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BUSINESS SEGMENT INFORMATION (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Mar. 31, 2015
segment
Mar. 31, 2014
Mar. 31, 2013
BUSINESS SEGMENT INFORMATION      
Number of operating segments 1us-gaap_NumberOfOperatingSegments    
Geographical Data      
Net Sales and Contract Revenues $ 126,750us-gaap_SalesRevenueNet $ 190,249us-gaap_SalesRevenueNet $ 186,680us-gaap_SalesRevenueNet
Domestic      
Geographical Data      
Net Sales and Contract Revenues 52,130us-gaap_SalesRevenueNet
/ us-gaap_StatementGeographicalAxis
= country_US		 94,427us-gaap_SalesRevenueNet
/ us-gaap_StatementGeographicalAxis
= country_US		 123,652us-gaap_SalesRevenueNet
/ us-gaap_StatementGeographicalAxis
= country_US
International customer      
Geographical Data      
Net Sales and Contract Revenues $ 74,620us-gaap_SalesRevenueNet
/ us-gaap_StatementGeographicalAxis
= asei_InternationalMember		 $ 95,822us-gaap_SalesRevenueNet
/ us-gaap_StatementGeographicalAxis
= asei_InternationalMember		 $ 63,028us-gaap_SalesRevenueNet
/ us-gaap_StatementGeographicalAxis
= asei_InternationalMember
Assets. | International customer      
Geographical Data      
Percentage of concentration risk 4.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_AssetsTotalMember
/ us-gaap_StatementGeographicalAxis
= asei_InternationalMember		    
Net sales and contract revenues | Total sales      
Geographical Data      
Percentage of concentration risk 100.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember		 100.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember		 100.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
Net sales and contract revenues | Total sales | Domestic      
Geographical Data      
Percentage of concentration risk 41.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_StatementGeographicalAxis
= country_US		 50.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_StatementGeographicalAxis
= country_US		 66.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_StatementGeographicalAxis
= country_US
Net sales and contract revenues | Total sales | International customer      
Geographical Data      
Percentage of concentration risk 59.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_StatementGeographicalAxis
= asei_InternationalMember		 50.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_StatementGeographicalAxis
= asei_InternationalMember		 34.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_StatementGeographicalAxis
= asei_InternationalMember
Net sales and contract revenues | Total sales | Middle East & Africa      
Geographical Data      
Percentage of concentration risk 63.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_StatementGeographicalAxis
= asei_MiddleEastAndAfricaMember		 72.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_StatementGeographicalAxis
= asei_MiddleEastAndAfricaMember		 54.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_StatementGeographicalAxis
= asei_MiddleEastAndAfricaMember
Net sales and contract revenues | Total sales | Americas - Non-US      
Geographical Data      
Percentage of concentration risk 15.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_StatementGeographicalAxis
= asei_AmericasNonUSMember		 11.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_StatementGeographicalAxis
= asei_AmericasNonUSMember		 29.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_StatementGeographicalAxis
= asei_AmericasNonUSMember
Net sales and contract revenues | Total sales | Asia / Pacific      
Geographical Data      
Percentage of concentration risk 16.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_StatementGeographicalAxis
= us-gaap_AsiaPacificMember		 11.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_StatementGeographicalAxis
= us-gaap_AsiaPacificMember		 13.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_StatementGeographicalAxis
= us-gaap_AsiaPacificMember
Net sales and contract revenues | Total sales | Europe      
Geographical Data      
Percentage of concentration risk 6.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_StatementGeographicalAxis
= us-gaap_EuropeMember		 6.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_StatementGeographicalAxis
= us-gaap_EuropeMember		 4.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_StatementGeographicalAxis
= us-gaap_EuropeMember
Sales | Total sales | International customer | One individual country      
Geographical Data      
Percentage of concentration risk 16.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= asei_OneIndividualCountryMember
/ us-gaap_StatementGeographicalAxis
= asei_InternationalMember		 15.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= asei_OneIndividualCountryMember
/ us-gaap_StatementGeographicalAxis
= asei_InternationalMember		  
Sales | Total sales | International customer | One individual country | Maximum      
Geographical Data      
Percentage of concentration risk     10.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= asei_OneIndividualCountryMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_StatementGeographicalAxis
= asei_InternationalMember