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Stock Based Compensation
6 Months Ended
Jun. 30, 2011
Stock Based Compensation [Abstract]  
Stock Based Compensation
7. Stock Based Compensation
     During the three months ended June 30, 2011, the Company granted 23,000 shares of time-vesting restricted Class A common stock, with an aggregate fair value on the date of grant of $0.1 million, or $4.43 per share, to the non-employee directors of the Company.
     During the first quarter of 2011, the Company granted Mr. L. Dickey 160,000 shares of performance-based vesting restricted Class A common stock and 160,000 shares of time-vesting restricted Class A common stock. The fair value on the date of grant of both of these awards was $1.6 million, or $4.87 per share. In addition, also during the first quarter of 2011, the Company granted 170,000 shares of time-vesting Class A common stock, with an aggregate fair value on the date of grant of $0.8 million, or $4.87 per share, to certain officers (other than Mr. L. Dickey) of the Company.
     For the three and six months ended June 30, 2011, the Company recognized approximately $0.6 million and $1.2 million, respectively in non-cash stock based compensation expense.