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Stock-Based Compensation Plans | 12 Months Ended
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Dec. 31, 2012
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Stock-Based Compensation Plans | STOCK-BASED COMPENSATION PLANS Employee Stock Option Plan In 2004, a new Employee Stock Option Plan was approved by shareholders, replacing the prior plan. The Company may grant options for up to 18,000,000 shares under its new Employee Stock Option Plan. The Company has granted options on 13,366,722 shares (net of shares from canceled/expired options) under the new plan through December 31, 2012. Under the plans, the option exercise price equals the stock’s market price on date of grant. The options vest after one to five years, and expire after three to seven years. The fair value of each option grant in the Employee Stock Option Plan was estimated on the date of grant using the Black-Scholes option pricing model with the following weighted-average assumptions for the indicated periods:
| 2012 |  | 2011 |  | 2010
Dividend yield (1) | 2.7 | % |  | 2.7 | % |  | 2.7 | %
Expected volatility (2) | 45.5 | % |  | 41.6 | % |  | 41.0 | %
Risk-free interest rate (3) | 0.8 | % |  | 1.4 | % |  | 2.0 | %
Expected term of options (in years) (4) | 4.1 |  |  | 4.2 |  |  | 4.3 |
Weighted-average grant-date fair value | $ | 6 |  |  | $ | 8 |  |  | $ | 6 |
(1) Represents the Company's estimated cash dividend yield over the expected term of option grant.
(2) | Amount is determined based on analysis of historical price volatility of the Company's common stock. The expected volatility is based on the daily percentage change in the price of the stock over a period equal to the expected term of the option grant.
(3) Represents the U.S. Treasury yield over the expected term of the option grant.
(4) | Represents the period of time that options granted are expected to be outstanding. Based on analysis of historical option exercise activity, the Company has determined that all employee groups exhibit similar exercise and post-vesting termination behavior.
As of December 31, 2012, there was $17,583,516 of unrecognized compensation cost related to share-based payments which is expected to be recognized over the remaining vesting periods, with a weighted-average period of 2.1 years. A summary of the status of the Company’s employee stock option plan at December 31, 2012, 2011 and 2010, and changes during the same periods are presented in the tables and narrative below:
| 2012
| Shares (000) |  | Wtd. Avg. Ex. Price |  | Wtd. Avg. Remaining Contract Life |  | Aggregate Intrinsic Value (000)
Outstanding at Beginning of Year | 7,555 |  |  | $ | 21 |  |  |  |  |
Granted | 2,641 |  |  | 20 |  |  |  |  |
Exercised | (689 | ) |  | 15 |  |  |  |  | $ | 3,810 |
Forfeited | (646 | ) |  | 21 |  |  |  |  |
Outstanding at End of Year | 8,861 |  |  | 21 |  |  | 3.4 Yrs |  | $ | 11,730 |
Exercisable at End of Year | 3,003 |  |  | $ | 19 |  |  | 2.2 Yrs |  | $ | 7,617 |
| 2011
| Shares (000) |  | Wtd. Avg. Ex. Price |  | Wtd. Avg. Remaining Contract Life |  | Aggregate Intrinsic Value (000)
Outstanding at Beginning of Year | 6,805 |  |  | $ | 17 |  |  |  |  |
Granted | 2,462 |  |  | 29 |  |  |  |  |
Exercised | (1,497 | ) |  | 16 |  |  |  |  | $ | 20,659 |
Forfeited | (215 | ) |  | 19 |  |  |  |  |
Outstanding at End of Year | 7,555 |  |  | 21 |  |  | 3.5 Yrs |  | $ | 66,295 |
Exercisable at End of Year | 2,024 |  |  | $ | 17 |  |  | 2.3 Yrs |  | $ | 26,218 |
| 2010
| Shares (000) |  | Wtd. Avg. Ex. Price |  | Wtd. Avg. Remaining Contract Life |  | Aggregate Intrinsic Value (000)
Outstanding at Beginning of Year | 8,419 |  |  | $ | 16 |  |  |  |  |
Granted | 2,197 |  |  | 21 |  |  |  |  |
Exercised | (3,564 | ) |  | 17 |  |  |  |  | $ | 20,706 |
Forfeited | (247 | ) |  | 16 |  |  |  |  |
Outstanding at End of Year | 6,805 |  |  | 17 |  |  | 3.5 Yrs |  | $ | 85,374 |
Exercisable at End of Year | 1,767 |  |  | $ | 16 |  |  | 2.3 Yrs |  | $ | 23,810 |
A summary of the status of the Company’s non-vested employee stock option activity for the years ended December 31, 2012, 2011, and 2010, are presented in the table and narrative below:
| 2012 |  | 2011 |  | 2010
| Shares (000) |  | Wtd. Avg Grant Date Fair Value |  | Shares (000) |  | Wtd. Avg Grant Date Fair Value |  | Shares (000) |  | Wtd. Avg Grant Date Fair Value
Nonvested stock options at Beginning of Year | 5,530 |  |  | $ | 6 |  |  | 5,038 |  |  | $ | 5 |  |  | 4,662 |  |  | $ | 4 |
Granted | 2,641 |  |  | 6 |  |  | 2,462 |  |  | 8 |  |  | 2,197 |  |  | 6 |
Vested | (1,936 | ) |  | 5 |  |  | (1,766 | ) |  | 5 |  |  | (1,642 | ) |  | 4 |
Forfeited | (377 | ) |  | 6 |  |  | (204 | ) |  | 5 |  |  | (179 | ) |  | 4 |
Nonvested stock options at End of Year | 5,858 |  |  | $ | 6 |  |  | 5,530 |  |  | $ | 6 |  |  | 5,038 |  |  | $ | 5 |
Non-employee Director Stock Option Plan In 2012, an Amended and Restated Non-employee Director Stock Option Plan, covering a total of 500,000 shares of common stock, was approved by shareholders replacing a prior plan.The Company has granted options on 42,000 shares (net of shares from canceled options) under the new director plan and 549,240 shares (net of shares from canceled options) under a prior plan through December 31, 2012. Under the shareholder approved plans, the option exercise price equals the stock's market price on date of grant. The options vest after six months, and expire after ten years. The fair value of each option grant in the Non-employee Director Stock Option Plans was estimated on the date of grant using the Black-Scholes option pricing model with the following weighted-average assumptions for the indicated periods:
| 2012 |  | 2011 |  | 2010
Dividend yield (1) | 2.6 | % |  | 2.7 | % |  | 2.7 | %
Expected volatility (2) | 44.5 | % |  | 40.5 | % |  | 40.8 | %
Risk-free interest rate (3) | 1.7 | % |  | 3.2 | % |  | 3.5 | %
Expected term of options (in years) (4) | 6.8 |  |  | 6.5 |  |  | 8.1 |
Weighted-average grant-date fair value | $ | 8 |  |  | $ | 11 |  |  | $ | 8 |
(1) Represents the Company's estimated cash dividend yield over the expected term of option grant.
(2) | Amount is determined based on analysis of historical price volatility of the Company's common stock. The expected volatility is based on the daily percentage change in the price of the stock over a period equal to the expected term of the option grant.
(3) Represents the U.S. Treasury yield over the expected term of the option grant.
(4) | Represents the period of time that options granted are expected to be outstanding. Based on analysis of historical option exercise activity, the Company has determined that non-employee directors exhibit similar exercise and post-vesting termination behavior.
As of December 31, 2012, there was no unrecognized compensation cost related to share-based payments under this plan. A summary of the status of the Company’s Non-employee Director Stock Option Plan at December 31, 2012, 2011, and 2010, and changes during the same periods are presented in the tables and narrative below:
| 2012
| Shares (000) |  | Wtd. Avg. Ex. Price |  | Wtd. Avg. Remaining Contract Life |  | Aggregate Intrinsic Value (000)
Outstanding at Beginning of Year | 192 |  |  | $ | 21 |  |  |  |  |
Granted | 42 |  |  | 22 |  |  |  |  |
Exercised | — |  |  | — |  |  |  |  |  |
Forfeited | — |  |  | — |  |  |  |  |
Outstanding at End of Year | 234 |  |  | 21 |  |  | 6.4 Yrs |  | $ | 225 |
Exercisable at End of Year | 234 |  |  | $ | 21 |  |  | 6.4 Yrs |  | $ | 225 |
| 2011
| Shares (000) |  | Wtd. Avg. Ex. Price |  | Wtd. Avg. Remaining Contract Life |  | Aggregate Intrinsic Value (000)
Outstanding at Beginning of Year | 244 |  |  | $ | 18 |  |  |  |  |
Granted | 42 |  |  | 32 |  |  |  |  |
Exercised | (94 | ) |  | 17 |  |  |  |  | $ | 1,362 |
Forfeited | — |  |  | — |  |  |  |  |
Outstanding at End of Year | 192 |  |  | 21 |  |  | 6.8 Yrs |  | $ | 1,740 |
Exercisable at End of Year | 192 |  |  | $ | 21 |  |  | 6.8 Yrs |  | $ | 1,740 |
| 2010
| Shares (000) |  | Wtd. Avg. Ex. Price |  | Wtd. Avg. Remaining Contract Life |  | Aggregate Intrinsic Value (000)
Outstanding at Beginning of Year | 429 |  |  | $ | 16 |  |  |  |  |
Granted | 48 |  |  | 21 |  |  |  |  |
Exercised | (233 | ) |  | 16 |  |  |  |  | $ | 1,932 |
Forfeited | — |  |  | — |  |  |  |  |
Outstanding at End of Year | 244 |  |  | 18 |  |  | 6.1 | Yrs |  | $ | 2,937 |
Exercisable at End of Year | 244 |  |  | $ | 18 |  |  | 6.1 | Yrs |  | $ | 2,937 |
A summary of the status of the Company’s non-vested Non-employee Director Stock Option Plan activity for the years ended December 31, 2012, 2011, and 2010, are presented in the table and narrative below:
| 2012 |  | 2011 |  | 2010
| Shares (000) |  | Wtd. Avg Grant Date Fair Value |  | Shares (000) |  | Wtd. Avg Grant Date Fair Value |  | Shares (000) |  | Wtd. Avg Grant Date Fair Value
Nonvested stock options at Beginning of Year | — |  |  | $ | — |  |  | — |  |  | $ | — |  |  | — |  |  | $ | — |
Granted | 42 |  |  | 8 |  |  | 42 |  |  | 11 |  |  | 48 |  |  | 8 |
Vested | (42 | ) |  | 8 |  |  | (42 | ) |  | 11 |  |  | (48 | ) |  | 8 |
Forfeited | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Nonvested stock options at End of Year | — |  |  | $ | — |  |  | — |  |  | $ | — |  |  | — |  |  | $ | — |
Employee Stock Purchase Plan In 2003, a new Employee Stock Purchase Plan covering 1,200,000 shares was approved by the shareholders, replacing a prior plan. The Company has sold to employees 102,498 shares, 68,630 shares and 81,249 shares under the new plan in 2012, 2011, and 2010, respectively, and has sold a total of 1,067,426 shares under the plan through December 31, 2012. The Company sells shares at 85% of the stock’s market price at date of purchase. The weighted average fair value of shares sold in 2012 was approximately $17.19. Restricted Stock Plan In 2008, an amendment to the Company’s Second Restricted Stock Plan was approved by shareholders. The Plan amendment increased the maximum number of shares that may be subject to awards to 2,000,000 shares and to extend the Plan’s termination date to February 21, 2018. The purpose of this plan is to permit grants of shares, subject to restrictions, to key employees of the Company as a means of retaining and rewarding them for long-term performance and to increase their ownership in the Company. Shares awarded under the plan entitle the shareholder to all rights of common stock ownership except that the shares may not be sold, transferred, pledged, exchanged or otherwise disposed of during the restriction period. The restriction period is determined by a committee, appointed by the Board of Directors, but may not exceed ten years. The Company has 694,770 shares outstanding under the plan as of December 31, 2012. During 2012, 2011, and 2010, 225,730, 140,900 and 117,050 shares, respectively, were granted with a restriction period of five years at market prices ranging from $17.27 to $24.45 in 2012, $24.96 to $30.25 in 2011, and $17.98 to $29.46 in 2010, and has unearned stock-based compensation of $8,601,582 associated with these restricted stock grants. The unearned stock-based compensation related to these grants is being amortized to compensation expense over the applicable restriction periods. Amortization expense of restricted stock for 2012 was $2,108,583.

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- Definition The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 50 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6406099&loc=d3e25284-112666 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 93-6 -Paragraph 53 -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 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6418621&loc=d3e17540-113929 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph 64, 65, A240 -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 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5444-113901 + Details
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