Continental Building Products (CBPX) 10-Q 6 May 15 2015 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Mar. 31, 2015	1-May-15
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	FALSE
Document Period End Date	31-Mar-15
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Trading Symbol	CBPX
Entity Registrant Name	Continental Building Products, Inc.
Entity Central Index Key	1592480
Current Fiscal Year End Date	-19
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		44,120,336

Consolidated_Statements_of_Ope

Consolidated Statements of Operations (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Income Statement [Abstract]
Net Sales	$92,176	$86,973
Costs, expenses and other income:
Cost of goods sold	71,675	73,196
Selling and administrative	8,428	7,496
Long Term Incentive Plan funded by Lone Star	4,171
Total costs and operating expenses	84,274	80,692
Operating income (loss)	7,902	6,281
Other expense, net	-448	-5,186
Interest expense, net	-4,221	-14,176
Income (loss) before earnings on equity method investment and income tax	3,233	-13,081
Earnings from equity method investment	59
Income (loss) before income tax	3,292	-13,081
Income tax (expense) benefit	-1,272	4,458
Net income (loss)	$2,020	($8,623)
Net income (loss) per common share:
Basic	$0.05	($0.22)
Diluted	$0.05	($0.22)
Weighted average shares outstanding:
Basic	44,076,513	39,493,722
Diluted	44,092,900	39,493,722

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (Loss) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Statement of Comprehensive Income [Abstract]
Net income (loss)	$2,020	($8,623)
Foreign currency translation adjustment	-1,563	-841
Gain on derivatives qualifying as cash flow hedges, net of tax	93
Other comprehensive income (loss), net of tax	-1,470	-841
Comprehensive income (loss)	$550	($9,464)

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Assets
Cash	$18,505	$15,627
Receivables, net	38,053	40,152
Inventories	32,920	29,564
Prepaid and other current assets	7,337	8,330
Deferred taxes, current	3,155	3,157
Total current assets	99,970	96,830
Property, plant and equipment, net	345,118	353,652
Customer relationships and other intangibles, net	106,216	110,809
Goodwill	119,945	119,945
Equity method investment	10,765	10,919
Debt issuance costs	8,369	8,826
Total Assets	690,383	700,981
Liabilities and equity
Accounts payable	22,355	24,561
Accrued and other liabilities	7,740	11,428
Notes payable, current portion	0	0
Total current liabilities	30,095	35,989
Deferred taxes and other long-term liabilities	12,812	12,494
Notes payable, non-current portion	339,236	349,125
Total liabilities	382,143	397,608
Equity
Undesignated preferred stock, par value $0.001 per share; 10,000,000 shares authorized, no shares issued and outstanding at March 31, 2015 and December 31, 2014
Common stock, $0.001 par value per share; 190,000,000 shares authorized, 44,120,336 and 44,069,000 shares issued and outstanding at March 31, 2015 and December 31, 2014, respectively	44	44
Additional paid-in capital	292,710	288,393
Accumulated other comprehensive income (loss)	-4,530	-3,060
Accumulated earnings	20,016	17,996
Total equity	308,240	303,373
Total liabilities and equity	$690,383	$700,981

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Undesignated preferred Stock, par value	$0.00	$0.00
Undesignated preferred Stock, shares authorized	10,000,000	10,000,000
Undesignated preferred Stock, shares issued	0	0
Undesignated preferred Stock, shares outstanding	0	0
Common stock, par value	$0.00	$0.00
Common stock, shares authorized	190,000,000	190,000,000
Common stock, shares issued	44,120,336	44,069,000
Common stock, shares outstanding	44,120,336	44,069,000

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Cash flows from operating activities:
Net income (loss)	$2,020	($8,623)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	13,129	13,883
Bad debt expense	-175
Amortization of debt issuance costs and debt discount	547	7,526
Loss on disposal of property, plant and equipment	42
Earnings from equity method investment	-59
Share based compensation	146	86
Deferred taxes	366	-4,329
Change in assets and liabilities:
Receivables	2,171	-5,994
Inventories	-3,540	-9,817
Prepaid expenses and other current assets	962	-459
Accounts payable	-1,963	-1,993
Accrued and other current liabilities	-3,479	-6,350
Other long term liabilities	-45	129
Net cash provided by (used in) operating activities	10,122	-15,941
Cash flows from investing activities:
Capital expenditures	-721	-549
Software purchased or developed	-296	-735
Distributions from equity method investment	214
Net cash used in investing activities	-803	-1,284
Cash flows from financing activities:
Net proceeds from issuance of common stock		151,354
Principal payments for First Lien Credit Agreement	-10,000	-1,038
Repayment of Second Lien Credit Agreement		-155,000
Proceeds from revolving credit facility, net		13,500
Capital Contribution from Lone Star Funds	4,171
Net cash (used in) provided by financing activities	-5,829	8,816
Effect of foreign exchange rates on cash and cash equivalents	-612	-357
Net change in cash and cash equivalents	2,878	-8,766
Cash, beginning of period	15,627	11,822
Cash, end of period	$18,505	$3,056

Background_and_Nature_of_Opera

Background and Nature of Operations	3 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
Background and Nature of Operations	1. Background and Nature of Operations
	Description of Business
	Continental Building Products, Inc. (“CBP”, or the “Company”) is a Delaware corporation. Prior to the acquisition of the gypsum division of Lafarge North America Inc. (“Lafarge N.A.”) on August 30, 2013, further described below, CBP had no operating activity. The accompanying consolidated financial statements of CBP for the three months ended March 31, 2015 and March 31, 2014 contain activity of the acquired business.
	The Company manufactures gypsum wallboard and 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 Funds (“Lone Star”) entered into a definitive agreement with Lafarge N.A. to purchase the assets of its North American gypsum division for a total purchase price of approximately $703 million (the “Acquisition”) in cash. The closing of the Acquisition occurred on August 30, 2013.
	Initial Public Offering
	On February 10, 2014, the Company completed the initial public offering of 11,765,000 shares of its common stock at an offering price of $14.00 per share (the “Initial Public Offering”). Net proceeds from the Initial Public Offering after underwriting discounts and commissions, but before other closing costs, were approximately $154 million. The net proceeds were used to pay a $2 million one-time payment to Lone Star in consideration for the termination of the Company’s asset advisory agreement with affiliates of Lone Star (See Note 10, Related Party Transactions). The remaining $152 million of net proceeds and cash on hand of $6.1 million were used to repay the $155 million Second Lien Term Loan in full along with a prepayment premium of $3.1 million (See Note 13, Debt). In expectation of the Initial Public Offering, on February 3, 2014, the Company effected a 32,304 for one stock split of its common stock. The Company’s common stock trades on the New York Stock Exchange under the symbol “CBPX”.
	Secondary Public Offering
	On March 18, 2015, LSF8 Gypsum Holdings, L.P. (“LSF8”), an affiliate of Lone Star, sold 5,000,000 shares of the Company’s common stock. 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. As of the closing of the offering and March 31, 2015, the Company was in compliance with the New York Stock Exchange transition rules regarding the loss of Controlled Company status. The decrease in ownership by Lone Star or its affiliates to below 50% triggered an aggregate of $4.2 million in payments to certain officers and the estate of our former CEO under the LSF8 Gypsum Holdings, L.P. Long Term Incentive Plan which are funded by LSF8 (See Note 10, Related Party Transaction). As these payments arose out of employment with the Company, the $4.2 million expense was recorded on the Company’s books in the first quarter of 2015 and will also be deductible for tax purposes.

Significant_Accounting_Policie

Significant Accounting Policies	3 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
Significant Accounting Policies	2. Significant Accounting Policies
	Basis of Presentation
	The accompanying consolidated financial statements for CBP have been prepared in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”). The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All intercompany transactions have been eliminated.
	Basis of Presentation for Interim Periods
	Certain information and footnote disclosures normally included for the annual financial statements prepared in accordance with U.S. GAAP have been condensed or omitted for the interim periods presented. Management believes that the unaudited interim financial statements include all adjustments (which are normal and recurring in nature) necessary to present fairly the financial position of the Company and results of operations and cash flows for the periods presented.
	The results of operations for the periods presented are not necessarily indicative of the results that may be expected for the year ending December 31, 2015. Seasonal changes and other conditions can affect the sales volumes of the Company’s products. Therefore, the financial results for any interim period do not necessarily indicate the expected results for the year.
	The financial statements should be read in conjunction with CBP’s audited consolidated financial statements and the notes thereto for the year ended December 31, 2014 included in the Company’s Annual Report on Form 10-K for the fiscal year then-ended (the “2014 10-K”). The Company has continued to follow the accounting policies set forth in those financial statements.
	Recent Accounting Pronouncements
	In May 2014, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update (“ASU”) No. 2014-09, Revenue from Contracts with Customers (Topic 606), which provides accounting guidance for all revenue arising from contracts with customers and affects all entities that enter into contracts to provide goods or services to their customers. ASU 2014-09 will be effective for the Company in the first quarter of 2017 and requires retroactive application on either a full or modified basis. Early application is not permitted. The Company is currently evaluating ASU 2014-09 to determine its impact on its consolidated financial statements and disclosures. In April 2015, the FASB proposed to defer implementation of this ASU by one year. Under this proposal, the ASU will be effective for the Company in the first quarter of 2018.
	In August 2014, the FASB issued ASU No. 2014-15, Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern : Presentation of Financial Statements— Going Concern (Subtopic 205-40). This ASU defines when and how companies are required to disclose going concern uncertainties, which must be evaluated each interim and annual period. Specifically, it requires management to determine whether substantial doubt exists regarding the entity’s going concern presumption. Substantial doubt about an entity’s ability to continue as a going concern exists when relevant conditions and events, considered in the aggregate, indicate that it is probable that the entity will be unable to meet its obligations as they become due within one year after the date that the financial statements are issued (or available to be issued). If substantial doubt exists, certain disclosures are required; the extent of those disclosures depends on an evaluation of management’s plans (if any) to mitigate the going concern uncertainty. The provisions of ASU 2014-15 will be effective for annual periods ending after December 15, 2016, and to annual and interim periods thereafter. Early adoption is permitted. The ASU should be applied on a prospective basis. The Company believes the adoption of this ASU will not have a material impact on the Company’s disclosures.
	In April 2015, the FASB issued ASU 2015-03, which changes the presentation of debt issuance costs in financial statements. Under the ASU, an entity presents such costs in the balance sheet as a direct deduction from the related debt liability rather than as an asset. Amortization of the costs is reported as interest expense. ASU 2015-03 will be effective for the Company in the first quarter of 2016. Early adoption is permitted. Upon adoption, the guidance must be applied retroactively to all periods presented in the financial statements. The adoption of this guidance will result in a reclassification of debt issuance costs on the Company’s balance sheet, but will not have a material impact on our results of operations.

Receivables

Receivables	3 Months Ended
	Mar. 31, 2015
Receivables [Abstract]
Receivables	3. Receivables
	Receivables consist of the following:
	(in thousands)	As of			As of
		March 31, 2015			December 31, 2014
	Trade receivables	$	39,979		$	42,460
	Total allowances		(1,926	)		(2,308	)
	Total receivables, net	$	38,053		$	40,152
	Trade receivables are recorded net of credit memos issued during the normal course of business.

Inventories

Inventories	3 Months Ended
	Mar. 31, 2015
Inventory Disclosure [Abstract]
Inventories	4. Inventories
	Inventories consist of the following:
	(in thousands)	As of		As of
		March 31, 2015		December 31, 2014
	Finished products	$	7,899	$	4,875
	Raw materials		17,151		17,010
	Supplies and other		7,870		7,679
	Total inventories	$	32,920	$	29,564

Property_Plant_and_Equipment

Property, Plant and Equipment	3 Months Ended
	Mar. 31, 2015
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	5. Property, Plant and Equipment
	Property, plant and equipment consist of the following:
		As of			As of
		March 31, 2015			December 31, 2014
	Land	$	12,927		$	12,930
	Buildings		111,782			111,506
	Plant machinery		269,940			269,633
	Mobile equipment		3,518			3,448
	Construction in progress		2,857			3,165
	Property, plant and equipment, at cost		401,024			400,682
	Accumulated depreciation		(55,906	)		(47,030	)
	Total property, plant and equipment, net	$	345,118		$	353,652
	Depreciation expense was $8.9 million for the three months ended March 31, 2015 and $8.8 million for the three months ended March 31, 2014.

Software_and_Other_Intangibles

Software and Other Intangibles	3 Months Ended
	Mar. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Software and Other Intangibles	6. Software and Other Intangibles
	Customer relationships and other intangibles consist of the following:
	(in thousands)	As of			As of
		March 31, 2015			December 31, 2014
	Customer relationships	$	116,663		$	117,243
	Purchased and internally developed Software		4,477			4,332
	Trademarks		14,833			14,905
	Customer relationships and other intangibles, at cost		135,973			136,480
	Accumulated amortization		(29,757	)		(25,671	)
	Customer relationships and other intangibles, net	$	106,216		$	110,809
	Amortization expense was $4.2 million for the three months ended March 31, 2015 and $5.1 million for the three months ended March 31, 2014.
	Amortization of customer relationships is done over a 15-year period using an accelerated method that reflects the expected future cash flows from the acquired customer-related intangible asset. Trademarks are amortized on a straight-line basis over the estimated useful life of 15 years.
	Amortization expense related to capitalized software was $0.4 million for three months ended March 31, 2015. No amortization for capitalized software was recorded for the three months ended March 31, 2014 as development of a new ERP system was in process and the software not yet put into service. Software development costs are amortized over a three-year life with the expense recorded in selling and administrative expense.

Accrued_and_Other_Liabilities

Accrued and Other Liabilities	3 Months Ended
	Mar. 31, 2015
Payables and Accruals [Abstract]
Accrued and Other Liabilities	7. Accrued and Other Liabilities
	Accrued and other liabilities consist of the following:
	(in thousands)	As of		As of
		March 31, 2015		December 31, 2014
	Vacation and other employee-related costs	$	2,468		7,945
	VAT taxes		811		1,220
	Income taxes		—		—
	Long Term Incentive Plan funded by Lone Star		1,963		—
	Other		2,498		2,263
	Total accrued and other liabilities	$	7,740	$	11,428

Income_Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2015
Income Tax Disclosure [Abstract]
Income Taxes	8. Income Taxes
	The Company’s projected estimated effective tax rate for the 2015 fiscal year is approximately 38% and the Company did not recognize any discrete tax items for the three months ended March 31, 2015. At both, March 31, 2015 and December 31, 2014, there was a valuation allowance of $0.4 million related to the Company’s Canadian operations.
	The Company is subject to audit examinations at federal, state and local levels by tax authorities in those jurisdictions. In addition, the Canadian operations are subject to audit examinations at federal and provincial levels by tax authorities in those jurisdictions. The tax matters challenged by the tax authorities are typically complex; therefore, the ultimate outcome of these challenges is subject to uncertainty. The Company has not identified any issues that did not meet the recognition threshold or would be impacted by the measurement provisions of the uncertain tax position guidance.

Commitments_and_Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	9. Commitments and Contingencies
	The Company leases certain buildings and equipment. The Company’s facility and equipment leases may provide for escalations of rent or rent abatements and payment of pro rata portions of building operating expenses. Minimum lease payments are recognized on a straight-line basis over the minimum lease term. During the three months ended March 31, 2015 and March 31, 2014, total expenses under operating leases were $1.1 million and $1.4 million, respectively. The Company also has noncapital purchase commitments that primarily relate to gas, gypsum, paper and other raw materials.
	The table below shows the future minimum lease payments due under non-cancelable operating leases and purchase commitments at March 31, 2015:
	(in thousands)		Total		Remaining		2016		2017		2018		2019		2020		Thereafter
					2015
	Operating leases (1)		$	5,934	$	1,321	$	1,320	$	1,183	$	616	$	1,494	$	—	$	—
	Purchase commitments			163,165		23,406		29,414		29,296		19,410		16,529		14,145		30,965
	Total commitments		$	169,099	$	24,727	$	30,734	$	30,479	$	20,026	$	18,023	$	14,145	$	30,965
	-1	Future minimum lease payments over the non-cancelable lease terms of the operating leases.
	Under certain circumstances, the Company provides letters of credit related to its natural gas and other supply purchases. At March 31, 2015 and December 31, 2014, the Company had outstanding letters of credit of approximately $3.6 million and $4.8 million, respectively.
	In the ordinary course of business, the Company executes contracts involving indemnifications standard in the industry. These indemnifications might include claims relating to any of the following: environmental and tax matters; intellectual property rights; governmental regulations and employment-related matters; customer, supplier, and other commercial contractual relationships; and financial matters. While the maximum amount to which the Company may be exposed under such agreements cannot be estimated, it is the opinion of management that these indemnifications are not expected to have a materially adverse effect on the Company’s financial condition, results of operations or liquidity.
	In the ordinary course of business, the Company is involved in certain legal actions and claims, including proceedings under laws and regulations relating to environmental and other matters. Because such matters are subject to many uncertainties and the outcomes are not predictable with assurance, the total liability for these legal actions and claims cannot be determined with certainty. When the Company determines that it is probable that a liability for environmental matters, legal actions or other contingencies has been incurred and the amount of the loss is reasonably estimable, an estimate of the costs to be incurred is recorded as a liability in the financial statements. As of March 31, 2015 and March 31, 2014, such liabilities were not material to the Company’s financial statements. While management believes its accruals for such liabilities are adequate, the Company may incur costs in excess of the amounts provided. Although the ultimate amount of liability that may result from these matters or actions is not ascertainable, the Company believes that any amounts exceeding the recorded accruals will not materially affect its financial condition.
	In March 2015, a group of homebuilders commenced a lawsuit against the Company and other US wallboard manufacturers alleging that such manufacturers had conspired to fix the price of wallboard in violation of antitrust and unfair competition laws. The complaint also alleges that the manufacturers agreed to abolish the use of “job quotes” and agreed to restrict the supply of wallboard in order to support the allegedly collusive price increases. The Company denies any wrongdoing of the type alleged in the complaint and believes that it has meritorious defenses to the allegations and will vigorously defend itself in this case. The case has been transferred to the Eastern District of Pennsylvania for coordinated and consolidated pretrial proceedings with existing antitrust litigation in that district. The Company does not believe the lawsuit will have a material adverse effect on its financial condition, results of operation or liquidity.

Related_Party_Transactions

Related Party Transactions	3 Months Ended
	Mar. 31, 2015
Related Party Transactions [Abstract]
Related Party Transactions	10. Related Party Transactions
	Since the Acquisition, the Company is no longer part of Lafarge N.A. but had a Transition Services Agreement to help with certain ongoing back-office functions. These functions included, among others, accounting, treasury, tax, and information technology services. The Company paid Lafarge N.A. a fee for these services of $129,700 per month through September 2014. Thereafter, the Company reduced the services provided by Lafarge N.A. and the fees paid until the Agreement was terminated in December 2014.
	On August 30, 2013, the Company entered into an advisory agreement with an affiliate of Lone Star to provide certain management oversight services to the Company, including assistance and advice on strategic plans, obtaining and maintaining certain legal documents, and communicating and coordinating with service providers. The Company paid 110% of actual costs for the services provided. No services were provided in the first quarter of 2014. The agreement was terminated upon the closing of the Initial Public Offering in the first quarter of 2014 and in connection therewith, the Company paid a termination fee of $2.0 million that is included in non-operating expense.
	In connection with the March 2015 secondary public offering, certain executives of the Company earned incentive payments totaling approximately $4.2 million. These payments were earned under the LSF8 Gypsum Holdings, L.P. Long Term Incentive Plan (the “LTIP”). Under the LTIP, certain of the Company’s officers and the estate of the Company’s former CEO are eligible to receive payments from LSF8 in the event of a monetization event, as further described in the 2014 10-K. LSF8 is responsible for funding any payments under the LTIP, including those paid in connection with the March 2015 secondary public offering (See Note 1, Background and Nature of Operations). As these payments arose out of employment with the Company, the Company is required to record the expense of these payments and recognize the funding by LSF8 as additional paid in capital. The $4.2 million related to the March 2015 secondary public offering was recorded as an expense to the Company, that will also be tax deductible, and a capital contribution by LSF8 in the first quarter of fiscal 2015.

Investment_in_Seven_Hills

Investment in Seven Hills	3 Months Ended
	Mar. 31, 2015
Investments Schedule [Abstract]
Investment in Seven Hills	11. Investment in Seven Hills
	The Company is a party to a paperboard liner venture with an unaffiliated third-party named Seven Hills Paperboard, LLC (“Seven Hills”) that provides the Company with a continuous supply of high-quality recycled paperboard liner to meet its ongoing production requirements.
	The Company has evaluated the characteristics of its investment and determined that Seven Hills would be deemed a variable interest entity, but that it did not have the power to direct the principal activities most impacting the economic performance of Seven Hills, and is thus not the primary beneficiary. As such, the Company accounts for this investment in Seven Hills under the equity method of accounting.
	Paperboard purchased from Seven Hills was $11.1 million and $12.9 million for the three months ended March 31, 2015 and March 31, 2014, respectively. As of March 31, 2015, the Company has certain paper purchase commitments to Seven Hills totaling $39.6 million through 2018.

Fair_Value_Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value Measurements	12. Fair Value Measurements
	U.S. GAAP provides a framework for measuring fair value, establishes a fair value hierarchy of the valuation techniques used to measure the fair value and requires certain disclosures relating to fair value measurements. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants in a market with sufficient activity.
	The three-tier fair value hierarchy which prioritizes the inputs used in measuring fair value is as follows:
		•	Level 1—Observable inputs such as quoted prices (unadjusted) in active markets for identical assets or liabilities that a Company has the ability to access;
		•	Level 2—Inputs, other than the quoted market prices included in Level 1, which are observable for the asset or liability, either directly or indirectly; and
		•	Level 3—Unobservable inputs for the asset or liability which is typically based on an entity’s own assumptions when there is little, if any, related market data available.
	The Company evaluates assets and liabilities subject to fair value measurements on a recurring and non-recurring basis to determine the appropriate level to classify them for each reporting period. This determination requires significant judgments to be made by the Company. The fair values of receivables, accounts payable, accrued costs and other current liabilities approximate the carrying values as a result of the short-term nature of these instruments.
	The Company estimates the fair value of its debt by discounting the future cash flows of each instrument using estimated market rates of debt instruments with similar maturities and credit profiles. These inputs are classified as Level 3 within the fair value hierarchy. As of March 31, 2015 and 2014, the carrying value reported in the consolidated balance sheet for the Company’s notes payable approximated its fair value.
	The only assets or liabilities the Company had at March 31, 2015 that are recorded at fair value on a recurring basis are the interest rate cap that the Company entered into on March 31, 2014 that had zero fair value as of March 31, 2015 (see Note 13, Debt) and a fair value of $0.03 million as of December 31, 2014, and natural gas hedges that had a negative fair value of $0.8 million at March 31, 2015, net of tax amount of $0.5 million, and $0.9 million at December 31, 2014, net of tax amount of $0.5 million. Both the interest rate cap and the natural gas hedges are classified within Level 2 of the fair value hierarchy as they are valued using third party pricing models which contain inputs that are derived from observable market data. Generally, the Company obtains its Level 2 pricing inputs from the counterparties. Substantially all of these assumptions are observable in the marketplace throughout the full term of the instrument, can be derived from observable data or are supported by observable levels at which transactions are executed in the marketplace.
	Assets and liabilities that are measured at fair value on a non-recurring basis include intangible assets and goodwill. These items are recognized at fair value when they are considered to be impaired.
	There were no fair value adjustments for assets and liabilities measured on a non-recurring basis. The Company discloses fair value information about financial instruments, whether or not recognized in the balance sheet, for which it is practicable to estimate that value.

Debt

Debt	3 Months Ended
	Mar. 31, 2015
Debt Disclosure [Abstract]
Debt	13. Debt
	Debt consists of the following:
	(in thousands)	As of			As of
		March 31, 2015			December 31, 2014
	First Lien Credit Agreement maturing on August 28, 2020; interest rate of LIBOR (with a 1% floor) plus 3.00% at March 31, 2015 and 3.75% at March 31, 2014	$	341,988		$	351,988
	Less: Original issue discount (net of amortization)		(2,752	)		(2,863	)
	Total debt		339,236			349,125
	Less: Current portion of long-term debt		—			—
	Long-term debt	$	339,236		$	349,125
	On August 30, 2013, the Company and its subsidiary Continental Building Products Operating Company, LLC (“OpCo”) entered into a first lien credit agreement with Credit Suisse AG, as administrative agent, Credit Suisse Securities (USA) LLC and RBC Capital Markets, as joint lead arrangers and joint bookrunners, and Royal Bank of Canada, as syndication agent (as amended on December 2, 2013, the “First Lien Credit Agreement”). The First Lien Credit Agreement provided OpCo a term loan facility at an initial amount of $415.0 million and a U.S. dollar revolving loan facility of $40.0 million and a Canadian dollar and/or U.S. dollar revolving facility of $10.0 million (such aggregate $50.0 million revolving facilities together, the “Revolver”), which may be borrowed by OpCo or by its subsidiary, Continental Building Products Canada Inc. in Canadian dollars or U.S. dollars.
	On August 30, 2013, the Company and OpCo entered into a second lien credit agreement with Credit Suisse AG, as administrative agent, Credit Suisse Securities (USA) LLC and RBC Capital Markets, as joint lead arrangers and joint bookrunners, and Royal Bank of Canada, as syndication agent (as amended on December 2, 2013, the “Second Lien Credit Agreement”). The Second Lien Credit Agreement provided OpCo a term loan facility of $155.0 million (the “Second Lien Term Loan”).
	On February 10, 2014, the Company completed the Initial Public Offering and used $152 million of net proceeds from the Initial Public Offering and cash on hand of $6.1 million to repay the $155 million Second Lien Term Loan in full along with a prepayment premium of $3.1 million. The $3.1 million prepayment premium was recorded in other (expense) income. The prepayment of the Second Lien Term Loan also resulted in the write-off of $6.9 million in original issue discount and deferred financing fees that were recorded in interest expense.
	Interest under the First Lien Credit Agreement is floating. The interest rate spread over LIBOR, which has a 1% floor, was reduced by 50 basis points in May 2014, from 3.75% to 3.25%, as a result of the Company achieving a total leverage ratio of less than four times net debt to the trailing twelve months adjusted earnings before interest, depreciation and amortization, as of March 31, 2014, as calculated pursuant to the First Lien Credit Agreement. This reduced interest rate for the First Lien Credit Agreement will be in effect for as long as the leverage ratio, as calculated pursuant to the First Lien Credit Agreement, remains below four. The margin applicable to the borrowing was further reduced in the third quarter 2014 by 25 basis points to 3.00% after the Company achieved a B2 rating with a stable outlook by Moody’s and will remain in effect as long as this rating and outlook are maintained or better.
	The First Lien Credit Agreement is secured by the underlying property and equipment of the Company. During the first quarter of 2015, the Company pre-paid $10.0 million of principal payments and no further quarterly mandatory principal payments are required until the final payment of $342.0 million due on August 28, 2020. The annual effective interest rate on the First Lien Credit Agreement including original issue discount and amortization of debt issuance costs was 4.7% at March 31, 2015.
	There were no amounts outstanding under the Revolver as of March 31, 2015. The interest rate on amounts outstanding under the Revolver is floating, based on LIBOR (with a floor of 1%), plus 225 basis points. In addition, CBP pays a facility fee of 50 basis points per annum on the total Revolver. Availability under the Revolver, based on draws and outstanding letters of credit and non-existence of violations of covenants, was $46.4 million at March 31, 2015.
	Total cash interest paid for the three months ended March 31, 2015 and March 31, 2014 was $3.5 million and $6.6 million, respectively.
	The table below shows the future minimum principal payments due under the First Lien Credit Agreement.
	(in thousands)	Amount Due
	2015		—
	2016		—
	2017		—
	2018		—
	2019		—
	Thereafter	$	341,988
	Under the terms of the First Lien Credit Agreement, the Company is required to comply with certain covenants, including among others, a limitation of indebtedness, limitation on liens, and limitations on certain cash distributions. One single financial covenant governs all of the Company’s debt and applies only if the outstanding borrowings of the Revolver plus outstanding letters of credit are greater than $12.5 million as of the end of the quarter. The financial covenant is a total leverage ratio calculation, in which total debt less outstanding cash is divided by adjusted earnings before interest, depreciation and amortization. If the financial covenant were applicable, it would require a leverage ratio below 6.0 as of March 31, 2015. As the sum of outstanding borrowings under the Revolver and outstanding letters of credit were less than $12.5 million at March 31, 2015, the financial covenant was not applicable for the quarter.

Derivative_Instruments

Derivative Instruments	3 Months Ended
	Mar. 31, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments	14. Derivative Instruments
	The Company uses derivative instruments to manage selected commodity price and interest rate exposures. The Company does not use derivative instruments for speculative trading purposes, and typically does not hedge beyond two years. Cash flows from derivative instruments are included in net cash provided by operating activities in the consolidated statements of cash flows.
	Commodity Derivative Instruments
	As of March 31, 2015, the Company had 1,125 thousand millions of British Thermal Units (“mmBTUs”) in aggregate notional amount outstanding natural gas swap contracts to manage natural gas price exposures. All of these contracts mature by October 31, 2015. The Company elected to designate these derivative instruments as cash flow hedges in accordance with FASB Accounting Standards Codification (“ASC”) 815-20, Derivatives—Hedging . For derivative contracts designated as cash flow hedges, the effective portion of changes in the fair value of the derivative is recorded to accumulated other comprehensive income, and is reclassified to earnings when the underlying forecasted transaction affects earnings. The ineffective portion of changes in the fair value of the derivative is recorded in cost of goods sold. The net unrealized loss that remained in accumulated other comprehensive income (loss), as of March 31, 2015 was $0.8 million, which is net of a tax amount of $0.5 million. No ineffectiveness was recorded on these contracts during the fiscal year 2014 and the first quarter of 2015. Gains and losses on these contracts that are designated as cash flow hedges are reclassified into earnings when the underlying forecasted transactions affect earnings. The Company reassesses the probability of the underlying forecasted transactions occurring on a quarterly basis.
	On a pre-tax basis, for the quarter ended March 31, 2015, approximately $0.1 million of gains were recognized in other comprehensive income for the commodity contracts. For the same period, the amount of gain reclassified from accumulated other comprehensive income into income was nominal. As of March 31, 2015, $0.8 million was recorded in other current liabilities.
	Interest Rate Derivative Instrument
	At March 31, 2015, the Company had an interest rate cap on three month U.S. Dollar LIBOR of 2% for a notional amount of $204.4 million, representing 59.8% of the principal amount outstanding under the First Lien Credit Agreement as of March 31, 2015. The notional amount of the interest rate cap declines by $0.5 million each quarter through December 31, 2015. The objective of the hedge is to protect the cash flows from adverse extreme market interest rate changes for a portion of the First Lien Credit Agreement through March 31, 2016. Changes in the fair value of the interest rate cap are expected to be perfectly effective in offsetting the changes in cash flow of interest payments attributable to fluctuations for three month U.S. Dollar LIBOR interest rates above 2%. The hedge is being accounted for as a cash flow hedge.
	Changes in the time value of the interest rate cap are reflected directly in earnings through “other income / expense” in non-operating income. CBP recorded a $0.03 million loss for the three months ended March 31, 2015. The fair value of the time value of the interest rate cap was $0 as of March 31, 2015.
	Counterparty Risk
	The Company is exposed to credit losses in the event of nonperformance by the counterparties to the Company’s derivative instruments. As of March 31, 2015, the Company’s derivatives were in a $0.8 million net liability position. All of the Company’s counterparties have investment grade credit ratings; accordingly, the Company anticipates that the counterparties will be able to fully satisfy their obligations under the contracts. The Company’s agreements outline the conditions upon which it or the counterparties are required to post collateral. As of March 31, 2015, the Company had no collateral posted with its counterparties related to the derivatives.

Segment_Reporting

Segment Reporting	3 Months Ended
	Mar. 31, 2015
Segment Reporting [Abstract]
Segment Reporting	15. Segment Reporting
	Segment information is presented in accordance with ASC 280, Segment Reporting , which establishes standards for reporting information about operating segments. It also establishes standards for related disclosures about products and geographic areas. The Company’s primary reportable segment is wallboard which represented approximately 96% and 95% of the Company’s revenues for the first quarter of 2015 and 2014, respectively. This segment produces wallboard for the commercial and residential construction sectors. The Company also operates other business activities, primarily finishing products, which complement the Company’s full range of wallboard products.
	Revenues from the major products sold to external customers include gypsum wallboard and finishing products.
	The Company’s two geographic areas consist of the United States and Canada for which it reports net sales, fixed assets and total assets.
	The Company evaluates operating performance based on profit or loss from operations before certain adjustments as shown below. Revenues are attributed to geographic areas based on the location of the assets producing the revenues. The Company did not provide asset information by segment as the Company’s Chief Operating Decision Maker does not use such information for purposes of allocating resources and assessing segment performance.
	Reportable segment information consists of the following:
	(in thousands)	Three Months			Three Months
		Ended			Ended
		March 31, 2015			March 31, 2014
	Net Sales:
	Wallboard		88,743			82,918
	Other		3,433			4,055
	Total net sales		92,176			86,973
	Operating income (loss):
	Wallboard		7,778			6,356
	Other		124			(75	)
	Total operating income (loss)		7,902			6,281
	Adjustments:
	Interest Expense		(4,221	)		(14,176	)
	Gain (loss) from Equity Investment		59			—
	Other non-operating expenses		(448	)		(5,186	)
	Income (loss) before income tax benefit		3,292			(13,081	)
	Depreciation and Amortization
	Wallboard		12,835			13,583
	Other		294			300
	Total depreciation and amortization		13,129			13,883

ShareBased_Compensation

Share-Based Compensation	3 Months Ended
	Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share-Based Compensation	16. Share-Based Compensation
	In conjunction with the Initial Public Offering, the Company granted certain employees and independent members of the Board of Directors an aggregate of 142,000 stock options and 75,000 shares of restricted stock that vest over four years. The fair value of stock options was determined using the Black Scholes option pricing model with the following assumptions: (a) a risk free interest rate assumption of 2.15%, based on the U.S. Treasury yield curve in effect at the time of the grant; (b) a dividend yield of 0% as the Company currently has no plans to pay a dividend; (c) a volatility assumption of 50.34%, based on historical volatilities of comparable publicly traded companies, and (d) an expected life of 6.25 years based on the assumption that the options will be exercised evenly from time of vesting to the expiration date.
	On March 2, 2015, the Company granted certain employees and independent members of the Board of Directors 62,070 Restricted Stock Units (“RSUs”) and 40,050 RSUs that are subject to certain performance conditions (“PRSUs”). Of the 62,070 RSUs, 7,580 fully vest after one year, and 54,490 vest ratably over four years. The PRSUs vest on December 31, 2017, with the exact number of PRSUs vested subject to the achievement of certain performance conditions through December 31, 2016. The number of PRSUs earned will vary from 0% to 200% of the number of PRSUs awarded, depending on our performance relative to a cumulative two year EBITDA target for fiscal years 2015 and 2016. The fair value of each RSU and PRSU is equal to the market price of our common stock at the date of the grant.
	The following table summarizes RSA, RSU and PRSU activity for the three months ending March 31, 2015:
		Number of RSAs			Number of RSUs		Number of PRSUs		Weighted Average
									Grant Date Value
	Non-Vested, December 31, 2014		55,000			—		—	$	14
	Granted		—			62,070		40,050	$	21.07
	Forfeited		(1,500	)		—		—	$	14
	Vested		(13,750	)		—		—	$	14
	Non-Vested, March 31, 2015		39,750			62,070		40,050	$	19.09
	The following table summarizes stock option activity for the three months ending March 31, 2015:
		Number of			Weighted		Aggregate		Weighted
		Shares			Average		Intrinsic Value		Average
					Exercise				Remaining
					Price				Contractual
									Term (in Years)
	Oustanding, January 1, 2015		142,000		$	14
	Granted		—			—
	Forefeited		(1,444	)	$	14
	Exercised		—			—
	Outstanding, March 31, 2015		140,556		$	14	$	1,207,376		8.86
	Exercisable, March 31, 2015		80,500		$	14	$	691,495		8.86
	Vested and Expected to Vest, March 31, 2015		140,556		$	14	$	1,207,376		8.86
	Unearned compensation related to stock options as of March 31, 2015 of $0.4 million will be recognized over a weighted average remaining period of approximately three years. Compensation expense of $0.1 million was recorded for share-based awards for the three months ended March 31, 2015 and 2014.
	Employee Stock Purchase Plan
	Effective February 18, 2015, subject to approval by the Company’s stockholders at the Company’s upcoming 2015 Annual Stockholder Meeting to be held on May 20, 2015, the Company adopted an Employee Stock Purchase Plan (“ESPP”), that will enable employees to purchase the Company’s shares at a discount. The ESPP authorizes the issuance of up to 600,000 shares of the Company’s common stock, but actual shared issued will depend on plan participation. Shares issued under the ESPP will reduce, on a share-for-share basis, the number of shares of the Company’s common stock already available for issuance pursuant to the Company’s 2014 Stock Incentive Plan. Employees contribute to the ESPP through payroll deductions over a twelve month offering period and are limited to the lower of 10% of the employee’s salary or $10,000 per employee. The first offering period will commence on May 1, 2015.

Earnings_Loss_Per_Share

Earnings (Loss) Per Share	3 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
Earnings (Loss) Per Share	17. Earnings (Loss) Per Share
	Basic earnings (loss) per share is based on the weighted average number of shares of common stock outstanding assuming the 32,304 for one stock split occurred as of January 1, 2014 and taking into account the issuance of 11,765,000 new shares on February 10, 2014 in connection with the Initial Public Offering. Diluted earnings and loss per share is based on the weighted average number of shares outstanding plus the dilutive effect, if any, of outstanding restricted stock, restricted stock units and stock options.
	Earnings (Loss) Per Share
	(in thousands, except per share data)	Three Months		Three Months
		Ended		Ended
		March 31, 2015		March 31, 2014
	Net income (loss)(in thousands)	$	2,020	$	(8,623	)
	Weighted average shares outstanding - basic		44,077		39,494
	Dilutive effect of stock options		16		—
	Weighted average shares outstanding - diluted		44,093		39,494
	Net income per common share:
	Basic	$	0.05	$	(0.22	)
	Diluted	$	0.05	$	(0.22	)

Significant_Accounting_Policie1

Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2015
Basis of Presentation	Basis of Presentation
	The accompanying consolidated financial statements for CBP have been prepared in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”). The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All intercompany transactions have been eliminated.
Recent Accounting Pronouncements	Recent Accounting Pronouncements
	In May 2014, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update (“ASU”) No. 2014-09, Revenue from Contracts with Customers (Topic 606), which provides accounting guidance for all revenue arising from contracts with customers and affects all entities that enter into contracts to provide goods or services to their customers. ASU 2014-09 will be effective for the Company in the first quarter of 2017 and requires retroactive application on either a full or modified basis. Early application is not permitted. The Company is currently evaluating ASU 2014-09 to determine its impact on its consolidated financial statements and disclosures. In April 2015, the FASB proposed to defer implementation of this ASU by one year. Under this proposal, the ASU will be effective for the Company in the first quarter of 2018.
	In August 2014, the FASB issued ASU No. 2014-15, Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern : Presentation of Financial Statements— Going Concern (Subtopic 205-40). This ASU defines when and how companies are required to disclose going concern uncertainties, which must be evaluated each interim and annual period. Specifically, it requires management to determine whether substantial doubt exists regarding the entity’s going concern presumption. Substantial doubt about an entity’s ability to continue as a going concern exists when relevant conditions and events, considered in the aggregate, indicate that it is probable that the entity will be unable to meet its obligations as they become due within one year after the date that the financial statements are issued (or available to be issued). If substantial doubt exists, certain disclosures are required; the extent of those disclosures depends on an evaluation of management’s plans (if any) to mitigate the going concern uncertainty. The provisions of ASU 2014-15 will be effective for annual periods ending after December 15, 2016, and to annual and interim periods thereafter. Early adoption is permitted. The ASU should be applied on a prospective basis. The Company believes the adoption of this ASU will not have a material impact on the Company’s disclosures.
	In April 2015, the FASB issued ASU 2015-03, which changes the presentation of debt issuance costs in financial statements. Under the ASU, an entity presents such costs in the balance sheet as a direct deduction from the related debt liability rather than as an asset. Amortization of the costs is reported as interest expense. ASU 2015-03 will be effective for the Company in the first quarter of 2016. Early adoption is permitted. Upon adoption, the guidance must be applied retroactively to all periods presented in the financial statements. The adoption of this guidance will result in a reclassification of debt issuance costs on the Company’s balance sheet, but will not have a material impact on our results of operations.
Interim Period [Member]
Basis of Presentation	Basis of Presentation for Interim Periods
	Certain information and footnote disclosures normally included for the annual financial statements prepared in accordance with U.S. GAAP have been condensed or omitted for the interim periods presented. Management believes that the unaudited interim financial statements include all adjustments (which are normal and recurring in nature) necessary to present fairly the financial position of the Company and results of operations and cash flows for the periods presented.
	The results of operations for the periods presented are not necessarily indicative of the results that may be expected for the year ending December 31, 2015. Seasonal changes and other conditions can affect the sales volumes of the Company’s products. Therefore, the financial results for any interim period do not necessarily indicate the expected results for the year.
	The financial statements should be read in conjunction with CBP’s audited consolidated financial statements and the notes thereto for the year ended December 31, 2014 included in the Company’s Annual Report on Form 10-K for the fiscal year then-ended (the “2014 10-K”). The Company has continued to follow the accounting policies set forth in those financial statements.

Receivables_Tables

Receivables (Tables)	3 Months Ended
	Mar. 31, 2015
Receivables [Abstract]
Components of Receivables	Receivables consist of the following:
	(in thousands)	As of			As of
		March 31, 2015			December 31, 2014
	Trade receivables	$	39,979		$	42,460
	Total allowances		(1,926	)		(2,308	)
	Total receivables, net	$	38,053		$	40,152

Inventories_Tables

Inventories (Tables)	3 Months Ended
	Mar. 31, 2015
Inventory Disclosure [Abstract]
Components of Inventories	Inventories consist of the following:
	(in thousands)	As of		As of
		March 31, 2015		December 31, 2014
	Finished products	$	7,899	$	4,875
	Raw materials		17,151		17,010
	Supplies and other		7,870		7,679
	Total inventories	$	32,920	$	29,564

Property_Plant_and_Equipment_T

Property, Plant and Equipment (Tables)	3 Months Ended
	Mar. 31, 2015
Property, Plant and Equipment [Abstract]
Components of Property, Plant and Equipment	Property, plant and equipment consist of the following:
		As of			As of
		March 31, 2015			December 31, 2014
	Land	$	12,927		$	12,930
	Buildings		111,782			111,506
	Plant machinery		269,940			269,633
	Mobile equipment		3,518			3,448
	Construction in progress		2,857			3,165
	Property, plant and equipment, at cost		401,024			400,682
	Accumulated depreciation		(55,906	)		(47,030	)
	Total property, plant and equipment, net	$	345,118		$	353,652

Software_and_Other_Intangibles1

Software and Other Intangibles (Tables)	3 Months Ended
	Mar. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Customer Relationships and Other Intangibles	Customer relationships and other intangibles consist of the following:
	(in thousands)	As of			As of
		March 31, 2015			December 31, 2014
	Customer relationships	$	116,663		$	117,243
	Purchased and internally developed Software		4,477			4,332
	Trademarks		14,833			14,905
	Customer relationships and other intangibles, at cost		135,973			136,480
	Accumulated amortization		(29,757	)		(25,671	)
	Customer relationships and other intangibles, net	$	106,216		$	110,809

Accrued_and_Other_Liabilities_

Accrued and Other Liabilities (Tables)	3 Months Ended
	Mar. 31, 2015
Payables and Accruals [Abstract]
Accrued and Other Liabilities	Accrued and other liabilities consist of the following:
	(in thousands)	As of		As of
		March 31, 2015		December 31, 2014
	Vacation and other employee-related costs	$	2,468		7,945
	VAT taxes		811		1,220
	Income taxes		—		—
	Long Term Incentive Plan funded by Lone Star		1,963		—
	Other		2,498		2,263
	Total accrued and other liabilities	$	7,740	$	11,428

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	3 Months Ended
	Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Future Minimum Lease Payments Due under Non-Cancelable Operating Leases	The table below shows the future minimum lease payments due under non-cancelable operating leases and purchase commitments at March 31, 2015:
	(in thousands)		Total		Remaining		2016		2017		2018		2019		2020		Thereafter
					2015
	Operating leases (1)		$	5,934	$	1,321	$	1,320	$	1,183	$	616	$	1,494	$	—	$	—
	Purchase commitments			163,165		23,406		29,414		29,296		19,410		16,529		14,145		30,965
	Total commitments		$	169,099	$	24,727	$	30,734	$	30,479	$	20,026	$	18,023	$	14,145	$	30,965
	-1	Future minimum lease payments over the non-cancelable lease terms of the operating leases.

Debt_Tables

Debt (Tables)	3 Months Ended
	Mar. 31, 2015
Debt Disclosure [Abstract]
Summary of Debt	Debt consists of the following:
	(in thousands)	As of			As of
		March 31, 2015			December 31, 2014
	First Lien Credit Agreement maturing on August 28, 2020; interest rate of LIBOR (with a 1% floor) plus 3.00% at March 31, 2015 and 3.75% at March 31, 2014	$	341,988		$	351,988
	Less: Original issue discount (net of amortization)		(2,752	)		(2,863	)
	Total debt		339,236			349,125
	Less: Current portion of long-term debt		—			—
	Long-term debt	$	339,236		$	349,125
Summary of Future Minimum Principal Payments Due under First Lien Credit Agreement	The table below shows the future minimum principal payments due under the First Lien Credit Agreement.
	(in thousands)	Amount Due
	2015		—
	2016		—
	2017		—
	2018		—
	2019		—
	Thereafter	$	341,988

Segment_Reporting_Tables

Segment Reporting (Tables)	3 Months Ended
	Mar. 31, 2015
Segment Reporting [Abstract]
Summary of Reportable Segment Information	Reportable segment information consists of the following:
	(in thousands)	Three Months			Three Months
		Ended			Ended
		March 31, 2015			March 31, 2014
	Net Sales:
	Wallboard		88,743			82,918
	Other		3,433			4,055
	Total net sales		92,176			86,973
	Operating income (loss):
	Wallboard		7,778			6,356
	Other		124			(75	)
	Total operating income (loss)		7,902			6,281
	Adjustments:
	Interest Expense		(4,221	)		(14,176	)
	Gain (loss) from Equity Investment		59			—
	Other non-operating expenses		(448	)		(5,186	)
	Income (loss) before income tax benefit		3,292			(13,081	)
	Depreciation and Amortization
	Wallboard		12,835			13,583
	Other		294			300
	Total depreciation and amortization		13,129			13,883

ShareBased_Compensation_Tables

Share-Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Summary of Restricted Shares activity	The following table summarizes RSA, RSU and PRSU activity for the three months ending March 31, 2015:
		Number of RSAs			Number of RSUs		Number of PRSUs		Weighted Average
									Grant Date Value
	Non-Vested, December 31, 2014		55,000			—		—	$	14
	Granted		—			62,070		40,050	$	21.07
	Forfeited		(1,500	)		—		—	$	14
	Vested		(13,750	)		—		—	$	14
	Non-Vested, March 31, 2015		39,750			62,070		40,050	$	19.09
Summary of Stock Option Activity	The following table summarizes stock option activity for the three months ending March 31, 2015:
		Number of			Weighted		Aggregate		Weighted
		Shares			Average		Intrinsic Value		Average
					Exercise				Remaining
					Price				Contractual
									Term (in Years)
	Oustanding, January 1, 2015		142,000		$	14
	Granted		—			—
	Forefeited		(1,444	)	$	14
	Exercised		—			—
	Outstanding, March 31, 2015		140,556		$	14	$	1,207,376		8.86
	Exercisable, March 31, 2015		80,500		$	14	$	691,495		8.86
	Vested and Expected to Vest, March 31, 2015		140,556		$	14	$	1,207,376		8.86

Earnings_Loss_Per_Share_Tables

Earnings (Loss) Per Share (Tables)	3 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
Schedule of Earnings (Loss) Per Share	Earnings (Loss) Per Share
	(in thousands, except per share data)	Three Months		Three Months
		Ended		Ended
		March 31, 2015		March 31, 2014
	Net income (loss)(in thousands)	$	2,020	$	(8,623	)
	Weighted average shares outstanding - basic		44,077		39,494
	Dilutive effect of stock options		16		—
	Weighted average shares outstanding - diluted		44,093		39,494
	Net income per common share:
	Basic	$	0.05	$	(0.22	)
	Diluted	$	0.05	$	(0.22	)

Background_and_Nature_of_Opera1

Background and Nature of Operations - Additional Information (Detail) (USD $)	0 Months Ended			3 Months Ended	0 Months Ended
In Millions, except Share data, unless otherwise specified	Feb. 10, 2014	Feb. 03, 2014	Jun. 24, 2013	Mar. 31, 2015	Mar. 18, 2015
Description Of Business And Significant Accounting Policies [Line Items]
Net proceeds after underwriting discounts and commissions	$154
One-time payment to Lone Star for termination of asset advisory agreement	2
Stock split ratio		32,304
Lafarge N.A. [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Agreement date of acquisition				24-Jun-13
Total purchase price			703
Closing date of acquisition				30-Aug-13
Wallboard Plant [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Number of operating facilities				3
Compound Plant [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Number of operating facilities				1
Initial Public Offering [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Shares issued at public offering	11,765,000
Per share value	$14
Secondary Public Offering [Member] | LSF8 Gypsum Holdings, L.P. [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Shares issued at public offering					5,000,000
Secondary Public Offering [Member] | LSF8 Gypsum Holdings, L.P. [Member] | Long Term Incentive Plan [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Compensation payments				4.2
Second Lien Credit Agreement [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Net proceeds from Initial Public Offering	152
Cash on hand	6.1
Repayment amount	155
Prepayment premium	$3.10

Receivables_Components_of_Rece

Receivables - Components of Receivables (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Receivables [Abstract]
Trade receivables	$39,979	$42,460
Total allowances	-1,926	-2,308
Total receivables, net	$38,053	$40,152

Inventories_Components_of_Inve

Inventories - Components of Inventories (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Inventory Disclosure [Abstract]
Finished products	$7,899	$4,875
Raw materials	17,151	17,010
Supplies and other	7,870	7,679
Total inventories	$32,920	$29,564

Property_Plant_and_Equipment_C

Property, Plant and Equipment - Components of Property, Plant and Equipment (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	$401,024	$400,682
Accumulated depreciation	-55,906	-47,030
Total property, plant and equipment, net	345,118	353,652
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	12,927	12,930
Buildings [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	111,782	111,506
Plant Machinery [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	269,940	269,633
Mobile Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	3,518	3,448
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	$2,857	$3,165

Property_Plant_and_Equipment_A

Property, Plant and Equipment - Additional Information (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Property, Plant and Equipment [Abstract]
Depreciation expense	$8.90	$8.80

Software_and_Other_Intangibles2

Software and Other Intangibles - Customer Relationships and Other Intangibles (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Finite-Lived Intangible Assets [Line Items]
Customer relationships and other intangibles, at cost	$135,973	$136,480
Accumulated amortization	-29,757	-25,671
Customer relationships and other intangibles, net	106,216	110,809
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Customer relationships and other intangibles, at cost	116,663	117,243
New ERP Software [Member]
Finite-Lived Intangible Assets [Line Items]
Customer relationships and other intangibles, at cost	4,477	4,332
Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Customer relationships and other intangibles, at cost	$14,833	$14,905

Software_and_Other_Intangibles3

Software and Other Intangibles - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Amortization expense	$4,200,000	$5,100,000
New ERP Software [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization expense	$400,000	$0
Amortization on estimated useful life	3 years
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets amortization period	15 years
Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets amortization period	15 years

Accrued_and_Other_Liabilities_1

Accrued and Other Liabilities - Accrued and Other Liabilities (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Payables and Accruals [Abstract]
Vacation and other employee-related costs	$2,468	$7,945
VAT taxes	811	1,220
Income taxes	0	0
Long Term Incentive Plan funded by Lone Star	1,963
Other	2,498	2,263
Total accrued and other liabilities	$7,740	$11,428

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Valuation allowance	$400,000	$400,000
Estimated effective tax rate	38.00%
Discrete tax items recognize	$0

Commitments_and_Contingencies_1

Commitments and Contingencies - Additional Information (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Total expenses under operating leases	$1.10	$1.40
Outstanding amount of letters of credit	$3.60		$4.80

Commitments_and_Contingencies_2

Commitments and Contingencies - Future Minimum Lease Payments Due under Non-Cancelable Operating Leases (Detail) (USD $)	Mar. 31, 2015
In Thousands, unless otherwise specified
Commitments and Contingencies Disclosure [Abstract]
Operating leases, Total	$5,934
Operating leases, Remaining 2015	1,321
Operating leases, 2016	1,320
Operating leases, 2017	1,183
Operating leases, 2018	616
Operating leases, 2019	1,494
Operating leases, 2020	0
Operating leases, After 2020	0
Purchase commitments, Total	163,165
Purchase commitments, Remaining 2015	23,406
Purchase commitments, 2016	29,414
Purchase commitments, 2017	29,296
Purchase commitments, 2018	19,410
Purchase commitments, 2019	16,529
Purchase commitments, 2020	14,145
Purchase commitments, After 2020	30,965
Total commitments	169,099
Total commitments, Remaining 2015	24,727
Total commitments, 2016	30,734
Total commitments, 2017	30,479
Total commitments, 2018	20,026
Total commitments, 2019	18,023
Total commitments, 2020	14,145
Total commitments, After 2020	$30,965

Related_Party_Transactions_Add

Related Party Transactions - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2015	Nov. 30, 2014	Mar. 31, 2014	Aug. 30, 2013
LSF8 Gypsum Holdings, L.P. [Member] | Long Term Incentive Plan [Member] | Secondary Public Offering [Member]
Related Party Transaction [Line Items]
Incentive payments	$4,200,000
Lafarge N.A. [Member]
Related Party Transaction [Line Items]
Payment for services per month		129,700
Termination of agreement period	31-Dec-14
Lone Star [Member]
Related Party Transaction [Line Items]
Percentage of actual cost paid for the services				110.00%
Termination fee included non-operating expense			$2,000,000

Investment_in_Seven_Hills_Addi

Investment in Seven Hills - Additional Information (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Investments in and Advances to Affiliates, Schedule of Investments [Abstract]
Cost of paperboard	$11.10	$12.90
Purchase commitments	$39.60

Fair_Value_Measurements_Additi

Fair Value Measurements - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value adjustments for assets and liabilities	$0
Fair Value, Inputs, Level 2 [Member] | Interest Rate Cap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of interest rate cap	0	30,000
Fair Value, Inputs, Level 2 [Member] | Natural Gas Hedges [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of derivatives hedges, net of tax	-800,000	-900,000
Fair value of derivatives hedges, tax	($500,000)	($500,000)

Debt_Summary_of_Debt_Detail

Debt - Summary of Debt (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Debt Instrument [Line Items]
Less: Original issue discount (net of amortization)	($2,752)	($2,863)
Total debt	339,236	349,125
Less: Current portion of long-term debt	0	0
Long-term debt	339,236	349,125
Total debt	339,236	349,125
First Lien Credit Agreement [Member] | Term Loan Facility [Member]
Debt Instrument [Line Items]
Long-term debt before unamortized discount	$341,988	$351,988

Debt_Summary_of_Debt_Parenthet

Debt - Summary of Debt (Parenthetical) (Detail)	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Floor rate	1.00%
First Lien Credit Agreement [Member]
Debt Instrument [Line Items]
Debt, maturity date	28-Aug-20
Floor rate	1.00%
Term Loan Facility [Member] | First Lien Credit Agreement [Member]
Debt Instrument [Line Items]
Debt, maturity date	28-Aug-20	28-Aug-20
Floor rate	1.00%	1.00%
Term Loan Facility [Member] | First Lien Credit Agreement [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Debt, variable interest rate	3.00%	3.75%

Debt_Additional_Information_De

Debt - Additional Information (Detail) (USD $)	1 Months Ended	3 Months Ended			12 Months Ended	0 Months Ended
	31-May-14	Mar. 31, 2015	Sep. 30, 2014	Mar. 31, 2014	Dec. 31, 2014	Feb. 10, 2014	Aug. 30, 2013
Debt Instrument [Line Items]
Original issue discount write-off		$547,000		$7,526,000
Floor rate		1.00%
Reduction in margin, percentage	0.50%
Further reduction in margin, percentage			0.25%
Remaining outstanding		46,400,000
Cash interest paid		3,500,000		6,600,000
Outstanding amount of letters of credit		3,600,000			4,800,000
Leverage ratio		6
Moody's, B2 Rating [Member]
Debt Instrument [Line Items]
Debt, variable interest rate		3.00%
Maximum [Member]
Debt Instrument [Line Items]
Outstanding amount of letters of credit		12,500,000
First Lien Credit Agreement [Member]
Debt Instrument [Line Items]
Revolver amount							50,000,000
Floor rate		1.00%
Pre-paid principal payments		10,000,000
Final payment		342,000,000
Credit agreement due date		28-Aug-20
Effective interest rate		4.70%
Outstanding revolver amount		0
Basis points		2.25%
Facility fee, basis points		0.50%
First Lien Credit Agreement [Member] | Maximum [Member]
Debt Instrument [Line Items]
Debt, variable interest rate	3.75%
First Lien Credit Agreement [Member] | Minimum [Member]
Debt Instrument [Line Items]
Debt, variable interest rate	3.25%
First Lien Credit Agreement [Member] | Term Loan Facility [Member]
Debt Instrument [Line Items]
Line of credit facility borrowing capacity							415,000,000
Floor rate		1.00%			1.00%
Credit agreement due date		28-Aug-20			28-Aug-20
First Lien Credit Agreement [Member] | U.S. Dollar Revolving Loan Facility [Member]
Debt Instrument [Line Items]
Line of credit facility borrowing capacity							40,000,000
First Lien Credit Agreement [Member] | Canadian Dollar and/or U.S. Dollar Revolving Facility [Member]
Debt Instrument [Line Items]
Line of credit facility borrowing capacity							10,000,000
Second Lien Credit Agreement [Member]
Debt Instrument [Line Items]
Net proceeds from the Initial Public Offering						152,000,000
Cash on hand						6,100,000
Prepayment premium						3,100,000
Repayment amount						155,000,000
Original issue discount write-off						6,900,000
Second Lien Credit Agreement [Member] | Term Loan Facility [Member]
Debt Instrument [Line Items]
Line of credit facility borrowing capacity							$155,000,000

Debt_Summary_of_Future_Minimum

Debt - Summary of Future Minimum Principal Payments Due under First Lien Credit Agreement (Detail) (USD $)	Mar. 31, 2015
In Thousands, unless otherwise specified
Maturities of Long-term Debt [Abstract]
2015	$0
2016	0
2017	0
2018	0
2019	0
Thereafter	$341,988

Derivative_Instruments_Additio

Derivative Instruments - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2015
Derivative [Line Items]
Net unrealized loss recognized in accumulated other comprehensive income (loss)	$93,000
Derivatives, net liability position	800,000
Collateral posted with counterparties related to derivatives	0
Commodity Contract [Member]
Derivative [Line Items]
Aggregate notional amount of outstanding natural gas swap contracts	1,125,000
Derivative instrument contracts maturity date	31-Oct-15
Net unrealized loss recognized in accumulated other comprehensive income (loss)	800,000
Net unrealized loss recognized in accumulated other comprehensive income (loss), tax amount	500,000
Gains recognized in other comprehensive income, before tax	100,000
Other current liabilities	800,000
Interest Rate Cap [Member]
Derivative [Line Items]
Notional amount	204,400,000
Reduction in notional amount of interest rate cap	500,000
Percentage of notional amount outstanding	59.80%
Loss due to changes in time value of option reflected in earnings	30,000
Fair value of option of interest rate cap	$0
Interest Rate Cap [Member] | London Interbank Offered Rate (LIBOR) [Member]
Derivative [Line Items]
Interest rate cap	2.00%
Maximum [Member]
Derivative [Line Items]
Derivative instruments maximum hedging period	2 years

Segment_Reporting_Additional_I

Segment Reporting - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Segment Reporting Information [Line Items]
Number of geographical areas	2
Wallboard [Member] | Sales Revenue, Net [Member]
Segment Reporting Information [Line Items]
Percentage of revenues	96.00%	95.00%

Segment_Reporting_Summary_of_R

Segment Reporting - Summary of Reportable Segment Information (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Net Sales:
Total net sales	$92,176	$86,973
Operating income (loss):
Operating income (loss)	7,902	6,281
Adjustments:
Interest Expense	-4,221	-14,176
Gain (loss) from Equity Investment	59
Other non-operating expenses	-448	-5,186
Income (loss) before income tax	3,292	-13,081
Depreciation and Amortization
Total depreciation and amortization	13,129	13,883
Wallboard [Member]
Net Sales:
Total net sales	88,743	82,918
Operating income (loss):
Operating income (loss)	7,778	6,356
Depreciation and Amortization
Total depreciation and amortization	12,835	13,583
Other [Member]
Net Sales:
Total net sales	3,433	4,055
Operating income (loss):
Operating income (loss)	124	-75
Depreciation and Amortization
Total depreciation and amortization	$294	$300

ShareBased_Compensation_Additi

Share-Based Compensation - Additional Information (Detail) (USD $)	0 Months Ended		3 Months Ended	0 Months Ended
	Feb. 18, 2015	Feb. 10, 2014	Mar. 31, 2015	Mar. 02, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options granted		142,000	0
Vesting period		4 years
Risk free interest rate		2.15%
Dividend yield		0.00%
Volatility assumption		50.34%
Expected life		6 years 3 months
Unearned compensation expense related to stock options yet to be recognized			$400,000
Unearned compensation expense, weighted average remaining period			3 years
Compensation expense			100,000
ESPP offering period	12 months
ESPP offering period, start date			1-May-15
Employee contribution to ESPP through payroll deductions, maximum percentage	10.00%
Employee contribution to ESPP through payroll deductions, maximum amount per employee	10,000
Vest After One Year [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares				7,580
Vest Over Four Year Period [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares				54,490
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Sale of shares under ESPP	$600,000
Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares		75,000
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares			62,070	62,070
Performance Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares			40,050	40,050
Performance Restricted Stock Units [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of PRSU earned				0.00%
Performance Restricted Stock Units [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of PRSU earned				200.00%

ShareBased_Compensation_Summar

Share-Based Compensation - Summary of Restricted Shares Activity (Detail) (USD $)	0 Months Ended	3 Months Ended	0 Months Ended
	Feb. 10, 2014	Mar. 31, 2015	Mar. 02, 2015
Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Non-vested, Beginning balance		55,000
Number of Shares, Non-vested, Granted	75,000
Number of Shares, Non-vested, Forfeited		-1,500
Number of Shares, Non-vested, Vested		-13,750
Number of Shares, Non-vested, Ending balance		39,750
Weighted Average Grant Date Value, Beginning balance		$14
Weighted Average Grant Date Value, Granted		$21.07
Weighted Average Grant Date Value, Forfeited		$14
Weighted Average Grant Date Value, Vested		$14
Weighted Average Grant Date Value, Ending balance		$19.09
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Non-vested, Granted		62,070	62,070
Number of Shares, Non-vested, Ending balance		62,070
Performance Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Non-vested, Granted		40,050	40,050
Number of Shares, Non-vested, Ending balance		40,050

ShareBased_Compensation_Summar1

Share-Based Compensation - Summary of Stock Option Activity (Detail) (USD $)	0 Months Ended	3 Months Ended
	Feb. 10, 2014	Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Number of Shares, Outstanding, Beginning balance		142,000
Number of Shares, Granted	142,000	0
Number of Shares, Forfeited		-1,444
Number of Shares, Exercised		0
Number of Shares, Outstanding, Ending balance		140,556
Number of Shares, Exercisable		80,500
Number of Shares, Vested and Expected to Vest		140,556
Weighted Average Exercise Price, Outstanding, Beginning Balance		$14
Weighted Average Exercise Price, Granted		$0
Weighted Average Exercise Price, Forfeited		$14
Weighted Average Exercise Price, Exercised		$0
Weighted Average Exercise Price, Outstanding, Ending Balance		$14
Weighted Average Exercise Price, Exercisable		$14
Weighted Average Exercise Price, Vested and Expected to Vest		$14
Aggregate Intrinsic Value, Outstanding		$1,207,376
Aggregate Intrinsic Value, Exercisable		691,495
Aggregate Intrinsic Value, Vested and Expected to Vest		$1,207,376
Weighted Average Remaining Contractual Term (in Years), Outstanding		8 years 10 months 10 days
Weighted Average Remaining Contractual Term (in Years), Exercisable		8 years 10 months 10 days
Weighted Average Remaining Contractual Term (in Years), Vested and Expected to Vest		8 years 10 months 10 days

Earnings_Loss_Per_Share_Additi

Earnings (Loss) Per Share - Additional Information (Detail)	0 Months Ended
	Feb. 03, 2014	Jan. 01, 2014	Feb. 10, 2014
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Stock split ratio	32,304
Stock Split [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Stock split ratio		32,304
Initial Public Offering [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Issuance of new shares			11,765,000

Earnings_Loss_Per_Share_Schedu

Earnings (Loss) Per Share - Schedule of Earnings (Loss) Per Share (Detail) (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Earnings Per Share [Abstract]
Net income (loss)	$2,020	($8,623)
Weighted average shares outstanding - basic	44,076,513	39,493,722
Dilutive effect of stock options	16,000
Weighted average shares outstanding - diluted	44,092,900	39,493,722
Net income per common share:
Basic	$0.05	($0.22)
Diluted	$0.05	($0.22)