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Summary of Significant Accounting Policies (Details) $ / shares in Units, $ in Thousands | 12 Months Ended
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Dec. 31, 2017 USD ($) Segment $ / shares shares | Dec. 31, 2016 USD ($) $ / shares shares | Dec. 31, 2015 USD ($) $ / shares shares
Nature of Operations [Abstract] |  |  |
Number of reportable segments | Segment | 3 |  |
Inventories [Abstract] |  |  |
Inventories include finished and in-process products | $ 310,400 | $ 273,800 |
Raw materials and supplies | 153,100 | 130,500 |
Intangible assets [Abstract] |  |  |
Impairment charge | 0 | 0 | $ 0
Numerator [Abstract] |  |  |
Net earnings from continuing operations | $ 89,600 | $ 122,913 | $ 107,247
Denominator [Abstract] |  |  |
Denominator for basic EPS - weighted-average common shares | shares | 43,780,000 | 44,523,000 | 45,910,000
Effect of dilutive securities (in shares) | shares | 251,000 | 320,000 | 294,000
Denominator for diluted EPS - adjusted weighted-average shares outstanding | shares | 44,031,000 | 44,843,000 | 46,204,000
EPS from continuing operations [Abstract] |  |  |
Basic (in dollars per share) | $ / shares | $ 2.05 | $ 2.76 | $ 2.34
Diluted (in dollars per share) | $ / shares | $ 2.03 | $ 2.74 | $ 2.32
Number of antidilutive shares excluded from the diluted EPS calculation (in shares) | shares | 0 | 0 | 0
Research and Development [Abstract] |  |  |
Research and development costs | $ 40,900 | $ 40,900 | $ 35,100
Advertising [Abstract] |  |  |
Advertising costs | $ 2,200 | $ 2,300 | $ 1,700
Minimum [Member] |  |  |
Intangible assets [Abstract] |  |  |
Useful lives of intangible assets | 5 years |  |
Maximum [Member] |  |  |
Intangible assets [Abstract] |  |  |
Useful lives of intangible assets | 20 years |  |
Building and Leasehold Improvements [Member] | Minimum [Member] |  |  |
Property, Plant and Equipment [Abstract] |  |  |
Estimated useful lives | 5 years |  |
Building and Leasehold Improvements [Member] | Maximum [Member] |  |  |
Property, Plant and Equipment [Abstract] |  |  |
Estimated useful lives | 40 years |  |
Machinery and Equipment [Member] | Minimum [Member] |  |  |
Property, Plant and Equipment [Abstract] |  |  |
Estimated useful lives | 3 years |  |
Machinery and Equipment [Member] | Maximum [Member] |  |  |
Property, Plant and Equipment [Abstract] |  |  |
Estimated useful lives | 20 years |  |
Forward Exchange Contracts [Member] | Maximum [Member] |  |  |
Derivative [Line Items] |  |  |
Number of months for contracts to mature | 18 months |  |

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