Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation (Details 5)

v2.4.0.6
Stock-Based Compensation (Details 5) (Restricted Stock [Member], USD $)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Restricted Stock [Member]
   
Summary of unvested restricted stock awards activity    
Number of Shares, Balance Beginning 73,820   
Number of Shares, Granted 714,934 77,224
Number of Shares, Vested (24,568)   
Number of Shares, Expired/cancelled (1,064)  
Number of Shares, Forfeited (4,132) (3,404)
Number of Shares, Balance, Ending 758,990 73,820
Weighted-Average Grant Date Fair Value per share, Balance Beginning $ 12.37   
Weighted-Average Grant Date Fair Value per share, Granted $ 12.50 $ 12.38
Weighted-Average Grant Date Fair Value Per Share, Vested      
Weighted-Average Grant Date Fair Value Per Share, Expired/cancelled $ 12.45  
Weighted-Average Grant Date Fair Value per share, Forfeited $ 12.49 $ 12.55
Weighted-Average Grant Date Fair value per share, Balance Ending $ 12.49 $ 12.37