(9)       Stockholders' Equity

Common Stock

GCI's Class A and Class B common stock are identical in all respects, except that each share of Class A common stock has one vote per share and each share of Class B common stock has ten votes per share. Each share of Class B common stock outstanding is convertible, at the option of the holder, into one share of Class A common stock.

During the years ended December 31, 2012, 2011 and 2010, we repurchased 1.5 million, 5.2 million and 8.0 million shares, respectively, of our Class A common stock at a cost of $14.0 million, $52.6 million and $80.8 million, respectively, pursuant to the Class A and Class B common stock repurchase program authorized by GCI's Board of Directors. During the years ended December 31, 2012, 2011 and 2010, we retired 1.8 million, 5.2 million and 8.0 million shares, respectively, of our Class A common stock.

Shared-Based Compensation

Our Amended and Restated 1986 Stock Option Plan ("Stock Option Plan"), provides for the grant of options and restricted stock awards (collectively "award") for a maximum of 15.7 million shares of GCI Class A common stock, subject to adjustment upon the occurrence of stock dividends, stock splits, mergers, consolidations or certain other changes in corporate structure or capitalization. If an award expires or terminates, the shares subject to the award will be available for further grants of awards under the Stock Option Plan. The Compensation Committee of GCI's Board of Directors administers the Stock Option Plan. Substantially all restricted stock awards granted vest over periods of up to three years. Substantially all options vest in equal installments over a period of five years and expire ten years from the date of grant. The requisite service period of our awards is generally the same as the vesting period. Options granted pursuant to the Stock Option Plan are only exercisable if at the time of exercise the option holder is our employee, non-employee director, or a consultant or advisor working on our behalf. New shares are issued when stock option agreements are exercised or restricted stock awards are granted. We have 3.7 million shares available for grant under the Stock Option Plan at December 31, 2012.

The fair value of restricted stock awards is determined based on the number of shares granted and the quoted price of our common stock. We use a Black-Scholes-Merton option pricing model to estimate the fair value of stock options issued. The Black-Scholes-Merton option pricing model incorporates various and highly subjective assumptions, including expected term and expected volatility. We have reviewed our historical pattern of option exercises and have determined that meaningful differences in option exercise activity existed among employee job categories. Therefore, we have categorized these awards into two groups of employees for valuation purposes.

We estimated the expected term of options granted by evaluating the vesting period of stock options, employee's past exercise and post-vesting employment departure behavior, and expected volatility of the price of the underlying shares.

We estimated the expected volatility of our common stock at the grant date using the historical volatility of our common stock over the most recent period equal to the expected stock option term and evaluated the extent to which available information indicated that future volatility may differ from historical volatility.

The risk-free interest rate assumption was determined using the Federal Reserve nominal rates for U.S. Treasury zero-coupon bonds with maturities similar to those of the expected term of the award being valued. We have never paid any cash dividends on our common stock and we do not anticipate paying any cash dividends in the foreseeable future. Therefore, we assumed an expected dividend yield of zero.

No options were granted during the years ended December 31, 2012 and 2011. The following table shows our assumptions used to compute the share-based compensation expense for stock options granted during the year ended December 31, 2010:

We estimate pre-vesting option forfeitures at the time of grant and periodically revise those estimates in subsequent periods if actual forfeitures differ from those estimates. We record share-based compensation expense only for those awards expected to vest using an estimated forfeiture rate based on our historical pre-vesting forfeiture data. We review our forfeiture estimates annually and adjust our share-based compensation expense in the period our estimate changes.

A summary of option activity under the Stock Option Plan as of December 31, 2012 and changes during the year then ended is presented below:

The weighted average grant date fair value of options granted during the year ended December 31, 2010 was $2.84 per share. There were no options granted during the years ended December 31, 2012 and 2011. The total fair value of options vesting during the years ended December 31, 2012, 2011 and 2010, was $560,000, $379,000 and $377,000, respectively. The total intrinsic values, determined as of the date of exercise, of options exercised in the years ended December 31, 2012, 2011 and 2010, were $1.3 million, $287,000 and $511,000, respectively. We received $2.1 million, $947,000 and $659,000 in cash from stock option exercises in the years ended December 31, 2012, 2011 and 2010, respectively.

A summary of nonvested restricted stock award activity under the Stock Option Plan for the year ended December 31, 2012, follows (share amounts in thousands):

The following is a summary of our share-based compensation expense for the years ended December 31, 2012, 2011 and 2010 (amounts in thousands):

Share-based compensation expense is classified as Selling, General and Administrative Expense in our Consolidated Income Statements. Unrecognized share-based compensation expense was $6.4 million relating to 1.1 million restricted stock awards and $111,000 relating to 43,000 unvested stock options as of December 31, 2012. We expect to recognize share-based compensation expense over a weighted average period of 1.4 years for stock options and 2.2 years for restricted stock awards.

On August 6, 2009, we filed a Tender Offer Statement on Schedule TO (“Exchange Offer”) with the SEC. The Exchange Offer was an offer by us to eligible officers, employees and stakeholders, other than officers of GCI who also serve on GCI's Board of Directors (“Participants”) to exchange, on a grant-by-grant basis, their outstanding eligible stock options that were granted under our Stock Option Plan, whether vested or unvested, for shares of restricted stock of GCI Class A common stock that we granted under the Stock Option Plan (“Restricted Stock”). We issued 1,908,890 shares of Restricted Stock to Participants in accordance with the terms of the Exchange Offer.

In accordance with the terms of the Restricted Stock agreement, one-half of the Restricted Stock received in exchange for eligible options vested on December 20, 2011, and the remainder vested on February 28, 2012.

Employee Stock Purchase Plan

In 1986, we adopted an Employee Stock Purchase Plan (“GCI 401(k) Plan”) qualified under Section 401 of the Internal Revenue Code of 1986. The GCI 401(k) Plan provides for acquisition of GCI's Class A common stock at market value as well as various mutual funds. The GCI 401(k) Plan permits each employee who has completed one year of service to elect to participate. Eligible employees could elect to reduce their compensation by up to 50 percent of such compensation (subject to certain limitations) up to a maximum of $17,000, $16,500 and $16,500 during the years ended December 31, 2012, 2011 and 2010, respectively. Contributions may be made on either a pretax or Roth basis.

Eligible employees were allowed to make catch-up contributions of no more than $5,500 during the year ended December 31, 2012 and will be able to make such contributions limited to $5,500 during the year ending December 31, 2013. We do not match employee catch-up contributions.

We may match up to 100% of employee salary reductions in any amount, decided by GCI's Board of Directors each year, but not more than 10 percent of any one employee's compensation will be matched in any year. Matching contributions vest over the initial six years of employment. For the year ended December 31, 2012, the combination of employee and matching contributions (pre-tax contributions and Roth basis) could not exceed the lesser of 100 percent of an employee's compensation or $34,000 excluding catch-up contributions. For the years ended December 31, 2011 and 2010, the combination of employee and matching contributions (pre-tax contributions and Roth basis) could not exceed the lesser of 100 percent of an employee's compensation or $33,000 excluding catch-up contributions.

Employee contributions receive up to 100% matching and employees self-direct their matching investment. Our matching contributions allocated to participant accounts totaled $7.5 million, $7.1 million and $6.9 million for the years ended December 31, 2012, 2011 and 2010, respectively. We used cash to fund all of our employer-matching contributions during the years ended December 31, 2012, 2011 and 2010.