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Commitments and Contingencies (Details) $ in Thousands | 1 Months Ended | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
May 31, 2020 USD ($) | Jun. 30, 2020 USD ($) | Jun. 30, 2019 USD ($) | Jun. 30, 2020 USD ($) numberOfLawsuits | Jun. 30, 2019 USD ($)
Loss Contingencies [Line Items] |  |  |  |  |
Impacts to gross profit |  | $ 20,702 | $ 19,522 | $ 43,913 | $ 36,182
Number of lawsuits filed | numberOfLawsuits |  |  |  | 2 |
Ransomware Cyber-Attack |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Impacts to gross profit | $ (1,728) |  |  |  |
Clean Air Act Violation |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Fine payable due to plea agreement |  | 1,000 |  | $ 1,000 |
EPA Administrative Civil Penalty |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Loss contingency, estimate of possible loss |  | $ 250 |  | $ 250 |

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