Potlatch Corporation is a real estate investment trust (REIT). Through the Company�s wholly owned subsidiaries, it operates real estate sales and development business and five wood products manufacturing facilities that produce lumber and plywood. The Company operates in three business segments: Resource, Real Estate and Wood Products. The Resource segment manages the Company�s timberlands. The business of its Real Estate segment consists primarily of the sale of selected non-core timberland real estate. Its Wood Products segment manufactures and markets lumber and plywood. The Wood Products segment manufactures and markets lumber and plywood at five mills located in Arkansas, Idaho, Michigan and Minnesota.