Cash and Cash Equivalents, Maturity Period

No definition available.

Name:	idti_CashAndCashEquivalentsMaturityPeriod
Namespace Prefix:	idti_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of significant customers that represent over 10% of the benchmark metric.

+ References

No definition available.

+ Details

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

- Definition

Customer Concentration Risk, Percentage

+ References

No definition available.

+ Details

Name:	idti_CustomerConcentrationRiskPercentage
Namespace Prefix:	idti_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Deferred Tax Recorded in Prepayments and Other Current Assets and Other Assets

+ References

No definition available.

+ Details

Name:	idti_DeferredTaxRecordedinPrepaymentsandOtherCurrentAssetsandOtherAssets
Namespace Prefix:	idti_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Extended Warranty Period

+ References

No definition available.

+ Details

Name:	idti_ExtendedWarrantyPeriod
Namespace Prefix:	idti_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of Revenue Channels

+ References

No definition available.

+ Details

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

- Definition

Standard Warranty Period

+ References

No definition available.

+ Details

Name:	idti_StandardWarrantyPeriod
Namespace Prefix:	idti_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_ConcentrationRiskLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=64851502&loc=d3e6351-108592

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13531-108611

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=64851502&loc=d3e6404-108592

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13537-108611

+ Details

Name:	us-gaap_ConcentrationRiskPercentage1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption.

+ References

No definition available.

+ Details

Name:	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ConcentrationRiskByTypeAxis=us-gaap_CustomerConcentrationRiskMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_AccountsReceivableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_MajorCustomersAxis=idti_UniquestMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_SalesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_MajorCustomersAxis=idti_AvnetMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_MajorCustomersAxis=idti_SignificantDistributor1Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_MajorCustomersAxis=idti_SignificantDistributor2Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AdjustmentsForNewAccountingPronouncementsAxis=idti_AccountingStandardsUpdate201609Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementEquityComponentsAxis=us-gaap_RetainedEarningsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_NewAccountingPronouncementEarlyAdoptionAxis=us-gaap_NewAccountingPronouncementEarlyAdoptionEffectMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Summary of Significant Accounting Policies - Narrative (Details) $ in Thousands	12 Months Ended
	Apr. 02, 2017 USD ($) channel distributor	Apr. 03, 2016 distributor	Mar. 29, 2015	Oct. 31, 2016 USD ($)	Apr. 04, 2016 USD ($)
Concentration Risk [Line Items]
Number of revenue channels (channels) \| channel	3
Standard warranty period	1 year
Extended warranty period	2 years
Deferred tax recorded in prepayments and other current assets and other assets				$ 4,900
Maximum
Concentration Risk [Line Items]
Maturity period of cash and cash equivalents	3 months
Customer Concentration Risk \| Accounts receivable
Concentration Risk [Line Items]
Number of significant distributors (distributors) \| distributor	2	2
Uniquest \| Customer Concentration Risk \| Sales
Concentration Risk [Line Items]
Concentration risk (percentage)	11.00%	16.00%	16.00%
Avnet \| Customer Concentration Risk \| Sales
Concentration Risk [Line Items]
Concentration risk (percentage)	10.00%	15.00%	14.00%
Significant Distributor 1 \| Customer Concentration Risk \| Accounts receivable
Concentration Risk [Line Items]
Customer concentration risk (percent)	11.00%	12.00%
Significant Distributor 2 \| Customer Concentration Risk \| Accounts receivable
Concentration Risk [Line Items]
Customer concentration risk (percent)	10.00%	10.00%
Accounting Standards Update 2016-09
Concentration Risk [Line Items]
Cumulative-effect adjustment from adoption of ASU No. 2016-09	$ 25,797
Accounting Standards Update 2016-09 \| Accumulated Deficit
Concentration Risk [Line Items]
Cumulative-effect adjustment from adoption of ASU No. 2016-09	$ 25,797
Accounting Standards Update 2016-09 \| Accumulated Deficit \| New Accounting Pronouncement, Early Adoption, Effect
Concentration Risk [Line Items]
Cumulative-effect adjustment from adoption of ASU No. 2016-09				$ 800	$ 25,800