Note 8 - Notes Payable and Convertible Notes Payable - Long-term Debt (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Future debt payments, net	$ 16,127
Notes payable, net of current portion	4,619	$ 4,610
Convertible notes payable	11,134	10,816
Notes Payable [Member]
Future debt payments, net	5,353	5,500
Unamortized discount and debt issuance costs	(360)	(531)
Less notes payable, current portion, net of unamortized discount and debt issuance costs	(374)	(359)
Notes payable, net of current portion	4,619	4,610
Convertible Notes Payable [Member]
Future debt payments, net	11,812	11,812
Unamortized discount and debt issuance costs	(678)	(996)
Convertible notes payable	$ 11,134	10,816
The 2019 Cecil Loan [Member] \| Notes Payable [Member]
Interest Rate	8.00%
Future debt payments, net	$ 150	146
The 2019 Maryland DHCD [Member] \| Notes Payable [Member]
Interest Rate	8.00%
Future debt payments, net	$ 754	734
The 2022 Maryland DHCD [Member] \| Notes Payable [Member]
Interest Rate	6.00%
Future debt payments, net	$ 912	1,083
The 2024 S S C P Note [Member] \| Notes Payable [Member]
Interest Rate	12.00%
Future debt payments, net	$ 3,537	3,537
The 2024 S S C P Note [Member] \| Convertible Notes Payable [Member]
Interest Rate	12.00%
Future debt payments, net	$ 6,500	6,500
The 2022 DHCD Loan [Member] \| Notes Payable [Member]
Future debt payments, net	$ 5,280
The 2022 DHCD Loan [Member] \| Convertible Notes Payable [Member]
Interest Rate	6.00%
Future debt payments, net	$ 5,312	$ 5,312

Amount of convertible note payable as of the balance sheet date, classified as noncurrent.

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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 of unamortized debt discount (premium) and debt issuance costs.

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Amount, after accumulated amortization, of debt discount (premium).

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Carrying value as of the balance sheet date of notes payable (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion.

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Sum of the carrying values as of the balance sheet date of the portions of long-term notes payable due within one year or the operating cycle if longer.

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