Annual report pursuant to Section 13 and 15(d)

Acquisitions - Summary of Sales and Amounts Included in Income from Operations of Subsidiary in Consolidated Financial Statements of Company (Detail)

v2.4.1.9
Acquisitions - Summary of Sales and Amounts Included in Income from Operations of Subsidiary in Consolidated Financial Statements of Company (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 12 Months Ended
Dec. 31, 2014
Sep. 27, 2014
Jun. 28, 2014
Mar. 29, 2014
Dec. 31, 2013
Sep. 28, 2013
Jun. 30, 2013
Mar. 30, 2013
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Business Acquisition [Line Items]                      
Sales $ 166,083us-gaap_SalesRevenueGoodsNet $ 179,442us-gaap_SalesRevenueGoodsNet $ 174,563us-gaap_SalesRevenueGoodsNet $ 140,951us-gaap_SalesRevenueGoodsNet $ 105,456us-gaap_SalesRevenueGoodsNet $ 89,681us-gaap_SalesRevenueGoodsNet $ 70,833us-gaap_SalesRevenueGoodsNet $ 73,967us-gaap_SalesRevenueGoodsNet $ 661,039us-gaap_SalesRevenueGoodsNet $ 339,937us-gaap_SalesRevenueGoodsNet $ 266,446us-gaap_SalesRevenueGoodsNet
Operating Income                 87,362us-gaap_OperatingIncomeLoss 42,305us-gaap_OperatingIncomeLoss 32,625us-gaap_OperatingIncomeLoss
Peco, Inc [Member]                      
Business Acquisition [Line Items]                      
Sales                   36,452us-gaap_SalesRevenueGoodsNet
/ us-gaap_BusinessAcquisitionAxis
= atro_PecoIncMember 		 
Operating Income                   $ 122us-gaap_OperatingIncomeLoss
/ us-gaap_BusinessAcquisitionAxis
= atro_PecoIncMember