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Statements of Cash Flows (Unaudited) (Parenthetical) - USD ($)	Sep. 30, 2020	Sep. 30, 2019
Statement of Cash Flows [Abstract]
Short-term investments	$ 1,992,538	$ 7,199,947

X

- Definition

Amount of short-term investments.

+ References

No definition available.

+ Details

Name:	iccc_ShorttermInvestment
Namespace Prefix:	iccc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- References

No definition available.

+ Details

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