Discontinued Operations

12 Months Ended

Dec. 31, 2011

Discontinued Operations [Abstract]

Discontinued Operations

(14)   Discontinued Operations

In September 2011, our environmental segment sold CETCO Contracting Services Company, which comprised our domestic contracting services business. The operations of this business for current and prior years, including the immaterial loss recorded on the sale, have been reclassified and are recorded net of income tax within Income (loss) on discontinued operations within our Consolidated Statement of Operations.