Preferred Stock	6 Months Ended
Jun. 30, 2011
Preferred Stock [Abstract]
Preferred Stock	5. Preferred Stock As of June 30, 2011 and December 31, 2010, we had 393 shares of Series D Perpetual Preferred Stock outstanding. The Series D Perpetual Preferred Stock has a liquidation value of $100,000 per share, for a total liquidation value of $39.3 million as of June 30, 2011 and December 31, 2010 and a recorded value of $37.4 million and $37.2 million as of June 30, 2011 and December 31, 2010, respectively. The difference between the liquidation values and the recorded values was the unaccreted portion of the original issuance discount and issuance cost. Our accrued Series D Perpetual Preferred Stock dividend balances as of June 30, 2011 and December 31, 2010 were $17.5 million and $14.1 million, respectively. On April 29, 2010, we completed the redemption of approximately $60.7 million in face amount of our Series D Perpetual Preferred Stock, and paid $14.9 million in accrued dividends related thereto, in exchange for $50.0 million in cash, using proceeds from the offering of Notes and the issuance 8.5 million shares of our common stock. Except for the dividend payment on April 29, 2010 in connection with the redemption of a portion of the Series D Perpetual Preferred Stock, we have deferred the cash payment of dividends on our Series D Perpetual Preferred Stock since October 1, 2008. When three consecutive cash dividend payments with respect to the Series D Perpetual Preferred Stock remain unfunded, the dividend rate increases from 15.0% per annum to 17.0% per annum. Thus, our Series D Perpetual Preferred Stock dividend began accruing at 17.0% per annum on July 16, 2009 and will accrue at that rate as long as at least three consecutive cash dividend payments remain unfunded. While any Series D Perpetual Preferred Stock dividend payments are in arrears, we are prohibited from repurchasing, declaring and/or paying any cash dividend with respect to any equity securities having liquidation preferences equivalent to or junior in ranking to the liquidation preferences of the Series D Perpetual Preferred Stock, including our common stock and Class A common stock. We can provide no assurances as to when any future cash payments will be made on any accumulated and unpaid Series D Perpetual Preferred Stock dividends presently in arrears or that become in arrears in the future.

5. Preferred Stock

As of June 30, 2011 and December 31, 2010, we had 393 shares of Series D Perpetual Preferred Stock outstanding. The Series D Perpetual Preferred Stock has a liquidation value of $100,000 per share, for a total liquidation value of $39.3 million as of June 30, 2011 and December 31, 2010 and a recorded value of $37.4 million and $37.2 million as of June 30, 2011 and December 31, 2010, respectively. The difference between the liquidation values and the recorded values was the unaccreted portion of the original issuance discount and issuance cost. Our accrued Series D Perpetual Preferred Stock dividend balances as of June 30, 2011 and December 31, 2010 were $17.5 million and $14.1 million, respectively.

On April 29, 2010, we completed the redemption of approximately $60.7 million in face amount of our Series D Perpetual Preferred Stock, and paid $14.9 million in accrued dividends related thereto, in exchange for $50.0 million in cash, using proceeds from the offering of Notes and the issuance 8.5 million shares of our common stock.

Except for the dividend payment on April 29, 2010 in connection with the redemption of a portion of the Series D Perpetual Preferred Stock, we have deferred the cash payment of dividends on our Series D Perpetual Preferred Stock since October 1, 2008. When three consecutive cash dividend payments with respect to the Series D Perpetual Preferred Stock remain unfunded, the dividend rate increases from 15.0% per annum to 17.0% per annum. Thus, our Series D Perpetual Preferred Stock dividend began accruing at 17.0% per annum on July 16, 2009 and will accrue at that rate as long as at least three consecutive cash dividend payments remain unfunded.

While any Series D Perpetual Preferred Stock dividend payments are in arrears, we are prohibited from repurchasing, declaring and/or paying any cash dividend with respect to any equity securities having liquidation preferences equivalent to or junior in ranking to the liquidation preferences of the Series D Perpetual Preferred Stock, including our common stock and Class A common stock. We can provide no assurances as to when any future cash payments will be made on any accumulated and unpaid Series D Perpetual Preferred Stock dividends presently in arrears or that become in arrears in the future.