Debt - Narrative (Details)		1 Months Ended
Debt - Narrative (Details)	Oct. 17, 2024 USD ($)	May 31, 2019 USD ($)	Apr. 30, 2019 USD ($) installment	Jun. 30, 2025 USD ($)	Nov. 01, 2024 USD ($)	Oct. 31, 2024 USD ($)	Sep. 30, 2024 USD ($)
Line of Credit Facility [Line Items]
Long-term debt, gross				$ 11,385,000			$ 24,005,000
Revolving credit agreement \| Revolving credit agreement
Line of Credit Facility [Line Items]
Debt instrument, unamortized discount premium				556,000			461,000
Revolving line of credit, accumulated amortization of debt issuance costs				124,000			0
Long-term debt, gross				8,372,000			20,142,000
Revolving credit agreement \| Secured Debt
Line of Credit Facility [Line Items]
Revolving line of credit, accumulated amortization of debt issuance costs				25,000
Debt issuance costs				83,000
Long-term debt, gross				2,541,000			0
Subordinated note \| Director
Line of Credit Facility [Line Items]
Long-term debt, gross				0			$ 3,510,000
Loan Agreement
Line of Credit Facility [Line Items]
Debt instrument, fee paid	$ 115,000
Debt instrument, fee payable	$ 115,000
Loan Agreement \| Revolving credit agreement
Line of Credit Facility [Line Items]
Debt instrument, maturity term	3 years
Closing fee	$ 230,000
Loan Agreement \| Revolving credit agreement \| Revolving credit agreement
Line of Credit Facility [Line Items]
Revolving credit facility, maximum borrowing capacity	20,000,000
Debt instrument, collateral fee	126,000
Debt instrument, collateral fee installment amount	$ 4,000
Unused capacity, commitment fee percentage	0.50%
Loan Agreement \| Revolving credit agreement \| Revolving credit agreement \| Secured Overnight Financing Rate (SOFR)
Line of Credit Facility [Line Items]
Basis spread	4.50%
Loan Agreement \| Revolving credit agreement \| Revolving credit agreement \| Base Rate
Line of Credit Facility [Line Items]
Basis spread	3.50%
Loan Agreement \| Revolving credit agreement \| Secured Debt
Line of Credit Facility [Line Items]
Face amount	$ 3,000,000
Debt instrument, periodic payments					$ 50,000
Loan Agreement \| Revolving credit agreement \| Secured Debt \| Secured Overnight Financing Rate (SOFR)
Line of Credit Facility [Line Items]
Basis spread	5.50%
Loan Agreement \| Revolving credit agreement \| Secured Debt \| Base Rate
Line of Credit Facility [Line Items]
Basis spread	4.50%
Loan Agreement \| Revolving credit agreement \| Letter of Credit
Line of Credit Facility [Line Items]
Revolving credit facility, maximum borrowing capacity	$ 2,500,000
Compensating balances held				1,553,000
Loan Agreement \| Revolving credit agreement \| Letter of Credit \| Secured Overnight Financing Rate (SOFR)
Line of Credit Facility [Line Items]
Basis spread	4.50%
Subordinated Promissory Note \| Subordinated note \| Director
Line of Credit Facility [Line Items]
Face amount	$ 1,030,000					$ 3,000,000
PIK interest amount	$ 387,000
Closing fee						$ 150,000
Credit Agreement \| Revolving credit agreement \| Revolving credit agreement
Line of Credit Facility [Line Items]
Available funds				$ 4,892,000
Weighted average interest rate, revolving credit facility				9.70%			8.10%
Credit Agreement \| Revolving credit agreement \| Letter of Credit
Line of Credit Facility [Line Items]
Letters of credit				$ 0
ED Loan \| Unsecured Debt
Line of Credit Facility [Line Items]
Debt instrument, maturity term			5 years
Face amount			$ 864,000
Long-term debt, gross				144,000			$ 133,000
Remaining of installments \| installment			3
ED Loan \| Unsecured Debt \| Debt Covenant Period One
Line of Credit Facility [Line Items]
Interest rate, fixed percentage			0.00%
ED Loan \| Unsecured Debt \| Debt Covenant Period Two
Line of Credit Facility [Line Items]
Interest rate, fixed percentage			2.00%
ED Loan \| Unsecured Debt \| Prime Rate
Line of Credit Facility [Line Items]
Basis spread			1.00%
VPI Loan \| Unsecured Debt
Line of Credit Facility [Line Items]
Debt instrument, maturity term		5 years
Face amount		$ 180,000
Long-term debt, gross				$ 220,000			$ 220,000
Interest rate		3.60%

SIFCO INDUSTRIES INC 10-Q