|3 Months Ended|
Mar. 31, 2019
|Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]|
Pursuant to the terms of the Company’s 2014 Equity Incentive Plan, or 2014 Plan, on January 1, 2019 and 2018, the Company automatically added 1,918,879 and 1,158,866 shares to the total number shares of common stock available for future issuance under the 2014 Plan, respectively. As of March 31, 2019, there were 372,312 shares of common stock available for future issuance under the 2014 Plan.
The activity for the Company’s 2009 Stock Option Plan, 2014 Plan and 2015 Inducement Plan, or 2015 Plan, for the three months ended March 31, 2019, is summarized as follows:
Restricted stock unit ("RSU") activity under the 2014 Plan for the three months ended March 31, 2019, is summarized as follows:
The fair value of RSUs is based on the market price of the Company's common stock on the date of grant. RSUs generally vest 25% annually over a four-year period from the date of grant. Upon vesting, the RSUs are net share settled to cover the required withholding tax with the remaining shares issued to the holder. The Company recognizes compensation expense for such awards ratably over the corresponding vesting period.
The compensation cost that has been charged against income for stock awards under the 2009 Stock Option Plan, the 2014 Plan, the 2015 Plan, and the Company’s 2014 Employee Stock Purchase Plan, or ESPP, was $0.5 million and $0.4 million for the three months ended March 31, 2019 and 2018, respectively. The total income tax benefit recognized in the statements of operations for share-based compensation arrangements was zero for the three months ended March 31, 2019 and 2018. Cash received from options exercised was zero for the three months ended March 31, 2019, and 2018.
Stock-based compensation expense related to stock options is included in the following line items in the accompanying statements of operations (in thousands):
The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.
Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef