Debt instrument collateral monitoring fee percent.

No definition available.

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

- Definition

Debt instrument covenant tangible net worth.

+ References

No definition available.

+ Details

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Balance Type:	debit
Period Type:	duration

- Definition

Debt instrument number of installments for periodic payment.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

Debt instrument reference rate.

+ References

No definition available.

+ Details

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

- Definition

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

+ References

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+ Details

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

- Definition

Amount of the fee that accompanies borrowing money under the debt instrument.

+ References

+ Details

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

- Definition

The average effective interest rate during the reporting period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Incremental percentage increase (decrease) in the stated rate on a debt instrument.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ References

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of the required periodic payments including both interest and principal payments.

+ References

+ Details

Name:	us-gaap_DebtInstrumentPeriodicPayment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of interest payable on debt, including, but not limited to, trade payables.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Data Type:	xbrli:stringItemType
Balance Type:	na
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.

+ References

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Balance Type:	credit
Period Type:	instant

- Definition

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

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+ Details

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

- Definition

Amount of liabilities classified as other, due within one year or the normal operating cycle, if longer.

+ References

+ Details

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

- Details

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- Details

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Period Type:

- Details

Name:	us-gaap_TypeOfArrangementAxis=YHGJ_LineFinancialAgreementMember
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Balance Type:
Period Type:

- Details

Name:	us-gaap_TypeOfArrangementAxis=YHGJ_NewCreditAgreementsMember
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- Details

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Debt (Details Narrative)				12 Months Ended
Debt (Details Narrative)	Sep. 30, 2023 USD ($)	Nov. 01, 2021 USD ($)	Sep. 30, 2021 USD ($)	Dec. 31, 2025 USD ($)	Dec. 31, 2023 USD ($)	Sep. 30, 2025 USD ($)	Dec. 31, 2024 USD ($)	Jan. 31, 2024 USD ($)
Line of Credit Facility [Line Items]
Annual capital expenditures				$ 1,000,000.0
Renewal fee	0.75%
Commitment fee	$ 12,500
John H. Schwan [Member]
Line of Credit Facility [Line Items]
Due to related parties				300,000	$ 1,300,000		$ 300,000
Interest rate					6.00%
Loan and interest payable				300,000				$ 1,000,000
Term Loan [Member]
Line of Credit Facility [Line Items]
Loan balance				500,000			600,000
Line Financial Agreement [Member]
Line of Credit Facility [Line Items]
Periodic monthly installments		48
Periodic payment		$ 15,000
Monitoring fees percentage			4.62%
Debt Instrument, covenant, tangible net worth	4,000,000.0
New Credit Agreements [Member] \| Term Loan [Member]
Line of Credit Facility [Line Items]
Annual capital expenditures						$ 700,000
Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of credit balance				$ 6,800,000			$ 6,600,000
Revolving Credit Facility [Member] \| Minimum [Member]
Line of Credit Facility [Line Items]
Line of credit balance	6,000,000.0
Revolving Credit Facility [Member] \| Maximum [Member]
Line of Credit Facility [Line Items]
Line of credit balance	$ 7,000,000.0
Revolving Credit Facility [Member] \| Line Financial Agreement [Member]
Line of Credit Facility [Line Items]
Debt instrument interest rate				7.82%
Debt instrument interest rate				14.57%
Revolving Credit Facility [Member] \| Line Financial Agreement [Member] \| Line Financial [Member]
Line of Credit Facility [Line Items]
Maximum borrowing capacity			$ 7,000,000
Revolving Credit Facility [Member] \| New Credit Agreements [Member]
Line of Credit Facility [Line Items]
Maximum borrowing capacity						$ 7,000,000
Line of credit balance				$ 200,000
Term Loan Facility [Member] \| Line Financial Agreement [Member] \| Line Financial [Member]
Line of Credit Facility [Line Items]
Annual capital expenditures			$ 731,250
Term Loan [Member] \| Line Financial Agreement [Member]
Line of Credit Facility [Line Items]
Debt instrument interest rate				1.45%
Debt instrument interest rate				8.20%