Notes Receivable

9 Months Ended

Sep. 30, 2011

Notes Receivable [Abstract]

Notes Receivable

(12) Notes Receivable

Notes receivable consists of a commitment from the seller of certain assets to pay the Company upon the decommissioning of the Bullwinkle platform. These notes are recorded at present value, and the related discount is amortized to interest income based on the expected timing of the platform’s removal. The Company recorded interest income of approximately $3.4 million and $3.5 million for the nine months ended September 30, 2011 and 2010, respectively.