v2.4.0.6
Consolidated Statements of Shareholders' Equity (USD $)
In Thousands, except Share data
Total
Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Treasury Stock [Member]
Comprehensive Income [Member]
Beginning balance at Dec. 31, 2008 $ 87,660 $ 659 $ 471,468 $ 159,515 $ 245 $ (544,227)  
Beginning balance Treasury Stock, Shares at Dec. 31, 2008           22,559,000  
Beginning balance in Shares at Dec. 31, 2008   65,883,000          
NET INCOME 87,256     87,256     87,256
Net change in unrealized gain on short-term investments 32       32   32
Total Comprehensive Income             87,288
Exercise of Common Stock options, shares   730,000          
Exercise of Common Stock options 7,635 7 7,628        
Issuance of Common Stock During Period, Shares, Under Profit Sharing Plan   26,000          
Stock Issued During Period, Value, Under Profit Sharing Plan 545   545        
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures   192,000          
Issuance of Restricted Common Stock, net value (1,725) 2 (1,727)        
Tax benefit from exercise of stock options 3,881   3,881        
Amortization of unearned compensation 9,273   9,273        
Repurchase of Common Stock, shares           1,011,000  
Repurchase of Common Stock, value (25,020)         (25,020)  
Ending balance at Dec. 31, 2009 169,537 668 491,068 246,771 277 (569,247)  
Ending balance Treasury Stock, Shares at Dec. 31, 2009           23,570,000  
Ending balance in Shares at Dec. 31, 2009 25,563 66,831,000          
NET INCOME 153,616     153,616     153,616
Net change in unrealized gain on short-term investments (166)       (166)   (166)
Total Comprehensive Income             153,450
Dividends (4,526)   62 (4,588)      
Exercise of Common Stock options, shares   1,491,000          
Exercise of Common Stock options 21,520 15 21,505        
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures   280,000          
Issuance of Restricted Common Stock, net value (313) 3 (316)        
Tax benefit from exercise of stock options 7,653   7,653        
Amortization of unearned compensation 5,795   5,795        
Ending balance at Dec. 31, 2010 353,116 686 525,767 395,799 111 (569,247)  
Ending balance Treasury Stock, Shares at Dec. 31, 2010 23,570,000         23,570,000  
Ending balance in Shares at Dec. 31, 2010 68,602,000 68,602,000          
NET INCOME 89,468     89,468     89,468
Net change in unrealized gain on short-term investments (550)       (550)   (550)
Total Comprehensive Income             88,918
Dividends (18,193)   347 (18,540)      
Exercise of Common Stock options, shares (333,000) 333,000          
Exercise of Common Stock options 4,497 3 4,494        
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures 0 183,000          
Issuance of Restricted Common Stock, net value (383) 2 (385)        
Tax benefit from exercise of stock options 5,131   5,131        
Amortization of unearned compensation 8,115   8,115        
Convertible note hedge transactions, net of tax (27,519)   (27,519)        
Issuance of Warrants during period 31,740   31,740        
Equity component of the Notes, net of tax 27,760   27,760        
Deferred financing costs allocated to equity (1,500)   (1,500)        
Ending balance at Dec. 31, 2011 $ 471,682 $ 691 $ 573,950 $ 466,727 $ (439) $ (569,247)  
Ending balance Treasury Stock, Shares at Dec. 31, 2011 23,570,000         23,570,000  
Ending balance in Shares at Dec. 31, 2011 69,118,000 69,118,000