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Statements of Cash Flows (Unaudited) (Parenthetical) - USD ($) | Sep. 30, 2020 | Sep. 30, 2019
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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

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- References No definition available. + Details
Name: | us-gaap_StatementOfCashFlowsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration