The amount of retention bonuses payable in cash as a result of business acquisition.

No definition available.

Name:	iti_BusinessCombinationAmountOfRetentionBonusesPayableInCash
Namespace Prefix:	iti_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The per share amount of shares granted in retention bonuses as a result of business acquisition.

+ References

No definition available.

+ Details

Name:	iti_BusinessCombinationPerShareAmountOfShareGranted
Namespace Prefix:	iti_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

The payable amount of retention bonuses to the Selling Shareholders and other employees as a result of business acquisition.

+ References

No definition available.

+ Details

Name:	iti_BusinessCombinationRetentionBonusesToSellingShareholdersAndOtherEmployees
Namespace Prefix:	iti_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of stock based compensation and salaries expense to selling, general and administrative expense in relation to business acquisition.

+ References

No definition available.

+ Details

Name:	iti_BusinessCombinationStockBasedCompensationAndSalariesExpense
Namespace Prefix:	iti_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The vesting period for shares granted in the retention bonus.

+ References

No definition available.

+ Details

Name:	iti_BusinessCombinationVestingPeriodForSharesGrantedAsRetentionBonus
Namespace Prefix:	iti_
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_BusinessAcquisitionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 23
-URI http://asc.fasb.org/extlink&oid=123586518&loc=d3e1043-128460

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_BusinessAcquisitionAxis=iti_AlbeckGerkenIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=iti_TrafficCastInternationalMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Acquisitions - Acquisition-Related Costs (Details) - USD ($) $ / shares in Units, $ in Millions		12 Months Ended
	Jul. 02, 2019	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
AGI
Acquisition
Retention bonuses	$ 1.7
Per share amount of granted shares (in dollars per share)	$ 5.22
Amount of retention bonuses payable in cash	$ 0.6
Vesting period	3 years
Stock based compensation and salaries expense		$ 0.7	$ 0.7	$ 1.0
Acquisition related costs				$ 0.7
TrafficCast International
Acquisition
Acquisition related costs			$ 0.4