XML 99 R84.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Note 16 - Employee Benefit Plans (Details Textual) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Deferred Compensation Liability, Classified, Noncurrent | $ 1,400 |
401(k) Plan [Member] |  |
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay | 10.00% |
Defined Contribution Plan Maximum Annual Employer Matching Contribution Per Employee Amount | $ 5 |
Defined Contribution Plan Employer Matching Contribution Vesting Period | 4 years |
Defined Contribution Plan, Employer Discretionary Contribution Amount | $ 776 | $ 776
The Ambrell Plan [Member] |  |
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay | 10.00% |
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent | 100.00% |
Defined Contribution Plan, Employer Matching Contribution, Percent of Match | 50.00% |
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Amount | $ 5 |
Defined Contribution Plan, Employer Discretionary Contribution Amount | $ 767 | $ 767

X
- Definition Defined contribution plan employer matching contribution vesting period. + References No definition available. + Details
Name: | intt_DefinedContributionPlanEmployerMatchingContributionVestingPeriod
Namespace Prefix: | intt_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Maximum dollar amount of employer's annual matching contribution to a defined contribution plan + References No definition available. + Details
Name: | intt_DefinedContributionPlanMaximumAnnualEmployerMatchingContributionPerEmployeeAmount
Namespace Prefix: | intt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements payable beyond one year (or the operating cycle, if longer). + References No definition available. + Details
Name: | us-gaap_DeferredCompensationLiabilityClassifiedNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of discretionary contributions made by an employer to a defined contribution plan. + References No definition available. + Details
Name: | us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. + References No definition available. + Details
Name: | us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage employer matches of the employee's percentage contribution matched. + References No definition available. + Details
Name: | us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Maximum amount the employee may contribute to a defined contribution plan. + References No definition available. + Details
Name: | us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeeAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan. + References No definition available. + Details
Name: | us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_RetirementPlanNameAxis=intt_The401KPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanNameAxis=intt_TheAmbrellPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |