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Share-Based Compensation - Narrative (Details) - USD ($) |  | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended | 120 Months Ended |
--- | --- | --- | --- | --- | --- | --- | ---
Dec. 08, 2020 | Jan. 31, 2021 | Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020 | Dec. 31, 2020 | Dec. 31, 2019 | Jan. 04, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Share-based compensation expense |  |  | $ 4,300,000 | $ 4,600,000 | $ 14,788,000 | $ 13,340,000 |  |  |
Unrecognized stock-based compensation expense |  |  | $ 24,500,000 |  | $ 24,500,000 |  |  |  |
Unrecognized stock-based compensation expense, period for recognition |  |  |  |  | 1 year 9 months 18 days |  |  |  |
Fair value at grant date of stock option award |  |  |  |  | $ 600,000 | 600,000 |  |  |
Intrinsic value of options exercised |  |  |  |  | $ 3,800,000 | $ 8,200,000 |  |  |
Employee Stock Purchase Plan |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
ESPP purchase price | 85.00% |  |  |  |  |  |  |  |
Maximum employee purchase | $ 25,000 |  |  |  |  |  |  |  |
Share-based payment award, purchase period (in years) | 6 months |  |  |  |  |  |  |  |
Maximum employee purchase (in shares) | 2,400 |  |  |  |  |  |  |  |
Number of shares available for issuance (in shares) | 5,000,000 |  |  |  |  |  |  |  |
Time-Based Restricted Stock Units |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Number of awards granted (in shares) |  |  |  |  | 218,985 |  |  |  |
Number of awards vested (in shares) |  |  |  |  | 221,936 |  |  | 615,643 |
Market-Based Restricted Stock Units |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Number of awards granted (in shares) |  |  |  |  | 108,781 |  |  |  |
Number of awards vested (in shares) |  | 799,591 |  |  | 800,087 |  |  |  |
Vesting percentage |  | 150.00% |  |  |  |  |  |  |
Restricted stock units |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Weighted average grant date fair value, awards granted (in USD per share) |  |  |  |  | $ 33.69 |  |  |  |
Weighted average grant date fair value, awards vested (in USD per share) |  |  |  |  | 18.18 |  |  |  |
Weighted average grant date fair value, awards forfeited (in USD per share) |  |  |  |  | 31.24 |  |  |  |
Weighted average grant date fair value, non-vested awards (in USD per share) |  |  | $ 31.19 |  | $ 31.19 |  | $ 24.27 |  |
OP units |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Aggregate fair value of awards granted |  |  |  |  | $ 9,100,000 |  |  |  |
Americold Realty Trust 2017 Equity Incentive Plan |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Number of shares authorized (in shares) |  |  |  |  |  |  |  |  | 9,000,000
Dividends accrued on dividend equivalents on unvested units payable |  |  |  |  | $ 1,400,000 |  | $ 2,500,000 |  |
Associates | Time-Based Restricted Stock Units |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Number of awards granted (in shares) |  |  |  |  | 212,369 | 186,464 |  |  |
Vesting period |  |  |  |  | 1 year | 1 year |  |  |
Associates | Market-Based Restricted Stock Units |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Number of awards granted (in shares) |  |  |  |  | 108,781 | 108,810 |  |  |
Vesting period |  |  |  |  | 3 years | 3 years |  |  |
Associates | Restricted stock units |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Number of awards granted (in shares) |  |  |  |  | 321,150 | 295,274 |  |  |
Associates | OP units |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Number of awards granted (in shares) |  |  |  |  | 258,479 | 255,720 |  |  |
Associates | Minimum | Time-Based Restricted Stock Units |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Vesting period |  |  |  |  | 1 year | 1 year |  |  |
Associates | Minimum | Restricted stock units |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Vesting period |  |  |  |  | 1 year | 1 year |  |  |
Associates | Minimum | OP units |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Vesting period |  |  |  |  | 1 year | 1 year |  |  |
Associates | Maximum | Time-Based Restricted Stock Units |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Vesting period |  |  |  |  | 3 years | 3 years |  |  |
Associates | Maximum | Restricted stock units |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Vesting period |  |  |  |  | 3 years | 3 years |  |  |
Associates | Maximum | OP units |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Vesting period |  |  |  |  | 3 years | 3 years |  |  |
Trustees | Time-Based Restricted Stock Units |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Number of awards granted (in shares) |  |  |  |  | 6,616 |  |  |  |
Trustees | Restricted stock units |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Number of awards granted (in shares) |  |  |  |  | 6,616 | 8,517 |  |  |
Vesting period |  |  |  |  | 1 year | 1 year |  |  |
Trustees | OP units |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Number of awards granted (in shares) |  |  |  |  | 17,863 | 16,325 |  |  |
Vesting period |  |  |  |  | 1 year | 1 year |  |  |
Trustees | Time-based Restricted Stock Units, Awarded As Part of Annual Compensation |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Number of awards granted (in shares) |  |  |  |  |  | 8,517 |  |  |

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