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Accrued Expenses Accrued Expenses Footnote (Details) - USD ($) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Oct. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Concentration Risk [Line Items] |  |  |  |
Acquisition and integration related costs |  | $ 17,263 | $ 20,684 | $ 19,377
Total Current Liabilities |  |  |  |
Concentration Risk [Line Items] |  |  |  |
Benchmark for individual components of accrued expenses, percentage |  | 5.00% |  |
Lithium Hydroxide Conversion Assets |  |  |  |
Concentration Risk [Line Items] |  |  |  |
Ownership percentage | 40.00% | 40.00% |  |
Mineral Resources Limited Wodgina Project |  |  |  |
Concentration Risk [Line Items] |  |  |  |
Ownership percentage | 60.00% | 60.00% |  |
Stamp duty tax | Mineral Resources Limited Wodgina Project |  |  |  |
Concentration Risk [Line Items] |  |  |  |
Acquisition and integration related costs |  | $ 61,500 | $ 64,800 |

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- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=116868678&loc=d3e1043-128460 + Details
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