Note 8 - Notes Payable and Convertible Notes Payable - Schedule of Future Payments (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
2026 (remainder)	$ 187
2027	11,817
2028	5,000
2029	0
2030	0
2031	0
Thereafter	600
Total debt principal payments	17,604
Accrued and unpaid interest	2,036
Unamortized discount and debt issuance costs	(916)
Future debt payments, net	18,724
Notes Payable [Member]
Future debt payments, net	6,103	$ 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	294
Unamortized discount and debt issuance costs	0
Future debt payments, net	794
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	58
Unamortized discount and debt issuance costs	0
Future debt payments, net	158	154
The 2022 MD Loan [Member] \| Notes Payable [Member]
2026 (remainder)	187
2027	317
2028	0
2029	0
2030	0
2031	0
Thereafter	0
Total debt principal payments	504
Accrued and unpaid interest	50
Unamortized discount and debt issuance costs	(6)
Future debt payments, net	548
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	(20)
Future debt payments, net	5,292
The 2024 S S C P Notes [Member]
Future debt payments, net	10,400	$ 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	1,153
Unamortized discount and debt issuance costs	(764)
Future debt payments, net	10,389
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	169
Unamortized discount and debt issuance costs	(126)
Future debt payments, net	$ 1,543

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