Business and Organization	12 Months Ended
Business and Organization	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Business and Organization	Business and Organization Description of Business Astec Industries, Inc. 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's products are marketed both domestically and internationally primarily to asphalt producers; highway and heavy equipment contractors; utility contractors; sand and gravel producers; construction, demolition, recycle and crushing contractors; mine and quarry operators; port and inland terminal authorities; power stations and domestic and foreign government agencies. In addition to equipment sales, the Company manufactures and sells replacement parts for equipment in each of its product lines and replacement parts for some competitors' equipment. The distribution and sale of replacement parts is an integral part of the Company's business. The Company operates manufacturing sites and sites that operate as sales offices for the Company's manufacturing locations. During the first quarter of 2020, management completed an internal reorganization focused on transitioning from a decentralized management structure to a more centralized structure with major directives and decisions being made at the segment and/or parent company level. As a result of this reorganization, the Company's reportable segments were realigned moving from three to two reportable segments (plus Corporate) - 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 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 other reporting segments. Management evaluates performance and allocates resources to the operating segments based on profit or loss from operations before United States ("U.S.") federal income taxes, state deferred taxes and corporate overhead and, thus, these costs are included in the Corporate category. Amounts previously reported under the previous segment structure have been restated to conform to the new segment structure. COVID-19 Pandemic The COVID-19 pandemic has caused significant disruptions to national and global economies. Since its identification in March 2020, the COVID-19 pandemic has negatively disrupted the Company's business and results of operations and may continue to do so in the future. The full extent of the COVID-19 pandemic on the Company's operations and the markets it serves remains uncertain due to constantly evolving developments including, but not limited to, government directives, treatment availability and acceptance, vaccine mandates and the spread of new variants, such as the Delta and Omicron variants, and cannot be accurately predicted.