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Business Combinations - Pro Forma Information (Details) - USD ($) $ / shares in Units, $ in Thousands |  | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Dec. 30, 2020 | Sep. 30, 2020 | Sep. 30, 2020 | Dec. 31, 2020
Business Acquisition [Line Items] |  |  |  |
Total revenue |  | $ 643,195 | $ 1,859,384 |
Net (loss) income attributable to Americold Realty Trust |  | $ (3,264) | $ 28,247 |
Net income per share, diluted (in USD per share) |  | $ (0.01) | $ 0.11 |
Agro Merchants Group |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Number of shares issued (in shares) | 14,166,667 |  |  | 46,100,000

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