Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
CURRENT ASSETS:
Cash and cash equivalents	$ 135	$ 109
Restricted cash	13,925	0
Prepaid expenses	226	244
Other current assets	24	30
Total current assets	14,310	383
Intangible assets, net	1,252	1,359
Operating lease right-of-use assets	3	4
Other assets, net	4	5
Total assets	15,569	1,751
CURRENT LIABILITIES:
Accounts payable	810	901
Accrued expenses:
Salaries and wages	47	23
Professional fees	29	79
Other accrued expenses	501	486
Related party note payable, current portion	130	139
Convertible notes, current portion	1,375	625
Operating lease liabilities	3	4
Total current liabilities	2,895	2,257
LONG-TERM LIABILITIES:
Secured contingent payment obligation	38,903	40,708
Unsecured contingent payment obligations	6,545	5,089
Convertible notes, net of current portion	3,663	3,913
Related party note payable, net of current portion	440	473
Total long-term liabilities	49,551	50,183
Total liabilities	52,446	52,440
COMMITMENTS AND CONTINGENCIES
SHAREHOLDERS' DEFICIT:
Common stock, $0.01 par value, 175,000 shares authorized, 84,523 and 81,246 shares issued and outstanding at March 31, 2023 and December 31, 2022, respectively	845	812
Additional paid-in capital	392,388	391,724
Accumulated deficit	(430,110)	(443,225)
Total shareholders' deficit	(36,877)	(50,689)
Total liabilities and shareholders' deficit	$ 15,569	$ 1,751