LONG TERM DEBT AND NOTES PAYABLE TO BANK (Bank of America) (Details) - USD ($)	Nov. 09, 2018	Dec. 31, 2018
BofA Loan Agreement [Member]
Debt Instrument [Line Items]
Face amount	$ 10,000,000
Increase in interest rate during a continuance of an Event of Default	2.00%
Closing fees	$ 50,000
Administrative fees	$ 10,000
Notice period to terminate agreement	30 days
Amount available under facility		$ 4,100,000
Revolving Loan [Member]
Debt Instrument [Line Items]
Face amount	$ 1,000,000
Interest rate, description of variable rate basis	LIBOR
Revolving Loan [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Interest rate, basis spread on variable rate	2.25%
Revolving Loan [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Interest rate, basis spread on variable rate	2.75%
Term Loan [Member]
Debt Instrument [Line Items]
Face amount	$ 2,500,000
Interest rate, description of variable rate basis	LIBOR
Consecutive installments of loan	$ 89,300
Term Loan [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Interest rate, basis spread on variable rate	2.75%
Term Loan [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Interest rate, basis spread on variable rate	3.25%

Amount of the administrative fees associated with the credit facility.

No definition available.

Name:	idsa_LineOfCreditFacilityAdministrativeFee
Namespace Prefix:	idsa_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of the closing fees associated with the credit facility.

+ References

No definition available.

+ Details

Name:	idsa_LineOfCreditFacilityClosingFee
Namespace Prefix:	idsa_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Notice period to terminate agreement, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	idsa_LineOfCreditFacilityNoticePeriodToTerminateAgreement
Namespace Prefix:	idsa_
Data Type:	xbrli:durationItemType
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

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ References

No definition available.

+ Details

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

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

+ Details

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

- Definition

Incremental percentage increase (decrease) in the stated rate on a debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentInterestRateIncreaseDecrease
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
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_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of the required periodic payments including both interest and principal payments.

+ 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 http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

+ Details

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

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

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

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

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Namespace Prefix:
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Balance Type:
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- Details

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Namespace Prefix:
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- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
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- Details

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