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Consolidated Statements of Operations (USD $) In Thousands, except Share data, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
Property and joint venture revenue |  |  |
Joint venture property payments | $ 242 | $ 200 | $ 200
Costs, expenses and other: |  |  |
Exploration expense | 5,946 | 4,033 | 3,579
Depreciation and amortization | 46 | 67 | 91
General and administrative | 2,857 | 4,280 | 2,079
Loss (gain) on derivative instruments | 137 | (152) | (694)
Property abandonment and impairment | 10 | 55 | 51
(Gain) loss on sale of assets |  | (22) | 18
Interest and dividend income (net) | 163 | (63) | (106)
Total costs, expenses and other | 9,159 | 8,198 | 5,018
Other Income |  |  |
Gain on sale of marketable equity securities | 1,937 | 995 | 1,409
Equity in net loss of equity method investment | (623) | (220) |
Gain on deconsolidation of PBM subsidiary |  | 724 |
Break fee on attempted acquisition |  |  | 2,200
Total other income | 1,314 | 1,499 | 3,609
Loss before income tax | (7,603) | (6,499) | (1,209)
Income tax benefit (expense) | 635 | 1,159 | (996)
Net loss | (6,968) | (5,340) | (2,205)
Less net loss attributable to noncontrolling interest | 3,591 | 1,274 | 419
Net loss attributable to Solitario shareholders | $ (3,377) | $ (4,066) | $ (1,786)
Loss per common share attributable to Solitario shareholders: |  |  |
Basic and diluted | $ (0.10) | $ (0.14) | $ (0.06)
Weighted average shares outstanding: |  |  |
Basic and diluted | 32,807 | 29,750 | 29,750

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- Definition The capitalized costs incurred during the period (excluded from amortization) to purchase, lease or otherwise acquire an unproved property, including costs of lease bonuses and options to purchase or lease properties, the portion of costs applicable to minerals when land including mineral rights is purchased in fee, brokers' fees, recording fees, legal costs, and other costs incurred in acquiring properties. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 4 -Section 10 -Paragraph c -Subparagraph 3(ii)(A) Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-10.(c)(7)(ii)) -URI http://asc.fasb.org/extlink&oid=6949603&loc=d3e511914-122862 + Details
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- Definition Exploration expenses (including prospecting) related to oil and gas producing entities and would be included in operating expenses of that entity. Costs incurred in identifying areas that may warrant examination and in examining specific areas that are considered to have prospects of containing oil and gas reserves, including costs of drilling exploratory wells and exploratory-type stratigraphic test wells. Exploration costs may be incurred both before acquiring the related property (sometimes referred to in part as prospecting costs) and after acquiring the property. Principal types of exploration costs, which include depreciation and applicable operating costs of support equipment and facilities and other costs of exploration activities, are: (i) Costs of topographical, geographical and geophysical studies, rights of access to properties to conduct those studies, and salaries and other expenses of geologists, geophysical crews, and others conducting those studies. Collectively, these are sometimes referred to as geological and geophysical or "G&G" costs. (ii) Costs of carrying and retaining undeveloped properties, such as delay rentals, ad valorem taxes on properties, legal costs for title defense, and the maintenance of land and lease records. (iii) Dry hole contributions and bottom hole contributions. (iv) Costs of drilling and equipping exploratory wells. (v) Costs of drilling exploratory-type stratigraphic test wells. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 360 -Section 25 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=6474861&loc=d3e64954-109465 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-10.(a)(15)) -URI http://asc.fasb.org/extlink&oid=6949603&loc=d3e511914-122862 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Audit and Accounting Guide (AAG) -Number AAG-OGP -Chapter 2 -Paragraph 48 -IssueDate 2006-05-01 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 19 -Paragraph 17 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 10 -Paragraph a -Subparagraph 15 -Article 4 + Details
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