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Goodwill and Other Intangible Assets - Goodwill Rollforward (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Goodwill [Roll Forward] |  |
Balance, beginning | $ 334,640 | $ 316,650
Goodwill, Acquired During Period | 92,390 | 18,400
Goodwill, Impairment Loss | (126,840) |
Goodwill reassigned between segments | 0 | 0
Foreign currency translation | 3,780 | (410)
Balance, ending | 303,970 | 334,640
Packaging [Member] |  |
Goodwill [Roll Forward] |  |
Balance, beginning | 181,650 | 163,660
Goodwill, Acquired During Period | 49,130 | 18,400
Goodwill, Impairment Loss | 0 |
Goodwill reassigned between segments | 0 | 0
Foreign currency translation | 3,780 | (410)
Balance, ending | 234,560 | 181,650
Aerospace [Member] |  |
Goodwill [Roll Forward] |  |
Balance, beginning | 133,690 | 146,430
Goodwill, Acquired During Period | 43,260 | 0
Goodwill, Impairment Loss | (126,840) |
Goodwill reassigned between segments | 12,740 | (12,740)
Foreign currency translation | 0 | 0
Balance, ending | 62,850 | 133,690
Specialty Products [Member] |  |
Goodwill [Roll Forward] |  |
Balance, beginning | 19,300 | 6,560
Goodwill, Acquired During Period | 0 | 0
Goodwill, Impairment Loss | 0 |
Goodwill reassigned between segments | (12,740) | 12,740
Foreign currency translation | 0 | 0
Balance, ending | $ 6,560 | $ 19,300

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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://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(10)(1)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 2: 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=120320667&loc=SL49117168-202975 Reference 3: 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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- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. + 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 (b) -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 + Details
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