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Consolidated Statements of Cash Flows (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Operating activities:    
Net loss $ (862) $ (694)
Adjustments to reconcile net loss to net cash used in operating activities:    
Unrealized gain on derivative instruments (66) (54)
Depreciation and amortization 14 11
Loss on equity method investment 109 221
Employee stock option expense 174 174
Deferred income tax expense (benefit) (109) 245
Amortization of discount on long-term debt 53 64
(Gain) on asset and equity security sales (332) (1,568)
Changes in operating assets and liabilities:    
Prepaid expenses and other current assets 239 (26)
Accounts payable and other current liabilities (111) (353)
Net cash used in operating activities (891) (1,980)
Investing activities:    
Additions to mineral properties (335) (160)
Additions to other assets (9) (107)
Proceeds from sale of marketable equity securities 353 1,648
Net cash provided by investing activities 9 1,381
Financing activities:    
Short-term borrowing (net) 787 1,075
Proceeds on exercise of options    36
Non-controlling interest contribution 50 80
Repayment of long-term debt    (500)
Payment to non-controlling investor (150) (100)
Net cash provided by financing activities 687 591
Net decrease in cash and cash equivalents (195) (8)
Cash and cash equivalents, beginning of period 432 478
Cash and cash equivalents, end of period 237 470
Loan to non controlling interest 49   
Issuance of stock to noncontrolling interest 41   
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 3,563   
Reclassification of stock option liability to additional paid-in-capital    1,240
Reclassification of stock option liability to accumulated deficit, net of deferred taxes of $543    $ 992