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Stock-Based Compensation | 3 Months Ended
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Mar. 31, 2013
Stock-Based Compensation [Abstract] |
STOCK-BASED COMPENSATION | (6) STOCK-BASED COMPENSATION The Company adopted a nonqualified incentive stock option plan (the “BancFirst ISOP”) in May 1986. The Company amended the BancFirst ISOP to increase the number of shares to be issued under the plan to 2,800,000 shares in May 2011. At March 31, 2013, 15,860 shares were available for future grants. The BancFirst ISOP will terminate on December 31, 2014. The options are exercisable beginning four years from the date of grant at the rate of 25% per year for four years. Options expire at the end of fifteen years from the date of grant. Options outstanding as of March 31, 2013 will become exercisable through the year 2019. The option price must be no less than 100% of the fair value of the stock relating to such option at the date of grant. In June 1999, the Company adopted the BancFirst Corporation Non-Employee Directors’ Stock Option Plan (the “BancFirst Directors’ Stock Option Plan”). Each non-employee director is granted an option for 10,000 shares. The Company amended the BancFirst Directors’ Stock Option Plan to increase the number of shares to be issued under the plan to 205,000 shares in May 2009. At March 31, 2013, 30,000 shares were available for future grants. The options are exercisable beginning one year from the date of grant at the rate of 25% per year for four years, and expire at the end of fifteen years from the date of grant. Options outstanding as of March 31, 2013 will become exercisable through the year 2015. The option price must be no less than 100% of the fair value of the stock relating to such option at the date of grant. The Company currently uses newly issued stock to satisfy stock-based exercises, but reserves the right to use treasury stock purchased under the Company’s Stock Repurchase Program (the “SRP”) in the future. The following table is a summary of the activity under both the BancFirst ISOP and the BancFirst Directors’ Stock Option Plan:
|  | Options |  |  | Wgtd. Avg. Exercise Price |  |  | Wgtd. Avg. Remaining Contractual Term |  |  | Aggregate Intrinsic Value |
|  | (Dollars in thousands, except per share data) |
Three Months Ended March 31, 2013 |  |  |  |
Outstanding at December 31, 2012 |  |  | 1,216,981 |  |  | $ | 31.98 |  |  |  |  |  |  |  |  |
Options granted |  |  | — |  |  |  | — |  |  |  |  |  |  |  |  |
Options exercised |  |  | (8,250 | ) |  |  | 17.22 |  |  |  |  |  |  |  |  |
Options cancelled, forfeited or expired |  |  | — |  |  |  | — |  |  |  |  |  |  |  |  |
Outstanding at March 31, 2013 |  |  | 1,208,731 |  |  |  | 32.08 |  |  |  | 8.43 | Yrs |  | $ | 11,632 |
Exercisable at March 31, 2013 |  |  | 626,031 |  |  |  | 26.20 |  |  |  | 5.01 | Yrs |  | $ | 9,703 |
The following table has additional information regarding options granted and options exercised under both the BancFirst ISOP and the BancFirst Directors’ Stock Option Plan:
|  | Three Months Ended March 31, |
|  | 2013 |  |  | 2012 |
|  | (Dollars in thousands) |
Total intrinsic value of options exercised |  | $ | 348 |  |  | $ | 1,132 |
Cash received from options exercised |  |  | 142 |  |  |  | 483 |
Tax benefit realized from options exercised |  |  | 135 |  |  |  | 438 |
The fair value of each option grant is estimated on the date of grant using the Black-Scholes option-pricing model and is based on certain assumptions including risk-free rate of return, dividend yield, stock price volatility, and the expected term. The fair value of each option is expensed over its vesting period. The following table is a summary of the Company’s recorded stock-based compensation expense:
|  | Three Months Ended March 31, |
|  | 2013 |  |  | 2012 |
|  | (Dollars in thousands) |
Stock-based compensation expense |  | $ | 374 |  |  | $ | 441 |
Tax |  |  | 145 |  |  |  | 171 |
Stock-based compensation expense, net of tax |  | $ | 229 |  |  | $ | 270 |
The Company will continue to amortize the remaining fair value of stock options over the remaining vesting period of approximately seven years. The following table shows the remaining fair value of stock options:
|  | March 31, 2013 |
|  | (Dollars in thousands) |
Fair value of stock options |  | $ | 5,103 |
The following table shows the assumptions used for computing stock-based compensation expense under the fair value method:
|  | Three Months Ended March 31, |
|  | 2013 |  |  | 2012 |
Risk-free interest rate |  |  | 1.95 | % |  |  | 1.95 | %
Dividend yield |  |  | 2.00 | % |  |  | 2.00 | %
Stock price volatility |  |  | 20.21 | % |  |  | 38.75 | %
Expected term |  |  | 10 | Yrs |  |  | 10 | Yrs
The risk-free interest rate is determined by reference to the spot zero-coupon rate for the U.S. Treasury security with a maturity similar to the expected term of the options. The dividend yield is the expected yield for the expected term. The stock price volatility is estimated from the recent historical volatility of the Company’s stock. The expected term is estimated from the historical option exercise experience.

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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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