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Note 10 - Commitments and Contingencies (Details Textual) - USD ($) | Oct. 01, 2025 | Sep. 29, 2025 | Dec. 31, 2025 | Jan. 01, 2025 | Dec. 31, 2024
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First Defense, Product Line [Member] |  |  |  |  |
Other Commitment |  |  | $ 46,000 |  |
Purchase of Inventory [Member] |  |  |  |  |
Other Commitment |  |  | 1,326,000 |  |
Information Technology Service [Member] |  |  |  |  |
Other Commitment |  |  | 269,000 |  |
Cold Storage Service [Member] |  |  |  |  |
Other Commitment |  |  | 312,000 |  |
Other Obligations [Member] |  |  |  |  |
Other Commitment |  |  | 527,000 |  |
President and CEO [Member] |  |  |  |  |
Salary and Wage, Officer, Excluding Cost of Good and Service Sold |  | $ 450,000 |  |  |
Employment Agreement, Maximum Amount of Potential Additional Annual Cash Bonuses |  | $ 400,000 |  |  |
Employment Agreement, One-Time Signing Bonus | $ 100,000 |  |  |  |
President and CEO [Member] | Deferred Compensation, Excluding Share-Based Payments and Retirement Benefits [Member] |  |  |  |  |
Deferred Compensation Arrangement with Individual, Recorde Liability, Earned and Unpaid Sick Time |  |  | 239,369 |  | $ 230,162
Deferred Compensation Arrangement with Individual, Cash Award Granted, Amount |  |  |  | $ 300,000 |
Deferred Compensation Arrangement with Individual, Recorded Liability, Retention and Performance Bonus |  |  | 100,000 |  |
Indemnification Agreement [Member] |  |  |  |  |
Guarantor Obligations, Current Carrying Value |  |  | 0 |  | 0
Fair Value Guarantee [Member] |  |  |  |  |
Guarantor Obligations, Current Carrying Value |  |  | 0 |  | $ 0
Guarantor Obligations, Maximum Exposure, Undiscounted |  |  | $ 0 |  |

X
- Definition Represent recorded liability related to earned and Unpaid sick time. + References No definition available. + Details
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Namespace Prefix: | iccc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Represents retention and performance bonus related to the deferred compensation arrangement. + References No definition available. + Details
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Namespace Prefix: | iccc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Represents the maximum amount of potential additional annual cash bonuses that can be earned under an employment agreement. + References No definition available. + Details
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Namespace Prefix: | iccc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Represents the amount of a one-time signing bonus provided under an employment agreement. + References No definition available. + Details
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Namespace Prefix: | iccc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of commitment made to pay deferred cash remuneration. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 460 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482425/460-10-50-4 + Details
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Period Type: | instant

X
- Definition Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 460 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482425/460-10-50-4 + Details
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Period Type: | instant

X
- Definition Amount of expense for salary and wage arising from service rendered by officer. Excludes allocated cost, labor-related nonsalary expense, and direct and overhead labor cost included in cost of good and service sold. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(4)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 + Details
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X
- Definition Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 942 -SubTopic 235 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477314/942-235-S99-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480738/235-10-S50-4 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04(a)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480678/235-10-S99-3 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
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- Details
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Balance Type: |
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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