Stockholders' Equity - Summary of Stock-based Compensation Expense Recognized (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2016 |
Sep. 30, 2015 |
Sep. 30, 2016 |
Sep. 30, 2015 |
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| Stock-based compensation expense by type of award: | ||||
| Stock-based compensation expense | $ 1,953 | $ 1,016 | $ 5,404 | $ 2,343 |
| Employee Stock Purchase Plan | ||||
| Stock-based compensation expense by type of award: | ||||
| Stock-based compensation expense | 95 | 75 | 341 | 265 |
| Stock options | ||||
| Stock-based compensation expense by type of award: | ||||
| Stock-based compensation expense | $ 1,858 | $ 941 | $ 5,063 | $ 2,078 |
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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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