SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Gain on Insurance Proceeds) (Details)	3 Months Ended
Mar. 31, 2019 USD ($) roof
Accounting Policies [Abstract]
Number of roofs for which insurance claim filed \| roof	6
Proceeds from insurance settlements \| $	$ 38,000.0

Represents the number of roofs for which insurance claim filed.

No definition available.

Name:	idsa_NumberOfRoofsForWhichInsuranceClaimFiled
Namespace Prefix:	idsa_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant