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CONDENSED CONSOLIDATED STATEMENTS OF INCOME/(LOSS) AND COMPREHENSIVE INCOME/(LOSS)
AUD in Thousands, $ in Thousands
 3 Months Ended
Mar. 31, 2016
USD ($)
$ / shares
shares
Mar. 31, 2015
USD ($)
$ / shares
shares
CONDENSED CONSOLIDATED STATEMENTS OF INCOME/(LOSS) AND COMPREHENSIVE INCOME/(LOSS) [Abstract]    
Revenues $ 0 $ 0
Operating expense:    
Exploration, property evaluation and holding costs (987) (975)
Corporate administration (1,088) (1,044)
Depreciation and amortization (153) (191)
Gain on disposal of mineral property, net (Note 4) 150 1,958
Total operating expense (2,078) (252)
Non-operating income/(expenses):    
Gain/(loss) on sale of marketable securities   12
Gain/(loss) on other investments (Note 3) 543 (738)
Research and development grant, net (Note 10) 744  
Interest income 12 1
Other income/(expense) 65 30
Total non-operating income/(expense) 1,364 (695)
Net income/(loss) (714) (947)
Other comprehensive income/(loss):    
Unrealized fair value increase/(decrease) on available-for-sale securities 17 (24)
Comprehensive income/(loss) $ (697) $ (971)
Basic:    
Weighted average number of basic shares outstanding (in shares) | shares 82,888,987 82,390,217
Net income/(loss) per share, Basic | $ / shares $ (0.01) $ (0.01)
Diluted:    
Weighted average number of diluted shares outstanding (in shares) | shares 82,888,987 82,390,217
Net income/(loss) per share, Diluted | $ / shares $ (0.01) $ (0.01)