Note 8 - Notes Payable and Convertible Notes Payable - Long-term Debt (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025	Aug. 31, 2025
Future debt payments, net	$ 18,724
Notes payable, net of current portion	5,374	$ 3,741
Less convertible notes payable, current portion, net of unamortized discount and debt issuance costs	0	(2,378)
Convertible notes payable	12,937	9,800
Notes Payable [Member]
Future debt payments, net	6,103	5,937
Unamortized discount and debt issuance costs	(316)	(500)
Less notes payable, current portion, net of unamortized discount and debt issuance costs	(413)	(1,696)
Notes payable, net of current portion	5,374	3,741
Convertible Notes Payable [Member]
Future debt payments, net	13,537	13,119
Unamortized discount and debt issuance costs	(600)	(941)
Less convertible notes payable, current portion, net of unamortized discount and debt issuance costs	0	(2,378)
Convertible notes payable	$ 12,937	9,800
The 2019 Cecil Loan [Member] \| Notes Payable [Member]
Interest Rate	8.00%
Future debt payments, net	$ 158	154
The 2019 Maryland DHCD [Member] \| Notes Payable [Member]
Interest Rate	8.00%
Future debt payments, net	$ 794	774
The 2022 Maryland DHCD [Member] \| Notes Payable [Member]
Interest Rate	6.00%
Future debt payments, net	$ 554	736
The 2024 S S C P Note [Member] \| Notes Payable [Member]
Interest Rate	12.00%
Future debt payments, net	$ 3,903	3,678
The 2024 S S C P Note [Member] \| Convertible Notes Payable [Member]
Interest Rate	12.00%
Future debt payments, net	$ 7,250	6,832
The 2025 S S C P Note [Member] \| Notes Payable [Member]
Interest Rate	12.00%
Future debt payments, net	$ 694	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	$ 5,292
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	$ 1,543
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.

No definition available.

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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 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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