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Commitments and Contingencies (Details) (USD $)
12 Months Ended 1 Months Ended
Mar. 29, 2015
Mar. 30, 2014
Mar. 31, 2013
Jan. 31, 2012
defendant
Loss Contingencies [Line Items]        
Maximum amount of potential future payments under various financial guarantees $ 1,700,000us-gaap_GuaranteeObligationsMaximumExposure      
Operating Leases, Future Minimum Payments Due [Abstract]        
2016 3,059,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent      
2017 2,564,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears      
2018 1,837,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears      
2019 1,525,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears      
2020 and thereafter 1,286,000idti_OperatingLeasesFutureMinimumPaymentsDueinYearFiveandThereafter      
Total 10,271,000us-gaap_OperatingLeasesFutureMinimumPaymentsDue      
Rent expense 4,200,000us-gaap_LeaseAndRentalExpense 4,600,000us-gaap_LeaseAndRentalExpense 4,700,000us-gaap_LeaseAndRentalExpense  
Other long-term supplier obligations 4,600,000us-gaap_LongTermPurchaseCommitmentAmount 4,200,000us-gaap_LongTermPurchaseCommitmentAmount    
Standard warranty period 1 year      
Extended warranty period 2 years      
Total warranty accrual $ 100,000us-gaap_ProductWarrantyAccrual $ 300,000us-gaap_ProductWarrantyAccrual    
Environmental Violation | Maxim I Properties Litigation        
Operating Leases, Future Minimum Payments Due [Abstract]        
Number of defendants       30us-gaap_LossContingencyNumberOfDefendants
/ us-gaap_LitigationCaseAxis
= idti_MaximIPropertiesLitigationMember
/ us-gaap_LossContingenciesByNatureOfContingencyAxis
= idti_EnvironmentalViolationMember