Annual report pursuant to Section 13 and 15(d)

Stock Options (Details 2)

v2.4.0.8
Stock Options (Details 2) (Stock options, USD $)
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Stock options
    
Non-vested share-based payment activity with employees    
Number of non-vested options outstanding at the beginning of the period (in shares) 858,115 1,263,205
Number of non-vested options granted (in shares) 261,000 267,576
Number of options vested (in shares) (385,076) (317,734)
Number of non-vested options forfeited (in shares) (58,843) (354,932)
Number of non-vested options outstanding at the end of the period (in shares) 675,196 858,115
Weighted average grant-date fair value of non-vested options outstanding at the beginning of the period (in dollars per share) $ 2.36 $ 1.41
Weighted average grant-date fair value of options granted (in dollars per share) $ 3.72 $ 2.99
Weighted average grant-date fair value of options vested (in dollars per share) $ (2.22) $ (1.92)
Weighted average grant-date fair value of non-vested options forfeited (in dollars per share) $ (3.48) $ (2.48)
Weighted average grant-date fair value of non-vested options outstanding at the end of the period (in dollars per share) $ 2.88 $ 2.36