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Consolidated Statements of Shareholders' Equity (USD $) In Thousands, except Share data, unless otherwise specified | Common Stock Issuance of shares for cash in public offering, net of issuance costs of $838 | Common Stock Issuance of shares for royalty buy-down | Common Stock Issuance of shares and $200 of cash to noncontrolling shareholder for future earn-in | Common Stock Issuance of shares on exercise of stock options | Common Stock | Additional Paid-In Capital Issuance of shares for cash in public offering, net of issuance costs of $838 | Additional Paid-In Capital Issuance of shares for royalty buy-down | Additional Paid-In Capital Issuance of shares and $200 of cash to noncontrolling shareholder for future earn-in | Additional Paid-In Capital Issuance of shares on exercise of stock options | Additional Paid-In Capital Noncontrolling interest equity contribution 1 | Additional Paid-In Capital | Accumulated Deficit | Accumulated Other Comprehensive Income Net unrealized (loss) on marketable equity securities (net of tax of $3,516) | Accumulated Other Comprehensive Income Net unrealized (loss) on marketable equity securities (net of tax of $435) | Accumulated Other Comprehensive Income | Total Solitario Shareholders' Equity Issuance of shares for cash in public offering, net of issuance costs of $838 | Total Solitario Shareholders' Equity Issuance of shares for royalty buy-down | Total Solitario Shareholders' Equity Issuance of shares and $200 of cash to noncontrolling shareholder for future earn-in | Total Solitario Shareholders' Equity Issuance of shares on exercise of stock options | Total Solitario Shareholders' Equity Noncontrolling interest equity contribution 1 | Total Solitario Shareholders' Equity Net unrealized (loss) on marketable equity securities (net of tax of $3,516) | Total Solitario Shareholders' Equity Net unrealized (loss) on marketable equity securities (net of tax of $435) | Total Solitario Shareholders' Equity | Non-controlling Interest Noncontrolling interest equity contribution 1 | Non-controlling Interest Noncontrolling interest equity contribution 3 | Non-controlling Interest Noncontrolling interest equity contribution 2 | Non-controlling Interest | Contra Non-controlling Interest Issuance of shares and $200 of cash to noncontrolling shareholder for future earn-in | Contra Non-controlling Interest | Issuance of shares for cash in public offering, net of issuance costs of $838 | Issuance of shares for royalty buy-down | Issuance of shares and $200 of cash to noncontrolling shareholder for future earn-in | Issuance of shares on exercise of stock options | Noncontrolling interest equity contribution 1 | Net unrealized (loss) on marketable equity securities (net of tax of $3,516) | Net unrealized (loss) on marketable equity securities (net of tax of $435) | Noncontrolling interest equity contribution 3 | Noncontrolling interest equity contribution 2 | Total
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Beginning balance, Value at Dec. 31, 2008 |  |  |  |  | $ 297 |  |  |  |  |  | $ 35,611 | $ (31,144) |  |  | $ 12,454 |  |  |  |  |  |  |  | $ 17,218 |  |  |  | $ 833 |  | $ 0 |  |  |  |  |  |  |  |  |  | $ 18,051
Beginning balance, Shares at Dec. 31, 2008 |  |  |  |  | 29,750,242 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Comprehensive income: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net loss |  |  |  |  |  |  |  |  |  |  |  | (1,786) |  |  |  |  |  |  |  |  |  |  | (1,786) |  |  |  | (419) |  |  |  |  |  |  |  |  |  |  |  | (2,205)
Net unrealized loss on marketable equity securities |  |  |  |  |  |  |  |  |  |  |  |  |  | (732) |  |  |  |  |  |  |  | (732) |  |  |  |  |  |  |  |  |  |  |  |  |  | (732) |  |  |
Comprehensive loss |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (2,518) |  |  |  | (419) |  |  |  |  |  |  |  |  |  |  |  | (2,937)
Loan to non-controlling interest |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ending balance, Value at Dec. 31, 2009 |  |  |  |  | 297 |  |  |  |  |  | 35,611 | (32,930) |  |  | 11,722 |  |  |  |  |  |  |  | 14,700 |  |  |  | 414 |  |  |  |  |  |  |  |  |  |  |  | 15,114
Ending balance, Shares at Dec. 31, 2009 |  |  |  |  | 29,750,242 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Comprehensive income: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net loss |  |  |  |  |  |  |  |  |  |  |  | (4,066) |  |  |  |  |  |  |  |  |  |  | (4,066) |  |  |  | (1,274) |  |  |  |  |  |  |  |  |  |  |  | (5,340)
Comprehensive loss |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (4,002) |  |  |  | (1,274) |  |  |  |  |  |  |  |  |  |  |  | (5,276)
Noncontrolling interest equity contribution |  |  |  |  |  |  |  |  |  | 1,188 |  |  |  |  |  |  |  |  |  | 1,188 |  |  |  | 1,594 |  | 3,000 |  |  |  |  |  |  |  | 2,782 |  |  |  | 3,000 |
Deconsolidation of PBM subsidiary |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (1,844) |  |  |  |  |  |  |  |  |  |  |  | (1,844)
Net unrealized gain on marketable equity securities (net of tax of $163) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 64 |  |  |  |  |  |  |  | 64 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 64
Loan to non-controlling interest |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ending balance, Value at Dec. 31, 2010 |  |  |  |  | 297 |  |  |  |  |  | 36,799 | (36,996) |  |  | 11,786 |  |  |  |  |  |  |  | 11,886 |  |  |  | 1,890 |  |  |  |  |  |  |  |  |  |  |  | 13,776
Ending balance, Shares at Dec. 31, 2010 |  |  |  |  | 29,750,242 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Comprehensive income: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net loss |  |  |  |  |  |  |  |  |  |  |  | (3,377) |  |  |  |  |  |  |  |  |  |  | (3,377) |  |  |  | (3,591) |  |  |  |  |  |  |  |  |  |  |  | (6,968)
Net unrealized loss on marketable equity securities |  |  |  |  |  |  |  |  |  |  |  |  | (5,909) |  |  |  |  |  |  |  | (5,909) |  |  |  |  |  |  |  |  |  |  |  |  |  | (5,909) |  |  |  |
Comprehensive loss |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (9,286) |  |  |  | (3,591) |  |  |  |  |  |  |  |  |  |  |  | (12,877)
Noncontrolling interest equity contribution |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 584 |  |  |  |  |  |  |  |  |  |  |  | 584 |  |
Cumulative effect of change in accounting principle, net of deferred tax of $543 |  |  |  |  |  |  |  |  |  |  | 1,240 | 992 |  |  |  |  |  |  |  |  |  |  | 2,232 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,232
Issuance of common stock, Value | 39 | 3 | 1 | 2 |  | 8,898 | 997 | 139 | 245 |  |  |  |  |  |  | 8,937 | 1,000 | 140 | 247 |  |  |  |  |  |  |  |  | (340) |  | 8,937 | 1,000 | (200) | 247 |  |  |  |  |  |
Issuance of common stock, Shares | 3,910,000 | 344,116 | 50,000 | 150,600 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan to non-controlling interest |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (504) |  |  |  |  |  |  |  |  |  |  |  | (504)
Stock option expense |  |  |  |  |  |  |  |  |  |  | 697 |  |  |  |  |  |  |  |  |  |  |  | 697 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 697
Accrued interest on advance to non-controlling interest |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (19) |  |  |  |  |  |  |  |  |  |  |  | (19)
Ending balance, Value at Dec. 31, 2011 |  |  |  |  | $ 342 |  |  |  |  |  | $ 49,015 | $ (39,381) |  |  | $ 5,877 |  |  |  |  |  |  |  | $ 15,853 |  |  |  | $ (1,640) |  | $ (340) |  |  |  |  |  |  |  |  |  | $ 13,873
Ending balance, Shares at Dec. 31, 2011 |  |  |  |  | 34,204,958 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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