Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Current Assets:
Cash and cash equivalents	$ 38,490	$ 16,930
Prepaid expenses and other current assets	851	1,188
Total current assets	39,341	18,118
Property and equipment, net	879	924
Restricted cash	154	154
Operating lease right-of-use assets	2,747	917
Intangible assets	77,090	77,090
Goodwill	15,682	15,682
Total assets	135,893	112,885
Current Liabilities:
Accounts payable	939	1,161
Accrued expenses	3,744	3,813
Operating lease liabilities - current portion	392	805
Loans payable - current portion	2,409	352
Total current liabilities	7,484	6,131
Operating lease liabilities - non-current portion	2,438	201
Loans payable - non-current portion		2,423
Restructured debt liability - contingent milestone payments	15,000	15,000
Other liabilities	2,800	2,800
Deferred tax liabilities	16,683	16,778
Total liabilities	44,405	43,333
Stockholders’ Equity:
Preferred stock, $0.001 par value; 5,000,000 shares authorized; 0 shares issued and outstanding at March 31, 2021 and December 31, 2020
Common stock, $0.001 par value; 120,000,000 shares authorized at March 31, 2021 and December 31, 2020; 26,257,089 and 16,921,506 shares issued at March 31, 2021 and December 31, 2020, respectively; 26,257,065 and 16,921,482 shares outstanding at March 31, 2021 and December 31, 2020, respectively	26	17
Additional paid-in capital	821,165	790,277
Accumulated deficit	(726,649)	(717,688)
Treasury stock (at cost); 24 shares	(3,054)	(3,054)
Total stockholders’ equity	91,488	69,552
Total liabilities & stockholders’ equity	$ 135,893	$ 112,885