Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity and Stock Based Compensation - Restricted Stock (Details)

v3.3.1.900
Stockholders' Equity and Stock Based Compensation - Restricted Stock (Details) - $ / shares
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Number of Options      
Canceled (in shares)   15,000  
Exercisable at the end of the period (in shares)   50,640.00  
Weighted Average Exercise Price      
Canceled (in dollars per share)   $ 3.04  
Options      
Number of Options      
Outstanding at the beginning of the period (in shares) 50,640 285,640 310,640
Canceled (in shares) 6,000    
Exercised (in shares) 44,640 220,000 25,000
Outstanding at the end of the period (in shares)   50,640 285,640
Weighted Average Exercise Price      
Outstanding at the beginning of the period (in dollars per share) $ 12.85 $ 8.71 $ 8.65
Canceled (in dollars per share) 12.85    
Exercised (in dollars per share) $ 12.85 8.14 8.03
Outstanding at the end of the period (in dollars per share)   $ 12.85 $ 8.71
Aggregate Intrinsic Value      
Options reserved for future issuance (in shares) 0