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v3.21.2

Commitments and Contingencies (Details) $ in Thousands |  |  |  | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Jun. 25, 2020 USD ($) | Feb. 18, 2020 USD ($) | Feb. 07, 2013 plaintiff | Sep. 30, 2021 USD ($) | Dec. 31, 1994 USD ($) | Dec. 31, 2020 USD ($)
Loss Contingencies [Line Items] |  |  |  |  |  |
Outstanding surety bond |  |  |  | $ 12,800 |  | $ 10,100
Collective-bargaining arrangement, percentage of participants |  |  |  | 40.00% |  |
Collective-bargaining arrangement, percentage of participants expiring in 2020 |  |  |  | 1.00% |  |
Kansas Breach of Settlement Agreement |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Litigation settlement |  |  |  |  | $ 58,700 |
Number of plaintiffs appealing dismissal | plaintiff |  |  | 1 |  |  |
Preferred Freezer Services, LLC Litigation |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Litigation settlement from other party |  | $ 550 |  |  |  |
Damages sought | $ 400,000 |  |  |  |  |
Revolving Credit Facility | Line of Credit |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Letter of credit amount outstanding |  |  |  | $ 22,300 |  | $ 21,700

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