Note 8 - Notes Payable and Convertible Notes Payable - Schedule of Future Payments (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
2026 (remainder)	$ 94
2027	11,817
2028	5,000
2029	0
2030	0
2031	0
Thereafter	600
Total debt principal payments	17,511
Accrued and unpaid interest	2,437
Unamortized discount and debt issuance costs	(735)
Future debt payments, net	19,213
Notes Payable [Member]
Future debt payments, net	6,192	$ 5,937
The 2019 MD Loan [Member] \| Notes Payable [Member]
2026 (remainder)	0
2027	0
2028	0
2029	0
2030	0
2031	0
Thereafter	500
Total debt principal payments	500
Accrued and unpaid interest	304
Unamortized discount and debt issuance costs	0
Future debt payments, net	804
The 2019 Cecil Loan [Member] \| Notes Payable [Member]
2026 (remainder)	0
2027	0
2028	0
2029	0
2030	0
2031	0
Thereafter	100
Total debt principal payments	100
Accrued and unpaid interest	60
Unamortized discount and debt issuance costs	0
Future debt payments, net	160	154
The 2022 MD Loan [Member] \| Notes Payable [Member]
2026 (remainder)	94
2027	317
2028	0
2029	0
2030	0
2031	0
Thereafter	0
Total debt principal payments	411
Accrued and unpaid interest	50
Unamortized discount and debt issuance costs	(4)
Future debt payments, net	457
The 2022 DHCD Loan [Member] \| Notes Payable [Member]
2026 (remainder)	0
2027	0
2028	5,000
2029	0
2030	0
2031	0
Thereafter	0
Total debt principal payments	5,000
Accrued and unpaid interest	312
Unamortized discount and debt issuance costs	(17)
Future debt payments, net	5,295
The 2024 S S C P Notes [Member]
Future debt payments, net	10,900	$ 9,300
The 2024 S S C P Notes [Member] \| Notes Payable [Member]
2026 (remainder)	0
2027	10,000
2028	0
2029	0
2030	0
2031	0
Thereafter	0
Total debt principal payments	10,000
Accrued and unpaid interest	1,491
Unamortized discount and debt issuance costs	(613)
Future debt payments, net	10,878
The 2025 S S C P Notes [Member] \| Notes Payable [Member]
2026 (remainder)	0
2027	1,500
2028	0
2029	0
2030	0
2031	0
Thereafter	0
Total debt principal payments	1,500
Accrued and unpaid interest	220
Unamortized discount and debt issuance costs	(101)
Future debt payments, net	$ 1,619

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