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v3.26.1

Product Warranty Reserves - Narrative (Details) | 3 Months Ended
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Mar. 31, 2026
Minimum |
Product Warranty Liability [Line Items] |
Standard product warranty, warranty period | 3 months
Maximum |
Product Warranty Liability [Line Items] |
Standard product warranty, warranty period | 2 years

X
- Definition Standard Product Warranty, Warranty Period + References No definition available. + Details
Name: | aste_StandardProductWarrantyWarrantyPeriod
Namespace Prefix: | aste_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ProductWarrantyLiabilityLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |