Acquisitions	3 Months Ended
Mar. 31, 2015
Business Combinations [Abstract]
Acquisitions	Acquisitions On March 31, 2015, the Company, through its indirect subsidiary, OMG, Inc. (“OMG”), acquired certain assets and assumed certain liabilities of ITW Polymers Sealants North America Inc. (“ITW”), which are used in the business of manufacturing two-component polyurethane adhesive for the roofing industry, for a cash purchase price of $27.0 million, subject to a final working capital adjustment. The assets acquired and liabilities assumed primarily include net working capital of inventories and accrued liabilities; property, plant and equipment; and intangible assets, primarily unpatented technology, valued at $1.6 million, $0.1 million and $4.4 million, respectively, on a preliminary basis. ITW was the exclusive supplier of certain adhesive products to OMG, and this acquisition will provide OMG with greater control of its supply chain and allow OMG to expand its product development initiatives. The results of operations of the acquired business will be reported within the Company's Building Materials segment. In connection with the ITW acquisition, the Company has recorded goodwill totaling approximately $20.9 million on a preliminary basis, which is expected to be deductible for income tax purposes.

Acquisitions

On March 31, 2015, the Company, through its indirect subsidiary, OMG, Inc. (“OMG”), acquired certain assets and assumed certain liabilities of ITW Polymers Sealants North America Inc. (“ITW”), which are used in the business of manufacturing two-component polyurethane adhesive for the roofing industry, for a cash purchase price of $27.0 million, subject to a final working capital adjustment. The assets acquired and liabilities assumed primarily include net working capital of inventories and accrued liabilities; property, plant and equipment; and intangible assets, primarily unpatented technology, valued at $1.6 million, $0.1 million and $4.4 million, respectively, on a preliminary basis. ITW was the exclusive supplier of certain adhesive products to OMG, and this acquisition will provide OMG with greater control of its supply chain and allow OMG to expand its product development initiatives. The results of operations of the acquired business will be reported within the Company's Building Materials segment. In connection with the ITW acquisition, the Company has recorded goodwill totaling approximately $20.9 million on a preliminary basis, which is expected to be deductible for income tax purposes.