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Stock-Based Compensation (Policies)
6 Months Ended
Jun. 30, 2017
Share-based Compensation [Abstract]  
Compensation-Stock Based Compensation
The Company recognizes stock-based compensation in accordance with the provisions of ASC Topic 718, Compensation--Stock Compensation. Stock-based compensation expense, excluding compensation charges related to our employee stock purchase plan, or the ESPP, was $849 and $841 for the three months ended June 30, 2017 and 2016, respectively, and $1,792 and $1,881 for the six months ended June 30, 2017 and 2016, respectively. As of June 30, 2017, there was $1,794 of total unrecognized compensation expense related to stock options, which is expected to be recognized over a weighted-average period of 3.13 years. As of June 30, 2017, there was $4,913 of total unrecognized compensation expense related to restricted stock awards, which is expected to be recognized over a weighted-average period of 2.68 years.