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CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (Unaudited) - 6 months ended Jun. 30, 2017 - USD ($)
shares in Thousands, $ in Thousands
Common Stock
Capital in Excess of Par Value
Retained Earnings
Accumulated Other Comprehensive Loss
Total
Balance at Dec. 31, 2016 $ 21,749   $ 803,152 $ (18,102) $ 806,799
Balance (in shares) at Dec. 31, 2016 217,489        
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Stock issued for stock incentive plans, net $ 50 $ 5,962     6,012
Stock issued for stock incentive plans, net (in shares) 499        
Stock purchased and retired $ (64) $ (5,962) (6,428)   (12,454)
Stock purchased and retired (in shares) (636)        
Net income     47,474   47,474
Pension adjustment, net of taxes       270 270
Foreign currency translation       231 231
Unrealized loss on securities, net of taxes       (21) (21)
Balance at Jun. 30, 2017 $ 21,735   $ 844,198 $ (17,622) $ 848,311
Balance (in shares) at Jun. 30, 2017 217,352