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STOCKHOLDERS' EQUITY: | 3 Months Ended
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Mar. 31, 2013
STOCKHOLDERS' EQUITY: |
STOCKHOLDERS' EQUITY: | NOTE 12 — STOCKHOLDERS´EQUITY: Treasury Stock: Activity in treasury stock in the three-month period ended March 31, 2013 and 2012 is as follows (in millions):
|  | 2013 |  | 2012 |
Southern Copper common shares |  |  |  |  |
Balance as of January 1, |  | $ | 729.8 |  | $ | 734.1 |
Purchase of shares |  |  |  |  |
Stock dividend |  | — |  | (151.4 | )
Balance as of March 31, |  | 729.8 |  | 582.7 |
Parent Company (Grupo Mexico) common shares |  |  |  |  |
Balance as of January 1, |  | 189.0 |  | 163.7 |
Other activity, including dividend, interest and currency translation effect |  | 12.4 |  | 13.7 |
Balance as of March 31, |  | 201.4 |  | 177.4 |
Treasury stock balance as of March 31, |  | $ | 931.2 |  | $ | 760.1 |
On February 28, 2012, the Company paid a stock dividend of 0.0107 shares of common stock per share of SCC common stock. The stock dividend was paid with shares of common stock held in treasury by SCC. Shares held in treasury on the record date were not entitled to receive cash or stock dividend. Southern Copper Common Shares: At March 31, 2013 and 2012, there were in treasury 39,045,536 and 34,617,600 SCC’s common shares, respectively. Parent Company common shares: At March 31, 2013 and 2012 there were in treasury 76,394,108 and 83,717,588 of Grupo Mexico’s common shares, respectively. Employee Stock Purchase Plan: In January 2007, the Company offered to eligible employees a stock purchase plan (the “Employee Stock Purchase Plan”) through a trust that acquires shares of Grupo Mexico stock for sale to its employees, employees of subsidiaries, and certain affiliated companies. The purchase price is established at the approximate fair market value on the grant date. Every two years employees will be able to acquire title to 50% of the shares paid in the previous two years. The employees will pay for shares purchased through monthly payroll deductions over the eight year period of the plan. At the end of the eight year period, the Company will grant the participant a bonus of 1 share for every 10 shares purchased by the employee. If Grupo Mexico pays dividends on shares during the eight year period, the participants will be entitled to receive the dividend in cash for all shares that have been fully purchased and paid as of the date that the dividend is paid. If the participant has only partially paid for shares, the entitled dividends will be used to reduce the remaining liability owed for purchased shares. In the case of voluntary resignation of the employee, the Company will pay to the employee the fair market sales price at the date of resignation of the fully paid shares, net of costs and taxes. When the fair market sales value of the shares is higher than the purchase price, the Company will apply a deduction over the amount to be paid to the employee based on the following schedule:
If the resignation occurs during: |  | % Deducted |
1st year after the grant date |  | 90 | %
2nd year after the grant date |  | 80 | %
3rd year after the grant date |  | 70 | %
4th year after the grant date |  | 60 | %
5th year after the grant date |  | 50 | %
6th year after the grant date |  | 40 | %
7th year after the grant date |  | 20 | %
In the case of involuntary termination of the employee, the Company will pay to the employee the fair market sales price at the date of termination of employment of the fully paid shares, net of costs and taxes. When the fair market value of the shares is higher than the purchase price, the Company will apply a deduction over the amount to be paid to the employee based on the following schedule:
If the termination occurs during: |  | % Deducted |
1st year after the grant date |  | 100 | %
2nd year after the grant date |  | 95 | %
3rd year after the grant date |  | 90 | %
4th year after the grant date |  | 80 | %
5th year after the grant date |  | 70 | %
6th year after the grant date |  | 60 | %
7th year after the grant date |  | 50 | %
In case of retirement or death of the employee, the Company will render the buyer or his legal beneficiary, the fair market sales value as of the date of retirement or death of the shares effectively paid, net of costs and taxes. The stock based compensation expense for the first quarter 2013 and 2012, under the Employee Stock Purchase Plan and the unrecognized compensation expense as of March 31, 2013 and 2012 under this plan were as follows (in million):
|  | 2013 |  | 2012 |
Stock based compensation expense |  | $ | 0.5 |  | $ | 0.5 |
Unrecognized compensation expense |  | $ | 3.7 |  | $ | 5.9 |
The unrecognized compensation expense under this plan is expected to be recognized over the remaining one year and nine month period. The following table presents the stock award activity of the Employee Stock Purchase Plan for the three months ended March 31, 2013 and 2012:
|  | Shares |  | Unit Weighted Average Grant Date Fair Value |
Outstanding shares at January 1, 2013 |  | 6,955,572 |  | $ | 1.16 |
Granted |  | — |  | — |
Exercised |  | (2,349,157 | ) | $ | 1.16 |
Forfeited |  | (29,639 | ) | $ | 1.16 |
Outstanding shares at March 31, 2013 |  | 4,576,776 |  | $ | 1.16 |
Outstanding shares at January 1, 2012 |  | 7,270,341 |  | $ | 1.16 |
Granted |  | — |  | — |
Exercised |  | (36,303 | ) | $ | 1.16 |
Forfeited |  | (90,204 | ) | $ | 1.16 |
Outstanding shares at March 31, 2012 |  | 7,143,834 |  | $ | 1.16 |
During 2010, the Company offered to eligible employees a new stock purchase plan (the “New Employee Stock Purchase Plan”) through a trust that acquires series B shares of Grupo Mexico stock for sale to its employees, employees of subsidiaries, and certain affiliated companies. The purchase price was established at 26.51 Mexican pesos (approximately $2.05) for the initial subscription. The terms of the New Employee Stock Purchase Plan are similar to the terms of the Employee Stock Purchase Plan. The stock based compensation expense for the first quarter 2013 and 2012, under the New Employee Stock Purchase Plan and the unrecognized compensation expense as of March 31, 2013 and 2012 under this plan were as follows (in million):
|  | 2013 |  | 2012 |
Stock based compensation expense |  | $ | 0.1 |  | $ | 0.1 |
Unrecognized compensation expense |  | $ | 3.0 |  | $ | 3.7 |
The unrecognized compensation expense under this plan is expected to be recognized over the remaining five year and nine month period. The following table presents the stock award activity of the New Employee Stock Purchase Plan for the three months ended March 31, 201 3:
|  | Shares |  | Unit Weighted Average Grant Date Fair Value |
Outstanding shares at January 1, 2013 |  | 2,944,742 |  | $ | 2.05 |
Granted |  | — |  | — |
Exercised |  | — |  | — |
Forfeited |  | (22,638 | ) | $ | 2.05 |
Outstanding shares at March 31, 2013 |  | 2,922,104 |  | $ | 2.05 |
Outstanding shares at January 1, 201 2 |  | 3,807,146 |  | $ | 2.05 |
Granted |  | — |  | — |
Exercised |  | (636,945 | ) | $ | 2.05 |
Forfeited |  | (51,675 | ) | $ | 2.05 |
Outstanding shares at March 31, 201 2 |  | 3,118,526 |  | $ | 2.05 |

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- Definition The entire disclosure for shareholders' equity, comprised of portions attributable to the parent entity and noncontrolling interest, if any, including other comprehensive income (as applicable). Including, but not limited to: (1) balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings; (2) accumulated balance for each classification of other comprehensive income and total amount of comprehensive income; (3) amount and nature of changes in separate accounts, including the number of shares authorized and outstanding, number of shares issued upon exercise and conversion, and for other comprehensive income, the adjustments for reclassifications to net income; (4) rights and privileges of each class of stock authorized; (5) basis of treasury stock, if other than cost, and amounts paid and accounting treatment for treasury stock purchased significantly in excess of market; (6) dividends paid or payable per share and in the aggregate for each class of stock for each period presented; (7) dividend restrictions and accumulated preferred dividends in arrears (in aggregate and per share amount); (8) retained earnings appropriations or restrictions, such as dividend restrictions; (9) impact of change in accounting principle, initial adoption of new accounting principle and correction of an error in previously issued financial statements; (10) shares held in trust for Employee Stock Ownership Plan (ESOP); (11) deferred compensation related to issuance of capital stock; (12) note received for issuance of stock; (13) unamortized discount on shares; (14) description, terms, and number of warrants or rights outstanding; (15) shares under subscription and subscription receivables, effective date of new retained earnings after quasi-reorganization and deficit eliminated by quasi-reorganization and, for a period of at least ten years after the effective date, the point in time from which the new retained dates; and (16) retroactive effective of subsequent change in capital structure. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: 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 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 SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 4 -Section E Reference 5: 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 6: 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 7: 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=6959260&loc=d3e187143-122770 Reference 8: 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 9: 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 10: 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 11: 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 Reference 12: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 43 -Section B -Paragraph 7, 11A -Chapter 1 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. 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