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Note 8 - Shareholders' Equity | 6 Months Ended
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Jun. 30, 2013
Stockholders' Equity Note [Abstract] |
Stockholders' Equity Note Disclosure [Text Block] | Note 8. Shareholders’ Equity S hare-based Compensation Plans We periodically grant restricted stock unit awards and/or shares of common stock to our employees and directors. Grants to individual executives upon hiring or retention vest over a defined service period, with cost amortized over that period. We measure compensation cost for restricted stock units and stock grants at the closing price of our stock at the time of grant. Restricted stock unit grants vest after a named period with compensation cost amortized over that period. Previously, we also granted stock options, but currently do not. Although we have no current plans to issue stock options, we may do so in the future. On June 21, 2013, the Board of Directors granted 954,438 restricted stock units to employees, with one third of those vesting in June 2014, one third vesting in June 2015, and one third vesting in June 2016. The Board of Directors granted an additional 633,960 restricted stock units on June 21, 2013 that vest in June 2014. The $2.8 million in expense related to the unit awards vesting in 2014 will be recognized on a straight-line basis over the next twelve months, while the $2.9 million in expense related to awards vesting in each of 2015 and 2016 will be recognized over the next twenty-four and thirty-six month periods, respectively. In the second quarter of 2013, a total of 122,250 common shares were issued to nonemployee directors. We issued a total of 77,976 common shares to nonemployee directors in the second quarter of 2012. Stock-based compensation expense for restricted stock unit grants to employees and shares issued to nonemployee directors recorded in the first six months of 2013 totaled $1.9 million, compared to $1.5 million in the same period last year. Under the terms of our equity compensation plans, we have permitted our employees' withholding tax obligations with respect to shares awarded thereunder which have vested to be satisfied by net share settlement. As a result, in the first half of 2013, we repurchased 83,433 shares for $0.1 million, or approximately $1.55 per share. Common Stock Dividends In September 2011 and February 2012, our Board of Directors adopted a common stock dividend policy that has two components: (1) a dividend that links the amount of dividends on our common stock to our average quarterly realized silver price in the preceding quarter, and (2) a minimum annual dividend of $0.01 per share of common stock, in each case, payable quarterly, when and if declared. For illustrative purposes only, the table below summarizes potential per share dividend amounts at different quarterly average realized price levels according to the first component of the policy:
| Quarterly average realized silver price per ounce |  |  | Quarterly dividend per share |  |  | Annualized dividend per share |
|  | $30 |  |  |  | $0.01 |  |  |  | $0.04 |
|  | $35 |  |  |  | $0.02 |  |  |  | $0.08 |
|  | $40 |  |  |  | $0.03 |  |  |  | $0.12 |
|  | $45 |  |  |  | $0.04 |  |  |  | $0.16 |
|  | $50 |  |  |  | $0.05 |  |  |  | $0.20 |
|  | $55 |  |  |  | $0.06 |  |  |  | $0.24 |
|  | $60 |  |  |  | $0.07 |  |  |  | $0.28 |
On August 6, 2013, our Board of Directors declared a common stock dividend, pursuant to the minimum annual dividend component of the policy described above, of $0.0025 per share, for a total dividend of $0.9 million payable in September 2013. Because the average realized silver price for the second quarter of 2013 was $16.27 per ounce, below the minimum threshold of $30 according to the policy, no silver-price-linked component was declared or paid. The declaration and payment of common stock dividends is at the sole discretion of our Board of Directors. Status of Warrants The following table summarizes certain information about our stock purchase warrants at June 30, 2013:
Warrants Outstanding |  | Warrants |  |  | Exercise Price |  | Expiration Date
Series 1 warrants |  |  | 5,200,519 |  |  | $ | 2.40 |  | June 2014
Series 1 warrants |  |  | 460,976 |  |  |  | 2.51 |  | June 2014
Series 3 warrants |  |  | 16,671,128 |  |  |  | 2.45 |  | August 2014
Total warrants outstanding |  |  | 22,332,623 |  |  |  |  |  |
No warrants were exercised during the first six months of 2013. Under the financial terms of the Consent Decree settling the Coeur d'Alene Basin litigation, the proceeds from the exercise of our outstanding warrants will be paid to the United States and the Coeur d'Alene Indian Tribe within 30 days after the end of the quarter when exercised. If the warrants are not exercised, we are responsible for its final payment under the Consent Decree. Common Stock Repurchase Program On May 8, 2012, we announced that our Board of Directors approved a stock repurchase program. Under the program, we are authorized to repurchase up to 20 million shares of our outstanding common stock from time to time in open market or privately negotiated transactions, depending on prevailing market conditions and other factors. The repurchase program may be modified, suspended or discontinued by us at any time. Whether or not we engage in repurchases from time to time may depend on a variety of factors, including not only price and cash resources, but customary black-out restrictions, whether we have any material inside information, limitations on share repurchases or cash usage that may be imposed by our credit agreement or in connection with issuances of securities, alternative uses for cash, applicable law, and other investment opportunities from time to time. As of June 30, 2013, 400,300 shares have been purchased at an average price of $5.56 per share, leaving 19.6 million shares that may yet be purchased under the program. The closing price of our common stock at August 6, 2013, was $2.95 per share.

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- Definition The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29-31) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21506-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30, 31 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 4.E) -URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74512-122707 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SAB TOPIC 4.C) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187143-122770 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Article 4 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 4 -Section C Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 4 -Section E Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(d),(e)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Preferred Stock -URI http://asc.fasb.org/extlink&oid=6521494 Reference 11: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 12: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 13: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 14: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644 Reference 15: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21564-112644 Reference 16: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21488-112644 Reference 17: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21484-112644 Reference 18: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph d -Article 4 Reference 19: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23285-112656 + Details
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