Bank guarantee Amount.

No definition available.

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Balance Type:	debit
Period Type:	instant

- Definition

The percentage of collateral as defined in the debt agreement.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Line of credit not exceed.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Pledged Assets.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Replacement of amount of letter of credit.

+ References

No definition available.

+ Details

Name:	ictsf_ReplacementOfAmountOfLetterOfCreditTypeMessage
Namespace Prefix:	ictsf_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Unused line fee.

+ References

No definition available.

+ Details

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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 6
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=123466204&loc=SL6036836-161870

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI https://asc.fasb.org/extlink&oid=124435984&loc=d3e28551-108399

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 50
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-URI https://asc.fasb.org/extlink&oid=124429444&loc=SL124452920-239629

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	na
Period Type:	instant

- 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

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=124440162&loc=d3e12069-110248

+ Details

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

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
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-Subparagraph (SX 210.9-03(16))
-URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878

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-Name Accounting Standards Codification
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-Subparagraph (SX 210.7-03(16))
-URI https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910

+ Details

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

- Definition

The effective interest rate during the reporting period.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
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Period Type:	duration

- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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NOTES PAYABLE - BANKS (Narrative) (Details) € in Thousands, kr in Thousands, $ in Thousands	1 Months Ended
	Mar. 31, 2022 EUR (€)	Oct. 31, 2021 USD ($)	Mar. 31, 2021 EUR (€)	Jun. 30, 2022 SEK (kr)	Jun. 30, 2022 USD ($)	Dec. 31, 2021 EUR (€)	Dec. 31, 2021 SEK (kr)	Dec. 31, 2021 USD ($)
Debt Instrument [Line Items]
Outstanding guarantees						€ 1,022		$ 1,161
Replacement of amount of letter of credit		$ 500
Commercial bank [Member] \| Bank Guarantee Facility [Member]
Debt Instrument [Line Items]
Interest rate	2.50%
Unused line fee	0.75%
United States [Member]
Debt Instrument [Line Items]
Line of credit, maximum borrowing amount		$ 10,000
Europe [Member]
Debt Instrument [Line Items]
Bank guarantee Amount \| €			€ 2,000
Europe [Member] \| Bank Guarantee Facility [Member]
Debt Instrument [Line Items]
Line of credit, maximum borrowing amount	€ 2,500							2,841
Europe [Member] \| Commercial bank [Member]
Debt Instrument [Line Items]
Line of credit not exceed			70.00%
Line of Credit [Member] \| United States [Member]
Debt Instrument [Line Items]
Credit facility, amount outstanding					$ 0			0
Line of Credit [Member] \| United States [Member] \| LIBOR [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate basis points above reference rate		3.00%
Line of Credit [Member] \| Standby Letters of Credit [Member]
Debt Instrument [Line Items]
Percentage of collateral		95.00%
Line of Credit [Member] \| Accounts Receivable [Member] \| United States [Member]
Debt Instrument [Line Items]
Percentage of collateral		85.00%
Line of Credit [Member] \| Unbilled Accounts Receivable [Member]
Debt Instrument [Line Items]
Pledged Assets		$ 500
Line of Credit [Member] \| Unbilled Accounts Receivable [Member] \| United States [Member]
Debt Instrument [Line Items]
Percentage of collateral		80.00%
Line of Credit Europe [Member] \| Europe [Member]
Debt Instrument [Line Items]
Line of credit, maximum borrowing amount \| €			€ 12,000
Debt instrument, interest rate basis points above reference rate			4.80%
Unused line fee			0.75%
Line of Credit Europe [Member] \| Europe [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate basis points above reference rate			4.80%
Line of Credit Europe [Member] \| Sweden [Member]
Debt Instrument [Line Items]
Line of credit, maximum borrowing amount				kr 4,000	$ 389
Debt instrument, effective interest rate				2.80%	2.80%
Line of Credit Ten [Member] \| Sweden [Member]
Debt Instrument [Line Items]
Credit facility, amount outstanding				kr 1,715	$ 167		kr 1,800	$ 199