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Sale Of Business
 9 Months Ended
Sep. 30, 2011
Sale Of Business [Abstract]  
Sale Of Business
12. Sale of Business

On April 1, 2011, the Company sold its interest in NWPA for $0.8 million to the controlling owners of the business. The full amount has been received by the Company at September 30, 2011.

On June 1, 2011, the Company sold all assets of the traffic systems product line of the Tubular Products facility in Houston, Texas. Assets sold as part of this sale included the (i) raw materials, work-in-process, finished goods and related fuel and supplies inventories, (ii) tangible personal property located at the Houston facilities or used by the Company in connection with the traffic business, including machinery, equipment, tooling, operating and maintenance manuals, parts and all other tangible assets used in or related to the traffic business, (iii) receivables, and (iv) other assets. Total consideration of $13.7 million was received, resulting in a gain of $2.9 million recognized in other expense (income) during the second quarter of 2011. The calculation of the gain on sale included a write-off of $1.0 million of goodwill.