Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Assets:
Cash and cash equivalents	$ 2,121	$ 3,003
Other assets	40	80
Total assets	2,161	3,083
Liabilities:
Accounts payable and accrued liabilities	819	684
Total liabilities	819	684
Commitments and contingencies (Note 6)
Stockholders' equity:
Common stock ($0.01 par value, 85,000 authorized in 2022 and 85,000 authorized in 2021, 46,410 issued and 40,738 outstanding in 2022 and 46,410 issued and 40,738 outstanding in 2021)	464	464
Additional paid-in capital	548,304	548,304
Accumulated deficit	(542,258)	(541,201)
Treasury stock, at cost - 2022 - 5,672 shares; and 2021 - 5,672 shares	(5,168)	(5,168)
Total stockholders' equity	1,342	2,399
Total liabilities and stockholders' equity	$ 2,161	$ 3,083