Restricted Stock Units

3 Months Ended

Mar. 31, 2014

Restricted Stock Units [Abstract]

Restricted Stock Units

13.          Restricted Stock Units

In 2013, the Company issued 210,000 Restricted Stock Units ("RSUs") to certain employees which vest over three years. By their terms, the RSUs become immediately vested upon the earlier of (i) a change of control and (ii) defined vesting dates, subject to the continuous service with the Company at the applicable vesting event. When vested, the RSUs represents the right to be issued the number of shares of the Company's common stock that is equal to the number of RSUs granted. The fair value of each RSU is estimated based upon the closing price of the Company's common stock on the grant date. Share-based compensation expense related to RSUs and awards is recognized over the requisite service period as adjusted for estimated forfeitures. As of March 31, 2014, the RSUs were unvested.

For the three months ended March 31, 2014, the Company recorded $126,000 in compensation expense for the RSUs. As of March 31, 2014, the unrecognized stock-based compensation expense related to unvested RSUs was approximately $1.26 million, which is expected to be recognized over a weighted average period of approximately 2.5 years.