Quarterly report pursuant to Section 13 or 15(d)

Significant Accounting Policies (Details)

 v2.3.0.11
Significant Accounting Policies (Details) (USD $)
In Thousands, except Per Share data
 3 Months Ended 6 Months Ended
Jun. 30, 2011
Jun. 30, 2010
Jun. 30, 2011
Jun. 30, 2010
Dec. 31, 2010
Consolidated Balance Sheet          
Paid-in-capital in excess of par value $ 271,749   $ 271,749   $ 248,693
Retained earnings 331,100   331,100   265,686
Consolidated Statements of Income          
Income Taxes 41,139 32,034 73,872 42,169  
Net Income 111,180 82,175 199,199 134,046  
Basic earnings per share $ 0.93 $ 0.69 $ 1.68 $ 1.12  
Diluted earnings per share $ 0.88 $ 0.65 $ 1.57 $ 1.06  
Common Share amounts used to compute Basic and Diluted Earnings Per Share          
Weighted average shares used in basic computations 119,007 119,054 118,609 119,686  
Dilutive effect of exercise of equity grants outstanding 7,350 6,221 7,748 6,128  
Dilutive effect of warrants 260 410 253 398  
Weighted average shares used in diluted computations 126,617 125,685 126,610 126,212  
Consolidated Statement of Cash Flows          
Net income 111,180 82,175 199,199 134,046  
Excess tax benefits from share-based payment arrangements     (19,544) (4,463)  
Net cash provided by operating activities     250,647 170,633  
Excess tax benefits from share-based payment arrangements     19,544 4,463  
Net cash used in financing activities     (149,510) (101,133)  
As Reported [Member]
          
Consolidated Balance Sheet          
Paid-in-capital in excess of par value         257,375
Retained earnings         257,004
Consolidated Statements of Income          
Income Taxes   32,276   42,411  
Net Income   81,933   133,804  
Basic earnings per share   $ 0.69   $ 1.12  
Diluted earnings per share   $ 0.66   $ 1.07  
Common Share amounts used to compute Basic and Diluted Earnings Per Share          
Weighted average shares used in basic computations   119,054   119,686  
Dilutive effect of exercise of equity grants outstanding   4,742   4,694  
Dilutive effect of warrants   410   398  
Weighted average shares used in diluted computations   124,206   124,778  
Consolidated Statement of Cash Flows          
Net income   81,933   133,804  
Excess tax benefits from share-based payment arrangements       (4,705)  
Income taxes payable       (4,604)  
Net cash provided by operating activities       170,391  
Excess tax benefits from share-based payment arrangements       4,705  
Net cash used in financing activities       (100,891)  
As Adjusted [Member]
          
Consolidated Balance Sheet          
Paid-in-capital in excess of par value         248,693
Retained earnings         265,686
Consolidated Statements of Income          
Income Taxes   32,034   42,169  
Net Income   82,175   134,046  
Basic earnings per share   $ 0.69   $ 1.12  
Diluted earnings per share   $ 0.65   $ 1.06  
Common Share amounts used to compute Basic and Diluted Earnings Per Share          
Weighted average shares used in basic computations   119,054   119,686  
Dilutive effect of exercise of equity grants outstanding   6,221   6,128  
Dilutive effect of warrants   410   398  
Weighted average shares used in diluted computations   125,685   126,212  
Consolidated Statement of Cash Flows          
Net income   82,175   134,046  
Excess tax benefits from share-based payment arrangements       (4,463)  
Income taxes payable       (4,846)  
Net cash provided by operating activities       170,633  
Excess tax benefits from share-based payment arrangements       4,463  
Net cash used in financing activities       (101,133)  
As Computed Under Prior Method [Member]
          
Consolidated Statements of Income          
Income Taxes 43,022   76,205    
Net Income 109,297   196,866    
Basic earnings per share $ 0.92   $ 1.66    
Diluted earnings per share $ 0.88   $ 1.58    
Consolidated Statement of Cash Flows          
Net income $ 109,297   $ 196,866