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SALES-TYPE LEASES (Details)	12 Months Ended
SALES-TYPE LEASES (Details)	Dec. 31, 2012
Capital Leases of Lessor [Abstract]
Lease term	5 years

X

- Definition

Capital Leases, Sales Type Leases, Lease Term

+ References

No definition available.

+ Details

Name:	idsa_CapitalLeasesSalesTypeLeasesLeaseTerm
Namespace Prefix:	idsa_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Details

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