Capital Stock	6 Months Ended
Jun. 30, 2014
Equity [Abstract]
Common Stock	Capital Stock The Company had 20,269,171 shares of Class A common stock and 23,985,841 shares of Class B common stock outstanding as of June 30, 2014. The Company had 19,868,018 shares of Class A common stock and 24,287,045 shares of Class B common stock outstanding as of December 31, 2013. During the six months ended June 30, 2014, the Company repurchased and retired 325,418 shares of its Class A common stock in a combination of open market and privately negotiated transactions at an aggregate purchase price of $8,143. The repurchases were made pursuant to a stock repurchase program approved by the Company's Board of Directors in November 2013. Under the terms of the stock repurchase program, the Company may repurchase up to an additional 1,674,582 shares of its Class A common stock prior to expiration of the plan on November 25, 2014. All other stock repurchases during the three and six months ended June 30, 2014 and 2013 were redemptions of vested restricted shares tendered in lieu of cash for payment of income tax withholding amounts by participants of the Company's 2006 Equity Compensation Plan. On January 24, 2014, the Company filed a Registration Statement on Form S-8 to register an additional 1,500,000 shares of Class A common stock to be issued pursuant to the Company's 2006 Equity Compensation Plan, as amended and restated.

Capital Stock

6 Months Ended

Jun. 30, 2014

Capital Stock

The Company had 20,269,171 shares of Class A common stock and 23,985,841 shares of Class B common stock outstanding as of June 30, 2014. The Company had 19,868,018 shares of Class A common stock and 24,287,045 shares of Class B common stock outstanding as of December 31, 2013.

During the six months ended June 30, 2014, the Company repurchased and retired 325,418 shares of its Class A common stock in a combination of open market and privately negotiated transactions at an aggregate purchase price of $8,143. The repurchases were made pursuant to a stock repurchase program approved by the Company's Board of Directors in November 2013. Under the terms of the stock repurchase program, the Company may repurchase up to an additional 1,674,582 shares of its Class A common stock prior to expiration of the plan on November 25, 2014. All other stock repurchases during the three and six months ended June 30, 2014 and 2013 were redemptions of vested restricted shares tendered in lieu of cash for payment of income tax withholding amounts by participants of the Company's 2006 Equity Compensation Plan.

On January 24, 2014, the Company filed a Registration Statement on Form S-8 to register an additional 1,500,000 shares of Class A common stock to be issued pursuant to the Company's 2006 Equity Compensation Plan, as amended and restated.