Quarterly report pursuant to Section 13 or 15(d)

Sales to Major Customers - Additional Information (Detail)

v2.4.1.9
Sales to Major Customers - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Apr. 04, 2015
Customer
Mar. 29, 2014
Customer
Segment Reporting, Asset Reconciling Item [Line Items]    
Number of major customers 2atro_NumberOfMajorCustomers  
Accounts receivable from major customers $ 21.2us-gaap_AccountsReceivableNet  
Aerospace Segment [Member]    
Segment Reporting, Asset Reconciling Item [Line Items]    
Number of major customers   2atro_NumberOfMajorCustomers
/ us-gaap_StatementBusinessSegmentsAxis
= atro_AerospaceSegmentMember
Sales Revenue, Net [Member] | Customer Concentration Risk [Member] | Aerospace and Test Systems Segment [Member] | Major Customer One [Member]    
Segment Reporting, Asset Reconciling Item [Line Items]    
Percent of consolidated revenue 24.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= atro_MajorCustomerOneMember
/ us-gaap_StatementBusinessSegmentsAxis
= atro_AerospaceAndTestSystemsSegmentMember
 
Sales Revenue, Net [Member] | Customer Concentration Risk [Member] | Aerospace and Test Systems Segment [Member] | Major Customer Two [Member]    
Segment Reporting, Asset Reconciling Item [Line Items]    
Percent of consolidated revenue 15.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= atro_MajorCustomerTwoMember
/ us-gaap_StatementBusinessSegmentsAxis
= atro_AerospaceAndTestSystemsSegmentMember
 
Sales Revenue, Net [Member] | Customer Concentration Risk [Member] | Aerospace Segment [Member] | Major Customer One [Member]    
Segment Reporting, Asset Reconciling Item [Line Items]    
Percent of consolidated revenue   20.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= atro_MajorCustomerOneMember
/ us-gaap_StatementBusinessSegmentsAxis
= atro_AerospaceSegmentMember
Sales Revenue, Net [Member] | Customer Concentration Risk [Member] | Aerospace Segment [Member] | Major Customer Two [Member]    
Segment Reporting, Asset Reconciling Item [Line Items]    
Percent of consolidated revenue   15.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= atro_MajorCustomerTwoMember
/ us-gaap_StatementBusinessSegmentsAxis
= atro_AerospaceSegmentMember