Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Current Assets:
Cash and cash equivalents	$ 4,235	$ 6,172
Prepaid expenses and other current assets	987	1,205
Total current assets	5,222	7,377
Property and equipment, net	239	262
Restricted cash	163	154
Operating lease right-of-use assets	1,737	1,853
Intangible assets	25,250	25,250
Goodwill	2,574	3,058
Total assets	35,185	37,954
Current Liabilities:
Accounts payable	753	249
Accrued expenses	1,621	1,552
Operating lease liabilities - current portion	389	404
Loans payable - current portion	0	252
Total current liabilities	2,763	2,457
Operating lease liabilities - non-current portion	1,512	1,624
Restructured debt liability - contingent milestone payments	15,000	15,000
Other liabilities	3,800	3,800
Deferred tax liabilities	5,081	5,061
Total liabilities	28,156	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 March 31, 2023 and December 31, 2022, respectively	0	0
Common stock, $0.001 par value; 120,000,000 shares authorized at March 31, 2023 and December 31, 2022; 909,014 and 772,203 shares issued at March 31, 2023 and December 31, 2022, respectively; 909,013 and 772,202 shares outstanding at March 31, 2023 and December 31, 2022, respectively	1	0
Additional paid-in capital	838,725	837,598
Accumulated deficit	(828,643)	(824,532)
Treasury stock (at cost); 1 share	(3,054)	(3,054)
Total stockholders’ equity	7,029	10,012
Total liabilities, mezzanine equity & stockholders’ equity	35,185	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 March 31, 2023 and December 31, 2022, respectively	$ 0	$ 0