Quarterly report pursuant to Section 13 or 15(d)

Stock Based Compensation (Details)

v2.4.0.6
Stock Based Compensation (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Summary of compensation expense and stock award activity        
Stock-based compensation expense $ 1,620 $ 1,388 $ 3,273 $ 3,101
Non-vested shares granted 20,500 13,250 369,750 357,000
Exercise of stock options, shares 10,600 19,550 79,300 116,600
Performance based awards [Member]
       
Summary of compensation expense and stock award activity        
Non-vested shares granted 0 0 56,250 56,250
Restricted Stock Awards [Member]
       
Summary of compensation expense and stock award activity        
Restricted stock awards vested (includes performance based awards) 3,400 2,050 197,016 154,117