Organization, Basis of Presentation, and Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2024
Accounting Policies [Abstract]
Principles of consolidation policy	Presentation Our unaudited consolidated financial statements include the accounts of our wholly owned or controlled subsidiaries. All intercompany balances and transactions have been eliminated in consolidation. The information furnished reflects all normal recurring adjustments, which are, in the opinion of management, necessary to provide a fair statement of the results for the interim periods. Operating results for the period ended March 31, 2024 are not necessarily indicative of results that may be expected for the twelve months ended December 31, 2024. The accompanying unaudited consolidated financial statements have been prepared in accordance with Rule 10-01 of Regulation S-X for interim financial statements required to be filed with the U.S. Securities and Exchange Commission (“SEC”) and do not include all information and footnotes required by U.S. generally accepted accounting principles (“U.S. GAAP”) for complete financial statements. These financial statements should be read in conjunction with the financial statements for the year ended December 31, 2023 and notes thereto included in our Annual Report on Form 10-K filed with the Securities and Exchange Commission on February 27, 2024 (the “202 3 Annual Report”).
Use of estimates policy	Use of Estimates The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclose contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues, expenses, and impairments during the reporting period. Actual results could differ from those estimates, and such differences could be material.
Mineral Resources Arrangement	Mineral Resources Arrangement We have rights to the brine underlying our approximately 40,000 gross acres of brine leases in the Smackover Formation in Southwest Arkansas, including rights to the bromine and lithium contained in the brine. In June 2023, we entered into a memorandum of understanding (“MOU”) with Saltwerx LLC (“Saltwerx”), an indirect wholly owned subsidiary of ExxonMobil Corporation, relating to a newly formed Brine Unit and potential bromine and lithium production from brine produced from the unit. We completed an initial preliminary economic assessment in early 2023 for a bromine extraction plant. On January 8, 2024, we announced the completion of a technical resources report for our Brine Unit in Arkansas. During the three months ended March 31, 2024, we capitalized approximately $4.0 million of costs associated with the development of our properties in Arkansas. We recognized $0.7 million of expense during the three months ended March 31, 2023 for exploration and pre-development costs representing expenditures incurred to evaluate potential future development of our lithium and bromine properties in Arkansas.
Foreign currency translation policy	Foreign Currency Translation We have designated the Euro, the British pound, the Canadian dollar, the Brazilian real, and the Mexican peso as the functional currencies for our operations in Finland and Sweden, the United Kingdom, Canada, Brazil, and certain of our operations in Mexico, respectively. The United States dollar is the designated functional currency for all of our other non-U.S. operations. The cumulative translation effects of translating the applicable accounts from the functional currencies into the United States dollar at current exchange rates are included as a separate component of equity. Foreign currency exchange (gains) losses are included in other (income) expense, net and totaled $(0.2) million and $0.2 million during the three months ended March 31, 2024 and March 31, 2023, respectively.
Fair value measurements	Fair Value Measurements We utilize fair value measurements to account for certain items and account balances within our consolidated financial statements. Fair value measurements are utilized on a recurring basis in the determination of the carrying values of certain investments. See Note 7 - “Fair Value Measurements” for further discussion. Fair value measurements are also utilized on a nonrecurring basis in certain circumstances, including the impairment of long-lived assets (a Level 3 fair value measurement).
New accounting pronouncements	New Accounting Pronouncements Standards not yet adopted In November 2023, the FASB issued ASU 2023-07, “Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures” (“ASU 2023-07”), which is intended to improve reportable segments disclosures in annual and interim financial statements, primarily through expanded disclosures of significant segment expenses. ASU 2023-07 is effective for annual reporting periods beginning after December 15, 2023 and interim reporting periods beginning after December 15, 2024, with early adoption permitted. In December 2023, the FASB issued ASU 2023-09, “Income Taxes (Topic 740): Improvements to Income Tax Disclosures.” The new standard requires companies to disclose specific categories in the income tax rate reconciliation and provide additional information for reconciling items that meet a quantitative threshold. ASU 2023-09 is effective for annual reporting periods beginning after December 15, 2024, with early adoption permitted. The Company is currently evaluating the expected impact of these standards but does not expect them to have a significant impact on its consolidated financial statements upon adoption as the standards expand disclosures only.