v3.20.4

Summary of Significant Accounting Policies - Reclassifications (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | --- | ---
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |
Reclassification from inventories | $ (42,349) |  | $ (48,296)
Reclassification to other long-term assets | $ 16,819 |  | $ 20,067
Reclassification Adjustment | Catalyst Inventory |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |
Reclassification from inventories |  | $ 5,600 |
Reclassification to other long-term assets |  | $ 5,600 |

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