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Consolidated Statements Of Stockholders' Equity And Comprehensive Income (USD $)
In Thousands, unless otherwise specified
Common Stock [Member]
Paid-In Capital [Member]
Retained Earnings [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Treasury Stock [Member]
Total
BALANCE at Dec. 31, 2008 $ 805 $ 93,343 $ 826,511 $ (7,146) $ (167,983) $ 745,530
Dividends on common stock 0 0 (104,205) 0 0 (104,205)
Exercise of stock options, including excess tax benefits 0 (2,197) 0 0 6,105 3,908
Stock-based compensation expense 0 1,243 0 0 0 1,243
Comprehensive income:            
Net income 0 0 56,584 0 0 56,584
Foreign currency translation adjustments 0 0 0 1,590 0 1,590
Total comprehensive income 0 0 56,584 1,590 0 58,174
BALANCE at Dec. 31, 2009 805 92,389 778,890 (5,556) (161,878) 704,650
Dividends on common stock 0 0 (130,713) 0 0 (130,713)
Exercise of stock options, including excess tax benefits 0 (1,978) 0 0 13,380 11,402
Stock-based compensation expense 0 1,461 0 0 0 1,461
Comprehensive income:            
Net income 0 0 80,039 0 0 80,039
Foreign currency translation adjustments 0 0 0 2,136 0 2,136
Total comprehensive income 0 0 80,039 2,136 0 82,175
BALANCE at Dec. 31, 2010 805 91,872 728,216 (3,420) (148,498) 668,975
Dividends on common stock 0 0 (50,979) 0 0 (50,979)
Exercise of stock options, including excess tax benefits 0 (75) 0 0 3,620 3,545
Stock-based compensation expense 0 2,599 0 0 0 2,599
Comprehensive income:            
Net income 0 0 102,757 0 0 102,757
Foreign currency translation adjustments 0 0 0 (1,750) 0 (1,750)
Total comprehensive income 0 0 102,757 (1,750) 0 101,007
BALANCE at Dec. 31, 2011 $ 805 $ 94,396 $ 779,994 $ (5,170) $ (144,878) $ 725,147