Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Current assets:
Cash and cash equivalents	$ 7,557	$ 4,278
Prepaid expenses and other current assets	1,519	916
Total current assets	9,076	5,194
Intangible assets	11,148	11,148
Other non-current assets	900	0
Operating lease right-of-use asset	370	424
Furniture and equipment, net	99	159
Total assets	21,593	16,925
Current liabilities:
Accounts payable	3,721	2,030
Accrued expenses and other current liabilities	4,192	3,329
Total current liabilities	7,913	5,359
Operating lease liability - long-term, net of current portion	292	358
Warrant liability	20,553	5,229
Total liabilities	28,758	10,946
Commitments and contingencies (Note 7)
Stockholders' equity (deficit)
Preferred stock, $0.001 par value; 5,000,000 shares authorized, no shares issued or outstanding	0	0
Common stock, $0.001 par value; 100,000,000 shares authorized; 30,207,494 and 3,378,895 shares issued and outstanding at June 30, 2025 and December 31, 2024, respectively	30	3
Additional paid-in capital	160,286	159,384
Accumulated other comprehensive loss	(38)	(41)
Accumulated deficit	(167,443)	(153,367)
Total stockholders’ equity (deficit)	(7,165)	5,979
Total liabilities and stockholders’ equity	$ 21,593	$ 16,925