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Stock-Based Awards (Tables)
 6 Months Ended
Jun. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Summary of Unrecognized Stock-Based Compensation Expense and Average Remaining Vesting Period

A summary of unrecognized stock-based compensation expense and average remaining vesting period is as follows:

 

     June 30, 2017  
     Unrecognized Stock-
Based
Compensation		      Average
Remaining
Vesting Period		  

Employees and directors

    $ 20,999        1.80  
Summary of Stock Options, Restricted Stock and Restricted Stock Unit Activity

A summary of stock options, restricted stock and restricted stock unit activity for the three months ended June 30, 2017 is as follows:

 

     Stock
Options		      Restricted
Stock
Awards		      Restricted
Stock
Units		  

Balance at April 1, 2017

      1,363,247        2,105,743        3,759  

Granted

      —          229,908        —    

Exercised/vested

      (37,300 )       (87,480 )       —    

Forfeitures

      —          (6,538 )       (1,483 ) 
  

 

 

     

 

 

     

 

 

  

Balance at June 30, 2017

      1,325,947        2,241,633        2,276