Quarterly report pursuant to Section 13 or 15(d)

Goodwill - Summary of Changes in Carrying Amount of Goodwill (Detail)

v2.4.1.9
Goodwill - Summary of Changes in Carrying Amount of Goodwill (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Apr. 04, 2015
Goodwill [Line Items]  
Beginning balance $ 100,153us-gaap_Goodwill
Acquisition 20,325us-gaap_GoodwillAcquiredDuringPeriod
Foreign Currency Translation (848)us-gaap_GoodwillTranslationAdjustments
Ending balance 119,630us-gaap_Goodwill
Aerospace Segment [Member]  
Goodwill [Line Items]  
Beginning balance 100,153us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= atro_AerospaceSegmentMember
Acquisition 20,325us-gaap_GoodwillAcquiredDuringPeriod
/ us-gaap_StatementBusinessSegmentsAxis
= atro_AerospaceSegmentMember
Foreign Currency Translation (848)us-gaap_GoodwillTranslationAdjustments
/ us-gaap_StatementBusinessSegmentsAxis
= atro_AerospaceSegmentMember
Ending balance $ 119,630us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= atro_AerospaceSegmentMember