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Goodwill | 12 Months Ended
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Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract] |
Goodwill | Goodwill Changes in the carrying amount of goodwill by segment for the year ended December 31, 2019 and December 31, 2018 are as follows:
(in thousands) | Specialty Chemicals Segment |  | Metals Segment |  | Total
Balance at December 31, 2017 | $ | 1,355 |  |  | $ | 4,649 |  |  | $ | 6,004 |
MUSA-Galvanized Acquisition | — |  |  | 3,796 |  |  | 3,796 |
Balance at 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 |

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- Definition The entire disclosure for goodwill. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -URI http://asc.fasb.org/subtopic&trid=2144439 + Details
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