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Goodwill (Tables) | 12 Months Ended
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Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Carrying Amount of Goodwill | Changes in the carrying amount of goodwill by segment for the year ended December 31, 2020 and 2019 are as follows:
(in thousands) | Specialty Chemicals Segment |  | Metals Segment |  | Total
Balance December 31, 2018 | $ | 1,355 |  |  | $ | 8,445 |  |  | $ | 9,800 |
American Stainless Acquisition | — |  |  | 7,758 |  |  | $ | 7,758 |
Balance December 31, 2019 | $ | 1,355 |  |  | $ | 16,203 |  |  | $ | 17,558 |
Impairment charges | — |  |  | (16,203) |  |  | $ | (16,203) |
Balance December 31, 2020 | $ | 1,355 |  |  | $ | — |  |  | $ | 1,355 |

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- Definition Tabular disclosure of goodwill and intangible assets, which may be broken down by segment or major class. + 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 -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 + Details
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