v3.7.0.1

STOCK-BASED COMPENSATION (Tables) | 3 Months Ended
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Mar. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Summary of total shares available for grant | The following table summarizes the total number of shares available for grant under the 2014 Plan as of March 31, 2017:
| Shares Available for Grant
Balance, December 31, 2016 | 5,116,753 |
Authorized | 2,612,263 |
Options granted | — |
Options canceled | 542,265 |
Awards granted | (804,691 | )
Awards canceled | 847,391 |
Balance, March 31, 2017 | 8,313,981 |
Summary of shares available for grant and outstanding stock option activity | The following table summarizes the information about outstanding stock option activity:
| Options Outstanding
| Number of Shares Underlying Outstanding Options |  | Weighted Average Exercise Price |  | Weighted Average Remaining Contractual Term (Years) |  | Aggregate Intrinsic Value
|  |  |  |  |  |  | (in thousands)
Balance, December 31, 2016 | 6,219,774 |  |  | $ | 6.15 |  |  | 6.42 |  | $ | 6,056 |
Options granted | — |  |  | — |  |  |  |  |
Options exercised | (124,144 | ) |  | 1.66 |  |  |  |  |
Options canceled | (542,265 | ) |  | 6.95 |  |  |  |  |
Balance, March 31, 2017 | 5,553,365 |  |  | $ | 6.17 |  |  | 5.96 |  | $ | 3,547 |
Options exercisable, March 31, 2017 | 4,098,387 |  |  | $ | 5.84 |  |  | 5.15 |  | $ | 3,527 |
Summary of RSU activity and related information | summary of the Company’s RSU activity and related information for the three months ended March 31, 2017:
| Restricted Stock Units Outstanding
| Shares |  | Weighted Average Grant Date Fair Value Per Share
Balance, December 31, 2016 | 4,365,670 |  |  | $ | 6.23 |
Awards granted | 804,691 |  |  | 5.00 |
Awards vested | (481,546 | ) |  | 5.87 |
Awards canceled | (777,023 | ) |  | 6.24 |
Balance, March 31, 2017 | 3,911,792 |  |  | $ | 6.03 |
Summary of the assumptions related to stock options | Weighted-average assumptions for the Company's stock options granted were as follows:
| Three Months Ended March 31,
| 2017 |  | 2016
Stock options: |  |  |
Expected term (in years) | N/A |  | 5.89 |
Expected volatility | N/A |  | 55.64 | %
Risk free interest rate | N/A |  | 1.52 | %
Weighted average assumptions used to value employee stock purchase rights | Weighted average assumptions used to value employee stock purchase rights under the Black-Scholes model were as follows:
| Three Months Ended March 31,
| 2017 |  | 2016
ESPP purchase rights: |  |  |
Expected term (in years) | 0.50 - 1.00 |  | 0.50 - 2.00
Expected volatility | 34% - 39% |  | 35% - 55%
Risk free interest rate | 0.60% - 0.82% |  | 0.07% - 0.51%
Schedule of stock-based awards granted in the consolidated statements of operations | The total stock-based compensation the Company recognized for stock-based awards in the consolidated statements of operations is as follows:
| Three Months Ended March 31,
| 2017 |  | 2016
| (in thousands)
Cost of revenue | $ | 271 |  |  | $ | 272 |
Research and development | 688 |  |  | 1,345 |
Sales and marketing | 1,294 |  |  | 1,768 |
General and administrative | 1,300 |  |  | 1,511 |
Total stock-based compensation | $ | 3,553 |  |  | $ | 4,896 |
The following table presents stock-based compensation expense by award-type:
| Three Months Ended March 31,
| 2017 |  | 2016
| (in thousands)
Stock Options | $ | 883 |  |  | $ | 1,146 |
Restricted Stock Units | 2,270 |  |  | 3,147 |
Employee Stock Purchase Plan | 400 |  |  | 603 |
Total stock-based compensation | $ | 3,553 |  |  | $ | 4,896 |

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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 2 -URI http://asc.fasb.org/extlink&oid=6415400&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 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 + 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 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=6415400&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=6415400&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 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F + Details
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- Definition Tabular disclosure of the changes in outstanding nonvested restricted stock 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 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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- 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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