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Background and Nature of Operations	12 Months Ended
Background and Nature of Operations	Dec. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Background and Nature of Operations	BACKGROUND AND NATURE OF OPERATIONS Description of Business Continental Building Products, Inc. (the "Company") is a Delaware corporation. Prior to the acquisition of the gypsum division of Lafarge North America Inc. ("Lafarge N.A.") described below, the Company had no operating activity. The Company manufactures gypsum wallboard related products for commercial and residential buildings and houses. The Company operates a network of three highly efficient wallboard facilities, all located in the eastern United States, and produces joint compound at one plant in the United States and at another plant in Canada. The Acquisition On June 24, 2013, Lone Star Fund VIII (U.S.), L.P., (along with its affiliates and associates, but excluding the companies that it owns as a result of its investment activity, "Lone Star"), entered into a definitive agreement with Lafarge N.A. to purchase the assets of its North American gypsum division for an aggregate purchase price of approximately $703 million (the "Acquisition") in cash. The closing of the Acquisition occurred on August 30, 2013. Secondary Public Offerings On March 18, 2015, LSF8, an affiliate of Lone Star, sold 5,000,000 shares of the Company's common stock at a price per share of $19.40. As a result of the sale, the aggregate beneficial ownership of Lone Star fell below 50% of the Company's outstanding shares of common stock and the Company no longer qualified as a "Controlled Company" under the corporate governance standards of New York Stock Exchange. On May 15, 2015 and June 3, 2015, LSF8 sold an additional 4,600,000 and 361,747 shares of the Company's common stock, respectively, at a price per share of $21.90. On September 16, 2015, LSF8 sold an additional 4,600,000 shares of the Company's common stock at a price per share of $19.85. The decrease in ownership by Lone Star and its affiliates to below 50% and LSF8's subsequent sales of common stock triggered an aggregate of $29.9 million in payments to certain officers and the estate of the Company's former CEO under the LSF8 Gypsum Holdings, L.P. Long Term Incentive Plan, which was funded by LSF8 (See Note 17, Related Party Transactions). On March 18, 2016, following a series of secondary offerings, LSF8 Gypsum Holdings, L.P. ("LSF8") sold its remaining 5,106,803 shares of the Company's common stock at a price per share of $16.10. Following the March 18, 2016 transaction and the concurrent repurchase by the Company of 900,000 shares of Company's common stock from LSF8, to the best of the Company's knowledge, neither LSF8 nor any other affiliate of Lone Star held any shares of Company common stock (See Note 11, Treasury Stock).