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CONDENSED STATEMENT OF STOCKHOLDERS' EQUITY (USD $)
In Thousands, unless otherwise specified
Total
Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Treasury Stock [Member]
Accumulated Other Comprehensive Loss [Member]
Balance at Dec. 31, 2013 $ 179,086 $ 23,647 $ 20,614 $ 192,088 $ (37,884) $ (19,379)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income and comprehensive income 46,605     46,605    
Dividends paid (19,989)     (19,989)    
Unpaid dividends accrued (697)     (697)    
Recognition of stock-based compensation expense 2,758   2,758      
Exercise of stock options and vesting of RSU's (2,294)   (2,294)      
Tax benefit realized from exercise of stock options and vesting of RSU's 1,620   1,620      
Common stock issued - compensation plans    69 (69)      
Balance at Jun. 28, 2014 $ 207,089 $ 23,716 $ 22,629 $ 218,007 $ (37,884) $ (19,379)