Seasonality (Details)	9 Months Ended
Sep. 30, 2013
Seasonality [Abstract]
Percentage of annual revenues occur during the period, minimum(in hundredths)	73.00%
Percentage of annual revenues occur during the period, maximum (in hundredths)	75.00%

Annual revenue seasonal trend for the period, lower percentage range.

No definition available.

Name:	aste_AnnualRevenueSeasonalTrendForPeriodLowerPercentageRange
Namespace Prefix:	aste_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration