UNAUDITED CONSOLIDATED STATEMENTS OF INCOME/(LOSS) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Operating income/(expense:):
Gain on disposal of mineral property interests, net (Note 4)	$ 2,568		$ 2,568
Exploration, property evaluation and holding costs	(960)	$ (947)	(1,908)	$ (1,893)
Corporate administration	(877)	(1,067)	(2,253)	(2,214)
Depreciation and amortization	(11)	(14)	(23)	(26)
Total operating income/(expense)	720	(2,028)	(1,616)	(4,133)
Non-operating income/(expense):
Gain (loss) on other investments (Note 3)	1,099	(1,093)	(30)	(1,717)
Interest income	4	34	14	76
Other income	79	43	34	78
Total non-operating income/(expense)	1,182	(1,016)	18	(1,563)
Income/(loss) before income taxes	1,902	(3,044)	(1,598)	(5,696)
Net income/(loss)	$ 1,902	$ (3,044)	$ (1,598)	$ (5,696)
Basic:
Weighted average number of shares outstanding (in shares)	101,372,460	100,537,541	101,035,292	100,431,813
Net income/(loss) per share (Note 6), Basic (in dollars per share)	$ 0.01	$ (0.03)	$ (0.02)	$ (0.06)
Diluted:
Weighted average number of shares outstanding (in shares)	103,863,384	100,537,541	101,035,292	100,431,813
Net income/(loss) per share, Diluted (in dollars per share)	$ 0.02	$ (0.03)	$ (0.02)	$ (0.06)