XML 34 R42.htm IDEA: XBRL DOCUMENT
v3.20.1

Note 7 - Leases (Details Textual) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2020 | Mar. 31, 2019 | Jan. 23, 2020
Operating Lease, Right-of-Use Asset, Amortization Expense | $ 325 | $ 306 |
Lease Agreement, EMS Facility in Fremont, California [Member] |  |  |
Lessee, Operating Lease, Renewal Term (Month) |  |  | 5 years 30 days
Increase in Operating Lease Liabilities and Right-of-Use Assets, Non-cash | $ 1,176 |  |
Lease Agreement, Ambrell’s U.K [Member] |  |  |
Lessee, Operating Lease, Term of Contract (Year) |  | 15 years |
Decrease In Operating Lease Liabilities and Right-of-Use Assets, Non-cash |  | $ 486 |

X
- Definition Represents the non-cash decrease in operating lease liabilities and right-of-use assets. + References No definition available. + Details
Name: | intt_DecreaseInOperatingLeaseLiabilitiesAndRightOfUseAssetsNonCash
Namespace Prefix: | intt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Represents the non-cash increase in operating lease liabilities and right-of-use assets. + References No definition available. + Details
Name: | intt_IncreaseInOperatingLeaseLiabilitiesAndRightofuseAssetsNonCash
Namespace Prefix: | intt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918673-209980 + Details
Name: | us-gaap_LesseeOperatingLeaseRenewalTerm
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

X
- Definition Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918673-209980 + Details
Name: | us-gaap_LesseeOperatingLeaseTermOfContract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of amortization expense for right-of-use asset from operating lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 + Details
Name: | us-gaap_OperatingLeaseRightOfUseAssetAmortizationExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_LeaseContractualTermAxis=intt_LeaseAgreementEMSFacilityInFremontCaliforniaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LeaseContractualTermAxis=intt_LeaseAgreementAmbrellsUKMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |