Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Current Assets:
Cash and cash equivalents	$ 15,541	$ 22,348
Prepaid expenses and other current assets	906	1,143
Total current assets	16,447	23,491
Property and equipment, net	548	1,011
Restricted cash	154	154
Operating lease right-of-use assets	2,207	2,381
Intangible assets	32,070	32,070
Goodwill	15,682	15,682
Total assets	67,108	74,789
Current Liabilities:
Accounts payable	724	693
Accrued expenses	3,554	3,408
Operating lease liabilities - current portion	472	528
Loans payable - current portion	0	294
Total current liabilities	4,750	4,923
Operating lease liabilities - non-current portion	1,944	2,071
Restructured debt liability - contingent milestone payments	15,000	15,000
Other liabilities	3,800	3,800
Deferred tax liabilities	6,885	7,114
Total liabilities	32,379	32,908
Stockholders’ Equity:
Preferred stock, $0.001 par value; 5,000,000 shares authorized; 0 shares issued and outstanding at March 31, 2022 and December 31, 2021	0	0
Common stock, $0.001 par value; 120,000,000 shares authorized at March 31, 2022 and December 31, 2021; 28,469,298 and 28,268,950 shares issued at March 31, 2022 and December 31, 2021, respectively; 28,469,274 and 28,268,926 shares outstanding at March 31, 2022 and December 31, 2021, respectively	28	28
Additional paid-in capital	831,206	830,231
Accumulated deficit	(793,451)	(785,324)
Treasury stock (at cost); 24 shares	(3,054)	(3,054)
Total stockholders’ equity	34,729	41,881
Total liabilities & stockholders’ equity	$ 67,108	$ 74,789