Basis of Presentation and Significant Accounting Policies	6 Months Ended
	Jun. 30, 2024
Accounting Policies [Abstract]
Basis of Presentation and Significant Accounting Policies	Basis of Presentation and Significant Accounting Policies Description of Business Astec Industries, Inc. ("Astec" or the "Company") is a Tennessee corporation which was incorporated in 1972. The Company designs, engineers, manufactures, markets and services equipment and components used primarily in asphalt and concrete road building and related construction activities, as well as other products discussed below. The Company's products are used in each phase of road building, from quarrying and crushing the aggregate to application of the road surface. The Company's product portfolio includes both asphalt and concrete equipment. The Company also manufactures certain equipment and components unrelated to road construction, including equipment for the mining, quarrying, construction, demolition, land clearing and recycling industries and port and rail yard operators; industrial heat transfer equipment; commercial whole-tree pulpwood chippers; horizontal grinders; blower trucks; concrete plants; commercial and industrial burners; and combustion control systems. The Company operates in two reportable segments (plus Corporate and Other) - Infrastructure Solutions and Materials Solutions. The Company's two reportable business segments comprise sites based upon the nature of the products or services produced, the type of customer for the products, the similarity of economic characteristics, the manner in which management reviews results and the nature of the production process, among other considerations. The Corporate and Other category consists primarily of the parent company and Astec Insurance Company ("Astec Insurance" or the "captive"), a captive insurance company, which do not meet the requirements for separate disclosure as an operating segment or inclusion in one of the reporting segments. Basis of Presentation The accompanying unaudited consolidated financial statements include the accounts of Astec and its subsidiaries and have been prepared by the Company, pursuant to the rules and regulations of the U.S. Securities and Exchange Commission ("SEC"). The Company prepares its financial statements in accordance with accounting principles generally accepted in the U.S. ("U.S. GAAP"). Certain information and footnote disclosures normally included in annual consolidated financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to the SEC rules and regulations governing interim financial statements. However, the Company believes that the disclosures made in the unaudited consolidated financial statements and related notes are adequate to make the information presented not misleading. These consolidated financial statements should be read in conjunction with the Company's audited consolidated financial statements and notes thereto included in the Company's Annual Report on Form 10-K for the year ended December 31, 2023. All intercompany balances and transactions between the Company and its affiliates have been eliminated in consolidation. Noncontrolling interest in the Company's consolidated financial statements represents the 7% interest in a consolidated subsidiary which is not owned by the Company. Since the Company controls this subsidiary, the subsidiary's financial statements are consolidated with those of the Company, and the noncontrolling owner's 7% share of the subsidiary's net assets and results of operations is deducted and reported as "Noncontrolling interest" in the Consolidated Balance Sheets and as "Net (income) loss attributable to noncontrolling interest" in the Consolidated Statements of Operations. The Company executed an agreement in February 2022 with the noncontrolling interest holder to acquire their outstanding interest in full for R$10.0M (approximately $2.0 million, subject to the effect of exchange rates). Completion of the transaction is subject to resolution of certain disputes between the parties. The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported and disclosed in the consolidated financial statements and accompanying notes. Significant items subject to such estimates and assumptions include inventory net realizable value, product warranty obligations, self-insurance loss reserves, capitalization of internal use software, goodwill and other intangible assets impairment and the measurement of income tax assets and liabilities. The Company bases its estimates on historical experience and on various other assumptions that the Company believes to be reasonable under the circumstances. On an ongoing basis, the Company evaluates these assumptions, judgments and estimates. Actual results could differ from those estimates. In the opinion of management, the consolidated financial statements contain all adjustments necessary for a fair statement of the results of operations and comprehensive (loss) income for the three and six months ended June 30, 2024 and 2023, the financial position as of June 30, 2024 and December 31, 2023 and the cash flows for the six months ended June 30, 2024 and 2023, and, except as otherwise discussed herein, such adjustments consist only of those of a normal recurring nature. The interim results are not necessarily indicative of results that may be achieved in a full reporting year. All dollar amounts, except share and per share amounts, are in millions of dollars unless otherwise indicated. Adjustments During the first quarter of 2023, the Company identified immaterial errors associated with over-accruals of inventory-related expenses in its historical financial statements. The cumulative effect of the errors generated in 2021 and 2022 was corrected during the first quarter of 2023, resulting in a decrease in "Cost of sales" of $1.9 million. Recently Issued Accounting Pronouncements Not Yet Adopted In November 2023, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2023-07, "Segment Reporting (Topic 280): Improvement to Reportable Segment Disclosures," which requires entities to disclose significant segment expenses, other segment items, the title and position of the chief operating decision maker ("CODM") and information related to how the CODM assesses segment performance and allocates resources, among certain other required disclosures. Additionally, current annual disclosures will be required in interim periods. The new standard is effective, on a retrospective basis, for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024, with early adoption permitted. The Company is currently evaluating the impact this ASU will have on its financial statement disclosures. In December 2023, the FASB issued ASU 2023-09, "Income Taxes (Topic 740): Improvements to Income Tax Disclosures," which requires entities to disclose specific categories in the income tax rate reconciliation and provide additional information for reconciling items that meet a specified quantitative threshold. In addition, the new standard requires disclosure of the amount of income taxes paid disaggregated by federal, state and foreign taxes and by jurisdiction for exceeding a specified quantitative threshold. Additionally, income or loss from continuing operations before income tax will be required to be disaggregated between domestic and foreign classifications and income tax expense will be required to be disaggregated between federal, state and foreign classifications. The new standard is effective for fiscal years beginning after December 15, 2024 on a prospective basis, with retrospective application permitted. The Company is currently evaluating the impact this ASU will have on its financial statement disclosures. In March 2024, the SEC adopted the final rule under SEC Release No. 33-11275, "The Enhancement and Standardization of Climate-Related Disclosures for Investors," which will require registrants to disclose certain climate-related information in registration statements and annual reports. On April 4, 2024, the SEC voluntarily stayed the effective date of the final rule pending judicial review of petitions challenging it, which have been consolidated for review by the U.S. District Court of Appeals for the 8th Circuit. Notwithstanding any changes as a result of these challenges, the disclosure requirements will apply to the Company's fiscal year beginning January 1, 2025. The Company is currently evaluating the impact this final rule will have on its financial statement disclosures. Recent accounting guidance not discussed above is not applicable, did not have, or is not expected to have a material impact on the Company.