Basis of Presentation and Significant Accounting Policies - Narrative (Details) $ in Thousands, R$ in Millions	3 Months Ended		12 Months Ended
	Dec. 31, 2024 USD ($)	Mar. 31, 2023 USD ($)	Dec. 31, 2025 USD ($)	Dec. 31, 2025 BRL (R$)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Product Information [Line Items]
Restricted cash	$ 2,500				$ 2,500	$ 3,400
Cash, cash equivalents and restricted cash	90,800				90,800	63,200
Other receivables, net current	3,300				3,300	3,400
Foreign currency translation adjustment	(51,100)				(51,100)	(38,100)
Revenue from contract with customer, total orders					24,500	16,000	$ 20,700
Advertising expense					2,100	1,800	2,100
Research and development expense					23,800	22,000	31,500
Derivative asset	0				0	0
Derivative financial instruments	$ 0				0	100
Cost of sales					(977,200)	(1,007,400)	(1,010,400)
Income tax provision					$ 9,800	9,100	5,000
Astec do Brasil Fabricacao de Equipamentos LTDA
Product Information [Line Items]
Consolidation less than wholly owned subsidiary parent ownership percentage	93.00%				93.00%
Adjustment
Product Information [Line Items]
Cost of sales		$ 1,900
Income tax provision	$ 2,700
Nonoperating Income (Expense)
Product Information [Line Items]
Foreign currency transaction gain (loss), before tax					$ (1,000)	1,100	(400)
Foreign Exchange Contract
Product Information [Line Items]
Average notional amount					14,100
Foreign Exchange Contract | Not Designated as Hedging Instrument | Other Operating Income (Expense)
Product Information [Line Items]
Gain/(loss) of derivative financial instruments recognized in income, net					(200)	(400)	$ (500)
General Liability
Product Information [Line Items]
Amount captive is liable per occurrence of claims					1,000
Workers' Compensation Insurance
Product Information [Line Items]
Amount captive is liable per occurrence of claims					$ 350
Minimum
Product Information [Line Items]
Standard product warranty description					three months
Maximum
Product Information [Line Items]
Standard product warranty description					two years
Trade receivables, contract assets and other receivables, net
Product Information [Line Items]
Allowance for credit loss						$ 700
Forecast
Product Information [Line Items]
Noncontrolling interest, decrease from redemptions or purchase of interests			$ 2,000	R$ 10.0
Subsidiary
Product Information [Line Items]
Noncontrolling interest, ownership percentage by parent	7.00%				7.00%