Contingent Matters (Details) - USD ($) $ in Thousands		12 Months Ended
	Aug. 16, 2018	Dec. 31, 2019
Loss Contingency [Abstract]
Contingent liability for customer debt		$ 1,466
Percentage of potential contingent liability on unpaid balance		1.75%
Maximum exposure		$ 932
Liability recorded related to guarantees		$ 1,666
Maximum maturity date of customer debt		Dec. 31, 2023
VenVer S.A. and Americas Coil Tubing LLP vs GEFCO [Member]
Loss Contingency [Abstract]
Damages sought for purchase price of equipment	$ 8,500
Maximum [Member]
Loss Contingency [Abstract]
Contingent liabilities for letters of credit		$ 10,958
Letter of Credit Lender [Member]
Loss Contingency [Abstract]
Contingent liabilities for letters of credit		8,335
Astec Brazil Working Capital Loans [Member]
Loss Contingency [Abstract]
Contingent liabilities for letters of credit issued on behalf of foreign subsidiaries		$ 3,200
Letter of Credit [Member] | Maximum [Member]
Loss Contingency [Abstract]
Letter of credit expiration date		Jan. 31, 2021
Performance Letters of Credit [Member]
Loss Contingency [Abstract]
Contingent liabilities for letters of credit issued on behalf of foreign subsidiaries		$ 2,623