Summary of Significant Accounting Policies | BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES Principles of Consolidation Our consolidated financial statements include the accounts of our wholly owned subsidiaries. All intercompany accounts and transactions have been eliminated in consolidation. Out-of-Period Correction During the three months ended June 30, 2024, we discovered that we had not previously remeasured a prepaid tax balance denominated in a foreign currency at current rates, resulting in an overstatement of prepaid expenses and understatement of foreign exchange losses from 2018 through the current period. We corrected this by making an out-of-period adjustment during the three months ended June 30, 2024, which reduced other income, net by $1.4 million and reduced net income per share attributable to TETRA stockholders by $0.01 in the consolidated statement of operations for the year ended December 31, 2024. The Company assessed the impact of this out-of-period adjustment and concluded that it was not material to the financial statements previously issued for any interim or annual period, and the cumulative adjustment during the quarter ended June 30, 2024 is not material to the annual financial statements for 2024. The out-of-period adjustment is included in the Water & Flowback Services Division results. Restricted Cash Restricted cash is classified as a current asset when it is expected to be repaid or settled in the next twelve-month period. In connection with the May 2024 amendment to our ABL Credit Agreement, our former administrative agent required us to collateralize our outstanding letters of credit. See Note 10 - “Long-Term Debt and Other Borrowings” for additional discussion of the ABL Amendment. Restricted cash as of December 31, 2024 consists of $0.2 million to secure our outstanding letters of credit with our former administrative agent and is expected to terminate as the letters of credit expire by March 2025. Use of Estimates The preparation of financial statements in conformity with U.S. generally accepted accounting principles (“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. Reclassifications Certain previously reported financial information has been reclassified to conform to the current year’s presentation. Unless otherwise noted, amounts and disclosures throughout these Notes to Consolidated Financial Statements relate solely to continuing operations and exclude all discontinued operations. Discontinued Operations In early 2018, we closed a series of related transactions that resulted in the disposition of our former Offshore segment. We may be required to satisfy certain decommissioning liabilities under third-party indemnity agreements and corporate guarantees for which costs may be significant. During the year ended December 31, 2024, we accrued $5.8 million of decommissioning expense and liability associated with our former Offshore segment for which costs might be above the value of surety bonds on properties previously disposed. See Note 3 - “Discontinued Operations” and Note 11 - “Commitments and Contingencies” for additional discussion. Cash Equivalents We consider all highly liquid cash investments with a maturity of three months or less when purchased to be cash equivalents. Cash and cash equivalents include deposits in excess of federally insured amounts. Financial Instruments Financial instruments that subject us to concentrations of credit risk consist principally of trade receivables. Our policy is to evaluate, prior to providing goods or services, each customer’s financial condition and to determine the amount of open credit to be extended. We generally require appropriate, additional collateral as security for credit amounts in excess of approved limits. Our customers consist primarily of major, well-established oil and gas producers and independent oil and gas companies, as well as industrial, agricultural, road, and food and beverage purchasers for the chemicals we manufacture. Payment terms are on a short-term basis. We have currency exchange rate risk exposure related to transactions denominated in a foreign currency as well as to investments in certain of our international operations. Our risk management activities include the use of foreign currency forward purchase and sale derivative contracts as part of a program designed to mitigate the currency exchange rate risk exposure on selected international operations. We have no outstanding balance under our variable rate revolving credit facilities as of December 31, 2024. Outstanding balances on variable-rate bank credit facilities create market risk exposure related to changes in applicable interest rates. Allowance for Credit Losses The allowance for credit losses is determined on a specific identification basis when we believe that the collection of specific amounts owed to us is not probable, as well as a percentage of aged receivables based on historic losses. Changes in the allowance are as follows: Year Ended December 31, 2024 2023 2022 (In Thousands) At beginning of period $ 614 $ 538 $ 289 Activity in the period: Provision for credit losses 217 285 257 Account charge offs, net of recoveries (205) (209) (8) At end of period $ 626 $ 614 $ 538 Inventories Inventories are stated at the lower of cost or net realizable value. Except for work in progress inventory, cost is determined using the weighted average method. The cost of work in progress is determined using the specific identification method. Property, Plant, and Equipment Property, plant, and equipment are stated at cost. Expenditures that increase the useful lives of assets are capitalized. The cost of repairs and maintenance is charged to operations as incurred. Depreciation is computed using the straight-line method over the estimated useful lives of the assets, which are generally as follows: Buildings 25 years Machinery and equipment 3 – 10 years Automobiles and trucks 4 years Chemical plants 15 years Leasehold improvements are depreciated over the shorter of the remaining term of the associated lease or its useful life. Depreciation expense, excluding impairments and other charges, for the years ended December 31, 2024, 2023, and 2022 was $28.4 million, $29.2 million, and $27.3 million, respectively. Construction in progress as of December 31, 2024 and 2023 consisted primarily of equipment fabrication projects and early production facilities. During the year ended December 31, 2024, we capitalized $1.2 million of interest expense. Intangible Assets other than Goodwill Customer relationships, trademarks, tradenames, marketing rights and other intangible assets are amortized on a straight-line basis over their estimated useful lives, with remaining useful lives up to 9 years. Amortization of intangible assets was $4.2 million, $4.5 million, and $4.9 million for the years ended December 31, 2024, 2023, and 2022, respectively, and is included in depreciation, amortization, and accretion. The estimated future annual amortization expense of intangible assets is $3.5 million for 2025, $3.4 million for 2026, $3.2 million for 2027, $2.7 million for 2028, $2.4 million for 2029, and $9.7 million thereafter. See Note 5 - “Intangibles” for additional discussion. Intangible assets other than goodwill are tested for recoverability whenever events or changes in circumstances indicate that the carrying value of the asset may not be recoverable. In such an event, we will determine the fair value of the asset using an undiscounted cash flow analysis of the asset at the lowest level for which identifiable cash flows exist. If an impairment has occurred, we will recognize a loss for the difference between the carrying value and the estimated fair value of the intangible asset. Leases As a lessee, unless the lease meets the criteria of short-term and is excluded per our policy election described below, we initially recognize a lease liability and related right-of-use asset on the commencement date. The right-of-use asset represents our right to use an underlying asset and the lease liability represents our obligation to make lease payments to the lessor over the lease term. Long-term operating leases are included in operating lease right-of-use assets, operating lease liabilities - current portion, and operating lease liabilities in our consolidated balance sheets. Long-term finance leases are included in machinery and equipment, accrued liabilities and other and other liabilities in our consolidated balance sheets. We determine whether a contract is or contains a lease at inception of the contract. Where we are a lessee in a contract that includes an option to extend or terminate the lease, we include the extension period or exclude the period covered by the termination option in our lease term in determining the right-of-use asset and lease liability, if it is reasonably certain that we would exercise the option. As an accounting policy election, we do not include short-term leases on our balance sheets. Short-term leases include leases with a term of 12 months or less, inclusive of renewal options we are reasonably certain to exercise. The lease payments for short-term leases are included as operating lease costs on a straight-line basis over the lease term in cost of revenues or general and administrative expense based on the use of the underlying asset. We recognize lease costs for variable lease payments not included in the determination of a lease liability in the period in which an obligation is incurred. Our operating and finance leases are recognized at the present value of lease payments over the lease term. When the implicit discount rate is not readily determinable, we use our incremental borrowing rate to calculate the discount rate used to determine the present value of lease payments. Consistent with other long-lived assets or asset groups that are held and used, we test for impairment of our right-of-use assets when impairment indicators are present. Impairments of Inventory and Long-Lived Assets Impairments of inventory and long-lived assets, including identified intangible assets, are determined periodically when indicators of impairment are present. If such indicators are present, the determination of the amount of impairment is based on our judgments as to the future undiscounted operating cash flows to be generated from these assets throughout their remaining estimated useful lives. If these undiscounted cash flows are less than the carrying amount of the related asset, an impairment is recognized for the excess of the carrying value over its fair value. Assets held for disposal are recorded at the lower of carrying value or estimated fair value less estimated selling costs. See Note 6 - “Impairments and Other Charges” for additional discussion of recorded impairments. Revenue Recognition Performance Obligations. Revenue is generally recognized when we transfer control of our products or services to our customers. Revenue is measured as the amount of consideration we expect to receive in exchange for transferring products or providing services to our customers. We receive cash equal to the invoice price for most sales of product and services and payment terms typically range from 30 to 60 days from the date we invoice our customer. Since the period between when we deliver products or services and when the customer pays for such products or services is not expected to exceed one year, we have elected not to calculate or disclose a financing component for our customer contracts. Depending on the terms of the arrangement, we may also defer the recognition of revenue for a portion of the consideration received because we have to satisfy a future performance obligation. For any arrangements with multiple performance obligations, we use management’s estimated selling price to determine the stand-alone selling price for separate performance obligations. For revenue associated with mobilization of service equipment as part of a service contract arrangement, such revenue, if significant, is deferred and amortized over the estimated service period. Product Sales. Product sales revenues are recognized at a point in time when we transfer control of our product offerings to our customers, generally when we ship products from our facility to our customer. The product sales for our Completion Fluids & Products Division consist primarily of CBFs, additives, and associated manufactured products. Certain customers have bill-and-hold arrangements. Revenue for bill-and-hold arrangements is recognized when control transfers to the customer, even though the customer may not have physical possession of the product. Control transfers when there is a substantive reason for the arrangement, the product is identified as belonging to the customer, is ready for physical transfer, and cannot be directed for use by anyone but the customer. Product sales for our Water & Flowback Services Division are typically attributed to specific performance obligations within certain production testing service arrangements. Services . Service revenues represent revenue recognized over time, as our customer arrangements typically provide agreed upon day rates and we recognize service revenue based upon the number of days services have been performed. Service revenue recognized over time is associated with a majority of our Water & Flowback Services Division arrangements, and a small portion of Completion Fluids & Products Division revenue that is associated with completion fluid service arrangements. Our customer contracts are generally for terms of one year or less. The majority of the service arrangements in the Water & Flowback Services Division are for a period of 90 days or less. Sales taxes, value added taxes, and other taxes we collect concurrent with revenue-producing activities are excluded from revenue. We have elected to recognize the cost for freight and shipping costs as part of cost of product sales when control over our products (i.e., delivery) has transferred to the customer. Use of Estimates. In recognizing revenue for variable consideration arrangements, the amount of variable consideration recognized is limited so that it is probable that significant amounts of revenues will not be reversed in future periods when the uncertainty is resolved. For products returned by the customer, we estimate the expected returns based on an analysis of historical experience. For volume discounts earned by the customer, we estimate the discount (if any) based on our estimate of the total expected volume of products sold or services to be provided to the customer during the discount period. In certain contracts for the sale of CBFs, we may agree to issue credits for the repurchase of reclaimable used fluids from certain customers at an agreed price that is based on the condition of the fluids and, in some cases, the volume of fluids sold. Contract Assets and Liabilities. We consider contract assets to be trade accounts receivable when we have an unconditional right to consideration and only the passage of time is required before payment is due. In certain instances, particularly those requiring customer specific documentation prior to invoicing, our invoicing of the customer is delayed until certain documentation requirements are met. In those cases, we recognize a contract asset rather than a billed trade accounts receivable until we are able to invoice the customer. Contract assets, along with billed trade accounts receivable, are included in trade accounts receivable in our consolidated balance sheets. We classify contract liabilities as unearned income in our consolidated balance sheets. Unearned income includes amounts in which the Company was contractually allowed to invoice prior to satisfying the associated performance obligations. Operating Costs Cost of product sales includes direct and indirect costs of manufacturing and producing our products, including raw materials, fuel, utilities, labor, overhead, repairs and maintenance, materials, services, transportation, warehousing, equipment rentals, insurance, and certain taxes. Cost of services includes operating expenses we incur in delivering our services, including labor, equipment rental, fuel, repair and maintenance, transportation, overhead, insurance, and certain taxes. We include in product sales revenues the reimbursements we receive from customers for shipping and handling costs. Shipping and handling costs are included in cost of product sales. Amounts we incur for “out-of-pocket” expenses in the delivery of our services are recorded as cost of services. Reimbursements for “out-of-pocket” expenses we incur in the delivery of our services are recorded as service revenues. Depreciation, amortization, and accretion includes depreciation expense for all of our facilities, equipment and vehicles, amortization expense on our intangible assets, and accretion expense related to our decommissioning and other asset retirement obligations. We include in general and administrative expense all costs not identifiable to our specific product or service operations, including divisional and general corporate overhead, professional services, corporate office costs, sales and marketing expenses, insurance, and certain taxes. Exploration, Pre-Development Costs, and Collaborative Arrangement We are pursuing low-carbon energy initiatives that leverage our fluids and aqueous chemistry core competencies and our significant bromine and lithium resources, including our brine leases in Southwest Arkansas. In June 2023, we entered into a memorandum of understanding with Saltwerx, LLC (“Saltwerx”), an indirect wholly owned subsidiary of ExxonMobil Corporation, relating to a newly-proposed brine unit in the Smackover Formation in Southwest Arkansas and potential bromine and lithium production from brine produced from the unit. The memorandum of understanding includes an allocation of certain costs for the drilling of a brine production test well and other development operations, including front-end engineering and design studies for bromine and lithium production facilities. On January 8, 2024, we announced the completion of a technical resources report for the Evergreen Unit in Arkansas. During the year ended December 31, 2024, we capitalized approximately $22.4 million of costs, net of reimbursements from our partner, associated with the development of our properties in Arkansas. During the years ended December 31, 2023 and 2022, we incurred $12.1 million and $6.6 million, respectively, of exploration and pre-development costs. During the year ended December 31, 2023 we recorded $9.3 million in reimbursements associated with this arrangement. This income is included in other income, net in our consolidated statements of operations. Equity-Based Compensation We have various equity incentive compensation plans which provide for the granting of restricted common stock, options for the purchase of our common stock, and other performance-based, equity-based compensation awards to our executive officers, key employees, nonexecutive officers, and directors. Total equity-based compensation expense, net of taxes, for the years ended December 31, 2024, 2023, and 2022, was $6.3 million, $10.4 million, and $6.8 million, respectively. For further discussion of equity-based compensation, see Note 13 – “Equity-Based Compensation and Other”. Mineral Resources Arrangements We are party to agreements in which Standard Lithium Ltd. (“Standard Lithium”) has the right to explore, produce and extract lithium in our Arkansas leases as well as additional potential resources in the Mojave region of California. The Company received cash and stock of Standard Lithium (NYSE:SLI) under the terms of the arrangements. The cash and stock component of consideration received is initially recorded as unearned income based on the quoted market price at the time the stock is received, then recognized in income over the contract term. Deferred income balances were $1.0 million and $1.6 million as of December 31, 2024 and 2023, respectively, associated with the consideration received from Standard Lithium and are included in accrued liabilities and other in our consolidated balance sheets. During the years ended December 31, 2024, 2023, and 2022, income from this arrangement was $1.6 million, $3.0 million, and $3.3 million, respectively, from the value of cash and stock received, and $0.4 million, $(1.0) million and $(1.4) million, respectively, for unrealized gains (losses) on changes in the value of Standard Lithium stock held. We also recognized $15.5 million of income during 2022 from the sale of our shares in Standard Lithium. This income is included in other (income) expense, net in our consolidated statements of operations. See Note 14 - “Fair Value Measurements” for further discussion. Income Taxes Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax basis amounts. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect of a change in tax rates is recognized as income or expense in the period that includes the enactment date. We recognize deferred tax assets to the extent that we believe that these assets are more likely than not to be realized. In making such a determination, we consider available positive and negative evidence, including future reversals of existing taxable temporary differences, projected future taxable income, tax-planning strategies, and results of recent operations. If we determine that we would be able to realize our deferred tax assets in the future in excess of their net recorded amount, we would make an adjustment to the deferred tax asset valuation allowance, which would reduce the provision for income taxes. A portion of the carrying value of certain deferred tax assets are subject to a valuation allowance. See Note 15 – “Income Taxes” for further discussion. The global intangible low-taxed income (“GILTI’) provisions impose a tax on foreign income in excess of a deemed return on tangible assets of foreign corporations. We elected to account for GILTI as a period cost in the year the tax is incurred. We record uncertain tax positions on the basis of a two-step process in which (1) we determine whether it is more likely than not that the tax positions will be sustained on the basis of the technical merits of the position and (2) for those tax positions that meet the more-likely-than-not recognition threshold, we recognize the largest amount of tax benefit that is more than fifty percent likely to be realized upon ultimate settlement with the related tax authority. Tax Benefits Preservation Plan On February 28, 2023, the Board of Directors adopted a Tax Benefits Preservation Plan (the “Tax Plan”) designed to protect the availability of the Company’s net operating loss carryforwards (“NOLs”) and other tax attributes (collectively, the “Tax Attributes”), which may be utilized in certain circumstances to reduce the Company’s future income tax obligations. The Tax Plan is intended to reduce the likelihood that any changes in the Company’s investor base would limit the Company’s future use of its Tax Attributes as a result of the Company experiencing an “ownership change” under Section 382 (“Section 382”) of the Internal Revenue Code of 1986, as amended (the “Code”). If a corporation experiences an “ownership change,” any NOLs, losses or deductions attributable to a “net unrealized built-in loss” and other Tax Attributes could be substantially limited, and timing of the usage of such Tax Attributes could be substantially delayed. A corporation generally will experience an ownership change if one or more stockholders (or group of stockholders) who are each deemed to own at least 5% of the corporation’s stock increase their ownership by more than 50 percentage points over their lowest ownership percentage within a testing period (generally, a rolling three-year period). In adopting the Tax Plan, the Board of Directors declared a dividend of one Series A Junior Participating Preferred Stock purchase right (the “Rights”) for each outstanding share of Common Stock pursuant to the terms of the Tax Plan. Initially, each Right entitles the registered holder to purchase from the Company one one-thousandth of a share of Series A Junior Participating Preferred Stock, par value $0.01 per share, of the Company (the “Preferred Stock”) at a price of $20.00 per one one-thousandth of a share of Preferred Stock (the “Purchase Price”), subject to adjustment. The Rights will cause substantial dilution to a person or group that acquires 4.99% or more of the Common Stock (or to a person or group that already owns 4.99% or more of the Company’s Common Stock if such person or group acquires additional shares representing 2% of the Company’s then outstanding shares of Common Stock) without prior approval from the Board of Directors. The Rights will expire at the earliest of: (i) the close of business on February 28, 2026 (the “Final Expiration Date”); (ii) the time at which the Rights are redeemed pursuant to the Tax Plan, (iii) the time at which the Rights are exchanged pursuant to the Tax Plan; (iv) the closing of any merger or other acquisition transaction involving the Company pursuant to an agreement as described in the penultimate paragraph of Section 1.3 of the Tax Plan; (v) the close of business on the effective date of the repeal of Section 382 of the Code if the Board determines that the Tax Plan is no longer necessary or desirable for the preservation of the Tax Attributes; or (vi) the close of business on the first day of a taxable year of the Company following a Board determination that no Tax Attributes may be carried forward or otherwise utilized. The Tax Plan adopted by the Board of Directors is similar to plans adopted by other publicly held companies with significant NOLs or other substantial tax benefits and is not designed to prevent any action that the Board of Directors determines to be in the best interest of the Company and its stockholders. At the Company’s 2023 annual meeting of stockholders held on May 24, 2023, the Company’s stockholders ratified the adoption of the Tax Plan. The Rights are in all respects subject to and governed by the provisions of the Tax Plan. The foregoing summary provides only a general description of the Tax Plan and does not purport to be complete. The Tax Plan, which specifies the terms of the Rights and includes as Exhibit A the Form of Certificate of Designation of Series A Junior Participating Preferred Stock of the Company and as Exhibit B the Form of Right Certificate, is attached to the Company’s Current Report on Form 8-K, which was filed with the SEC on March 1, 2023, as Exhibit 4.1 and is incorporated herein by reference. The foregoing summary should be read together with the entire Tax Plan and is qualified in its entirety by reference to the Tax Plan. Noncontrolling Interests Noncontrolling interests represent third-party ownership in the net assets of the Company’s consolidated subsidiaries and are presented as a component of equity. The Company’s noncontrolling interests as of December 31, 2024 and 2023 consists primarily of the outside ownership of subsidiaries in Africa. Accumulated Other Comprehensive Income (Loss) Certain of our international operations maintain their accounting records in the local currencies that are their functional currencies. For these operations, the functional currency financial statements are converted to United States dollar equivalents, with the effect of the foreign currency translation adjustment reflected as a component of accumulated other comprehensive income (loss). Accumulated other comprehensive income (loss) is included in equity in the accompanying consolidated balance sheets and consists of the cumulative currency translation adjustments associated with such international operations. In addition, the change in the fair value of the convertible note, excluding the embedded option, is included in other comprehensive income (loss) in our consolidated statements of comprehensive income. The portion of our accumulated other comprehensive income (loss) attributable to the convertible note is subject to reclassifications to net income if or when we settle the convertible note. See Note 9 – “Investments” for further discussion of the convertible note. Income (Loss) per Common Share The calculation of basic and diluted earnings per share excludes losses attributable to noncontrolling interests. The calculation of basic earnings per share excludes any dilutive effects of equity awards. The calculation of diluted earnings per share includes the effect of equity awards, if dilutive, which is computed using the treasury stock method during the periods such equity awards were outstanding. See Note 16 – “Net Income Per Share” for further discussion of shares outstanding. Foreign Currency Translation We have designated the Euro, the British pound, the Canadian dollar, and the Brazilian real as the functional currencies for our operations in Finland and Sweden, the United Kingdom, Canada, and Brazil, respectively. The United States dollar is the designated functional currency for all of our other significant non-U.S. operations. The cumulative translation effects of translating the applicable accounts from the functional currencies into the U.S. dollar at current exchange rates are included as a separate component of equity. Foreign currency exchange (gains) and losses are included in other (income) expense, net, and totaled $3.8 million, $3.5 million, and $(1.1) million for the years ended December 31, 2024, 2023, and 2022, respectively. 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 9 – “Investments” and Note 14 - “Fair Value Measurements” for further discussion. Fair value measurements are also utilized on a nonrecurring basis in certain circumstances, such as in the allocation of purchase consideration for acquisition transactions to the assets and liabilities acquired, including intangible assets and goodwill (a Level 3 fair value measurement), the initial recording of our asset retirement obligations, and for the impairment of long-lived assets, including goodwill (a Level 3 fair value measurement). Supplemental Cash Flow Information Supplemental cash flow information from continuing and discontinued operations is as follows: Year Ended December 31, 2024 2023 2022 (in thousands) Supplemental cash flow information: Interest paid $ 21,680 $ 19,171 $ 15,669 Income taxes paid $ 5,956 $ 4,782 $ 3,270 December 31, 2023 2022 2021 (in thousands) Accrued capital expenditures $ 7,131 $ 5,171 $ 4,901 New Accounting Pronouncements Recently Adopted Accounting Pronouncement 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. This ASU impacts financial statement disclosure only and its adoption in the fourth quarter of 2024 is reflected in Note 17 - “Industry Segments and Geographic Information.” Standards not yet adopted In November 2024, the FASB issued Accounting Standards Update (“ASU”) 2024-03, “Income Statement–Reporting Comprehensive Income–Expense Disaggregation Disclosures (Subtopic 220-40)” ("ASU 2024-03"). ASU 2024-03 requires additional disclosures about certain expenses included in the income statement, including purchases of inventory, employee compensation, intangible asset amortization and depre |