Debt	3 Months Ended
Mar. 31, 2016
Debt [Abstract]
Debt	Note 7. Debt On April 12, 2012, the Company and certain of its subsidiaries entered into an amended and restated credit agreement whereby Wells Fargo extended to the Company an unsecured line of credit of up to $100,000, including a sub-limit for letters of credit of up to $25,000. There were no borrowings outstanding under the agreement at any time during the three-month period ended March 31, 2016. Letters of credit totaling $17,569, including $11,874 of letters of credit issued to banks in Brazil to secure the local debt of Astec do Brasil Fabricacao de Equipamentos Ltda. (“Astec Brazil”), were outstanding under the credit facility as of March 31, 2016, resulting in additional borrowing ability of $82,431 under the credit facility. The credit agreement has a five-year term expiring in April 2017. Borrowings under the agreement are subject to an interest rate equal to the daily one-month LIBOR rate plus a 0.75% margin, resulting in a rate of 1.19% as of March 31, 2016. The unused facility fee is 0.175%. Interest only payments are due monthly. The amended and restated credit agreement contains certain financial covenants, including provisions concerning required levels of annual net income, minimum tangible net worth and maximum allowed capital expenditures. The Company was in compliance with these covenants as of March 31, 2016. The Company’s South African subsidiary, Osborn Engineered Products SA (Pty) Ltd (“Osborn”), has a credit facility of $6,457 with a South African bank to finance short-term working capital needs, as well as to cover performance letters of credit, advance payment and retention guarantees. As of March 31, 2016, Osborn had no borrowings outstanding under the facility but did have $1,351 in performance, advance payment and retention guarantees outstanding under the facility. The facility has been guaranteed by Astec Industries, Inc., but is otherwise unsecured. A 0.75% unused facility fee is charged if less than 50% of the facility is utilized. As of March 31, 2016, Osborn had available credit under the facility of $5,106. The interest rate is 0.25% less than the South Africa prime rate, resulting in a rate of 10.5% as of March 31, 2016. The Company’s Brazilian subsidiary, Astec Brazil, has outstanding working capital loans totaling $9,502 from three Brazilian banks with interest rates ranging from 10.4% to 20.8%. The loans’ maturity dates range from December 2016 to April 2024 and the debts are secured by Astec Brazil’s manufacturing facility and also by letters of credit totaling $11,874 issued by Astec Industries, Inc. Additionally, Astec Brazil has various 5-year equipment financing loans outstanding with two Brazilian banks in the aggregate of $1,421 as of March 31, 2016 that have interest rates ranging from 3.5% to 16.3%. These equipment loans have maturity dates ranging from September 2018 to April 2020. Astec Brazil’s loans are included in the accompanying balance sheets as current maturities of long-term debt ($4,662) and long-term debt ($6,261).

Note 7. Debt

On April 12, 2012, the Company and certain of its subsidiaries entered into an amended and restated credit agreement whereby Wells Fargo extended to the Company an unsecured line of credit of up to $100,000, including a sub-limit for letters of credit of up to $25,000. There were no borrowings outstanding under the agreement at any time during the three-month period ended March 31, 2016. Letters of credit totaling $17,569, including $11,874 of letters of credit issued to banks in Brazil to secure the local debt of Astec do Brasil Fabricacao de Equipamentos Ltda. (“Astec Brazil”), were outstanding under the credit facility as of March 31, 2016, resulting in additional borrowing ability of $82,431 under the credit facility. The credit agreement has a five-year term expiring in April 2017. Borrowings under the agreement are subject to an interest rate equal to the daily one-month LIBOR rate plus a 0.75% margin, resulting in a rate of 1.19% as of March 31, 2016. The unused facility fee is 0.175%. Interest only payments are due monthly. The amended and restated credit agreement contains certain financial covenants, including provisions concerning required levels of annual net income, minimum tangible net worth and maximum allowed capital expenditures. The Company was in compliance with these covenants as of March 31, 2016.

The Company’s South African subsidiary, Osborn Engineered Products SA (Pty) Ltd (“Osborn”), has a credit facility of $6,457 with a South African bank to finance short-term working capital needs, as well as to cover performance letters of credit, advance payment and retention guarantees. As of March 31, 2016, Osborn had no borrowings outstanding under the facility but did have $1,351 in performance, advance payment and retention guarantees outstanding under the facility. The facility has been guaranteed by Astec Industries, Inc., but is otherwise unsecured. A 0.75% unused facility fee is charged if less than 50% of the facility is utilized. As of March 31, 2016, Osborn had available credit under the facility of $5,106. The interest rate is 0.25% less than the South Africa prime rate, resulting in a rate of 10.5% as of March 31, 2016.

The Company’s Brazilian subsidiary, Astec Brazil, has outstanding working capital loans totaling $9,502 from three Brazilian banks with interest rates ranging from 10.4% to 20.8%. The loans’ maturity dates range from December 2016 to April 2024 and the debts are secured by Astec Brazil’s manufacturing facility and also by letters of credit totaling $11,874 issued by Astec Industries, Inc. Additionally, Astec Brazil has various 5-year equipment financing loans outstanding with two Brazilian banks in the aggregate of $1,421 as of March 31, 2016 that have interest rates ranging from 3.5% to 16.3%. These equipment loans have maturity dates ranging from September 2018 to April 2020. Astec Brazil’s loans are included in the accompanying balance sheets as current maturities of long-term debt ($4,662) and long-term debt ($6,261).