Quarterly report pursuant to Section 13 or 15(d)

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited)

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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) - USD ($)
$ in Thousands
Common Stock [Member]
Additional Paid-in Capital [Member]
Accumulated Other Comprehensive income/ (loss) [Member]
Retained Earnings [Member]
Total
Balance at Dec. 31, 2016 $ 217,792 $ 77,452 $ (70,075) $ 343,376 $ 568,545
Balance (in shares) at Dec. 31, 2016 217,792,000        
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net income 179,124 179,124
Other comprehensive income, net of tax          
Pension liability adjustment 14,159 14,159
Foreign currency translation adjustments 9,960 9,960
Cash dividends (122,017) (122,017)
Stock compensation $ 434 11,965 12,399
Stock compensation (in shares) 434,000        
Employee stock buybacks $ (234) (8,012) (8,246)
Employee stock buybacks (in shares) (234,000)        
Balance at Dec. 31, 2017 $ 217,992 81,405 (45,956) 400,483 653,924
Balance (in shares) at Dec. 31, 2017 217,992,000        
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net income       180,695 180,695
Other comprehensive income, net of tax          
Foreign currency translation adjustments (8,681)   (8,681)
Cash dividends (91,677) (91,677)
Stock compensation $ 409 9,621 10,030
Stock compensation (in shares) 409,000        
Employee stock buybacks $ (189) (9,344) (9,533)
Employee stock buybacks (in shares) (189,000)        
Balance at Sep. 30, 2018 $ 218,212 $ 81,682 $ (54,637) $ 489,501 $ 734,758
Balance (in shares) at Sep. 30, 2018 218,212,000