UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF INCOME/(LOSS) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Operating income/(expense):
Gain on disposal of mineral property interests (Note 3)				$ 2,883
Exploration, property evaluation and holding costs	$ (848)	$ (916)	$ (2,334)	(3,689)
Corporate administration	(666)	(779)	(2,712)	(3,056)
Depreciation and amortization	(10)	(10)	(30)	(34)
Total operating expense, net	(1,524)	(1,705)	(5,076)	(3,896)
Non-operating income:
Interest income	68	37	207	47
Other income/(expense)	2	(24)	(59)	413
Total non-operating income	70	13	148	460
Loss before income taxes	(1,454)	(1,692)	(4,928)	(3,436)
Net loss	$ (1,454)	$ (1,692)	$ (4,928)	$ (3,436)
Basic:
Weighted average number of shares outstanding (in shares)	121,088,494	118,127,920	120,263,330	117,886,906
Net loss per share	$ (0.01)	$ (0.02)	$ (0.04)	$ (0.03)
Diluted:
Weighted average number of shares outstanding (in shares)	121,088,494	118,127,920	120,263,330	117,886,906
Net loss per share	$ (0.01)	$ (0.02)	$ (0.04)	$ (0.03)

The costs incurred to retain exploration and property rights after acquisition but before production has occurred. Costs include legal costs for title defense, ad valorem taxes on nonproducing mineral properties, shut-in royalties, and delay rentals.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-28

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.3)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2