Spokane, Washington. /Reuters/. Potlatch Corp. said on Thursday its third-quarter loss widened as soft demand and prices for lumber and some wood products cut into its results. The company, based in Spokane, Washington, posted a loss from continuing operations of $10.4 million, or 36 cents a share, compared with a loss of $2.3 million, or 8 cents a share, a year earlier. Continuing operations does not include results from one of its mills or from the printing papers unit, assets of which were sold in May. Including discontinued operations, the company posted a net loss of $12.4 million, or 43 cents a share. Beyond weak fundamentals in the market, the company was hurt by a 23 day strike this summer at its lumber mill in Warren, Arkansas. The strike has since ended. Company shares closed Thursday up 87 cents at $28.56 on the New York Stock Exchange before the release of its earnings report.