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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) [Abstract] |  |  |  |
Net earnings | $ 15,945 | $ 17,764 | $ 23,934 | $ 33,498
Other comprehensive income (loss), net of tax: |  |  |  |
Foreign currency translation adjustments | (5,935) | 2,733 | (3,716) | 5,456
Amortization of: |  |  |  |
Unrecognized gain | (12) | (271) | (21) | (330)
Unrecognized actuarial gains | 12 | 472 | 12 | 472
Income tax related to pension and postretirement plans | 0 | (81) | 4 | (57)
Pension and postretirement plans, net of tax | 0 | 120 | (5) | 85
Total other comprehensive income (loss), net of tax | (5,935) | 2,853 | (3,721) | 5,541
Comprehensive income | $ 10,010 | $ 20,617 | $ 20,213 | $ 39,039

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