Note 7 - Line of Credit and Long-term Debt - Long-term Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Debt, carrying amount	$ 6,899	$ 7,246
Less: unamortized debt issuance costs	(29)	(31)
Total debt	6,870	7,215
Less: current portion	(557)	(862)
Total long-term debt	$ 6,313	6,353
The 2019 Term Loan [Member]
Interest rate	4.00%
Debt, carrying amount	$ 1,750	1,750
The 2018 Term Loan [Member]
Interest rate	4.00%
Debt, carrying amount	$ 2,896	2,813
Financed Insurance Premium [Member]
Interest rate	4.00%
Debt, carrying amount	$ 69	373
Freezer Equipment Loan [Member]
Interest rate	5.70%
Debt, carrying amount	$ 572	612
Manufacturing Equipment Loans [Member]
Interest rate	5.70%
Debt, carrying amount	$ 333	355
Freezer Installation Loan [Member]
Interest rate	6.30%
Debt, carrying amount	$ 1,271	1,334
Other Loans [Member]
Debt, carrying amount	$ 8	$ 9

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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

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