v2.4.0.6
Long-Term Compensation (Details 1) (Restricted Stock [Member], USD $)
6 Months Ended
Jun. 30, 2012
Restricted Stock [Member]
 
Non-vested share options  
Number of Shares, Beginning balance 1,192,982
Granted 5,000
Vested (500,168)
Forfeited (1,797)
Number of Shares, Ending balance 696,017
Weighted Average Grant-Date Fair Value, Ending balance $ 34.03