Annual report pursuant to Section 13 and 15(d)

Acquisitions - Consolidated Results of Operation of Company with Acquired Business (Detail)

v2.4.1.9
Acquisitions - Consolidated Results of Operation of Company with Acquired Business (Detail) (Peco, Inc [Member], USD $)
In Thousands, except Per Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Peco, Inc [Member]
   
Business Acquisition [Line Items]    
Sales $ 386,170us-gaap_BusinessAcquisitionsProFormaRevenue
/ us-gaap_BusinessAcquisitionAxis
= atro_PecoIncMember
$ 344,233us-gaap_BusinessAcquisitionsProFormaRevenue
/ us-gaap_BusinessAcquisitionAxis
= atro_PecoIncMember
Net income $ 29,456us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss
/ us-gaap_BusinessAcquisitionAxis
= atro_PecoIncMember
$ 24,348us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss
/ us-gaap_BusinessAcquisitionAxis
= atro_PecoIncMember
Basic earnings per share $ 1.40us-gaap_BusinessAcquisitionProFormaEarningsPerShareBasic
/ us-gaap_BusinessAcquisitionAxis
= atro_PecoIncMember
$ 1.18us-gaap_BusinessAcquisitionProFormaEarningsPerShareBasic
/ us-gaap_BusinessAcquisitionAxis
= atro_PecoIncMember
Diluted earnings per share $ 1.34us-gaap_BusinessAcquisitionProFormaEarningsPerShareDiluted
/ us-gaap_BusinessAcquisitionAxis
= atro_PecoIncMember
$ 1.12us-gaap_BusinessAcquisitionProFormaEarningsPerShareDiluted
/ us-gaap_BusinessAcquisitionAxis
= atro_PecoIncMember