v2.4.0.8
CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $)
In Thousands, unless otherwise specified
Total
Common Stock
Additional Paid-in Capital
Accumulated Other Comprehensive Income (Loss)
Treasury Stock
Retained Earnings
Beginning Balance at Dec. 31, 2011 $ 709,315 $ 423 $ 146,282 $ 30,588 $ (101,367) $ 633,389
Beginning Balance (in shares) at Dec. 31, 2011   42,252        
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Stock issued to employees exercising stock options (in shares)   136        
Stock issued to employees exercising stock options 1,863 1 1,862      
Tax benefit from employees’ stock option and restricted stock units 3,049   3,049      
Stock issued to employees for vesting of restricted stock units (in shares)   100        
Stock issued to employees for vesting of restricted stock units 1 1        
Stock-based compensation, net of share repurchases for tax withholdings 5,865   5,865      
Purchase of shares of treasury stock (11,288)       (11,288)  
Changes in available-for-sale securities, net of tax effect of $68 in 2013 and $(289) in 2012 114     114    
Changes in interest rate swaps, net of tax effect of $35 60     60    
Foreign currency translation 7,189     7,189    
Net income 67,869         67,869
Ending Balance at Sep. 30, 2012 784,037 425 157,058 37,951 (112,655) 701,258
Ending Balance (in shares) at Sep. 30, 2012   42,488        
Beginning Balance at Dec. 31, 2012 817,931 426 162,470 37,379 (112,655) 730,311
Beginning Balance (in shares) at Dec. 31, 2012   42,586        
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Stock issued to employees exercising stock options (in shares)   70        
Stock issued to employees exercising stock options 1,672 1 1,671      
Tax benefit from employees’ stock option and restricted stock units 6,509   6,509      
Stock issued to employees for vesting of restricted stock units (in shares)   241        
Stock issued to employees for vesting of restricted stock units   2 (2)      
Stock-based compensation, net of share repurchases for tax withholdings (4,033)   (4,033)      
Purchase of shares of treasury stock (17,911)       (17,911)  
Changes in available-for-sale securities, net of tax effect of $68 in 2013 and $(289) in 2012 (492)     (492)    
Foreign currency translation (36,550)     (36,550)    
Net income 114,740         114,740
Ending Balance at Sep. 30, 2013 $ 881,866 $ 429 $ 166,615 $ 337 $ (130,566) $ 845,051
Ending Balance (in shares) at Sep. 30, 2013   42,897