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Consolidated Statements of Changes in Stockholders' Equity - 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
Balance at Dec. 31, 2012 $ 393 $ 346,692 $ 357,558 $ (5,880) $ (116,490) $ 582,273
Net income 0 0 61,747 0 0 61,747
Cash dividends 0 0 (33,518) 0 0 (33,518)
Purchases of treasury shares 0 0 0 0 (12,459) (12,459)
Net issuance of shares for acquisition 104 225,447 0 0 (5,779) 219,772
Net issuance of shares to employee stock plans, including tax benefit 0 (2,292) 0 0 7,626 5,334
Stock-based compensation 0 4,305 0 0 0 4,305
Other comprehensive loss 0 0 0 (10,885) 0 (10,885)
Balance at Dec. 31, 2013 497 574,152 385,787 (16,765) (127,102) 816,569
Net income 0 0 75,074 0 0 75,074
Cash dividends 0 0 (36,905) 0 0 (36,905)
Purchases of treasury shares 0 0 0 0 (72) (72)
Net issuance of shares to employee stock plans, including tax benefit 0 (1,169) 0 0 7,425 6,256
Stock-based compensation 0 3,521 0 0 0 3,521
Other comprehensive loss 0 0 0 (262) 0 (262)
Balance at Dec. 31, 2014 497 576,504 423,956 (17,027) (119,749) 864,181
Net income 0 0 76,425 0 0 76,425
Cash dividends 0 0 (38,149) 0 0 (38,149)
Purchases of treasury shares 0 0 0 0 (26,797) (26,797)
Net issuance of shares to employee stock plans, including tax benefit 0 (3,864) 0 0 11,513 7,649
Stock-based compensation 0 4,086 0 0 0 4,086
Other comprehensive loss 0 0 0 (5,391) 0 (5,391)
Balance at Dec. 31, 2015 $ 497 $ 576,726 $ 462,232 $ (22,418) $ (135,033) $ 882,004