Line Of Credit Facility, Monthly Increase In Reserves Under Borrowing Base

No definition available.

Name:	sif_LineOfCreditFacilityMonthlyIncreaseInReservesUnderBorrowingBase
Namespace Prefix:	sif_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line Of Credit Facility, Reserves Under Borrowing Base

+ References

No definition available.

+ Details

Name:	sif_LineOfCreditFacilityReservesUnderBorrowingBase
Namespace Prefix:	sif_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 835
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482900/835-30-50-1

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+ Details

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

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B

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-Topic 210
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-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

+ Details

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

- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

+ Details

Name:	us-gaap_LineOfCreditFacilityCommitmentFeePercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

+ Details

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

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 830
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
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+ Details

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

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

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- Details

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- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

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Period Type:

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

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Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

Subsequent Events (Details) - USD ($)		12 Months Ended
Subsequent Events (Details) - USD ($)	Dec. 21, 2023	Sep. 30, 2023	Sep. 30, 2022	Nov. 08, 2023	Aug. 09, 2023	Aug. 08, 2023
Subordinated Promissory Note \| Subordinated note \| Subsequent event \| Director
Subsequent Event [Line Items]
Reserves under borrowing base	$ 1,500,000
Issued amount of debt	3,000,000
Monthly increase in reserves under borrowing base	$ 250,000
Commitment fee percentage	0.50%
Interest rate, fixed percentage	14.00%
Subordinated Promissory Note \| Subordinated note \| Subsequent event \| Director \| CBFR
Subsequent Event [Line Items]
Basis spread	2.75%
Subordinated Promissory Note \| Subordinated note \| Subsequent event \| Director \| CB Floating Rate
Subsequent Event [Line Items]
Basis spread	0.25%
Subordinated Promissory Note \| Subordinated note \| Subsequent event \| Director \| Secured Overnight Financing Rate (SOFR)
Subsequent Event [Line Items]
Basis spread	2.75%
Revolving credit agreement \| Credit Agreement \| Revolving credit agreement
Subsequent Event [Line Items]
Reserves under borrowing base						$ 1,500,000
Revolving credit facility, maximum borrowing capacity		$ 30,000,000	$ 35,000,000		$ 23,000,000	28,000,000
Commitment fee percentage		0.25%	0.25%
Revolving credit agreement \| Credit Agreement \| Revolving credit agreement \| Secured Overnight Financing Rate (SOFR)
Subsequent Event [Line Items]
Basis spread		2.25%	2.25%
Revolving credit agreement \| Credit Agreement \| Revolving credit agreement \| Subsequent event
Subsequent Event [Line Items]
Reserves under borrowing base				$ 1,500,000
Revolving credit facility, maximum borrowing capacity	$ 19,000,000
Revolving credit agreement \| Credit Agreement And Export Credit Facility \| Revolving credit agreement
Subsequent Event [Line Items]
Reserves under borrowing base		$ 1,500,000			1,500,000
Revolving credit facility, maximum borrowing capacity					30,000,000	$ 35,000,000
Revolving credit agreement \| Credit Agreement And Export Credit Facility \| Revolving credit agreement \| Subsequent event
Subsequent Event [Line Items]
Reserves under borrowing base	1,500,000
Revolving credit facility, maximum borrowing capacity	23,000,000
Monthly increase in reserves under borrowing base	250,000
Revolving credit agreement \| Export Credit Facility \| Revolving credit agreement
Subsequent Event [Line Items]
Revolving credit facility, maximum borrowing capacity					$ 7,000,000
Revolving credit agreement \| Export Credit Facility \| Revolving credit agreement \| Secured Overnight Financing Rate (SOFR)
Subsequent Event [Line Items]
Basis spread		1.75%	1.75%
Revolving credit agreement \| Export Credit Facility \| Revolving credit agreement \| Subsequent event
Subsequent Event [Line Items]
Revolving credit facility, maximum borrowing capacity	$ 7,000,000