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Consolidated Statements of Stockholders' Equity (unaudited) - USD ($)
$ in Thousands
Common Stock [Member]
Additional Paid-in-Capital [Member]
Retained Earnings [Member]
Accumulated Other Comprehensive (Loss) Income [Member]
Common Stock in Treasury [Member]
Total
Beginning Balance at Dec. 31, 2013 $ 497 $ 574,152 $ 385,787 $ (16,765) $ (127,102) $ 816,569
Net income 0 0 56,561 0 0 56,561
Cash dividends 0 0 (27,653) 0 0 (27,653)
Purchases of treasury shares 0 0 0 0 (72) (72)
Net issuance of shares to employee benefit plans and other stock plans, including tax benefit 0 (2,312) 0 0 3,515 1,203
Stock-based compensation 0 2,817 0 0 0 2,817
Other comprehensive income 0 0 0 8,015 0 8,015
Ending Balance at Sep. 30, 2014 497 574,657 414,695 (8,750) (123,659) 857,440
Beginning Balance at Dec. 31, 2014 497 576,504 423,956 (17,027) (119,749) 864,181
Net income 0 0 57,298 0 0 57,298
Cash dividends 0 0 (28,553) 0 0 (28,553)
Purchases of treasury shares 0 0 0 0 (26,797) (26,797)
Net issuance of shares to employee benefit plans and other stock plans, including tax benefit 0 (3,423) 0 0 6,451 3,028
Stock-based compensation 0 3,397 0 0 0 3,397
Other comprehensive income 0 0 0 3,662 0 3,662
Ending Balance at Sep. 30, 2015 $ 497 $ 576,478 $ 452,701 $ (13,365) $ (140,095) $ 876,216