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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
Cumulative effect adjustment for ASU implementation | ASU 2016-01 [Member] $ 0 $ 0 $ 1,475 $ (2,628) $ 0 $ (1,153)
Cumulative effect adjustment for ASU implementation | ASU 2018-02 [Member] 0 0 5,575 (5,575) 0 0
Balance at Dec. 31, 2017 497 574,209 543,713 (22,077) (138,165) 958,177
Net income 0 0 25,986 0 0 25,986
Cash dividends 0 0 (20,966) 0 0 (20,966)
Net issuance of shares to employee and other stock plans 0 (2,037) 0 0 980 (1,057)
Stock-based compensation 0 2,454 0 0 0 2,454
Other comprehensive (loss) income 0 0 0 (10,711) 0 (10,711)
Balance at Mar. 31, 2018 497 574,626 555,783 (40,991) (137,185) 952,730
Balance at Dec. 31, 2018 497 575,466 621,203 (43,174) (136,083) 1,017,909
Net income 0 0 29,127 0 0 29,127
Cash dividends 0 0 (22,774) 0 0 (22,774)
Net issuance of shares to employee and other stock plans 0 (2,099) 0 0 1,073 (1,026)
Stock-based compensation 0 2,577 0 0 0 2,577
Other comprehensive (loss) income 0 0 0 8,242 0 8,242
Balance at Mar. 31, 2019 $ 497 $ 575,944 $ 627,556 $ (34,932) $ (135,010) $ 1,034,055