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Goodwill and Other Intangible Assets (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Goodwill [Roll Forward] |  |
Balance at the beginning of the period | $ 404,713 | $ 394,919
Changes to goodwill | 330,230 | 22,518
Foreign currency translation | 3,426 | (12,724)
Balance at the end of the period | 738,369 | 404,713
Harsco Environmental |  |
Goodwill [Roll Forward] |  |
Balance at the beginning of the period | 391,687 | 381,893
Changes to goodwill | 0 | 22,518
Foreign currency translation | 3,426 | (12,724)
Balance at the end of the period | 395,113 | 391,687
Clean Earth |  |
Goodwill [Roll Forward] |  |
Balance at the beginning of the period | 0 | 0
Changes to goodwill | 330,230 | 0
Foreign currency translation | 0 | 0
Balance at the end of the period | 330,230 | 0
Harsco Rail |  |
Goodwill [Roll Forward] |  |
Balance at the beginning of the period | 13,026 | 13,026
Changes to goodwill | 0 | 0
Foreign currency translation | 0 | 0
Balance at the end of the period | $ 13,026 | $ 13,026

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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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- 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 Amount of increase (decrease), classified as other, of an asset representing the 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 (g) -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 + Details
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- Details
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