Basis of Presentation and Significant Accounting Policies	6 Months Ended
	Jun. 30, 2023
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 and markets equipment and components used primarily in 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 also manufactures certain equipment and components unrelated to road construction, including equipment for the mining, quarrying, construction and demolition 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, Astec Insurance Company ("Astec Insurance" or the "captive"), a captive insurance company, and the controls and automation business, which do not meet the requirements for separate disclosure as an operating segment or inclusion in one of the other 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, 2022. 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 attributable to noncontrolling interest" in the Consolidated Statements of Operations. The Company executed an agreement in February 2022 with the noncontrolling interest holder, which is undergoing a judicial reorganization in Brazil, 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 obtaining certain judicial approval in Brazil. 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 excess and obsolete inventory, inventory net realizable value, product warranty obligations, self-insurance loss reserves, capitalization of internal use software, goodwill 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 income (loss) for the three and six months ended June 30, 2023 and 2022, the financial position as of June 30, 2023 and December 31, 2022 and the cash flows for the six months ended June 30, 2023 and 2022, 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. Reclassifications and Adjustments Certain reclassifications have been made to the prior period financial information to conform to the presentation used in the financial statements for the six months ended June 30, 2023. •The Company elected to present research and development expenses in "Selling, general and administrative expenses". These amounts were previously included in a separate financial statement caption in the Consolidated Statements of Operations. •The Company reclassified certain accrued liability balances from "Other current liabilities" to "Accrued employee related liabilities" to more appropriately reflect the nature of such accrued balances. •The Company elected to present gains and losses recognized on the change in fair value of derivative instruments and foreign currency transaction gains and losses, net in "Other (expenses) income, net". These amounts were previously included in "Cost of sales". There was no change to previously reported "Total current liabilities" or "Net income (loss) attributable to controlling interest" related to these reclassifications. 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. Such adjustment was not considered material to the Company's consolidated financial statements for the year ended December 31, 2022 or any of the financial statements for the previously filed annual periods. Recently Adopted Accounting Pronouncements In October 2021, the Financial Accounting Standards Board issued Accounting Standards Update ("ASU") 2021-08, "Business Combinations (Topic 805): Accounting for Contract Assets and Contract Liabilities from Contracts with Customers", which requires entities to recognize and measure contract assets and contract liabilities acquired in a business combination in accordance with ASU 2014-09, Revenue from Contracts with Customers (Topic 606). The update will generally result in an entity recognizing contract assets and contract liabilities at amounts consistent with those recorded by the acquiree immediately before the acquisition date rather than at fair value. The new standard is effective on a prospective basis for fiscal years beginning after December 15, 2022, with early adoption permitted. The Company elected to early adopt this guidance on April 1, 2022. The adoption of this new standard did not have a material impact on its financial position, results of operations, cash flows or 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.