The cash outflow associated with the acquisition of business which is held in escrow during the period.

No definition available.

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Namespace Prefix:	aste_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Period of time for amount held in escrow and is subject to certain post-closing adjustments.

+ References

No definition available.

+ Details

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- Definition

Date when the acquirer obtains control of the acquiree, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=34752592&loc=d3e845-128460

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56956515&loc=d3e1392-128463

+ Details

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Balance Type:	na
Period Type:	duration

- 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

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=56956515&loc=d3e1392-128463

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Balance Type:	na
Period Type:	instant

- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 7
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+ Details

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- Definition

This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to items of consideration transferred in connection with a business combination for which the initial accounting was incomplete.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-SubTopic 10
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Balance Type:	credit
Period Type:	duration

- Definition

The amount of identifiable intangible assets recognized as of the acquisition date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
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Balance Type:	debit
Period Type:	instant

- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
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- Details

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Business Combinations (Details) - USD ($) $ in Thousands		12 Months Ended
Business Combinations (Details) - USD ($) $ in Thousands	Apr. 02, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Business Acquisition [Line Items]
Goodwill		$ 30,835	$ 31,995	$ 15,057
Minimum [Member]
Business Acquisition [Line Items]
Useful life of intangible assets		3 years
Maximum [Member]
Business Acquisition [Line Items]
Useful life of intangible assets		15 years
Telestack Limited [Member]
Business Acquisition [Line Items]
Date of acquisition		Apr. 01, 2014
Percentages of stock acquired	100.00%
Cash purchase price	$ 36,183
Amount held in escrow	$ 2,500
Period of time for amount held in escrow	1 year
Decrease in purchase price	$ (178)
Goodwill	18,078
Other intangible assets	$ 14,445
Telestack Limited [Member] \| Trade Names [Member]
Business Acquisition [Line Items]
Useful life of intangible assets	15 years
Telestack Limited [Member] \| Patents [Member] \| Minimum [Member]
Business Acquisition [Line Items]
Useful life of intangible assets	5 years
Telestack Limited [Member] \| Patents [Member] \| Maximum [Member]
Business Acquisition [Line Items]
Useful life of intangible assets	10 years
Telestack Limited [Member] \| Noncompete agreements [Member]
Business Acquisition [Line Items]
Useful life of intangible assets	3 years
Telestack Limited [Member] \| Customer relationships [Member]
Business Acquisition [Line Items]
Useful life of intangible assets	11 years