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Business Combinations - Narrative (Details) - USD ($) $ in Thousands |  |  |  | 3 Months Ended | 9 Months Ended | 17 Months Ended |
--- | --- | --- | --- | --- | --- | --- | ---
Aug. 31, 2020 | Jan. 02, 2020 | May 01, 2019 | Sep. 30, 2020 | Jun. 30, 2020 | Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Dec. 31, 2019
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Aggregate cash consideration |  |  |  |  |  | $ 398,737 | $ 1,319,929 |  |
Goodwill |  |  |  | $ 399,301 |  | 399,301 |  | $ 399,301 | $ 318,483
Nova Cold Logistics |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Property, buildings and equipment |  |  |  | 171,900 |  | 171,900 |  | 171,900 |
Deferred tax liability |  | $ 42,000 |  | 33,000 | $ 34,500 | 33,000 |  | 33,000 |
Goodwill |  |  |  | 64,600 |  | 64,600 |  | 64,600 |
Deferred tax liability, change |  |  |  | 1,500 | $ 7,500 | 9,000 |  |  |
Newport Cold |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Aggregate cash consideration |  | 56,700 |  |  |  |  |  |  |
Property, buildings and equipment |  | 30,200 |  |  |  |  |  |  |
Goodwill |  | 7,100 |  |  |  |  |  |  |
Cloverleaf |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Deferred tax liability |  |  | $ 9,063 | 9,024 |  | 9,024 |  | 9,024 | 8,900
Goodwill |  |  | 107,643 | 126,096 |  | 126,096 |  | 126,096 |
Deferred tax liability, change |  |  |  |  |  |  |  | (39) |
Revenue since date of acquisition |  |  |  | 53,900 |  | 93,400 |  |  |
Net income since date of acquisition |  |  |  | 2,800 |  | 4,700 |  |  |
Deferred tax liability, intangible assets |  |  |  | 1,900 |  | 1,900 |  | 1,900 |
Lanier Cold Storage |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Aggregate cash consideration |  |  | 81,900 |  |  |  |  |  |
Property, buildings and equipment |  |  | 60,000 |  |  |  |  |  |
Deferred tax liability |  |  |  |  |  |  |  |  | $ 700
Goodwill |  |  | 6,400 |  |  |  |  |  |
AM-C Warehouses |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Aggregate cash consideration | $ 82,500 |  |  |  |  |  |  |  |
Property, buildings and equipment | 53,700 |  |  |  |  |  |  |  |
Goodwill | 9,500 |  |  |  |  |  |  |  |
Customer relationships | Nova Cold Logistics |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Identifiable intangibles |  |  |  | 53,900 |  | $ 53,900 |  | 53,900 |
Weighted average remaining intangible amortization life (in months) |  |  |  |  |  | 25 years |  |  |
Customer relationships | Newport Cold |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Identifiable intangibles |  | $ 18,700 |  |  |  |  |  |  |
Weighted average remaining intangible amortization life (in months) |  | 25 years |  |  |  |  |  |  |
Customer relationships | Cloverleaf |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Identifiable intangibles |  |  | 241,738 | 250,346 |  | $ 250,346 |  | 250,346 |
Weighted average remaining intangible amortization life (in months) |  |  |  |  |  | 25 years |  |  |
Customer relationships | Lanier Cold Storage |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Identifiable intangibles |  |  | $ 16,300 |  |  |  |  |  |
Weighted average remaining intangible amortization life (in months) |  |  | 25 years |  |  |  |  |  |
Customer relationships | AM-C Warehouses |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Identifiable intangibles | $ 19,800 |  |  |  |  |  |  |  |
Weighted average remaining intangible amortization life (in months) | 25 years |  |  |  |  |  |  |  |
Trade names and trademarks | Cloverleaf |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Identifiable intangibles |  |  | $ 1,623 | $ 1,623 |  | $ 1,623 |  | $ 1,623 |
Weighted average remaining intangible amortization life (in months) |  |  |  |  |  | 1 year 6 months |  |  |

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