Debt Covenant, Adjusted Capital

No definition available.

Name:	icch_DebtCovenantAdjustedCapital
Namespace Prefix:	icch_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line Of Credit Facility Maximum Borrowing Capacity, Percent

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Amount of short-term and long-term debt and lease obligation.

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Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

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Period Type:	duration

- Definition

Amount of assets pledged to secure a debt instrument.

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Balance Type:	debit
Period Type:	instant

- Definition

Face (par) amount of debt instrument at time of issuance.

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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The average effective interest rate during the reporting period.

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Balance Type:	na
Period Type:	duration

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Amount of Federal Home Loan Bank (FHLBank) advances to member financial institutions.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of restricted investment in debt security measured at amortized cost (held-to-maturity).

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Balance Type:	debit
Period Type:	instant

- Definition

Amount of the cost of borrowed funds accounted for as interest expense.

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Balance Type:	debit
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount, excluding unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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Period Type:	instant

- Details

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- Details

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Debt (Details) - USD ($)	1 Months Ended	6 Months Ended	12 Months Ended
Debt (Details) - USD ($)	Mar. 31, 2020	Jun. 30, 2022	Dec. 31, 2021	May 03, 2021	Aug. 03, 2020	Mar. 31, 2017
Debt Instrument [Line Items]
Corporate debt		$ 15,000,000	$ 18,455,342
Maximum borrowing capacity		$ 42,000,000.0
Line Of Credit Facility Maximum Borrowing Capacity, Percent		25.00%
Federal Home Loan Bank of Chicago [Member]
Debt Instrument [Line Items]
Interest rate	1.40%
Collateral		$ 19,300,000
Term of debt instrument	5 years
FHLBC advances	$ 6,000,000.0
Securities pledged	$ 6,800,000
Revolver [Member]
Debt Instrument [Line Items]
Interest expense		0	0
Collateral					$ 4,000,000.0
Maximum borrowing capacity		2,000,000.0
Debt Obligation 2 [Member] \| Federal Home Loan Bank of Chicago [Member]
Debt Instrument [Line Items]
Face amount of debt instrument				$ 4,000,000.0
Interest rate				0.74%
Debt Obligation 3 [Member] \| Federal Home Loan Bank of Chicago [Member]
Debt Instrument [Line Items]
Face amount of debt instrument		$ 5,000,000.0
Interest rate		0.00%
Debt Obligation 4 [Member] \| Federal Home Loan Bank of Chicago [Member]
Debt Instrument [Line Items]
Face amount of debt instrument		$ 5,000,000.0
Interest rate		1.36%
Line Of Credit, July 2022 [Member] \| Revolver [Member]
Debt Instrument [Line Items]
Debt Covenant, Adjusted Capital		$ 21.0
Maximum borrowing capacity		$ 4,000,000.0
Line Of Credit, July 2022 [Member] \| Prime Rate [Member] \| Revolver [Member]
Debt Instrument [Line Items]
Variable interest rate		0.50%
Line Of Credit, July 2022 [Member] \| Prime Rate [Member] \| Minimum [Member] \| Revolver [Member]
Debt Instrument [Line Items]
Variable interest rate		4.75%
Debt Obligation [Member]
Debt Instrument [Line Items]
Face amount of debt instrument						$ 3,500,000
Interest rate		3.65%
Collateral		$ 1,000,000.0
Debt Obligation [Member] \| Bofi Federal Bank B & C [Member]
Debt Instrument [Line Items]
Debt		$ 15,000,000	$ 18,455,342
Current interest rate		1.20%	1.30%