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CONSOLIDATED STATEMENTS OF EQUITY - USD ($)
$ in Thousands
Total
Common Stock [Member]
Capital in Excess of Par Value [Member]
Reinvested Earnings [Member]
Accumulated Other Comprehensive Loss [Member]
Noncontrolling Interest [Member]
Balance at Dec. 31, 2014   $ 10,821 $ 37,966 $ 160,179 $ (18,030) $ 7,018
Net earnings $ 18,153 0 0 18,212 0 (59)
Foreign currency translation adjustments (3,411) 0 0 0 (2,797) (614)
Pension liability adjustment, net of tax (2,360) 0 0 0 2,360 0
Cash dividends declared   0 0 (8,563) 0 0
Stock options exercised   279 5,865 0 0 0
Issuance of restricted stock   22 (22) 0 0 0
Stock-based compensation expense   0 1,559 0 0 0
Excess tax benefits from stock options exercised and vesting of restricted stock   0 391 0 0 0
Shares purchased and retired   (355) 0 (9,503) 0 0
Balance at Dec. 31, 2015   10,767 45,759 160,325 (18,467) 6,345
Net earnings 16,993 0 0 16,472 0 521
Foreign currency translation adjustments 198 0 0 0 202 (4)
Pension liability adjustment, net of tax (1,696) 0 0 0 1,696 0
Cash dividends declared   0 0 (8,772) 0 0
Cash dividends paid to noncontrolling interest of subsidiary   0 0 0 0 (170)
Stock options exercised   123 2,871 0 0 0
Issuance of restricted stock   27 (27) 0 0 0
Restricted stock forfeited   (2) 2 0 0 0
Stock-based compensation expense   0 1,559 0 0 0
Excess tax benefits from stock options exercised and vesting of restricted stock   0 20 0 0 0
Shares purchased and retired   (410) 0 (10,557) 0 0
Balance at Dec. 31, 2016 208,280 10,505 50,184 157,468 (16,569) 6,692
Net earnings 16,699 0 0 16,491 0 208
Foreign currency translation adjustments 1,729 0 0 0 1,303 426
Pension liability adjustment, net of tax 2,593 0 0 0 (2,593) 0
Cash dividends declared   0 0 (8,968) 0 0
Cash dividends paid to noncontrolling interest of subsidiary   0 0 0 0 (204)
Stock options exercised   175 4,109 0 0 0
Issuance of restricted stock   31 (31) 0 0 0
Stock-based compensation expense   0 1,622 0 0 0
Shares purchased and retired   (549) 0 (14,641) 0 0
Balance at Dec. 31, 2017 $ 205,659 $ 10,162 $ 55,884 $ 150,350 $ (17,859) $ 7,122