Special Charges	3 Months Ended
Mar. 31, 2012
Restructuring and Related Activities [Abstract]
Special Charges	Special Charges Secondary Offering Costs The Company incurred $1.0 million in costs related to the secondary offering, of which $0.2 million were incurred in the first quarter of 2012, offset by reimbursements of $0.3 million pursuant to the Fourth Amendment to the Second Amended and Restated Investor Rights Agreement. The Company did not receive any proceeds from the sale of shares in the secondary offering. Accordingly, special charges in the Company's Statement of Operations for the three months ended March 31, 2012 were $(0.1) million. Restructuring Costs In 2010, the Company relocated all of its Detroit, Michigan maintenance operations to Fort Lauderdale, Florida. The restructuring included the closure of facilities in Detroit, relocation of equipment and tools, and the relocation and reduction of workforce. The Company determined the relocation of these facilities and the planned relocation and reduction of certain employees met the requirement of an exit activity. Costs of $0.1 million for the three months ended March 31, 2011 are included within special charges in the Company's Statement of Operations.

Special Charges

3 Months Ended

Mar. 31, 2012

Restructuring and Related Activities [Abstract]

Secondary Offering Costs

The Company incurred $1.0 million in costs related to the secondary offering, of which $0.2 million were incurred in the first quarter of 2012, offset by reimbursements of $0.3 million pursuant to the Fourth Amendment to the Second Amended and Restated Investor Rights Agreement.

The Company did not receive any proceeds from the sale of shares in the secondary offering. Accordingly, special charges in the Company's Statement of Operations for the three months ended March 31, 2012 were $(0.1) million.

Restructuring Costs

In 2010, the Company relocated all of its Detroit, Michigan maintenance operations to Fort Lauderdale, Florida. The restructuring included the closure of facilities in Detroit, relocation of equipment and tools, and the relocation and reduction of workforce. The Company determined the relocation of these facilities and the planned relocation and reduction of certain employees met the requirement of an exit activity. Costs of $0.1 million for the three months ended March 31, 2011 are included within special charges in the Company's Statement of Operations.