Special Charges and Credits	9 Months Ended
Sep. 30, 2013
Restructuring and Related Activities [Abstract]
Special Charges and Credits	Special Charges and Credits Secondary Offering Costs Special charges and credits for the nine months ended September 30, 2013 primarily include costs related to an underwritten public offering of 12,070,920 shares of common stock by certain stockholders affiliated with Indigo Partners LLC (Indigo) completed during the third quarter of 2013. The Company incurred a total of $0.4 million in costs related to this offering. The Company did not receive any proceeds from this offering. On January 25, 2012, certain stockholders of the Company, including affiliates of Oaktree Capital Management and Indigo and certain members of the Company's executive team, sold an aggregate of 12,650,000 shares of common stock in an underwritten public offering. The Company incurred a total of $1.3 million in costs between 2011 and 2012 related to this offering, of which $0.5 million were incurred during the nine months ended September 30, 2012. These costs were offset by reimbursements from certain selling shareholders of $0.6 million in accordance with the Fourth Amendment to the Second Amended and Restated Investor Rights Agreement. The Company did not receive any proceeds from this offering.

Special Charges and Credits

Secondary Offering Costs

Special charges and credits for the nine months ended September 30, 2013 primarily include costs related to an underwritten public offering of 12,070,920 shares of common stock by certain stockholders affiliated with Indigo Partners LLC (Indigo) completed during the third quarter of 2013. The Company incurred a total of $0.4 million in costs related to this offering. The Company did not receive any proceeds from this offering.

On January 25, 2012, certain stockholders of the Company, including affiliates of Oaktree Capital Management and Indigo and certain members of the Company's executive team, sold an aggregate of 12,650,000 shares of common stock in an underwritten public offering. The Company incurred a total of $1.3 million in costs between 2011 and 2012 related to this offering, of which $0.5 million were incurred during the nine months ended September 30, 2012. These costs were offset by reimbursements from certain selling shareholders of $0.6 million in accordance with the Fourth Amendment to the Second Amended and Restated Investor Rights Agreement. The Company did not receive any proceeds from this offering.