Note 8 - Notes Payable and Convertible Notes Payable - Long-term Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025	Aug. 31, 2025
Future debt payments, net	$ 19,213
Notes payable, net of current portion	964	$ 3,741
Less convertible notes payable, current portion, net of unamortized discount and debt issuance costs	(7,980)	(2,378)
Convertible notes payable	5,295	9,800
Notes Payable [Member]
Future debt payments, net	6,192	5,937
Unamortized discount and debt issuance costs	(254)	(500)
Less notes payable, current portion, net of unamortized discount and debt issuance costs	(4,974)	(1,696)
Notes payable, net of current portion	964	3,741
Convertible Notes Payable [Member]
Future debt payments, net	13,756	13,119
Unamortized discount and debt issuance costs	(481)	(941)
Less convertible notes payable, current portion, net of unamortized discount and debt issuance costs	(7,980)	(2,378)
Convertible notes payable	$ 5,295	9,800
The 2019 Cecil Loan [Member] \| Notes Payable [Member]
Interest Rate	8.00%
Future debt payments, net	$ 160	154
The 2019 Maryland DHCD [Member] \| Notes Payable [Member]
Interest Rate	8.00%
Future debt payments, net	$ 804	774
The 2022 Maryland DHCD [Member] \| Notes Payable [Member]
Interest Rate	6.00%
Future debt payments, net	$ 461	736
The 2024 S S C P Note [Member] \| Notes Payable [Member]
Interest Rate	12.00%
Future debt payments, net	$ 4,022	3,678
The 2024 S S C P Note [Member] \| Convertible Notes Payable [Member]
Interest Rate	12.00%
Future debt payments, net	$ 7,469	6,832
The 2025 S S C P Note [Member] \| Notes Payable [Member]
Interest Rate	12.00%
Future debt payments, net	$ 745	595
The 2025 S S C P Note [Member] \| Convertible Notes Payable [Member]
Future debt payments, net	975	975
The 2022 DHCD Loan [Member] \| Notes Payable [Member]
Future debt payments, net	$ 5,295
The 2022 DHCD Loan [Member] \| Convertible Notes Payable [Member]
Interest Rate	6.00%
Future debt payments, net	$ 5,312	$ 5,312
The 2025 S S C P Notes [Member]
Interest Rate			12.00%
The 2025 S S C P Notes [Member] \| Notes Payable [Member]
Future debt payments, net	$ 1,619
The 2025 S S C P Notes [Member] \| Convertible Notes Payable [Member]
Interest Rate	12.00%

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

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Carrying value as of the balance sheet date of the portion of long-term debt due within one year or the operating cycle if longer identified as Convertible Notes Payable. Convertible Notes Payable is a written promise to pay a note which can be exchanged for a specified amount of another, related security, at the option of the issuer and the holder.

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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, 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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