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Segment Reporting - Geographic Areas (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 29, 2015
Mar. 30, 2014
Segment Reporting Information [Line Items]    
Total property, plant and equipment, net $ 65,508idti_PropertyPlantAndEquipmentByGeographicArea $ 69,827idti_PropertyPlantAndEquipmentByGeographicArea
United States    
Segment Reporting Information [Line Items]    
Long-lived assets 38,879us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= country_US		 40,561us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= country_US
Canada    
Segment Reporting Information [Line Items]    
Long-lived assets 3,997us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= country_CA		 4,660us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= country_CA
Malaysia    
Segment Reporting Information [Line Items]    
Long-lived assets 21,244us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= country_MY		 20,972us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= country_MY
All other countries    
Segment Reporting Information [Line Items]    
Long-lived assets $ 1,388us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= idti_AllOtherCountriesMember		 $ 3,634us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= idti_AllOtherCountriesMember