summary of Stock Option and RSU Activity | A summary of stock option, RSU, PSU, and MSU activity for the nine months ended September 30, 2017 was as follows (in thousands for shares and intrinsic value):
|  |  |  |  |  |  |  |  | Restricted Stock Units
| Shares |  | Weighted-Average Remaining Contractual Term (Years) |  | Weighted-Average Exercise Price |  | Aggregate Intrinsic Value |  | Shares |  | Weighted-Average Grant Date Fair Value
Outstanding as of December 31, 2016 | 4,312 |  |  | 6.45 |  | $ | 6.64 |  |  | $ | 13,042 |  |  | 1,780 |  |  | $ | 7.08 |
Granted(1) | 974 |  |  |  |  | $ | 12.82 |  |  |  |  | 1,085 |  |  | $ | 11.59 |
Settled (RSUs and PSUs) | — |  |  |  |  | — |  |  |  |  | (421 | ) |  | $ | 7.59 |
Exercised | (583 | ) |  |  |  | $ | 4.47 |  |  |  |  | — |  |  | — |
Canceled and forfeited | (215 | ) |  |  |  | $ | 12.72 |  |  |  |  | (541 | ) |  | $ | 7.08 |
Outstanding as of September 30, 2017 | 4,488 |  |  | 6.69 |  | $ | 7.97 |  |  | $ | 36,960 |  |  | 1,903 |  |  | $ | 9.54 |
Vested and exercisable as of September 30, 2017 | 2,769 |  |  | 5.29 |  | $ | 6.64 |  |  | $ | 26,869 |  |  | N/A |  | N/A
____________________________ (1) For RSUs, includes time-based, performance-based, and market-based restricted stock units
Schedule of Stock by Class | As of September 30, 2017, we had reserved the following shares of common stock for future issuance in connection with the following (in thousands):
| September 30, 2017
Options issued and outstanding | 4,488 |
Restricted stock units issued and outstanding | 1,903 |
Common stock available for stock-based award grants under incentive award plans | 2,490 |
Common stock available for conversion of Series A Redeemable Convertible Preferred Stock | 4,724 |
Total | 13,605 |

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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 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 2: 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=96867065&loc=d3e5047-113901 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.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 + Details
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- Definition Tabular disclosure for share-based compensation plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + 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=96867065&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=96867065&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=96867065&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of an entity's stock, including par or stated value per share, number and dollar amount of share subscriptions, shares authorized, shares issued, shares outstanding, number and dollar amount of shares held in an employee trust, dividend per share, total dividends, share conversion features, par value plus additional paid in capital, the value of treasury stock and other information necessary to a fair presentation, and EPS information. Stock by class includes common, convertible, and preferred stocks which are not redeemable or redeemable solely at the option of the issuer. Includes preferred stock with redemption features that are solely within the control of the issuer and mandatorily redeemable stock if redemption is required to occur only upon liquidation or termination of the reporting entity. If more than one issue is outstanding, state the title of each issue and the corresponding dollar amount; dollar amount of any shares subscribed but unissued and the deduction of subscriptions receivable there from; number of shares authorized, issued, and outstanding. + References Reference 1: 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=84159872&loc=d3e21506-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=65877616&loc=d3e177068-122764 Reference 3: 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 4: 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 5: 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 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21553-112644 Reference 7: 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=84159872&loc=d3e21475-112644 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(28)) -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 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=65888546&loc=d3e21300-112643 Reference 10: 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(27)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 11: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21521-112644 Reference 12: 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=84159872&loc=d3e21484-112644 Reference 13: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21538-112644 Reference 14: 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=84159872&loc=d3e21488-112644 + Details
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