Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Current Assets:
Cash and cash equivalents	$ 7,365	$ 6,172
Prepaid expenses and other current assets	1,543	1,205
Total current assets	8,908	7,377
Property and equipment, net	205	262
Restricted cash	150	154
Operating lease right-of-use assets	1,544	1,853
Intangible assets	25,250	25,250
Goodwill	0	3,058
Total assets	36,057	37,954
Current Liabilities:
Accounts payable	944	249
Accrued expenses	1,859	1,552
Operating lease liabilities - current portion	439	404
Loans payable	467	252
Total current liabilities	3,709	2,457
Operating lease liabilities - non-current portion	1,251	1,624
Restructured debt liability - contingent milestone payments	15,000	15,000
Other liabilities	3,800	3,800
Deferred tax liabilities	4,813	5,061
Total liabilities	28,573	27,942
Stockholders’ Equity:
Preferred stock, $0.001 par value; 5,000,000 and 4,960,000 shares authorized; 0 shares issued and outstanding at September 30, 2023 and December 31, 2022, respectively	0	0
Common stock, $0.001 par value; 120,000,000 shares authorized at September 30, 2023 and December 31, 2022; 5,148,220 and 772,203 shares issued at September 30, 2023 and December 31, 2022, respectively; 5,148,219 and 772,202 shares outstanding at September 30, 2023 and December 31, 2022, respectively	5	0
Additional paid-in capital	850,202	837,598
Accumulated deficit	(839,669)	(824,532)
Treasury stock (at cost); 1 share	(3,054)	(3,054)
Total stockholders’ equity	7,484	10,012
Total liabilities, mezzanine equity & stockholders’ equity	36,057	37,954
Series A Preferred Stock [Member]
Current Liabilities:
Series A redeemable preferred stock, $0.001 par value; 0 and 40,000 shares authorized; 0 and 38,610.119 shares issued and outstanding at September 30, 2023 and December 31, 2022, respectively	$ 0	$ 0