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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Cash flows from operating activities:    
Net income/(loss) for the period $ (714) $ (947)
Adjustments to reconcile net income/(loss) for the period to net cash provided by/(used in) operations    
Depreciation and amortization 153 191
Stock-based compensation 142 228
(Gain)/loss on disposal of marketable securities   (12)
Gain on disposal of mineral property (150) (1,958)
(Gain)/loss on other investments (543) 738
Change in working capital account items:    
Other current assets (10) 75
Accounts payable, accrued liabilities and other 36 324
Net cash provided by/(used in) operating activities (1,086) (1,361)
Cash flows from investing activities:    
Proceeds from sales of marketable securities   41
Proceeds from sale of other investments, net   2,772
Disposition of short-term investments, net of acquisitions 2,581  
Proceeds from option/sale agreements, net 150 3,494
Net cash provided by/(used in) investing activities 2,731 6,307
Net decrease in cash and cash equivalents 1,645 4,946
Cash and cash equivalents, beginning of period 902 3,714
Cash and cash equivalents, end of period $ 2,547 $ 8,660