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Consolidated Balance Sheets - USD ($)
$ in Thousands
Mar. 31, 2016
Dec. 31, 2015
Current assets:    
Cash and cash equivalents $ 1,036 $ 17,718
Short-term investments 16,015
Investments in marketable equity securities, at fair value 371 $ 202
Prepaid expenses and other 52 70
Total current assets 17,474 17,990
Mineral properties 19 19
Other assets 43 45
Total assets 17,536 18,054
Current liabilities:    
Accounts payable 82 175
Warrant liability 1 $ 4
Other 41
Total current liabilities $ 124 $ 179
Shareholders’ equity:    
Preferred stock, $0.01 par value, authorized 10,000,000 shares (none issued and outstanding at March 31, 2016 and December 31, 2015)
Common stock, $0.01 par value, authorized 100,000,000 shares (38,995,189 and 39,169,189 shares, respectively, issued and outstanding at March 31, 2016 and December 31, 2015) $ 390 $ 392
Additional paid-in capital 54,984 55,063
Accumulated deficit (38,180) (37,691)
Accumulated other comprehensive income 218 111
Total shareholders’ equity 17,412 17,875
Total liabilities and shareholders’ equity $ 17,536 $ 18,054