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Goodwill and Other Intangible Assets - Goodwill Rollforward (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017
Goodwill [Roll Forward] |  |
Balance, beginning | $ 319,390 | $ 315,080
Foreign currency translation | (2,740) | 4,310
Balance, ending | 316,650 | 319,390
Packaging [Member] |  |
Goodwill [Roll Forward] |  |
Balance, beginning | 166,400 | 162,090
Foreign currency translation | (2,740) | 4,310
Balance, ending | 163,660 | 166,400
Aerospace [Member] |  |
Goodwill [Roll Forward] |  |
Balance, beginning | 146,430 | 146,430
Foreign currency translation | 0 | 0
Balance, ending | 146,430 | 146,430
Specialty Products [Member] |  |
Goodwill [Roll Forward] |  |
Balance, beginning | 6,560 | 6,560
Foreign currency translation | 0 | 0
Balance, ending | $ 6,560 | $ 6,560

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266 + Details
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Period Type: | instant

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- Definition Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Details
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- Details
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Balance Type: |
Period Type: |

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- Details
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