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Share-Based Compensation | 3 Months Ended
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Mar. 31, 2013
Share-Based Compensation |
Share-Based Compensation | Note C — Share-Based Compensation The fair value of stock options granted by the Company has been estimated as of the grant date using the Black-Scholes option pricing model. During the three months ended March 31, 2013, the Company granted options to purchase 173,558 shares of common stock under the SkyWest, Inc. 2010 Long-Term Incentive Plan (the “2010 Incentive Plan”). The following table shows the assumptions used and weighted average fair value for stock option grants during the three months ended March 31, 2013.
Expected annual dividend rate |  | 1.21 | %
Risk-free interest rate |  | 0.92 | %
Average expected life (years) |  | 6.0 |
Expected volatility of common stock |  | 0.446 |
Forfeiture rate |  | 0.0 | %
Weighted average fair value of option grants |  | $ | 5.04 |
During the three months ended March 31, 2013, the Company granted 284,026 restricted stock units to the Company’s employees under the 2010 Incentive Plan. The restricted stock units have a three-year vesting period, during which the recipient must remain employed with the Company or one of the Company’s subsidiaries. Upon vesting, a restricted stock unit will be replaced with a common share of stock. Additionally, during the three months ended March 31, 2013, the Company granted 27,492 fully-vested shares of common stock to the Company’s directors. The weighted average fair value of the shares of restricted stock on the date of grant was $13.24 per share. The Company records share-based compensation expense only for those options and restricted stock units that are expected to vest. The estimated fair value of the stock options and restricted stock units is amortized over the applicable vesting periods. During the three months ended March 31, 2013 and 2012, the Company recorded pre-tax share-based compensation expense of $1.3 million and $1.3 million, respectively.

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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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