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Accounts Receivable - Schedule of Receivables (Details) - USD ($) $ in Thousands | Jun. 30, 2020 | Apr. 06, 2020 | Jan. 31, 2020 | Jan. 01, 2020 | Dec. 31, 2019
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Receivables [Abstract] |  |  |  |  |
Receivables, Fair Value Disclosure | $ 34,700 |  | $ 34,300 | $ 34,300 |
Receivable with Imputed Interest, Net Amount | 34,977 |  |  |  | $ 0
Trade accounts receivable | 413,638 |  |  |  | 323,502
Less: Allowance for expected credit losses and doubtful accounts (a) (b) | (7,073) |  |  |  | (13,512)
Trade accounts receivable, net | 406,565 |  |  |  | 309,990
Other receivables | 19,601 |  |  |  | $ 21,265
ESOL | Harsco Clean Earth Segment |  |  |  |  |
Receivables [Abstract] |  |  |  |  |
Trade accounts receivable, net | 124,100 | $ 124,100 |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Trade accounts receivable, net | $ 124,100 | 124,100 |  |  |
Accounts Receivable, Allowance for Credit Loss |  | $ 12,100 |  |  |

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