Investment in Affiliate	9 Months Ended
Sep. 30, 2011
Investment In Affiliate [Abstract]
Investment in Affiliate	Note 5 —Investment in Affiliate The Company believes that its 14.9% voting interest in CEP along with the right to appoint two directors to CEP’s Board provide it the ability to exercise significant influence over the operating and financial policies of CEP. Rather than accounting for the investment under the equity method, the Company elected the fair value option to account for its interest in CEP at the acquisition date on August 8, 2011. The fair value option was chosen as the Company determined that the market price of CEP’s publicly traded interests provided a more accurate fair value measure of the Company’s investment in CEP. As a result of the decline in the market price of CEP’s traded interests, the Company recorded a loss of $0.9 million during the three month and nine month periods ending September 30, 2011. The loss was recorded as a component of other income (expense) in the condensed consolidated statement of operations.

Note 5 —Investment in Affiliate

The Company believes that its 14.9% voting interest in CEP along with the right to appoint two directors to CEP’s Board provide it the ability to exercise significant influence over the operating and financial policies of CEP. Rather than accounting for the investment under the equity method, the Company elected the fair value option to account for its interest in CEP at the acquisition date on August 8, 2011. The fair value option was chosen as the Company determined that the market price of CEP’s publicly traded interests provided a more accurate fair value measure of the Company’s investment in CEP. As a result of the decline in the market price of CEP’s traded interests, the Company recorded a loss of $0.9 million during the three month and nine month periods ending September 30, 2011. The loss was recorded as a component of other income (expense) in the condensed consolidated statement of operations.