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Concentration of Risk (Details) (Revenues [Member])
12 Months Ended
Mar. 29, 2015
Customer
Mar. 30, 2014
Mar. 31, 2013
Concentration Risk [Line Items]      
Maximum amount of revenue from top ten vendors (in hundredths) 41.00%tess_MaximumAmountOfRevenueFromVendorProductsSoldToCustomers 43.00%tess_MaximumAmountOfRevenueFromVendorProductsSoldToCustomers 42.00%tess_MaximumAmountOfRevenueFromVendorProductsSoldToCustomers
Maximum amount of revenue from the top ten customers (in hundredths) 20.00%tess_MaximumAmountOfRevenueFromTopTenCustomers 19.00%tess_MaximumAmountOfRevenueFromTopTenCustomers 39.00%tess_MaximumAmountOfRevenueFromTopTenCustomers
Maximum amount of revenue per single customer (in hundredths) 7.00%tess_MaximumAmountOfRevenueFromTopSingleCustomerThreshold 7.00%tess_MaximumAmountOfRevenueFromTopSingleCustomerThreshold  
Number of customers who account for concentration risk 0tess_ConcentrationRiskValue    
Customer Concentration Risk - AT&T Mobility Inc. [Member]
     
Concentration Risk [Line Items]      
Concentration risk percentage (in hundredths)     30.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueProductLineMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
Supplier Concentration Risk - Otter Products LLC [Member]
     
Concentration Risk [Line Items]      
Concentration risk percentage (in hundredths)     9.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueProductLineMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_SupplierConcentrationRiskMember
Supplier Concentration Risk - CommScope Incorporated [Member]
     
Concentration Risk [Line Items]      
Concentration risk percentage (in hundredths) 14.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueProductLineMember
/ us-gaap_ConcentrationRiskByTypeAxis
= tess_SupplierconcentrationriskcommscopeMember
16.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueProductLineMember
/ us-gaap_ConcentrationRiskByTypeAxis
= tess_SupplierconcentrationriskcommscopeMember