Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
General and administrative expense	$ 1,313	$ 1,360	$ 3,684	$ 3,740
Operating loss	(1,313)	(1,360)	(3,684)	(3,740)
Other income (loss), net	1,661	(1,012)	1,486	(2,979)
Interest income	198	230	721	476
Equity income (loss), net	386	(1,022)	(3,937)	(3,147)
Net income (loss) before income taxes	932	(3,164)	(5,414)	(9,390)
Income tax benefit (expense)	0	0	0	0
Net income (loss)	$ 932	$ (3,164)	$ (5,414)	$ (9,390)
Net income (loss) per share:
Basic (in dollars per share)	$ 0.06	$ (0.19)	$ (0.33)	$ (0.57)
Diluted (in dollars per share)	$ 0.06	$ (0.19)	$ (0.33)	$ (0.57)
Weighted average shares used in computing income (loss) per share:
Basic (in shares)	16,285	16,281	16,167	16,405
Diluted (in shares)	16,285	16,281	16,167	16,405