Note 8 - Notes Payable and Convertible Notes Payable - Long-term Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Future debt payments, net	$ 11,951	$ 16,915
Less notes payable, current portion, net of unamortized discount and debt issuance costs	(10,875)	(14,627)
Notes payable, net of current portion	1,668	1,894
Notes payable	11,951	16,915
Notes Payable [Member]
Unamortized premium (discount) and debt issuance costs	592	(394)
Less notes payable, current portion, net of unamortized discount and debt issuance costs	(10,875)	(14,627)
Notes payable, net of current portion	1,668	1,894
Convertible Notes Payable [Member]
Future debt payments, net	5,312	10,308
Unamortized premium (discount) and debt issuance costs	(41)	(174)
Notes payable, net of current portion	5,271	5,258
Notes payable	5,312	10,308
Less convertible notes payable, current portion, net of unamortized discount and debt issuance costs	$ 0	(4,876)
The 2019 Cecil Loan [Member] \| Notes Payable [Member]
Interest Rate	8.00%
Future debt payments, net	$ 144	138
Unamortized premium (discount) and debt issuance costs	0
Notes payable	$ 144	138
The 2019 Maryland DHCD [Member] \| Notes Payable [Member]
Interest Rate	8.00%
Future debt payments, net	$ 724	694
Notes payable	$ 724	694
The 2022 Maryland DHCD [Member] \| Notes Payable [Member]
Interest Rate	6.00%
Future debt payments, net	$ 1,083	1,083
Notes payable	$ 1,083	1,083
Avenue [Member] \| Notes Payable [Member]
Interest Rate	15.10%
Future debt payments, net	$ 10,000	15,000
Notes payable	$ 10,000	15,000
Avenue [Member] \| Convertible Notes Payable [Member]
Interest Rate	15.10%
Future debt payments, net	$ 0	5,000
Notes payable	0	5,000
The 2022 DHCD Loan [Member] \| Notes Payable [Member]
Future debt payments, net	5,271
Unamortized premium (discount) and debt issuance costs	(41)
Notes payable	$ 5,271
The 2022 DHCD Loan [Member] \| Convertible Notes Payable [Member]
Interest Rate	6.00%
Future debt payments, net	$ 5,312	5,308
Notes payable	$ 5,312	$ 5,308

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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