Included in the operating and net loss for the fourth quarter and full year of 2012 was an increase in multiemployer pension withdrawal expense of $31.7 million and $29.6 million for the fourth quarter and full year, respectively, related to the company's decision to completely withdraw from its remaining multiemployer pension plan within the United States in part to mitigate potentially greater financial exposure to the company in the future under the significantly underfunded plan. The company presently expects to pay approximately $41.2 million to satisfy its withdrawal liability, which will consist of annual cash payments of approximately $2.1 million over a 20-year period, with the annual cash payments expected to commence on or about May 1, 2014.