Basis of Presentation (Details)	9 Months Ended
Jan. 01, 2012
Basis of Presentation [Abstract]
Minimum number of weeks in the fiscal year reporting calendar (in weeks)	52
Maximum number of weeks in the fiscal year reporting calendar (in weeks)	53
Minimum number of weeks in a fiscal quarter (in weeks)	13
Maximum number of weeks in a fiscal quarter (in weeks)	14

The maximum number of weeks in the fiscal year reporting calendar with the last day of each reporting period ending on a Sunday.

No definition available.

Name:	idti_MaximumNumberOfWeeksInFiscalYearReportingCalendar
Namespace Prefix:	idti_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration