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Consolidated Statements of Cash Flows (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Operating activities:    
Net loss $ (2,005) $ (3,598)
Adjustments to reconcile net loss to net cash used in operating activities:    
(Gain) loss on derivative instruments (90) 30
Depreciation and amortization 26 61
Gain on early termination of debt (313)   
Loss on equity method investment 1,012 488
Property abandonment and impairment 13 31
Employee stock option expense 420 732
Deferred income taxes (176) (648)
(Gain) loss on warrant liability (998) 488
Amortization of interest on debt discounts    332
Gain on asset and equity security sales (153) (1,536)
Changes in operating assets and liabilities:    
Prepaid expenses and other current assets 78 200
Accounts payable and other current liabilities (51) (84)
Net cash used in operating activities (2,237) (3,504)
Investing activities:    
Additions to mineral properties (2,173) (3,457)
Additions to other assets (318) (397)
Sale of derivative instrument, net 90 51
Proceeds from sale of mineral property 4,000 6,000
Proceeds from sale of marketable equity securities 838 1,664
Proceeds from sale of other assets 80 9
Net cash provided by investing activities 2,517 3,870
Financing activities:    
Short-term borrowing 2,300 2,665
Repayment of short-term borrowing (2,998) (3,165)
Repayment of long-term debt (2,050) (750)
Proceeds from issuance of debt, net 2,000 912
Proceeds from issuance of common stock , net 2,060 275
Proceeds from exercise of options 184   
Payment to noncontrolling interest (550) (300)
Noncontrolling interest contribution, net 250 181
Net cash provided by (used in) financing activities 1,196 (182)
Net increase (decrease) in cash and cash equivalents 1,476 184
Cash and cash equivalents, beginning of year 616 432
Cash and cash equivalents, end of year 2,092 616
Cash paid for interest, capitalized to mineral property 186 87
Capitalized non-cash interest 540   
Capitalized depreciation 30   
Issuance of stock for mineral property 41   
Issuance of stock to non-controlling interest 381 71
Shares of Ely marketable equity securities received upon payment of Augusta debt 1,800   
Royalty sale receivable    4,000
Transfer of contra-noncontrolling interest to noncontrolling interest upon earn-in    531
Disproportionate share entry from noncontrolling interest to additional paid in capital upon earn-in    2,983
Debt financing costs    $ 588