Note 9 - Debt (Details Textual) - USD ($)	3 Months Ended	9 Months Ended
Oct. 01, 2023	Oct. 01, 2023	Dec. 31, 2022
Working capital line of credit	$ 500,000	$ 500,000	$ 0
Line of Credit Facility, Interest Rate at Period End	8.75%	8.75%
Line of Credit Facility, Fair Value of Amount Outstanding	$ 500,000	$ 500,000
Machinery at Sypris Technologies Facility [Member]
Finance Lease, Liability	$ 3,002,000	$ 3,002,000
Machinery at Sypris Technologies Facility [Member] \| Finance Lease Obligations [Member]
Debt, Weighted Average Interest Rate	8.60%	8.60%
Gill Family Capital Management [Member]
Subordinated Debt, Ending Balance	$ 2,000,000	$ 2,000,000
Debt Instrument, Maximum Allowance of Interest Due on Deferred Payments, Percent		60.00%
Gill Family Capital Management [Member] \| Minimum [Member]
Debt Instrument, Interest Rate, Stated Percentage	8.00%	8.00%
Gill Family Capital Management [Member] \| Minimum [Member] \| Five-year Treasury Note Average During Preceding 90-day Period [Member]
Debt Instrument, Basis Spread on Variable Rate		5.00%
Promissory Notes with Maturity on April 1, 2021 and April 1, 2023 [Member] \| Gill Family Capital Management [Member]
Subordinated Debt, Ending Balance	$ 4,000,000	$ 4,000,000	$ 6,500,000
Debt Instrument, Interest Rate, Stated Percentage	8.80%	8.80%
Promissory Notes with Maturity on April 1, 2021 and April 1, 2023 [Member] \| Gill Family Capital Management [Member] \| Minimum [Member]
Debt Instrument, Interest Rate, Stated Percentage	8.00%	8.00%
Promissory Notes with Maturity on April 1, 2024 [Member] \| Gill Family Capital Management [Member]
Subordinated Debt, Ending Balance	$ 2,000,000	$ 2,000,000
Promissory Note [Member] \| Gill Family Capital Management [Member] \| Minimum [Member] \| Five-year Treasury Note Average During Preceding 90-day Period [Member]
Debt Instrument, Basis Spread on Variable Rate		5.00%
Promissory Notes With Maturity On April 1, 2024 And April 1, 2026 [Member] \| Gill Family Capital Management [Member]
Subordinated Debt, Ending Balance	6,500,000	$ 6,500,000
Debt Instrument, Increase (Decrease), Net	$ 2,500,000
Debt Instrument, Maximum Allowance of Interest Due on Deferred Payments, Percent		60.00%
Promissory Notes With Maturity On April 1, 2024 And April 1, 2026 [Member] \| Gill Family Capital Management [Member] \| Minimum [Member]
Debt Instrument, Interest Rate, Stated Percentage	8.00%	8.00%
Promissory Notes With Maturity on April 1, 2025 [Member] \| Gill Family Capital Management [Member]
Subordinated Debt, Ending Balance	$ 2,000,000	$ 2,000,000
Promissory Note With Maturity On April 1, 2026 [Member] \| Gill Family Capital Management [Member]
Subordinated Debt, Ending Balance	2,000,000	2,000,000
Equipment Financing Obligations [Member]
Finance Lease, Liability	2,053,000	2,053,000
Long-Term Debt	$ 2,053,000	$ 2,053,000
Equipment Financing Obligations [Member] \| Minimum [Member]
Debt Instrument, Interest Rate, Effective Percentage	4.40%	4.40%
Equipment Financing Obligations [Member] \| Maximum [Member]
Debt Instrument, Interest Rate, Effective Percentage	8.10%	8.10%

The percentage of maximum allowance of the interest due on deferral of payments.

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

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Net increase or decrease in the carrying amount of the debt instrument for the period.

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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

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Weighted average interest rate of debt outstanding.

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Present value of lessee's discounted obligation for lease payments from finance lease.

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Fair value of the amount outstanding under the credit facility.

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The effective interest rate at the end of the reporting period.

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

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Including the current and noncurrent portions, carrying value as of the balance sheet date of subordinated debt (with initial maturities beyond one year or beyond the operating cycle if longer). Subordinated debt places a lender in a lien position behind debt having a higher priority of repayment in liquidation of the entity's assets.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of uncollateralized debt obligations (with maturities initially due after one year or beyond the operating cycle if longer).

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