Summit Materials 10-Q 6 Aug 14 2014 Q2 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	6 Months Ended
	Jun. 28, 2014	Aug. 05, 2014
Document And Entity Information [Abstract]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	28-Jun-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q2	'
Entity Registrant Name	'Summit Materials, LLC	'
Entity Central Index Key	'0001571371	'
Current Fiscal Year End Date	'--12-27	'
Entity Filer Category	'Non-accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	0

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Jun. 28, 2014	Dec. 28, 2013
In Thousands, unless otherwise specified
Current assets:	'	'
Cash	$20,802	$14,917
Accounts receivable, net	143,768	99,337
Costs and estimated earnings in excess of billings	21,779	10,767
Inventories	119,171	96,432
Other current assets	13,235	13,181
Total current assets	318,755	234,634
Property, plant and equipment, less accumulated depreciation, depletion and amortization (June 28, 2014-$246,098 and December 28, 2013-$212,382)	920,513	831,778
Goodwill	317,323	127,038
Intangible assets, less accumulated amortization (June 28, 2014-$2,577 and December 28, 2013-$2,192)	15,275	15,147
Other assets	45,774	39,197
Total assets	1,617,640	1,247,794
Current liabilities:	'	'
Current portion of debt	69,220	30,220
Current portion of acquisition-related liabilities	19,039	10,635
Accounts payable	78,244	72,104
Accrued expenses	87,913	57,251
Billings in excess of costs and estimated earnings	4,902	9,263
Total current liabilities	259,318	179,473
Long-term debt	938,290	658,767
Acquisition-related liabilities	40,947	23,756
Other noncurrent liabilities	83,415	77,480
Total liabilities	1,321,970	939,476
Commitments and contingencies (see note 9)	'	'
Redeemable noncontrolling interest	26,825	24,767
Member's interest:	'	'
Member's equity	512,297	486,896
Accumulated deficit	-239,213	-198,511
Accumulated other comprehensive loss	-5,472	-6,045
Member's interest	267,612	282,340
Noncontrolling interest	1,233	1,211
Total member's interest	268,845	283,551
Total liabilities, redeemable noncontrolling interest and member's interest	$1,617,640	$1,247,794

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Jun. 28, 2014	Dec. 28, 2013
In Thousands, unless otherwise specified
Statement Of Financial Position [Abstract]	'	'
Property, plant and equipment, accumulated depreciation, depletion and amortization	$246,098	$212,382
Intangible assets, accumulated amortization	$2,577	$2,192

Consolidated_Statements_of_Ope

Consolidated Statements of Operations (Unaudited) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013
Revenue:	'	'	'	'
Product	$225,808	$169,041	$329,769	$237,181
Service	98,487	85,801	145,617	124,490
Total revenue	324,295	254,842	475,386	361,671
Cost of revenue (excluding items shown separately below):	'	'	'	'
Product	155,984	115,960	245,003	181,932
Service	75,778	65,883	115,434	95,984
Total cost of revenue	231,762	181,843	360,437	277,916
General and administrative expenses	34,867	39,392	70,355	73,395
Depreciation, depletion, amortization and accretion	21,339	18,894	40,695	36,026
Transaction costs	2,405	982	4,996	2,464
Operating income (loss)	33,922	13,731	-1,097	-28,130
Other (income) expense, net	-697	-269	-891	163
Loss on debt financings	'	'	'	3,115
Interest expense	21,651	14,482	40,470	27,849
Income (loss) from continuing operations before taxes	12,968	-482	-40,676	-59,257
Income tax benefit	-864	-726	-1,460	-3,347
Income (loss) from continuing operations	13,832	244	-39,216	-55,910
(Income) loss from discontinued operations	-369	-26	-349	97
Net income (loss)	14,201	270	-38,867	-56,007
Net income (loss) attributable to noncontrolling interest	1,946	1,939	-569	-1,518
Net income (loss) attributable to member of Summit Materials, LLC	$12,255	($1,669)	($38,298)	($54,489)

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (Loss) (Unaudited) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013
Statement Of Income And Comprehensive Income [Abstract]	'	'	'	'
Net income (loss)	$14,201	$270	($38,867)	($56,007)
Other comprehensive (loss) income:	'	'	'	'
Postretirement curtailment adjustment	'	'	-1,346	'
Postretirement liability adjustment	'	'	2,164	'
Other comprehensive income	'	'	818	'
Comprehensive income (loss)	14,201	270	-38,049	-56,007
Less comprehensive income (loss) attributable to the noncontrolling interest	1,946	1,939	-324	-1,518
Comprehensive income (loss) attributable to member of Summit Materials, LLC	$12,255	($1,669)	($37,725)	($54,489)

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (Unaudited) (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 28, 2014	Jun. 29, 2013
Cash flow from operating activities:	'	'
Net loss	($38,867)	($56,007)
Adjustments to reconcile net loss to net cash used in operating activities:	'	'
Depreciation, depletion, amortization and accretion	43,296	37,404
Financing fee amortization	470	1,629
Share-based compensation expense	1,138	1,114
Deferred income tax benefit	-525	-2,969
Net (gain) loss on asset disposals	-76	5,574
Loss on debt financings	'	2,989
Other	559	755
(Increase) decrease in operating assets, net of acquisitions:	'	'
Account receivable, net	-28,917	-11,610
Inventories	-17,820	-13,222
Costs and estimated earnings in excess of billings	-10,246	-13,688
Other current assets	-2,128	-491
Other assets	2,214	-118
Increase (decrease) in operating liabilities, net of acquisitions:	'	'
Accounts payable	3,589	6,691
Accrued expenses	8,511	-4,722
Billings in excess of costs and estimated earnings	-4,361	-1,493
Other liabilities	-2,717	404
Net cash used for operating activities	-45,880	-47,760
Cash flow from investing activities:	'	'
Acquisitions, net of cash acquired	-234,870	-60,779
Purchases of property, plant and equipment	-49,260	-40,528
Proceeds from the sale of property, plant and equipment	5,985	7,086
Other	757	'
Net cash used for investing activities	-277,388	-94,221
Cash flow from financing activities:	'	'
Proceeds from investment by member	24,350	'
Proceeds from debt issuances	424,750	189,681
Payments on long-term debt	-109,246	-61,343
Payments on acquisition-related liabilities	-4,259	-3,426
Financing costs	-6,354	-2,707
Other	-88	'
Net cash provided by financing activities	329,153	122,205
Net increase (decrease) in cash	5,885	-19,776
Cash-beginning of period	14,917	27,431
Cash-end of period	$20,802	$7,655

Consolidated_Statements_of_Cha

Consolidated Statements of Changes in Redeemable Noncontrolling Interest and Member's Interest (Unaudited) (USD $)

6 Months Ended

6 Months Ended

In Thousands, unless otherwise specified

Jun. 28, 2014

Jun. 29, 2013

Jun. 28, 2014

Jun. 29, 2013

Jun. 28, 2014

Jun. 29, 2013

Jun. 28, 2014

Jun. 29, 2013

Dec. 31, 2012

Jun. 28, 2014

Jun. 29, 2013

Jun. 28, 2014

Jun. 29, 2013

Redeemable Noncontrolling Interest [Member]

Redeemable Noncontrolling Interest [Member]

Member's Equity [Member]

Member's Equity [Member]

Accumulated Deficit [Member]

Accumulated Deficit [Member]

Accumulated Other Comprehensive Loss [Member]

Accumulated Other Comprehensive Loss [Member]

Accumulated Other Comprehensive Loss [Member]

Noncontrolling Interest [Member]

Noncontrolling Interest [Member]

Total Member's Interest [Member]

Total Member's Interest [Member]

Beginning Balance

'

'

$486,896

$484,584

($198,511)

($94,085)

($6,045)

($9,130)

($9,130)

$1,211

$1,059

$283,551

$382,428

Beginning Balance

24,767

22,850

'

'

'

'

'

'

'

'

'

'

'

Contributed capital

'

'

24,350

'

'

'

'

'

'

'

'

24,350

'

Accretion/ redemption value adjustment

2,404

1,788

'

'

-2,404

-1,788

'

'

'

'

'

-2,404

-1,788

Net (loss) income

-591

-1,488

'

'

-38,298

-54,489

'

'

'

22

-30

-38,276

-54,519

Other comprehensive income

245

'

'

'

'

'

573

'

'

'

'

573

'

Share-based compensation

'

'

1,051

1,114

'

'

'

'

'

'

'

1,051

1,114

Ending Balance

'

'

512,297

485,698

-239,213

-150,362

-5,472

-9,130

-9,130

1,233

1,029

268,845

327,235

Ending Balance

$26,825

$23,150

'

'

'

'

'

'

'

'

'

'

'

Summary_of_Organization_and_Si

Summary of Organization and Significant Accounting Policies	6 Months Ended
	Jun. 28, 2014
Accounting Policies [Abstract]	'
Summary of Organization and Significant Accounting Policies	'
	1	SUMMARY OF ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES
	Summit Materials, LLC (“Summit Materials”) is a vertically integrated construction materials company. Across its subsidiaries, it is engaged in the production and sale of aggregates, cement, ready-mixed concrete, asphalt paving mix and concrete products. Summit Materials, through its subsidiaries (collectively, the “Company”), owns and operates quarries, sand and gravel pits, a cement plant, cement distribution terminals, ready-mixed concrete plants, asphalt plants and landfill sites. It is also engaged in paving and related services. The Company is organized by geographic region and has three operating segments, which are also its reporting segments: the West; Central; and East regions.
	Summit Materials is a wholly owned indirect subsidiary of Summit Materials Holdings L.P., whose major indirect owners are certain investment funds affiliated with Blackstone Capital Partners V L.P. and Silverhawk Summit, L.P.
	The consolidated financial statements of the Company include the accounts of Summit Materials and its wholly and non-wholly owned subsidiaries. All significant intercompany balances and transactions have been eliminated.
	Basis of Presentation—These consolidated financial statements were prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) for interim financial information, without audit, pursuant to the rules and regulations of the Securities and Exchange Commission. Certain information and footnote disclosures typically included in financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. These unaudited consolidated financial statements should be read in conjunction with the Company’s audited consolidated financial statements and the notes thereto as of and for the year ended December 28, 2013. The Company continues to follow the accounting policies set forth in those consolidated financial statements. Management believes that these consolidated interim financial statements include all adjustments, normal and recurring in nature, that are necessary to present fairly the financial position of the Company as of June 28, 2014, the results of operations for the three and six month periods ended June 28, 2014 and June 29, 2013 and cash flows for the six month periods ended June 28, 2014 and June 29, 2013.
	The Company’s fiscal year is based on a 52-53 week year with each quarter composed of 13 weeks ending on a Saturday. The 53 week year occurs approximately once every seven years. The additional week in the 53 week year will be included in the fourth quarter. The Company’s second quarter ended on June 28 and June 29 in 2014 and 2013, respectively. In 2013, Continental Cement Company, L.L.C. (“Continental Cement”), an indirect majority owned subsidiary of Summit Materials, changed its fiscal year to be consistent with the Company’s fiscal year. Prior to fiscal 2013, Continental Cement’s fiscal year was based on the calendar year with quarter-end dates of March 31, June 30, September 30 and December 31. The effect of this change to the Company’s financial position, results of operations and liquidity is immaterial.
	Substantially all of the Company’s products and services are produced, consumed and performed outdoors, primarily in the spring, summer and fall. Seasonal changes and other weather-related conditions can affect the production and sales volumes of its products and delivery of its services. Therefore, the financial results for any interim period are not necessarily indicative of the results expected for the full year. Furthermore, the Company’s sales and earnings are sensitive to national, regional and local economic conditions and to cyclical changes in construction spending, among other factors.
	Use of Estimates—Preparation of these consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions. These estimates and the underlying assumptions affect the amounts of assets and liabilities reported and the disclosures about contingent assets and liabilities and reported amounts of revenue and expenses. Such estimates include the valuation of accounts receivable, inventories, goodwill, intangibles and other long-lived assets, pension and other postretirement obligations and asset retirement obligations. Estimates also include revenue earned on contracts and costs to complete contracts; most of the Company’s construction work is performed under fixed unit-price contracts with state and local governmental entities. Management regularly evaluates its estimates and assumptions based on historical experience and other factors, including the current economic environment. Management adjusts such estimates and assumptions when circumstances dictate. As future events and their effects cannot be determined with precision, actual results can differ significantly from estimates made. Changes in estimates, including those resulting from continuing changes in the economic environment, are reflected in the Company’s consolidated financial statements during the period in which the change in estimate occurs.
	Business and Credit Concentrations—The Company’s operations are conducted primarily across 17 states, with the most significant revenue generated in Texas, Kansas, Kentucky, Utah and Missouri. The Company’s accounts receivable consist primarily of amounts due from customers within these areas. Therefore, collection of these accounts is dependent on the economic conditions in the aforementioned states, as well as specific situations affecting individual customers. Credit granted within the Company’s trade areas has been granted to many customers, and management does not believe that any significant concentrations of credit exist with respect to individual customers or groups of customers. No single customer accounted for more than 10% of total revenue in the three or six month periods ended June 28, 2014 and June 29, 2013.
	Fair Value Measurements—Certain acquisitions made by the Company require the payment of contingent amounts of purchase consideration. These payments are contingent on specified operating results being achieved in periods subsequent to the acquisition and will not be made if earn-out thresholds are not achieved. Contingent consideration obligations are measured at fair value each reporting period, and any adjustments to fair value are recognized in earnings in the period identified. As of June 28, 2014 and December 28, 2013, contingent consideration obligations of $3.6 million and $1.9 million were included in the non-current portion of acquisition-related liabilities and, as of June 28, 2014, $2.5 million was included in the current portion of acquisition related liabilities. The $4.2 million increase in contingent consideration obligations relates to the January 17, 2014 acquisition of Alleyton Resource Corporation, Colorado Gulf, LP and certain assets of Barten Shepard Investments, LP (collectively, “Alleyton”).
	The fair value of the contingent consideration obligations approximated their carrying value of $6.1 million and $1.9 million as of June 28, 2014 and December 28, 2013, respectively. The fair values are based on unobservable, or Level 3, inputs, including projected probability-weighted cash payments and an 11.0% discount rate, which reflects a market discount rate. Changes in fair value may occur as a result of a change in actual or projected cash payments, the probability weightings applied by the Company to projected payments or a change in the discount rate. Significant increases or decreases in any of these inputs in isolation could result in a lower, or higher, fair value measurement. There were no material valuation adjustments to contingent consideration obligations in the three or six month periods ended June 28, 2014 or June 29, 2013.
	Financial Instruments—The Company’s financial instruments include certain acquisition-related liabilities (deferred consideration and noncompete obligations) and debt. The fair value of the deferred consideration and noncompete obligations approximate their carrying value of $46.9 million and $6.9 million, respectively, as of June 28, 2014, and $28.3 million and $4.2 million, respectively, as of December 28, 2013. The $21.3 million increase in the deferred consideration and noncompete obligations primarily relate to the acquisitions completed in 2014. The fair value was determined based on unobservable, or Level 3 inputs, including the cash payment terms in the purchase agreements and a discount rate reflecting the Company’s credit risk.
	The fair value of long-term debt approximated $990.8 million and $696.5 million as of June 28, 2014 and December 28, 2013, respectively, compared to its carrying value of $927.8 million and $663.0 million, respectively. Fair value was determined based on observable, or Level 2 inputs, such as interest rates, bond yields and quoted prices in inactive markets.
	Redeemable Noncontrolling Interest—The Company owns all of the outstanding Class A Units of Continental Cement, which represent a 69.7% economic interest. Continental Cement’s Class B Units, which represent a 30.3% economic interest, are subordinate to the Class A Units. The Class B Units can be put to Continental Cement in the future based on the passage of time, which can be accelerated upon the occurrence of a contingent event; therefore, the noncontrolling interest of the Class B unit holders is classified in temporary equity. The redemption value was based upon the estimated fair value of Continental Cement at the date of acquisition and the Company has elected to accrete changes in the redemption value of the noncontrolling interest over the period from the date of issuance to the earliest anticipated redemption date, which is currently May 2016. The accretion is recognized through an adjustment to accumulated deficit. The redemption value of the redeemable noncontrolling interest as of June 28, 2014 and December 28, 2013 approximated its carrying value.

Acquisitions

Acquisitions	6 Months Ended
	Jun. 28, 2014
Business Combinations [Abstract]	'
Acquisitions	'
	2	ACQUISITIONS
	The Company completed a number of immaterial acquisitions during 2014 and 2013. The operating results of the acquired businesses have been included in the Company’s results of operations since the respective dates of the acquisitions. Assets acquired and liabilities assumed are measured at their acquisition-date fair value. Goodwill recognized in connection with the Company’s acquisitions is primarily attributable to the expected profitability, assembled workforces and operational infrastructure of the acquired businesses and the synergies expected to result after integration of those acquired businesses. The purchase price allocation for the 2014 acquisitions has not been finalized due to the recent timing of the acquisitions.
	2014 Acquisitions
	West region
		•	On March 31, 2014, the Company acquired all of the stock of Troy Vines, Inc., an integrated aggregates and ready-mixed concrete business headquartered in Midland, Texas, which serves the Permian Basin region of West Texas. The acquisition was funded with cash on hand.
		•	On January 17, 2014, the Company acquired all of the membership interests of Alleyton Resource Corporation, Colorado Gulf, LP and certain assets of Barten Shepard Investments, LP, an aggregates and ready-mixed concrete business in Houston, Texas. The Alleyton acquisition was funded with a portion of the proceeds from the January 17, 2014 issue and sale of $260.0 million aggregate principal amount of 10.5% senior notes due 2020 by the Company.
	East region
		•	On June 9, 2014, the Company acquired all of the membership interests of Buckhorn Materials LLC, an aggregates quarry in South Carolina, and Construction Materials Group LLC, a sand pit in South Carolina. The acquisition was funded with borrowings under the Company’s revolving credit facility.
	2013 Acquisitions
	West region
		•	On April 1, 2013, the Company acquired all of the membership interests of Westroc, LLC, an aggregates and ready-mixed concrete provider near Salt Lake City, Utah, with borrowings under the Company’s revolving credit facility.
	Central region
		•	On April 1, 2013, the Company acquired certain aggregates, ready-mixed concrete and asphalt assets of Lafarge North America, Inc. in and around Wichita, Kansas, with borrowings under the Company’s revolving credit facility.

Goodwill

Goodwill	6 Months Ended
	Jun. 28, 2014
Goodwill And Intangible Assets Disclosure [Abstract]	'
Goodwill	'
	3	GOODWILL
	Changes in the carrying amount of goodwill, by reportable segment, from December 28, 2013 to June 28, 2014 are summarized as follows:
			West		Central		East		Total
	Balance, December 28, 2013		$	54,249	$	72,789	$	—	$	127,038
	Acquisitions			164,125		—		26,160		190,285
	Balance, June 28, 2014		$	218,374	$	72,789	$	26,160	$	317,323

Accounts_Receivable_Net

Accounts Receivable, Net	6 Months Ended
	Jun. 28, 2014
Receivables [Abstract]	'
Accounts Receivable, Net	'
	4	ACCOUNTS RECEIVABLE, NET
	Accounts receivable, net consisted of the following as of June 28, 2014 and December 28, 2013:
			June 28,			December 28,
			2014			2013
	Trade accounts receivable		$	131,026		$	85,188
	Retention receivables			14,185			15,966
	Receivables from related parties			1,262			202
	Accounts receivable			146,473			101,356
	Less: Allowance for doubtful accounts			(2,705	)		(2,019	)
	Accounts receivable, net		$	143,768		$	99,337
	Retention receivables are amounts earned by the Company but held by customers until paving and related service contracts and projects are near completion or fully completed. Amounts are expected to be billed and collected within one year.

Inventories

Inventories	6 Months Ended
	Jun. 28, 2014
Inventory Disclosure [Abstract]	'
Inventories	'
	5	INVENTORIES
	Inventories consisted of the following as of June 28, 2014 and December 28, 2013:
			June 28,		December 28,
			2014		2013
	Aggregate stockpiles		$	80,232	$	70,300
	Finished goods			14,104		11,207
	Work in process			4,629		2,623
	Raw materials			20,206		12,302
	Total		$	119,171	$	96,432

Accrued_Expenses

Accrued Expenses	6 Months Ended
	Jun. 28, 2014
Payables And Accruals [Abstract]	'
Accrued Expenses	'
	6	ACCRUED EXPENSES
	Accrued expenses consist of the following as of June 28, 2014 and December 28, 2013:
			June 28,		December 28,
			2014		2013
	Interest		$	27,633	$	16,456
	Payroll and benefits			16,066		16,368
	Capital lease obligations			13,528		2,068
	Insurance			8,212		7,445
	Taxes (1)			6,084		4,168
	Professional fees			2,177		2,352
	Other (2)			14,213		8,394
	Total		$	87,913	$	57,251
		-1	Consists primarily of real estate, personal property and sales taxes.
		-2	Consists primarily of subcontractor, management fee and working capital settlement accruals.

Debt

Debt	6 Months Ended
	Jun. 28, 2014
Debt Disclosure [Abstract]	'
Debt	'
	7	DEBT
	Debt consisted of the following as of June 28, 2014 and December 28, 2013:
			June 28,		December 28,
			2014		2013
	Revolver		$	65,000	$	26,000
	Long-term debt:
	$510.0 million senior notes, including a $17.3 million net premium at June 28, 2014 and $250 million senior notes, net of $4.0 million discount at December 28, 2013			527,319		245,971
	$417.8 million credit facility, term loan, net of $2.6 million and $2.9 million discount at June 28, 2014 and December 28, 2013, respectively			415,191		417,016
	Total			942,510		662,987
	Current portion of long-term debt			4,220		4,220
	Long-term debt		$	938,290	$	658,767
	The contractual payments of long-term debt, including current maturities, for the five years subsequent to June 28, 2014, are as follows:
	2014 (six months)		$	2,110
	2015			5,275
	2016			4,220
	2017			4,220
	2018			3,165
	2019			398,790
	Thereafter			510,000
	Total			927,780
	Plus: Original issue net premium			14,730
	Total debt		$	942,510
	Senior Notes—Summit Materials and its wholly-owned indirect subsidiary, Summit Materials Finance Corp. (“Finance Corp.” and, together with Summit Materials, the “Issuers”), are co-issuers of the 10.5% Senior Notes due January 31, 2020 (the “Senior Notes”) that have been issued under an indenture dated as of January 30, 2012 (as amended and supplemented, the “Indenture”). The Senior Notes bear interest at 10.5% per year, payable semi-annually in arrears. The Indenture contains covenants limiting, among other things, the ability of Summit Materials and its restricted subsidiaries to incur additional indebtedness or issue certain preferred shares, pay dividends, redeem stock or make other distributions, make certain investments, sell or transfer certain assets, create liens, consolidate, merge, sell or otherwise dispose of all or substantially all of the Company’s assets, enter into certain transactions with affiliates, and designate subsidiaries as unrestricted subsidiaries. The Indenture also contains customary events of default.
	The Issuers issued $250.0 million aggregate principal amount of Senior Notes (the “Existing Notes”) in January 2012. On January 17, 2014, the Issuers issued an additional $260.0 million aggregate principal amount of Senior Notes (the “Additional Notes”), receiving proceeds of $282.8 million, before payment of fees and expenses and including a $22.8 million premium. The proceeds from the sale of the Additional Notes were used for the purchase of Alleyton, to make payments on the Company’s Revolver (discussed and defined below) and for general corporate purposes. The Additional Notes are treated as a single series with the Existing Notes and have substantially the same terms as those of the Existing Notes. The Additional Notes and the Existing Notes vote as one class under the Indenture.
	Credit Facility—The Company has a senior secured credit facility (the “Credit Facility”) providing for term loans in an aggregate amount of $422.0 million (the “Term Debt”) and revolving credit commitments in an aggregate amount of $150.0 million (the “Revolver”). The Company is required to make principal repayments of 0.25% of borrowings under the Term Debt on the last business day of each March, June, September and December. The current outstanding principal amount of Term Debt and applicable interest rate reflect the terms of a repricing consummated by the Company in February 2013, which included additional borrowings of $25.0 million, an interest rate reduction of 1.0% and a deferral of the March 2013 principal payment. The unpaid principal balance of Term Debt is due in full on the maturity date, which is January 30, 2019. On January 16, 2014, the Credit Facility was amended to allow for the issuance of the Additional Notes.
	The Revolver matures on January 30, 2017 and bears interest per annum equal to an applicable margin of 3.25% plus, at the Company’s option, either (i) a base rate determined by reference to the highest of (a) the federal funds rate plus 0.50%, (b) the prime rate of Bank of America, N.A. and (c) the British Bankers Association London Interbank Offered Rate (“LIBOR”) plus 1.00% or (ii) a British Bankers Association LIBOR rate determined by reference to Reuters prior to the interest period relevant to such borrowing adjusted for certain additional costs. As of June 28, 2014, the borrowing capacity under the Revolver was $62.2 million, which is net of $22.8 million of outstanding letters of credit. The outstanding letters of credit are renewed annually and support required bonding on construction projects and the Company’s insurance liabilities.
	The Company must adhere to certain financial covenants related to its borrowings under the Credit Facility and interest leverage ratios, as defined in the Credit Facility. The consolidated first lien net leverage ratio, reported each quarter, should be no greater than 4.75:1.0 from April 1, 2012 through June 30, 2014; 4.50:1.0 from July 1, 2014 to June 30, 2015, and 4.25:1.0 thereafter. The interest coverage ratio must be at least 1.70:1.0 from January 1, 2013 to December 31, 2014 and 1.85:1.0 thereafter.
	As of June 28, 2014 and December 28, 2013, the Company was in compliance with all covenants applicable to the Senior Notes and the Credit Facility. The Company’s wholly-owned subsidiary companies and its non wholly-owned subsidiary, Continental Cement, are named as issuers or guarantors, as applicable, of the Senior Notes and the Credit Facility. In addition, the Company has pledged substantially all of its assets as collateral for the Credit Facility.
	Accrued interest on long-term debt as of June 28, 2014 and December 28, 2013 was $27.4 million and $17.1 million, respectively. Interest expense related to the debt totaled $19.3 million and $36.5 million for the three and six month periods ended June 28, 2014, respectively, and $12.8 million and $24.6 million for the three and six month periods ended June 29, 2013, respectively. As of June 28, 2014 and December 28, 2013, $16.3 million and $11.5 million, respectively, of deferred financing fees were being amortized over the term of the debt using the effective interest method.

Income_Taxes

Income Taxes	6 Months Ended
	Jun. 28, 2014
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	8	INCOME TAXES
	Summit Materials is a limited liability company and passes its tax attributes for federal and state tax purposes to its parent company and is generally not subject to federal or state income tax. However, certain subsidiary entities file federal and state income tax returns due to their status as C corporations. The provision for income taxes is composed of federal, state and local income taxes for the subsidiary entities that have C corporation status.
	The effective income tax rate for these entities differs from the statutory federal rate primarily due to (1) depletion expense and domestic production activities deduction, which are allowed as deductions for tax purposes but not recorded under GAAP, (2) state income taxes and the effect of graduated tax rates and (3) certain non-recurring items, such as differences in the treatment of transaction costs, which are often not deductible for tax purposes.
	As of June 28, 2014 and December 28, 2013, the Company has not recognized any liabilities for uncertain tax positions. The Company records interest and penalties as a component of the income tax provision. No material interest or penalties were recognized in income tax expense for the three or six month periods ended June 28, 2014 and June 29, 2013.

Commitments_and_Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 28, 2014
Commitments And Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	9	COMMITMENTS AND CONTINGENCIES
	The Company is party to certain legal actions arising from the ordinary course of business activities. Accruals are recorded when the outcome is probable and can be reasonably estimated in accordance with applicable accounting requirements. While the ultimate results of claims and litigation cannot be predicted with certainty, management expects that the ultimate resolution of all pending or threatened claims and litigation will not have a material effect on the Company’s consolidated results of operations, financial position or liquidity. The Company’s policy is to record legal fees as incurred.
	Litigation and Claims—The Company is obligated under an indemnification agreement entered into with the sellers of Harper Contracting, Inc., Harper Sand and Gravel, Inc., Harper Ready Mix Company, Inc. and Harper Investments, Inc. (collectively, “Harper”) for the sellers’ ownership interests in a joint venture agreement. The Company has the rights to any benefits under the joint venture as well as the assumption of any obligations, but does not own equity interests in the joint venture. The joint venture incurred significant losses on a highway project in Utah, which resulted in requests for funding from the joint venture partners and, ultimately, from the Company. Through June 28, 2014, the Company has funded $8.8 million, of which $4.0 million was funded in 2012 and $4.8 million was funded in 2011. As of June 28, 2014 and December 28, 2013, an accrual of $4.3 million was recorded in other noncurrent liabilities for this matter.
	During the course of business, there may be revisions to project costs and conditions that can give rise to change orders on construction contracts. Revisions can also result in claims made against a customer or subcontractor to recover project variances that have not been satisfactorily addressed through change orders with a customer. As of June 28, 2014 and December 28, 2013, unapproved change orders and claims totaled $4.0 million ($0.5 million in costs and estimated earnings in excess of billings, $1.2 million in accounts receivable and $2.3 million in other assets) and $3.2 million ($0.5 million in costs and estimated earnings in excess of billings and $2.7 million in other assets), respectively.
	Environmental Remediation—The Company’s operations are subject to and affected by federal, state and local laws and regulations relating to the environment, health and safety and other regulatory matters. These operations require environmental operating permits, which are subject to modification, renewal and revocation. Management regularly monitors and reviews its operations, procedures and policies for compliance with these laws and regulations. Despite these compliance efforts, risk of environmental liability is inherent in the operation of the Company’s business, as it is with other companies engaged in similar businesses, and there can be no assurance that environmental liabilities will not have a material adverse effect on the Company’s consolidated financial position, results of operations or liquidity in the future.
	Other—In February 2011, the Company incurred a property loss related to a sunken barge with cement product aboard. During the six months ended June 29, 2013, the Company recorded a $1.8 million charge for costs to remove the barge from the waterway. As of June 28, 2014 and December 28, 2013, the Company had $0.4 million and $0.9 million, respectively, included in accrued expenses as management’s best estimate of the remaining costs to remove the barge.
	In the ordinary course of business, the Company enters into various firm purchase commitments with terms generally less than one year for certain raw materials and services. Management does not expect any significant changes in the market value of these goods and services during the commitment period that would have a material adverse effect on the financial position, results of operations or liquidity of the Company.

Supplemental_Cash_Flow_Informa

Supplemental Cash Flow Information	6 Months Ended
	Jun. 28, 2014
Supplemental Cash Flow Elements [Abstract]	'
Supplemental Cash Flow Information	'
	10	SUPPLEMENTAL CASH FLOW INFORMATION
	Supplemental cash flow information is as follows:
			Six months ended
			June 28,		June 29,
			2014		2013
	Cash payments:
	Interest		$	25,881	$	31,439
	Income taxes			1,320		653

Segment_Information

Segment Information	6 Months Ended
	Jun. 28, 2014
Segment Reporting [Abstract]	'
Segment Information	'
	11	SEGMENT INFORMATION
	The Company has determined that it has three operating segments, which are its reportable segments: the West; Central; and East regions. These segments are consistent with the Company’s management reporting structure. Each region’s operations consist of various activities related to the production, distribution and sale of construction materials, products and the provision of construction services. Assets employed by segment include assets directly identified with those operations. Corporate assets consist primarily of cash, property, plant and equipment for corporate operations and other assets not directly identifiable with a reportable business segment. The accounting policies applicable to each segment are consistent with those used in preparing the consolidated financial statements. The following tables display selected financial data for the Company’s reportable segments:
			Three months ended						Six months ended
			June 28,			June 29,			June 28,			June 29,
			2014			2013			2014			2013
	Revenue:
	West region		$	172,236		$	119,656		$	267,130		$	179,719
	Central region			109,117			92,780			156,659			128,680
	East region			42,942			42,406			51,597			53,272
	Total revenue		$	324,295		$	254,842		$	475,386		$	361,671
			Three months ended						Six months ended
			June 28,			June 29,			June 28,			June 29,
			2014			2013			2014			2013
	Segment profit:
	West region		$	30,750		$	6,807		$	32,541		$	85
	Central region			28,823			25,136			28,400			19,182
	East region			7,932			7,155			(1,406	)		(2,377	)
	Corporate and other			(11,547	)		(6,204	)		(19,046	)		(12,272	)
	Total reportable segments and corporate			55,958			32,894			40,489			4,618
	Interest expense			21,651			14,482			40,470			27,849
	Depreciation, depletion, amortization and accretion			21,339			18,894			40,695			36,026
	Income (loss) from continuing operations before taxes		$	12,968		$	(482	)	$	(40,676	)	$	(59,257	)
			Six months ended
			June 28,			June 29,
			2014			2013
	Cash paid for capital expenditures:
	West region		$	17,924		$	14,194
	Central region			23,372			19,826
	East region			5,533			5,742
	Total reportable segments			46,829			39,762
	Corporate and other			2,431			766
	Total capital expenditures		$	49,260		$	40,528
			Three months ended						Six months ended
			June 28,			June 29,			June 28,			June 29,
			2014			2013			2014			2013
	Depreciation, depletion, amortization and accretion:
	West region		$	7,667		$	6,456		$	14,414		$	12,291
	Central region			9,504			8,687			18,351			16,329
	East region			3,831			3,729			7,288			7,362
	Total reportable segments			21,002			18,872			40,053			35,982
	Corporate and other			337			22			642			44
	Total depreciation, depletion, amortization and accretion		$	21,339		$	18,894		$	40,695		$	36,026
			June 28,			December 28,
			2014			2013
	Total assets:
	West region		$	664,913		$	383,544
	Central region			697,318			657,421
	East region			240,081			192,486
	Total reportable segments			1,602,312			1,233,451
	Corporate and other			15,328			14,343
	Total		$	1,617,640		$	1,247,794
			Three months ended						Six months ended
			June 28,			June 29,			June 28,			June 29,
			2014			2013			2014			2013
	Revenue by product:*
	Aggregates		$	59,816		$	47,439		$	91,365		$	68,304
	Cement			26,181			21,474			33,387			30,914
	Ready-mixed concrete			71,389			33,279			113,769			46,412
	Asphalt			74,686			55,857			99,082			75,208
	Paving and related services			143,918			125,536			199,420			171,946
	Other			(51,695	)		(28,743	)		(61,637	)		(31,113	)
	Total revenue		$	324,295		$	254,842		$	475,386		$	361,671
		*	Revenue by product includes intracompany sales transferred at market value. The elimination of intracompany transactions is included in Other.

Related_Party_Transactions

Related Party Transactions	6 Months Ended
	Jun. 28, 2014
Related Party Transactions [Abstract]	'
Related Party Transactions	'
	12	RELATED PARTY TRANSACTIONS
	The Company incurred certain management fees due to Blackstone Management Partners L.L.C. (“BMP”) totaling $1.3 million and $2.3 million during the three and six month periods ended June 28, 2014, respectively, and $0.6 million and $1.2 million during the three and six month periods ended June 29, 2013, respectively. Under the terms of an agreement with Summit Materials Holdings L.P. and BMP, BMP provides monitoring, advisory and consulting services to the Company. In consideration for these services, the Company pays BMP the greater of $300,000 or 2.0% of the Company’s annual consolidated profit, as defined in the agreement. The management fees paid pursuant to this agreement are included in general and administrative expenses.
	BMP also undertakes financial and structural analysis, due diligence investigations, corporate strategy and other advisory services and negotiation assistance related to acquisitions, for which the Company pays BMP a transaction fee equal to 1.0% of the aggregate enterprise value of any acquired entity or, if such transaction is structured as an asset purchase or sale, 1.0% of the consideration paid for or received in respect of the assets acquired or disposed. Under the terms of the agreement, BMP is permitted to assign, and has assigned, a portion of the fees to which it is entitled to Silverhawk Summit, L.P. and to certain other equity-holding current and former employees and board members. During the three and six months ended June 28, 2014, the Company paid BMP $0.6 million and $2.3 million, respectively, under this agreement and paid immaterial amounts to Silverhawk Summit, L.P. and to other equityholders. The acquisition-related fees paid pursuant to this agreement are included in transaction costs.
	Blackstone Advisory Partners L.P., an affiliate of The Blackstone Group L.P., served as an initial purchaser of $13.0 million principal amount of the Additional Notes issued in January 2014 and received compensation in connection therewith.
	In addition to the fees paid to BMP pursuant to the agreements described above, the Company reimburses BMP for direct expenses incurred, which were not material in the three and six month periods ended June 28, 2014 and June 29, 2013.
	The Company had an immaterial amount of revenue from unconsolidated affiliates during the three and six month periods ended June 28, 2014 and $0.4 million both during the three and six month periods ended June 29, 2013. As of June 28, 2014 and December 28, 2013, accounts receivable from affiliates was zero and $0.4 million, respectively.
	Cement sales to companies owned by a noncontrolling member of Continental Cement were approximately $4.5 million and $6.2 million during the three and six month periods ended June 28, 2014, respectively, and $3.5 million and $5.1 million during the three and six month periods ended June 29, 2013, respectively. Accounts receivables due from the noncontrolling member were $1.2 million and $0.2 million as of June 28, 2014 and December 28, 2013, respectively. In addition, as of December 28, 2013, the Company had accrued interest payments of $0.7 million due to a certain noncontrolling member for a related party note, which the Company paid in the first quarter of 2014. The principal balance on the note was repaid in January 2012.
	In the six months ended June 28, 2014, the Company sold certain assets associated with the production of concrete blocks, including inventory and equipment, to a related party for $2.3 million.

Senior_Notes_Guarantor_and_Non

Senior Notes' Guarantor and Non-Guarantor Financial Information	6 Months Ended
	Jun. 28, 2014
Organization Consolidation And Presentation Of Financial Statements [Abstract]	'
Senior Notes' Guarantor and Non-Guarantor Financial Information	'
	13	SENIOR NOTES’ GUARANTOR AND NON-GUARANTOR FINANCIAL INFORMATION
	Summit Materials’ wholly-owned subsidiary companies other than Finance Corp. (“Wholly-owned Guarantors”) and non wholly-owned subsidiary, Continental Cement (“Non Wholly-owned Guarantor”), are named as guarantors (collectively, the “Guarantors”) of the Senior Notes. Certain other partially-owned subsidiaries, including a subsidiary of Continental Cement, do not guarantee the Senior Notes (collectively, the “Non-Guarantors”). Summit Materials (“Parent”) and Finance Corp. (collectively, the “Issuers”) were co-issuers of the Senior Notes. The Guarantors provide a joint and several, full and unconditional guarantee of the Senior Notes. There are no significant restrictions on Summit Materials ability to obtain funds from any of the Guarantor Subsidiaries in the form of dividends or loans. Additionally, there are no significant restrictions on a Guarantor Subsidiary’s ability to obtain funds from Summit Materials or its direct or indirect subsidiaries.
	The following condensed consolidating balance sheets, statements of operations and cash flows are provided for the Issuers, the Non-Wholly-owned Guarantor, the Wholly-owned Guarantors and the Non-Guarantors. Earnings from subsidiaries are included in other income in the condensed consolidated statements of operations below. The financial information may not necessarily be indicative of results of operations, cash flows or financial position had the guarantor or non-guarantor subsidiaries operated as independent entities.
	Condensed Consolidating Balance Sheets
	June 28, 2014
			Issuers			Non-Wholly-owned			Wholly-			Non-			Elim-			Consol-
						Guarantor			owned			Guarantors			inations			idated
									Guarantors
	Assets
	Current assets:
	Cash		$	21,685		$	7		$	2,681		$	4,723		$	(8,294	)	$	20,802
	Accounts receivable, net			—			12,338			128,876			4,922			(2,368	)		143,768
	Intercompany receivables			264,955			—			33,532			—			(298,487	)		—
	Cost and estimated earnings in excess of billings			—			—			21,018			761			—			21,779
	Inventories			—			14,569			102,293			2,309			—			119,171
	Other current assets			2,791			722			9,645			375			(298	)		13,235
	Total current assets			289,431			27,636			298,045			13,090			(309,447	)		318,755
	Property, plant and equipment, net			5,755			305,274			602,744			6,740			—			920,513
	Goodwill			—			23,124			293,227			972			—			317,323
	Intangible assets, net			—			592			14,683			—			—			15,275
	Other assets			499,692			20,378			63,234			1,235			(538,765	)		45,774
	Total assets		$	794,878		$	377,004		$	1,271,933		$	22,037		$	(848,212	)	$	1,617,640
	Liabilities, Redeemable Noncontrolling Interest and Member’s Interest
	Current liabilities:
	Current portion of debt		$	69,220		$	1,018		$	3,192		$	—		$	(4,210	)	$	69,220
	Current portion of acquisition-related liabilities			1,141			—			17,898			—			—			19,039
	Accounts payable			4,517			7,978			64,426			3,691			(2,368	)		78,244
	Accrued expenses			25,566			7,691			62,068			1,180			(8,592	)		87,913
	Intercompany payables			101,411			21,810			174,376			890			(298,487	)		—
	Billings in excess of costs and estimated earnings			—			—			4,877			25			—			4,902
	Total current liabilities			201,855			38,497			326,837			5,786			(313,657	)		259,318
	Long-term debt			938,290			154,081			482,993			—			(637,074	)		938,290
	Acquisition-related liabilities			—			—			40,947			—			—			40,947
	Other noncurrent liabilities			879			17,570			64,966			—			—			83,415
	Total liabilities			1,141,024			210,148			915,743			5,786			(950,731	)		1,321,970
	Redeemable noncontrolling interest			—			—			—			—			26,825			26,825
	Redeemable members’ interest			—			23,750			—			—			(23,750	)		—
	Total member’s interest			(346,146	)		143,106			356,190			16,251			99,444			268,845
	Total liabilities, redeemable noncontrolling interest and member’s interest		$	794,878		$	377,004		$	1,271,933		$	22,037		$	(848,212	)	$	1,617,640
	Condensed Consolidating Balance Sheets
	December 28, 2013
			Issuers			Non-Wholly-owned			Wholly-			Non-			Elim-			Consol-
						Guarantor			owned			Guarantors			inations			idated
									Guarantors
	Assets
	Current assets:
	Cash		$	10,375		$	9		$	3,442		$	3,631		$	(2,540	)	$	14,917
	Accounts receivable, net			—			4,587			93,102			3,100			(1,452	)		99,337
	Intercompany receivables			38,134			3,433			30,787			—			(72,354	)		—
	Cost and estimated earnings in excess of billings			—			—			10,539			228			—			10,767
	Inventories			—			10,402			85,372			658			—			96,432
	Other current assets			750			444			11,715			272			—			13,181
	Total current assets			49,259			18,875			234,957			7,889			(76,346	)		234,634
	Property, plant and equipment, net			3,969			301,908			518,935			6,966			—			831,778
	Goodwill			—			23,124			102,942			972			—			127,038
	Intangible assets, net			—			642			14,505			—			—			15,147
	Other assets			296,494			17,973			37,535			1,303			(314,108	)		39,197
	Total assets		$	349,722		$	362,522		$	908,874		$	17,130		$	(390,454	)	$	1,247,794
	Liabilities, Redeemable Noncontrolling Interest and Member’s Interest
	Current liabilities:
	Current portion of debt		$	26,010		$	1,018		$	3,192		$	—		$	—		$	30,220
	Current portion of acquisition-related liabilities			2,000			—			8,635			—			—			10,635
	Accounts payable			5,455			9,387			57,142			1,572			(1,452	)		72,104
Accrued expenses			12,041			9,185			37,342			1,223			(2,540	)		57,251
Intercompany payables			—			—			71,556			798			(72,354	)		—
Billings in excess of costs and estimated earnings			—			—			8,837			426			—			9,263
Total current liabilities			45,506			19,590			186,704			4,019			(76,346	)		179,473
Long-term debt			19,587			154,590			484,590			—			—			658,767
Acquisition-related liabilities			85			—			23,671			—			—			23,756
Other noncurrent liabilities			959			20,306			56,215			—			—			77,480
Total liabilities			66,137			194,486			751,180			4,019			(76,346	)		939,476
Redeemable noncontrolling interest			—			—			—			—			24,767			24,767
Redeemable members’ interest			—			23,450			—			—			(23,450	)		—
Total member’s interest			283,585			144,586			157,694			13,111			(315,425	)		283,551
Total liabilities, redeemable noncontrolling interest and member’s interest		$	349,722		$	362,522		$	908,874		$	17,130		$	(390,454	)	$	1,247,794
Condensed Consolidating Statements of Operations
For the three months ended June 28, 2014
		Issuers			Non-Wholly-owned			Wholly-			Non-			Elim-			Consol-
					Guarantor			owned			Guarantors			inations			idated
								Guarantors
Revenue		$	—		$	27,557		$	287,307		$	14,942		$	(5,511	)	$	324,295
Cost of revenue (excluding items shown separately below)			—			16,724			210,693			9,856			(5,511	)		231,762
General and administrative expenses			10,002			1,900			25,080			290			—			37,272
Depreciation, depletion, amortization and accretion			338			3,703			17,020			278			—			21,339
Operating (loss) income			(10,340	)		5,230			34,514			4,518			—			33,922
Other (income) expense, net			(29,100	)		(1,261	)		(1,360	)		(3	)		31,027			(697	)
Interest expense			7,932			3,011			12,643			31			(1,966	)		21,651
Income from continuing operations before taxes			10,828			3,480			23,231			4,490			(29,061	)		12,968
Income tax benefit (expense)			(1,427	)		—			563			—			—			(864	)
Income from continuing operations			12,255			3,480			22,668			4,490			(29,061	)		13,832
Income from discontinued operations			—			—			(369	)		—			—			(369	)
Net income			12,255			3,480			23,037			4,490			(29,061	)		14,201
Net income attributable to minority interest			—			—			—			—			1,946			1,946
Net income attributable to member of Summit Materials, LLC		$	12,255		$	3,480		$	23,037		$	4,490		$	(31,007	)	$	12,255
Comprehensive income attributable to member of Summit Materials, LLC		$	12,255		$	3,480		$	23,037		$	4,490		$	(31,007	)	$	12,255
Condensed Consolidating Statements of Operations
For the three months ended June 29, 2013
		Issuers			Non-Wholly-owned			Wholly-			Non-			Elim-			Consol-
					Guarantor			owned			Guarantors			inations			idated
								Guarantors
Revenue		$	—		$	22,888		$	221,141		$	14,559		$	(3,746	)	$	254,842
Cost of revenue (excluding items shown separately below)			—			13,328			162,633			9,628			(3,746	)		181,843
General and administrative expenses			1,244			1,695			37,121			314			—			40,374
Depreciation, depletion, amortization and accretion			22			2,868			15,743			261			—			18,894
Operating (loss) income			(1,266	)		4,997			5,644			4,356			—			13,731
Other expense (income), net			403			(1,240	)		(1,632	)		47			2,153			(269	)
Interest expense			—			2,692			12,825			114			(1,149	)		14,482
(Loss) income from continuing operations before taxes			(1,669	)		3,545			(5,549	)		4,195			(1,004	)		(482	)
Income tax benefit			—			—			(726	)		—			—			(726	)
(Loss) income from continuing operations			(1,669	)		3,545			(4,823	)		4,195			(1,004	)		244
Income from discontinued operations			—			—			(26	)		—			—			(26	)
Net (loss) income			(1,669	)		3,545			(4,797	)		4,195			(1,004	)		270
Net income attributable to noncontrolling interest			—			—			—			—			1,939			1,939
Net (loss) income attributable to member of Summit Materials, LLC		$	(1,669	)	$	3,545		$	(4,797	)	$	4,195		$	(2,943	)	$	(1,669	)
Condensed Consolidating Statements of Operations
For the six months ended June 28, 2014
		Issuers			Non-Wholly-owned			Wholly-			Non-			Elim-			Consol-
					Guarantor			owned			Guarantors			inations			idated
								Guarantors
Revenue		$	—		$	35,264		$	427,717		$	21,274		$	(8,869	)	$	475,386
Cost of revenue (excluding items shown separately below)			—			27,626			328,318			13,362			(8,869	)		360,437
General and administrative expenses			17,690			3,574			53,521			566			—			75,351
Depreciation, depletion, amortization and accretion			642			6,777			32,731			545			—			40,695
Operating (loss) income			(18,332	)		(2,713	)		13,147			6,801			—			(1,097	)
Other expense (income), net			7,725			(1,358	)		(1,553	)		45			(5,750	)		(891	)
Interest expense			13,668			5,857			24,415			56			(3,526	)		40,470
(Loss) income from continuing operations before taxes			(39,725	)		(7,212	)		(9,715	)		6,700			9,276			(40,676	)
Income tax benefit			(1,427	)		—			(33	)		—			—			(1,460	)
(Loss) income from continuing operations			(38,298	)		(7,212	)		(9,682	)		6,700			9,276			(39,216	)
Income from discontinued operations			—			—			(349	)		—			—			(349	)
Net (loss) income			(38,298	)		(7,212	)		(9,333	)		6,700			9,276			(38,867	)
Net loss attributable to noncontrolling interest			—			—			—			—			(569	)		(569	)
Net (loss) income attributable to member of Summit Materials, LLC		$	(38,298	)	$	(7,212	)	$	(9,333	)	$	6,700		$	9,845		$	(38,298	)
Comprehensive (loss) income attributable to member of Summit Materials, LLC		$	(38,298	)	$	(6,394	)	$	(9,333	)	$	6,700		$	9,600		$	(37,725	)
Condensed Consolidating Statements of Operations
For the six months ended June 29, 2013
		Issuers			Non-Wholly-owned			Wholly-			Non-			Elim-			Consol-
					Guarantor			owned			Guarantors			inations			idated
								Guarantors
Revenue		$	—		$	32,799		$	314,895		$	20,486		$	(6,509	)	$	361,671
Cost of revenue (excluding items shown separately below)			—			27,833			243,357			13,235			(6,509	)		277,916
General and administrative expenses			2,896			5,083			67,296			584			—			75,859
Depreciation, depletion, amortization and accretion			44			5,532			29,938			512			—			36,026
Operating (loss) income			(2,940	)		(5,649	)		(25,696	)		6,155			—			(28,130	)
Other expense (income), net			51,549			(1,295	)		1,529			174			(48,679	)		3,278
Interest expense			—			5,423			24,095			239			(1,908	)		27,849
(Loss) income from continuing operations before taxes			(54,489	)		(9,777	)		(51,320	)		5,742			50,587			(59,257	)
Income tax benefit			—			—			(3,347	)		—			—			(3,347	)
(Loss) income from continuing operations			(54,489	)		(9,777	)		(47,973	)		5,742			50,587			(55,910	)
Loss from discontinued operations			—			—			97			—			—			97
Net (loss) income			(54,489	)		(9,777	)		(48,070	)		5,742			50,587			(56,007	)
Net loss attributable to noncontrolling interest			—			—			—			—			(1,518	)		(1,518	)
Net (loss) income attributable to member of Summit Materials, LLC		$	(54,489	)	$	(9,777	)	$	(48,070	)	$	5,742		$	52,105		$	(54,489	)
Condensed Consolidating Statements of Cash Flows
For the six months ended June 28, 2014
		Issuers			Non-Wholly-owned			Wholly-			Non-			Elim-			Consol-
					Guarantor			owned			Guarantors			inations			idated
								Guarantors
Net cash (used in) provided by operating activities		$	(18,665	)	$	(13,153	)	$	(13,412	)	$	168		$	(818	)	$	(45,880	)
Cash flow from investing activities:
Acquisitions, net of cash acquired			(181,754	)		—			(53,116	)		—			—			(234,870	)
Purchase of property, plant and equipment			(2,428	)		(11,829	)		(34,666	)		(337	)		—			(49,260	)
Proceeds from the sale of property, plant, and equipment			—			—			5,912			73			—			5,985
Other			—			—			(409	)		—			1,166			757
Net cash used for investing activities			(184,182	)		(11,829	)		(82,279	)		(264	)		1,166			(277,388	)
Cash flow from financing activities:
Proceeds from investment by member			24,350			—			—			1,166			(1,166	)		24,350
Net proceeds from debt issuance			424,750			—			—			—			—			424,750
Loans received from and payments made on loans from other Summit Companies			(123,441	)		25,234			104,121			22			(5,936	)		—
Payments on long-term debt			(104,060	)		(254	)		(4,932	)		—			—			(109,246	)
Payments on acquisition-related liabilities			(1,000	)		—			(3,259	)		—			—			(4,259	)
Financing costs			(6,354	)		—			—			—			—			(6,354	)
Other			(88	)		—			(1,000	)		—			1,000			(88	)
Net cash provided by (used for) financing activities			214,157			24,980			94,930			1,188			(6,102	)		329,153
Net increase (decrease) in cash			11,310			(2	)		(761	)		1,092			(5,754	)		5,885
Cash—Beginning of period			10,375			9			3,442			3,631			(2,540	)		14,917
Cash—End of period		$	21,685		$	7		$	2,681		$	4,723		$	(8,294	)	$	20,802
Condensed Consolidating Statements of Cash Flows
For the six months ended June 29, 2013
		Issuers			Non-Wholly-owned			Wholly-			Non-			Elim-			Consol-
					Guarantor			owned			Guarantors			inations			idated
								Guarantors
Net cash (used in) provided by operating activities		$	(28	)	$	(12,542	)	$	(39,989	)	$	4,799		$	—		$	(47,760	)
Cash flow from investing activities:
Acquisitions, net of cash acquired			—			—			(60,779	)		—			—			(60,779	)
Purchase of property, plant and equipment			(766	)		(15,214	)		(23,514	)		(1,034	)		—			(40,528	)
Proceeds from the sale of property, plant, and equipment			—			—			7,086			—			—			7,086
Net cash used for investing activities			(766	)		(15,214	)		(77,207	)		(1,034	)		—			(94,221	)
Cash flow from financing activities:
Net proceeds from debt issuance			189,681			—			—			—			—			189,681
Loans received from and payments made on loans from other Summit Companies			(124,587	)		27,367			100,970			(4,338	)		588			—
Payments on long-term debt			(61,343	)		—			—			—			—			(61,343	)
Payments on acquisition-related liabilities			—			—			(3,426	)		—			—			(3,426	)
Financing costs			(2,707	)		—			—			—			—			(2,707	)
Net cash provided by (used for) financing activities			1,044			27,367			97,544			(4,338	)		588			122,205
Net (decrease) increase in cash			250			(389	)		(19,652	)		(573	)		588			(19,776	)
Cash—Beginning of period			697			397			30,981			680			(5,324	)		27,431
Cash—End of period		$	947		$	8		$	11,329		$	107		$	(4,736	)	$	7,655

Summary_of_Organization_and_Si1

Summary of Organization and Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 28, 2014
Accounting Policies [Abstract]	'
Basis of Presentation	'
	Basis of Presentation—These consolidated financial statements were prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) for interim financial information, without audit, pursuant to the rules and regulations of the Securities and Exchange Commission. Certain information and footnote disclosures typically included in financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. These unaudited consolidated financial statements should be read in conjunction with the Company’s audited consolidated financial statements and the notes thereto as of and for the year ended December 28, 2013. The Company continues to follow the accounting policies set forth in those consolidated financial statements. Management believes that these consolidated interim financial statements include all adjustments, normal and recurring in nature, that are necessary to present fairly the financial position of the Company as of June 28, 2014, the results of operations for the three and six month periods ended June 28, 2014 and June 29, 2013 and cash flows for the six month periods ended June 28, 2014 and June 29, 2013.
	The Company’s fiscal year is based on a 52-53 week year with each quarter composed of 13 weeks ending on a Saturday. The 53 week year occurs approximately once every seven years. The additional week in the 53 week year will be included in the fourth quarter. The Company’s second quarter ended on June 28 and June 29 in 2014 and 2013, respectively. In 2013, Continental Cement Company, L.L.C. (“Continental Cement”), an indirect majority owned subsidiary of Summit Materials, changed its fiscal year to be consistent with the Company’s fiscal year. Prior to fiscal 2013, Continental Cement’s fiscal year was based on the calendar year with quarter-end dates of March 31, June 30, September 30 and December 31. The effect of this change to the Company’s financial position, results of operations and liquidity is immaterial.
	Substantially all of the Company’s products and services are produced, consumed and performed outdoors, primarily in the spring, summer and fall. Seasonal changes and other weather-related conditions can affect the production and sales volumes of its products and delivery of its services. Therefore, the financial results for any interim period are not necessarily indicative of the results expected for the full year. Furthermore, the Company’s sales and earnings are sensitive to national, regional and local economic conditions and to cyclical changes in construction spending, among other factors.
Use of Estimates	'
	Use of Estimates—Preparation of these consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions. These estimates and the underlying assumptions affect the amounts of assets and liabilities reported and the disclosures about contingent assets and liabilities and reported amounts of revenue and expenses. Such estimates include the valuation of accounts receivable, inventories, goodwill, intangibles and other long-lived assets, pension and other postretirement obligations and asset retirement obligations. Estimates also include revenue earned on contracts and costs to complete contracts; most of the Company’s construction work is performed under fixed unit-price contracts with state and local governmental entities. Management regularly evaluates its estimates and assumptions based on historical experience and other factors, including the current economic environment. Management adjusts such estimates and assumptions when circumstances dictate. As future events and their effects cannot be determined with precision, actual results can differ significantly from estimates made. Changes in estimates, including those resulting from continuing changes in the economic environment, are reflected in the Company’s consolidated financial statements during the period in which the change in estimate occurs.
Business and Credit Concentrations	'
	Business and Credit Concentrations—The Company’s operations are conducted primarily across 17 states, with the most significant revenue generated in Texas, Kansas, Kentucky, Utah and Missouri. The Company’s accounts receivable consist primarily of amounts due from customers within these areas. Therefore, collection of these accounts is dependent on the economic conditions in the aforementioned states, as well as specific situations affecting individual customers. Credit granted within the Company’s trade areas has been granted to many customers, and management does not believe that any significant concentrations of credit exist with respect to individual customers or groups of customers. No single customer accounted for more than 10% of total revenue in the three or six month periods ended June 28, 2014 and June 29, 2013.
Fair Value Measurements	'
	Fair Value Measurements—Certain acquisitions made by the Company require the payment of contingent amounts of purchase consideration. These payments are contingent on specified operating results being achieved in periods subsequent to the acquisition and will not be made if earn-out thresholds are not achieved. Contingent consideration obligations are measured at fair value each reporting period, and any adjustments to fair value are recognized in earnings in the period identified. As of June 28, 2014 and December 28, 2013, contingent consideration obligations of $3.6 million and $1.9 million were included in the non-current portion of acquisition-related liabilities and, as of June 28, 2014, $2.5 million was included in the current portion of acquisition related liabilities. The $4.2 million increase in contingent consideration obligations relates to the January 17, 2014 acquisition of Alleyton Resource Corporation, Colorado Gulf, LP and certain assets of Barten Shepard Investments, LP (collectively, “Alleyton”).
	The fair value of the contingent consideration obligations approximated their carrying value of $6.1 million and $1.9 million as of June 28, 2014 and December 28, 2013, respectively. The fair values are based on unobservable, or Level 3, inputs, including projected probability-weighted cash payments and an 11.0% discount rate, which reflects a market discount rate. Changes in fair value may occur as a result of a change in actual or projected cash payments, the probability weightings applied by the Company to projected payments or a change in the discount rate. Significant increases or decreases in any of these inputs in isolation could result in a lower, or higher, fair value measurement. There were no material valuation adjustments to contingent consideration obligations in the three or six month periods ended June 28, 2014 or June 29, 2013.
Financial Instruments	'
	Financial Instruments—The Company’s financial instruments include certain acquisition-related liabilities (deferred consideration and noncompete obligations) and debt. The fair value of the deferred consideration and noncompete obligations approximate their carrying value of $46.9 million and $6.9 million, respectively, as of June 28, 2014, and $28.3 million and $4.2 million, respectively, as of December 28, 2013. The $21.3 million increase in the deferred consideration and noncompete obligations primarily relate to the acquisitions completed in 2014. The fair value was determined based on unobservable, or Level 3 inputs, including the cash payment terms in the purchase agreements and a discount rate reflecting the Company’s credit risk.
	The fair value of long-term debt approximated $990.8 million and $696.5 million as of June 28, 2014 and December 28, 2013, respectively, compared to its carrying value of $927.8 million and $663.0 million, respectively. Fair value was determined based on observable, or Level 2 inputs, such as interest rates, bond yields and quoted prices in inactive markets.
Redeemable Noncontrolling Interest	'
	Redeemable Noncontrolling Interest—The Company owns all of the outstanding Class A Units of Continental Cement, which represent a 69.7% economic interest. Continental Cement’s Class B Units, which represent a 30.3% economic interest, are subordinate to the Class A Units. The Class B Units can be put to Continental Cement in the future based on the passage of time, which can be accelerated upon the occurrence of a contingent event; therefore, the noncontrolling interest of the Class B unit holders is classified in temporary equity. The redemption value was based upon the estimated fair value of Continental Cement at the date of acquisition and the Company has elected to accrete changes in the redemption value of the noncontrolling interest over the period from the date of issuance to the earliest anticipated redemption date, which is currently May 2016. The accretion is recognized through an adjustment to accumulated deficit. The redemption value of the redeemable noncontrolling interest as of June 28, 2014 and December 28, 2013 approximated its carrying value.

Goodwill_Tables

Goodwill (Tables)	6 Months Ended
	Jun. 28, 2014
Goodwill And Intangible Assets Disclosure [Abstract]	'
Changes in Carrying Amount of Goodwill, by Reportable Segment	'
	Changes in the carrying amount of goodwill, by reportable segment, from December 28, 2013 to June 28, 2014 are summarized as follows:
		West		Central		East		Total
	Balance, December 28, 2013	$	54,249	$	72,789	$	—	$	127,038
	Acquisitions		164,125		—		26,160		190,285
	Balance, June 28, 2014	$	218,374	$	72,789	$	26,160	$	317,323

Accounts_Receivable_Net_Tables

Accounts Receivable, Net (Tables)	6 Months Ended
	Jun. 28, 2014
Receivables [Abstract]	'
Summary of Accounts Receivable, Net	'
	Accounts receivable, net consisted of the following as of June 28, 2014 and December 28, 2013:
		June 28,			December 28,
		2014			2013
	Trade accounts receivable	$	131,026		$	85,188
	Retention receivables		14,185			15,966
	Receivables from related parties		1,262			202
	Accounts receivable		146,473			101,356
	Less: Allowance for doubtful accounts		(2,705	)		(2,019	)
	Accounts receivable, net	$	143,768		$	99,337

Inventories_Tables

Inventories (Tables)	6 Months Ended
	Jun. 28, 2014
Inventory Disclosure [Abstract]	'
Components of Inventories	'
	Inventories consisted of the following as of June 28, 2014 and December 28, 2013:
		June 28,		December 28,
		2014		2013
	Aggregate stockpiles	$	80,232	$	70,300
	Finished goods		14,104		11,207
	Work in process		4,629		2,623
	Raw materials		20,206		12,302
	Total	$	119,171	$	96,432

Accrued_Expenses_Tables

Accrued Expenses (Tables)	6 Months Ended
	Jun. 28, 2014
Payables And Accruals [Abstract]	'
Components of Accrued Expenses	'
	Accrued expenses consist of the following as of June 28, 2014 and December 28, 2013:
			June 28,		December 28,
			2014		2013
	Interest		$	27,633	$	16,456
	Payroll and benefits			16,066		16,368
	Capital lease obligations			13,528		2,068
	Insurance			8,212		7,445
	Taxes (1)			6,084		4,168
	Professional fees			2,177		2,352
	Other (2)			14,213		8,394
	Total		$	87,913	$	57,251
	-1	Consists primarily of real estate, personal property and sales taxes.
	-2	Consists primarily of subcontractor, management fee and working capital settlement accruals.

Debt_Tables

Debt (Tables)	6 Months Ended
	Jun. 28, 2014
Debt Disclosure [Abstract]	'
Schedule of Debt	'
	Debt consisted of the following as of June 28, 2014 and December 28, 2013:
		June 28,		December 28,
		2014		2013
	Revolver	$	65,000	$	26,000
	Long-term debt:
	$510.0 million senior notes, including a $17.3 million net premium at June 28, 2014 and $250 million senior notes, net of $4.0 million discount at December 28, 2013		527,319		245,971
	$417.8 million credit facility, term loan, net of $2.6 million and $2.9 million discount at June 28, 2014 and December 28, 2013, respectively		415,191		417,016
	Total		942,510		662,987
	Current portion of long-term debt		4,220		4,220
	Long-term debt	$	938,290	$	658,767
Schedule of Contractual Payments Long-Term Debt	'
	The contractual payments of long-term debt, including current maturities, for the five years subsequent to June 28, 2014, are as follows:
	2014 (six months)	$	2,110
	2015		5,275
	2016		4,220
	2017		4,220
	2018		3,165
	2019		398,790
	Thereafter		510,000
	Total		927,780
	Plus: Original issue net premium		14,730
	Total debt	$	942,510

Supplemental_Cash_Flow_Informa1

Supplemental Cash Flow Information (Tables)	6 Months Ended
	Jun. 28, 2014
Supplemental Cash Flow Elements [Abstract]	'
Schedule of Supplemental Cash Flow Information	'
	Supplemental cash flow information is as follows:
		Six months ended
		June 28,		June 29,
		2014		2013
	Cash payments:
	Interest	$	25,881	$	31,439
	Income taxes		1,320		653

Segment_Information_Tables

Segment Information (Tables)	6 Months Ended
	Jun. 28, 2014
Segment Reporting [Abstract]	'
Summary of Financial Data for Company's Reportable Business Segments	'
	The following tables display selected financial data for the Company’s reportable segments:
			Three months ended						Six months ended
			June 28,			June 29,			June 28,			June 29,
			2014			2013			2014			2013
	Revenue:
	West region		$	172,236		$	119,656		$	267,130		$	179,719
	Central region			109,117			92,780			156,659			128,680
	East region			42,942			42,406			51,597			53,272
	Total revenue		$	324,295		$	254,842		$	475,386		$	361,671
			Three months ended						Six months ended
			June 28,			June 29,			June 28,			June 29,
			2014			2013			2014			2013
	Segment profit:
	West region		$	30,750		$	6,807		$	32,541		$	85
	Central region			28,823			25,136			28,400			19,182
	East region			7,932			7,155			(1,406	)		(2,377	)
	Corporate and other			(11,547	)		(6,204	)		(19,046	)		(12,272	)
	Total reportable segments and corporate			55,958			32,894			40,489			4,618
	Interest expense			21,651			14,482			40,470			27,849
	Depreciation, depletion, amortization and accretion			21,339			18,894			40,695			36,026
	Income (loss) from continuing operations before taxes		$	12,968		$	(482	)	$	(40,676	)	$	(59,257	)
			Six months ended
			June 28,			June 29,
			2014			2013
	Cash paid for capital expenditures:
	West region		$	17,924		$	14,194
	Central region			23,372			19,826
	East region			5,533			5,742
	Total reportable segments			46,829			39,762
	Corporate and other			2,431			766
	Total capital expenditures		$	49,260		$	40,528
			Three months ended						Six months ended
			June 28,			June 29,			June 28,			June 29,
			2014			2013			2014			2013
	Depreciation, depletion, amortization and accretion:
	West region		$	7,667		$	6,456		$	14,414		$	12,291
	Central region			9,504			8,687			18,351			16,329
	East region			3,831			3,729			7,288			7,362
	Total reportable segments			21,002			18,872			40,053			35,982
	Corporate and other			337			22			642			44
	Total depreciation, depletion, amortization and accretion		$	21,339		$	18,894		$	40,695		$	36,026
			June 28,			December 28,
			2014			2013
	Total assets:
	West region		$	664,913		$	383,544
	Central region			697,318			657,421
	East region			240,081			192,486
	Total reportable segments			1,602,312			1,233,451
	Corporate and other			15,328			14,343
	Total		$	1,617,640		$	1,247,794
			Three months ended						Six months ended
			June 28,			June 29,			June 28,			June 29,
			2014			2013			2014			2013
	Revenue by product:*
	Aggregates		$	59,816		$	47,439		$	91,365		$	68,304
	Cement			26,181			21,474			33,387			30,914
	Ready-mixed concrete			71,389			33,279			113,769			46,412
	Asphalt			74,686			55,857			99,082			75,208
	Paving and related services			143,918			125,536			199,420			171,946
	Other			(51,695	)		(28,743	)		(61,637	)		(31,113	)
	Total revenue		$	324,295		$	254,842		$	475,386		$	361,671
		*	Revenue by product includes intracompany sales transferred at market value. The elimination of intracompany transactions is included in Other.

Senior_Notes_Guarantor_and_Non1

Senior Notes' Guarantor and Non-Guarantor Financial Information (Tables)	6 Months Ended
	Jun. 28, 2014
Organization Consolidation And Presentation Of Financial Statements [Abstract]	'
Schedule of Condensed Consolidating Balance Sheets	'
	Condensed Consolidating Balance Sheets
	June 28, 2014
		Issuers			Non-Wholly-owned			Wholly-			Non-			Elim-			Consol-
					Guarantor			owned			Guarantors			inations			idated
								Guarantors
	Assets
	Current assets:
	Cash	$	21,685		$	7		$	2,681		$	4,723		$	(8,294	)	$	20,802
	Accounts receivable, net		—			12,338			128,876			4,922			(2,368	)		143,768
	Intercompany receivables		264,955			—			33,532			—			(298,487	)		—
	Cost and estimated earnings in excess of billings		—			—			21,018			761			—			21,779
	Inventories		—			14,569			102,293			2,309			—			119,171
	Other current assets		2,791			722			9,645			375			(298	)		13,235
	Total current assets		289,431			27,636			298,045			13,090			(309,447	)		318,755
	Property, plant and equipment, net		5,755			305,274			602,744			6,740			—			920,513
	Goodwill		—			23,124			293,227			972			—			317,323
	Intangible assets, net		—			592			14,683			—			—			15,275
	Other assets		499,692			20,378			63,234			1,235			(538,765	)		45,774
	Total assets	$	794,878		$	377,004		$	1,271,933		$	22,037		$	(848,212	)	$	1,617,640
	Liabilities, Redeemable Noncontrolling Interest and Member’s Interest
	Current liabilities:
	Current portion of debt	$	69,220		$	1,018		$	3,192		$	—		$	(4,210	)	$	69,220
	Current portion of acquisition-related liabilities		1,141			—			17,898			—			—			19,039
	Accounts payable		4,517			7,978			64,426			3,691			(2,368	)		78,244
	Accrued expenses		25,566			7,691			62,068			1,180			(8,592	)		87,913
	Intercompany payables		101,411			21,810			174,376			890			(298,487	)		—
	Billings in excess of costs and estimated earnings		—			—			4,877			25			—			4,902
	Total current liabilities		201,855			38,497			326,837			5,786			(313,657	)		259,318
	Long-term debt		938,290			154,081			482,993			—			(637,074	)		938,290
	Acquisition-related liabilities		—			—			40,947			—			—			40,947
	Other noncurrent liabilities		879			17,570			64,966			—			—			83,415
	Total liabilities		1,141,024			210,148			915,743			5,786			(950,731	)		1,321,970
	Redeemable noncontrolling interest		—			—			—			—			26,825			26,825
	Redeemable members’ interest		—			23,750			—			—			(23,750	)		—
	Total member’s interest		(346,146	)		143,106			356,190			16,251			99,444			268,845
	Total liabilities, redeemable noncontrolling interest and member’s interest	$	794,878		$	377,004		$	1,271,933		$	22,037		$	(848,212	)	$	1,617,640
	Condensed Consolidating Balance Sheets
	December 28, 2013
		Issuers			Non-Wholly-owned			Wholly-			Non-			Elim-			Consol-
					Guarantor			owned			Guarantors			inations			idated
								Guarantors
	Assets
	Current assets:
	Cash	$	10,375		$	9		$	3,442		$	3,631		$	(2,540	)	$	14,917
	Accounts receivable, net		—			4,587			93,102			3,100			(1,452	)		99,337
	Intercompany receivables		38,134			3,433			30,787			—			(72,354	)		—
	Cost and estimated earnings in excess of billings		—			—			10,539			228			—			10,767
	Inventories		—			10,402			85,372			658			—			96,432
	Other current assets		750			444			11,715			272			—			13,181
	Total current assets		49,259			18,875			234,957			7,889			(76,346	)		234,634
	Property, plant and equipment, net		3,969			301,908			518,935			6,966			—			831,778
	Goodwill		—			23,124			102,942			972			—			127,038
	Intangible assets, net		—			642			14,505			—			—			15,147
	Other assets		296,494			17,973			37,535			1,303			(314,108	)		39,197
	Total assets	$	349,722		$	362,522		$	908,874		$	17,130		$	(390,454	)	$	1,247,794
	Liabilities, Redeemable Noncontrolling Interest and Member’s Interest
	Current liabilities:
	Current portion of debt	$	26,010		$	1,018		$	3,192		$	—		$	—		$	30,220
	Current portion of acquisition-related liabilities		2,000			—			8,635			—			—			10,635
	Accounts payable		5,455			9,387			57,142			1,572			(1,452	)		72,104
	Accrued expenses		12,041			9,185			37,342			1,223			(2,540	)		57,251
	Intercompany payables		—			—			71,556			798			(72,354	)		—
	Billings in excess of costs and estimated earnings		—			—			8,837			426			—			9,263
Total current liabilities		45,506			19,590			186,704			4,019			(76,346	)		179,473
Long-term debt		19,587			154,590			484,590			—			—			658,767
Acquisition-related liabilities		85			—			23,671			—			—			23,756
Other noncurrent liabilities		959			20,306			56,215			—			—			77,480
Total liabilities		66,137			194,486			751,180			4,019			(76,346	)		939,476
Redeemable noncontrolling interest		—			—			—			—			24,767			24,767
Redeemable members’ interest		—			23,450			—			—			(23,450	)		—
Total member’s interest		283,585			144,586			157,694			13,111			(315,425	)		283,551
Total liabilities, redeemable noncontrolling interest and member’s interest	$	349,722		$	362,522		$	908,874		$	17,130		$	(390,454	)	$	1,247,794
Schedule of Condensed Consolidating Statements of Operations	'
	Condensed Consolidating Statements of Operations
	For the three months ended June 28, 2014
		Issuers			Non-Wholly-owned			Wholly-			Non-			Elim-			Consol-
					Guarantor			owned			Guarantors			inations			idated
								Guarantors
	Revenue	$	—		$	27,557		$	287,307		$	14,942		$	(5,511	)	$	324,295
	Cost of revenue (excluding items shown separately below)		—			16,724			210,693			9,856			(5,511	)		231,762
	General and administrative expenses		10,002			1,900			25,080			290			—			37,272
	Depreciation, depletion, amortization and accretion		338			3,703			17,020			278			—			21,339
	Operating (loss) income		(10,340	)		5,230			34,514			4,518			—			33,922
	Other (income) expense, net		(29,100	)		(1,261	)		(1,360	)		(3	)		31,027			(697	)
	Interest expense		7,932			3,011			12,643			31			(1,966	)		21,651
	Income from continuing operations before taxes		10,828			3,480			23,231			4,490			(29,061	)		12,968
	Income tax benefit (expense)		(1,427	)		—			563			—			—			(864	)
	Income from continuing operations		12,255			3,480			22,668			4,490			(29,061	)		13,832
	Income from discontinued operations		—			—			(369	)		—			—			(369	)
	Net income		12,255			3,480			23,037			4,490			(29,061	)		14,201
	Net income attributable to minority interest		—			—			—			—			1,946			1,946
	Net income attributable to member of Summit Materials, LLC	$	12,255		$	3,480		$	23,037		$	4,490		$	(31,007	)	$	12,255
	Comprehensive income attributable to member of Summit Materials, LLC	$	12,255		$	3,480		$	23,037		$	4,490		$	(31,007	)	$	12,255
	Condensed Consolidating Statements of Operations
	For the three months ended June 29, 2013
		Issuers			Non-Wholly-owned			Wholly-			Non-			Elim-			Consol-
					Guarantor			owned			Guarantors			inations			idated
								Guarantors
	Revenue	$	—		$	22,888		$	221,141		$	14,559		$	(3,746	)	$	254,842
	Cost of revenue (excluding items shown separately below)		—			13,328			162,633			9,628			(3,746	)		181,843
	General and administrative expenses		1,244			1,695			37,121			314			—			40,374
	Depreciation, depletion, amortization and accretion		22			2,868			15,743			261			—			18,894
	Operating (loss) income		(1,266	)		4,997			5,644			4,356			—			13,731
	Other expense (income), net		403			(1,240	)		(1,632	)		47			2,153			(269	)
	Interest expense		—			2,692			12,825			114			(1,149	)		14,482
	(Loss) income from continuing operations before taxes		(1,669	)		3,545			(5,549	)		4,195			(1,004	)		(482	)
	Income tax benefit		—			—			(726	)		—			—			(726	)
	(Loss) income from continuing operations		(1,669	)		3,545			(4,823	)		4,195			(1,004	)		244
	Income from discontinued operations		—			—			(26	)		—			—			(26	)
	Net (loss) income		(1,669	)		3,545			(4,797	)		4,195			(1,004	)		270
	Net income attributable to noncontrolling interest		—			—			—			—			1,939			1,939
	Net (loss) income attributable to member of Summit Materials, LLC	$	(1,669	)	$	3,545		$	(4,797	)	$	4,195		$	(2,943	)	$	(1,669	)
	Condensed Consolidating Statements of Operations
	For the six months ended June 28, 2014
		Issuers			Non-Wholly-owned			Wholly-			Non-			Elim-			Consol-
					Guarantor			owned			Guarantors			inations			idated
								Guarantors
	Revenue	$	—		$	35,264		$	427,717		$	21,274		$	(8,869	)	$	475,386
	Cost of revenue (excluding items shown separately below)		—			27,626			328,318			13,362			(8,869	)		360,437
	General and administrative expenses		17,690			3,574			53,521			566			—			75,351
	Depreciation, depletion, amortization and accretion		642			6,777			32,731			545			—			40,695
	Operating (loss) income		(18,332	)		(2,713	)		13,147			6,801			—			(1,097	)
	Other expense (income), net		7,725			(1,358	)		(1,553	)		45			(5,750	)		(891	)
	Interest expense		13,668			5,857			24,415			56			(3,526	)		40,470
	(Loss) income from continuing operations before taxes		(39,725	)		(7,212	)		(9,715	)		6,700			9,276			(40,676	)
	Income tax benefit		(1,427	)		—			(33	)		—			—			(1,460	)
	(Loss) income from continuing operations		(38,298	)		(7,212	)		(9,682	)		6,700			9,276			(39,216	)
	Income from discontinued operations		—			—			(349	)		—			—			(349	)
	Net (loss) income		(38,298	)		(7,212	)		(9,333	)		6,700			9,276			(38,867	)
	Net loss attributable to noncontrolling interest		—			—			—			—			(569	)		(569	)
	Net (loss) income attributable to member of Summit Materials, LLC	$	(38,298	)	$	(7,212	)	$	(9,333	)	$	6,700		$	9,845		$	(38,298	)
	Comprehensive (loss) income attributable to member of Summit Materials, LLC	$	(38,298	)	$	(6,394	)	$	(9,333	)	$	6,700		$	9,600		$	(37,725	)
	Condensed Consolidating Statements of Operations
	For the six months ended June 29, 2013
		Issuers			Non-Wholly-owned			Wholly-			Non-			Elim-			Consol-
					Guarantor			owned			Guarantors			inations			idated
					Guarantors
Revenue	$	—		$	32,799		$	314,895		$	20,486		$	(6,509	)	$	361,671
Cost of revenue (excluding items shown separately below)		—			27,833			243,357			13,235			(6,509	)		277,916
General and administrative expenses		2,896			5,083			67,296			584			—			75,859
Depreciation, depletion, amortization and accretion		44			5,532			29,938			512			—			36,026
Operating (loss) income		(2,940	)		(5,649	)		(25,696	)		6,155			—			(28,130	)
Other expense (income), net		51,549			(1,295	)		1,529			174			(48,679	)		3,278
Interest expense		—			5,423			24,095			239			(1,908	)		27,849
(Loss) income from continuing operations before taxes		(54,489	)		(9,777	)		(51,320	)		5,742			50,587			(59,257	)
Income tax benefit		—			—			(3,347	)		—			—			(3,347	)
(Loss) income from continuing operations		(54,489	)		(9,777	)		(47,973	)		5,742			50,587			(55,910	)
Loss from discontinued operations		—			—			97			—			—			97
Net (loss) income		(54,489	)		(9,777	)		(48,070	)		5,742			50,587			(56,007	)
Net loss attributable to noncontrolling interest		—			—			—			—			(1,518	)		(1,518	)
Net (loss) income attributable to member of Summit Materials, LLC	$	(54,489	)	$	(9,777	)	$	(48,070	)	$	5,742		$	52,105		$	(54,489	)
Schedule of Condensed Consolidating Statements of Cash Flows	'
	Condensed Consolidating Statements of Cash Flows
	For the six months ended June 28, 2014
		Issuers			Non-Wholly-owned			Wholly-			Non-			Elim-			Consol-
					Guarantor			owned			Guarantors			inations			idated
								Guarantors
	Net cash (used in) provided by operating activities	$	(18,665	)	$	(13,153	)	$	(13,412	)	$	168		$	(818	)	$	(45,880	)
	Cash flow from investing activities:
	Acquisitions, net of cash acquired		(181,754	)		—			(53,116	)		—			—			(234,870	)
	Purchase of property, plant and equipment		(2,428	)		(11,829	)		(34,666	)		(337	)		—			(49,260	)
	Proceeds from the sale of property, plant, and equipment		—			—			5,912			73			—			5,985
	Other		—			—			(409	)		—			1,166			757
	Net cash used for investing activities		(184,182	)		(11,829	)		(82,279	)		(264	)		1,166			(277,388	)
	Cash flow from financing activities:
	Proceeds from investment by member		24,350			—			—			1,166			(1,166	)		24,350
	Net proceeds from debt issuance		424,750			—			—			—			—			424,750
	Loans received from and payments made on loans from other Summit Companies		(123,441	)		25,234			104,121			22			(5,936	)		—
	Payments on long-term debt		(104,060	)		(254	)		(4,932	)		—			—			(109,246	)
	Payments on acquisition-related liabilities		(1,000	)		—			(3,259	)		—			—			(4,259	)
	Financing costs		(6,354	)		—			—			—			—			(6,354	)
	Other		(88	)		—			(1,000	)		—			1,000			(88	)
	Net cash provided by (used for) financing activities		214,157			24,980			94,930			1,188			(6,102	)		329,153
	Net increase (decrease) in cash		11,310			(2	)		(761	)		1,092			(5,754	)		5,885
	Cash—Beginning of period		10,375			9			3,442			3,631			(2,540	)		14,917
	Cash—End of period	$	21,685		$	7		$	2,681		$	4,723		$	(8,294	)	$	20,802
	Condensed Consolidating Statements of Cash Flows
	For the six months ended June 29, 2013
		Issuers			Non-Wholly-owned			Wholly-			Non-			Elim-			Consol-
					Guarantor			owned			Guarantors			inations			idated
								Guarantors
	Net cash (used in) provided by operating activities	$	(28	)	$	(12,542	)	$	(39,989	)	$	4,799		$	—		$	(47,760	)
	Cash flow from investing activities:
	Acquisitions, net of cash acquired		—			—			(60,779	)		—			—			(60,779	)
	Purchase of property, plant and equipment		(766	)		(15,214	)		(23,514	)		(1,034	)		—			(40,528	)
	Proceeds from the sale of property, plant, and equipment		—			—			7,086			—			—			7,086
	Net cash used for investing activities		(766	)		(15,214	)		(77,207	)		(1,034	)		—			(94,221	)
	Cash flow from financing activities:
	Net proceeds from debt issuance		189,681			—			—			—			—			189,681
	Loans received from and payments made on loans from other Summit Companies		(124,587	)		27,367			100,970			(4,338	)		588			—
	Payments on long-term debt		(61,343	)		—			—			—			—			(61,343	)
	Payments on acquisition-related liabilities		—			—			(3,426	)		—			—			(3,426	)
	Financing costs		(2,707	)		—			—			—			—			(2,707	)
	Net cash provided by (used for) financing activities		1,044			27,367			97,544			(4,338	)		588			122,205
	Net (decrease) increase in cash		250			(389	)		(19,652	)		(573	)		588			(19,776	)
	Cash—Beginning of period		697			397			30,981			680			(5,324	)		27,431
	Cash—End of period	$	947		$	8		$	11,329		$	107		$	(4,736	)	$	7,655

Summary_of_Organization_and_Si2

Summary of Organization and Significant Accounting Policies - Additional Information (Detail) (USD $)

3 Months Ended

6 Months Ended

0 Months Ended

3 Months Ended

6 Months Ended

6 Months Ended

12 Months Ended

Jun. 28, 2014

Jun. 29, 2013

Jun. 28, 2014

Jun. 29, 2013

Dec. 28, 2013

Jan. 17, 2014

Jun. 28, 2014

Dec. 28, 2013

Jun. 28, 2014

Jun. 29, 2013

Jun. 28, 2014

Jun. 29, 2013

Jun. 28, 2014

Jun. 28, 2014

Jun. 28, 2014

Dec. 28, 2013

Jun. 28, 2014

Dec. 28, 2013

Customer

Customer

Customer

Customer

Series of Individually Immaterial Business Acquisitions [Member]

Series of Individually Immaterial Business Acquisitions [Member]

Series of Individually Immaterial Business Acquisitions [Member]

Sales [Member]

Sales [Member]

Sales [Member]

Sales [Member]

Class A Units [Member]

Class B Units [Member]

Level 3 [Member]

Level 3 [Member]

Observable Inputs (Level 2) [Member]

Observable Inputs (Level 2) [Member]

State

Summary Of Significant Accounting Policies And Recent Accounting Pronouncements [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of operating states

'

'

17

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Customer accounted revenue

'

'

'

'

'

'

'

'

10.00%

10.00%

10.00%

10.00%

'

'

'

'

'

'

Number of customers accounted for more than 10% of total revenue

0

0

0

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Contingent consideration obligations - current

'

'

'

'

'

'

$2,500,000

'

'

'

'

'

'

'

'

'

'

'

Contingent consideration obligations - non-current

'

'

'

'

'

'

3,600,000

1,900,000

'

'

'

'

'

'

'

'

'

'

Increase in contingent consideration liability

'

'

'

'

'

4,200,000

'

'

'

'

'

'

'

'

'

'

'

'

Fair value of earn-out obligations

6,100,000

'

6,100,000

'

1,900,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Discount rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

11.00%

'

'

'

Fair value of deferred consideration

'

'

'

'

'

'

'

'

'

'

'

'

'

'

46,900,000

28,300,000

'

'

Fair value of noncompete obligations

'

'

'

'

'

'

'

'

'

'

'

'

'

'

6,900,000

4,200,000

'

'

Increase in deferred consideration and noncompete obligation related to acquisition

'

'

'

'

'

'

'

'

'

'

'

'

'

'

21,300,000

'

'

'

Fair value of long-term debt

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

990,800,000

696,500,000

Carrying value of long-term debt

$942,510,000

'

$942,510,000

'

$662,987,000

'

'

'

'

'

'

'

'

'

'

'

$927,800,000

$663,000,000

Economic interest of redeemable noncontrolling interest

'

'

'

'

'

'

'

'

'

'

'

'

69.70%

'

'

'

'

'

Redeemable noncontrolling interest percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

30.30%

'

'

'

'

Acquisitions_Additional_Inform

Acquisitions - Additional Information (Detail) (USD $)	Jun. 28, 2014	Jan. 17, 2014	Dec. 28, 2013	Jan. 31, 2012	Jun. 28, 2014	Jun. 28, 2014	Jun. 28, 2014	Jan. 17, 2014	Jun. 28, 2014	Jun. 28, 2014
In Millions, unless otherwise specified	Senior Notes [Member]	Senior Notes [Member]	Senior Notes [Member]	Senior Notes [Member]	2014 Acquisitions [Member]	2014 Acquisitions [Member]	2014 Acquisitions [Member]	2014 Acquisitions [Member]	2013 Acquisitions [Member]	2013 Acquisitions [Member]
					West Region [Member]	East Region [Member]	West Region [Member]	West Region [Member]	West Region [Member]	Central Region [Member]
								Senior Notes [Member]
Business Acquisition [Line Items]	'	'	'	'	'	'	'	'	'	'
Business acquisition date	'	'	'	'	31-Mar-14	9-Jun-14	17-Jan-14	'	1-Apr-13	1-Apr-13
Debt instrument, face amount	$510	$260	$250	$250	'	'	'	$260	'	'
Interest rate	'	'	'	10.50%	'	'	'	10.50%	'	'

Goodwill_Changes_in_Carrying_A

Goodwill - Changes in Carrying Amount of Goodwill, by Reportable Segment (Detail) (USD $)	6 Months Ended				6 Months Ended
In Thousands, unless otherwise specified	Jun. 28, 2014	Jun. 28, 2014	Jun. 28, 2014	Dec. 28, 2013	Jun. 28, 2014
		West Region [Member]	Central Region [Member]	Central Region [Member]	East Region [Member]
Goodwill [Line Items]	'	'	'	'	'
Beginning Balance	$127,038	$54,249	$72,789	$72,789	'
Acquisitions	190,285	164,125	'	'	26,160
Ending Balance	$317,323	$218,374	$72,789	$72,789	$26,160

Accounts_Receivable_Net_Summar

Accounts Receivable, Net - Summary of Accounts Receivable, Net (Detail) (USD $)	Jun. 28, 2014	Dec. 28, 2013
In Thousands, unless otherwise specified
Receivables [Abstract]	'	'
Trade accounts receivable	$131,026	$85,188
Retention receivables	14,185	15,966
Receivables from related parties	1,262	202
Accounts receivable	146,473	101,356
Less: Allowance for doubtful accounts	-2,705	-2,019
Accounts receivable, net	$143,768	$99,337

Inventories_Components_of_Inve

Inventories - Components of Inventories (Detail) (USD $)	Jun. 28, 2014	Dec. 28, 2013
In Thousands, unless otherwise specified
Inventory Disclosure [Abstract]	'	'
Aggregate stockpiles	$80,232	$70,300
Finished goods	14,104	11,207
Work in process	4,629	2,623
Raw materials	20,206	12,302
Total	$119,171	$96,432

Accrued_Expenses_Components_of

Accrued Expenses - Components of Accrued Expenses (Detail) (USD $)	Jun. 28, 2014	Dec. 28, 2013
In Thousands, unless otherwise specified
Accrued Liabilities Current [Abstract]	'	'
Interest	$27,633	$16,456
Payroll and benefits	16,066	16,368
Capital lease obligations	13,528	2,068
Insurance	8,212	7,445
Taxes	6,084	4,168
Professional fees	2,177	2,352
Other	14,213	8,394
Total	$87,913	$57,251

Debt_Schedule_of_Debt_Detail

Debt - Schedule of Debt (Detail) (USD $)	Jun. 28, 2014	Dec. 28, 2013
In Thousands, unless otherwise specified
Debt Instrument [Line Items]	'	'
Revolver	$65,000	$26,000
Long-term debt:	'	'
Long-term debt, total	942,510	662,987
Current portion of long-term debt	4,220	4,220
Long-term debt	938,290	658,767
Credit Facility [Member]	'	'
Long-term debt:	'	'
Long-term debt, total	415,191	417,016
Senior Notes [Member]	'	'
Long-term debt:	'	'
Long-term debt, total	$527,319	$245,971

Debt_Schedule_of_Debt_Parenthe

Debt - Schedule of Debt (Parenthetical) (Detail) (USD $)	Jun. 28, 2014	Jan. 17, 2014	Dec. 28, 2013	Jan. 31, 2012
In Millions, unless otherwise specified
Senior Notes [Member]	'	'	'	'
Debt Instrument [Line Items]	'	'	'	'
Long-term debt, face value	$510	$260	$250	$250
Original issuance discount	17.3	'	4	'
Credit Facility [Member]	'	'	'	'
Debt Instrument [Line Items]	'	'	'	'
Long-term debt, face value	417.8	'	417.8	'
Original issuance discount	$2.60	'	$2.90	'

Debt_Schedule_of_Contractual_P

Debt - Schedule of Contractual Payments Long-Term Debt (Detail) (USD $)	Jun. 28, 2014	Dec. 28, 2013
In Thousands, unless otherwise specified
Debt Disclosure [Abstract]	'	'
2014 (six months)	$2,110	'
2015	5,275	'
2016	4,220	'
2017	4,220	'
2018	3,165	'
2019	398,790	'
Thereafter	510,000	'
Total	927,780	'
Plus: Original issue net premium	14,730	'
Total debt	$942,510	$662,987

Debt_Additional_Information_De

Debt - Additional Information (Detail) (USD $)

3 Months Ended

6 Months Ended

6 Months Ended

6 Months Ended

0 Months Ended

6 Months Ended

Jun. 28, 2014

Jun. 29, 2013

Jun. 28, 2014

Jun. 29, 2013

Dec. 28, 2013

Jun. 28, 2014

Jun. 28, 2014

Jun. 28, 2014

Jun. 28, 2014

Jun. 28, 2014

Jun. 28, 2014

Jun. 28, 2014

Jan. 17, 2014

Dec. 28, 2013

Jan. 31, 2012

Jan. 17, 2014

Jun. 28, 2014

Jun. 28, 2014

Jun. 28, 2014

Jun. 28, 2014

Jun. 28, 2014

LIBOR [Member]

Federal Funds Rate [Member]

LIBOR Rate Plus [Member]

Revolver [Member]

Letter of Credit [Member]

Senior Secured Credit Facility [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes (Additional Notes) [Member]

First Lien Net Leverage Ratio - April 1, 2012 through June 30, 2014 [Member]

First Lien Net Leverage Ratio - July 1, 2014 to June 30, 2015 [Member]

First Lien Net Leverage Ratio - Thereafter [Member]

Interest Coverage Ratio - January 1, 2013 to December 31, 2014 [Member]

Interest Coverage Ratio - Thereafter [Member]

Senior Secured Credit Facility [Member]

Senior Secured Credit Facility [Member]

Senior Secured Credit Facility [Member]

Senior Secured Credit Facility [Member]

Senior Secured Credit Facility [Member]

Maximum [Member]

Maximum [Member]

Maximum [Member]

Minimum [Member]

Minimum [Member]

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

10.50%

'

'

'

'

'

'

Maturity date

'

'

'

'

'

'

'

'

'

'

30-Jan-19

31-Jan-20

'

'

'

'

'

'

'

'

'

Debt instrument, face amount

'

'

'

'

'

'

'

'

'

'

$422,000,000

$510,000,000

$260,000,000

$250,000,000

$250,000,000

'

'

'

'

'

'

Proceeds from issuance of debt

'

'

424,750,000

189,681,000

'

'

'

'

'

'

25,000,000

'

'

'

'

282,800,000

'

'

'

'

'

Premium of debt instrument

14,730,000

'

14,730,000

'

'

'

'

'

'

'

'

'

'

'

'

22,800,000

'

'

'

'

'

Quarterly principal repayments percentage

'

'

'

'

'

'

'

'

'

'

0.25%

'

'

'

'

'

'

'

'

'

'

Frequency of periodic payment

'

'

'

'

'

'

'

'

'

'

'Term Debt on the last business day of each March, June, September and December.

'

'

'

'

'

'

'

'

'

'

Change in interest rate

'

'

'

'

'

'

'

'

'

'

1.00%

'

'

'

'

'

'

'

'

'

'

Credit facility revolving commitments

'

'

'

'

'

'

'

'

150,000,000

'

'

'

'

'

'

'

'

'

'

'

'

Maturity date of debt instrument

'

'

'

'

'

'

'

'

30-Jan-17

'

'

'

'

'

'

'

'

'

'

'

'

Basis spread on variable rate

'

'

'

'

'

3.25%

0.50%

1.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

Maximum borrowing capacity

'

'

'

'

'

'

'

'

62,200,000

'

'

'

'

'

'

'

'

'

'

'

'

Outstanding letters of credit

65,000,000

'

65,000,000

'

26,000,000

'

'

'

'

22,800,000

'

'

'

'

'

'

'

'

'

'

'

First lien leverage ratio

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

4.75

4.5

4.25

'

'

Interest coverage ratio, maximum

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.7

1.85

Accrued interest on long term debt

27,400,000

'

27,400,000

'

17,100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest expense

19,300,000

12,800,000

36,500,000

24,600,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Deferred financing fees, net

$16,300,000

'

$16,300,000

'

$11,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Commitments_and_Contingencies_

Commitments and Contingencies - Additional Information (Detail) (USD $)	6 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Jun. 28, 2014	Dec. 31, 2012	Dec. 31, 2011	Dec. 28, 2013	Jun. 29, 2013
Loss Contingencies [Line Items]	'	'	'	'	'
Amount funded for loss incurred by joint venture	$8.80	$4	$4.80	'	'
Accrual recorded in other noncurrent liabilities	4.3	'	'	4.3	'
Unapproved change orders and claims	4	'	'	3.2	'
Unapproved change orders within costs in excess of billings	0.5	'	'	0.5	'
Unapproved change orders within accounts receivable	1.2	'	'	'	'
Unapproved change orders within other current assets	2.3	'	'	2.7	'
Charges recognized for lost product included in accrued expenses	0.4	'	'	0.9	'
Charges recognized for lost product	'	'	'	'	$1.80
Maximum [Member]	'	'	'	'	'
Loss Contingencies [Line Items]	'	'	'	'	'
Duration of commitments	'1 year	'	'	'	'

Supplemental_Cash_Flow_Informa2

Supplemental Cash Flow Information - Schedule of Supplemental Cash Flow Information (Detail) (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 28, 2014	Jun. 29, 2013
Cash payments:	'	'
Interest	$25,881	$31,439
Income taxes	$1,320	$653

Segment_Information_Additional

Segment Information - Additional Information (Detail)	6 Months Ended
	Jun. 28, 2014
	Segment
Segment Reporting [Abstract]	'
Number of operating segments	3

Segment_Information_Summary_of

Segment Information - Summary of Financial Data for Company's Reportable Business Segments (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013	Dec. 28, 2013
Segment Reporting Information [Line Items]	'	'	'	'	'
Total revenue	$324,295	$254,842	$475,386	$361,671	'
Income (loss) from continuing operations before taxes	12,968	-482	-40,676	-59,257	'
Total capital expenditures	'	'	49,260	40,528	'
Interest expense	21,651	14,482	40,470	27,849	'
Total assets	1,617,640	'	1,617,640	'	1,247,794
Depreciation, depletion, amortization and accretion	21,339	18,894	40,695	36,026	'
Total revenue	324,295	254,842	475,386	361,671	'
Operating Segments [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Total capital expenditures	'	'	46,829	39,762	'
Total assets	1,602,312	'	1,602,312	'	1,233,451
Depreciation, depletion, amortization and accretion	21,002	18,872	40,053	35,982	'
Operating Segments [Member] | Aggregates [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Total revenue	59,816	47,439	91,365	68,304	'
Total revenue	59,816	47,439	91,365	68,304	'
Operating Segments [Member] | Cement [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Total revenue	26,181	21,474	33,387	30,914	'
Total revenue	26,181	21,474	33,387	30,914	'
Operating Segments [Member] | Ready Mixed Concrete [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Total revenue	71,389	33,279	113,769	46,412	'
Total revenue	71,389	33,279	113,769	46,412	'
Operating Segments [Member] | Asphalt [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Total revenue	74,686	55,857	99,082	75,208	'
Total revenue	74,686	55,857	99,082	75,208	'
Operating Segments [Member] | Paving and Related Services [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Total revenue	143,918	125,536	199,420	171,946	'
Total revenue	143,918	125,536	199,420	171,946	'
Operating Segments [Member] | West Region [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Total revenue	172,236	119,656	267,130	179,719	'
Income (loss) from continuing operations before taxes	30,750	6,807	32,541	85	'
Total capital expenditures	'	'	17,924	14,194	'
Total assets	664,913	'	664,913	'	383,544
Depreciation, depletion, amortization and accretion	7,667	6,456	14,414	12,291	'
Total revenue	172,236	119,656	267,130	179,719	'
Operating Segments [Member] | Central Region [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Total revenue	109,117	92,780	156,659	128,680	'
Income (loss) from continuing operations before taxes	28,823	25,136	28,400	19,182	'
Total capital expenditures	'	'	23,372	19,826	'
Total assets	697,318	'	697,318	'	657,421
Depreciation, depletion, amortization and accretion	9,504	8,687	18,351	16,329	'
Total revenue	109,117	92,780	156,659	128,680	'
Operating Segments [Member] | East Region [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Total revenue	42,942	42,406	51,597	53,272	'
Income (loss) from continuing operations before taxes	7,932	7,155	-1,406	-2,377	'
Total capital expenditures	'	'	5,533	5,742	'
Total assets	240,081	'	240,081	'	192,486
Depreciation, depletion, amortization and accretion	3,831	3,729	7,288	7,362	'
Total revenue	42,942	42,406	51,597	53,272	'
Corporate and Other [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Income (loss) from continuing operations before taxes	-11,547	-6,204	-19,046	-12,272	'
Total capital expenditures	'	'	2,431	766	'
Total assets	15,328	'	15,328	'	14,343
Depreciation, depletion, amortization and accretion	337	22	642	44	'
Operating Segment and Corporate and Other [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Income (loss) from continuing operations before taxes	55,958	32,894	40,489	4,618	'
Segment Reconciling Items [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Interest expense	21,651	14,482	40,470	27,849	'
Depreciation, depletion, amortization and accretion	21,339	18,894	40,695	36,026	'
Other [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Total revenue	-51,695	-28,743	-61,637	-31,113	'
Total revenue	($51,695)	($28,743)	($61,637)	($31,113)	'

Related_Party_Transactions_Add

Related Party Transactions - Additional Information (Detail) (USD $)	3 Months Ended			6 Months Ended		12 Months Ended
	Jun. 28, 2014	Mar. 29, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013	Dec. 28, 2013
Related Party Transaction [Line Items]	'	'	'	'	'	'
Revenue from unconsolidated affiliates	'	'	$400,000	'	$400,000	'
Accounts receivable from affiliates	0	'	'	0	'	400,000
Assets sold to related party	'	'	'	2,300,000	'	'
Blackstone Management Partners L.L.C. [Member]	'	'	'	'	'	'
Related Party Transaction [Line Items]	'	'	'	'	'	'
Management fees incurred	1,300,000	'	600,000	2,300,000	1,200,000	'
Consideration of Consolidated profit	'	'	'	'$300,000 or 2.0% which ever is higher	'	'
Payment for services	'	'	'	300,000	'	'
Percentage transaction fee on value of entity acquired	'	'	'	1.00%	'	'
Consideration paid / received on assets acquired / disposed	1.00%	'	'	1.00%	'	'
Payments to related parties	600,000	'	'	2,300,000	'	'
Continental Cement Company, L.L.C. [Member]	'	'	'	'	'	'
Related Party Transaction [Line Items]	'	'	'	'	'	'
Sales to related parties	4,500,000	'	3,500,000	6,200,000	5,100,000	'
Accounts receivables due from related parties	1,200,000	'	'	1,200,000	'	200,000
Non controlling interest owned	'	700,000	'	'	'	700,000
Blackstone Advisory Partners L P [Member]	'	'	'	'	'	'
Related Party Transaction [Line Items]	'	'	'	'	'	'
Related party transactions	'	'	'	$13,000,000	'	'

Senior_Notes_Guarantor_and_Non2

Senior Notes' Guarantor and Non-Guarantor Financial Information - Schedule of Condensed Consolidating Balance Sheets (Detail) (USD $)	Jun. 28, 2014	Dec. 28, 2013
In Thousands, unless otherwise specified
Current assets:	'	'
Cash	$20,802	$14,917
Accounts receivable, net	143,768	99,337
Intercompany receivables	0	'
Cost and estimated earnings in excess of billings	21,779	10,767
Inventories	119,171	96,432
Other current assets	13,235	13,181
Total current assets	318,755	234,634
Property, plant and equipment, net	920,513	831,778
Goodwill	317,323	127,038
Intangible assets, net	15,275	15,147
Other assets	45,774	39,197
Total assets	1,617,640	1,247,794
Current liabilities:	'	'
Current portion of debt	69,220	30,220
Current portion of acquisition-related liabilities	19,039	10,635
Accounts payable	78,244	72,104
Accrued expenses	87,913	57,251
Intercompany payables	0	'
Billings in excess of costs and estimated earnings	4,902	9,263
Total current liabilities	259,318	179,473
Long-term debt	938,290	658,767
Acquisition-related liabilities	40,947	23,756
Other noncurrent liabilities	83,415	77,480
Total liabilities	1,321,970	939,476
Redeemable noncontrolling interest	26,825	24,767
Redeemable members' interest	0	'
Total member's interest	268,845	283,551
Total liabilities, redeemable noncontrolling interest and member's interest	1,617,640	1,247,794
Issuers [Member]	'	'
Current assets:	'	'
Cash	21,685	10,375
Accounts receivable, net	0	'
Intercompany receivables	264,955	38,134
Cost and estimated earnings in excess of billings	0	'
Inventories	0	'
Other current assets	2,791	750
Total current assets	289,431	49,259
Property, plant and equipment, net	5,755	3,969
Goodwill	0	'
Intangible assets, net	0	'
Other assets	499,692	296,494
Total assets	794,878	349,722
Current liabilities:	'	'
Current portion of debt	69,220	26,010
Current portion of acquisition-related liabilities	1,141	2,000
Accounts payable	4,517	5,455
Accrued expenses	25,566	12,041
Intercompany payables	101,411	'
Billings in excess of costs and estimated earnings	0	'
Total current liabilities	201,855	45,506
Long-term debt	938,290	19,587
Acquisition-related liabilities	0	85
Other noncurrent liabilities	879	959
Total liabilities	1,141,024	66,137
Redeemable noncontrolling interest	0	'
Redeemable members' interest	0	'
Total member's interest	-346,146	283,585
Total liabilities, redeemable noncontrolling interest and member's interest	794,878	349,722
Non-Wholly-Owned Guarantor [Member]	'	'
Current assets:	'	'
Cash	7	9
Accounts receivable, net	12,338	4,587
Intercompany receivables	0	3,433
Cost and estimated earnings in excess of billings	0	'
Inventories	14,569	10,402
Other current assets	722	444
Total current assets	27,636	18,875
Property, plant and equipment, net	305,274	301,908
Goodwill	23,124	23,124
Intangible assets, net	592	642
Other assets	20,378	17,973
Total assets	377,004	362,522
Current liabilities:	'	'
Current portion of debt	1,018	1,018
Current portion of acquisition-related liabilities	0	'
Accounts payable	7,978	9,387
Accrued expenses	7,691	9,185
Intercompany payables	21,810	'
Billings in excess of costs and estimated earnings	0	'
Total current liabilities	38,497	19,590
Long-term debt	154,081	154,590
Acquisition-related liabilities	0	'
Other noncurrent liabilities	17,570	20,306
Total liabilities	210,148	194,486
Redeemable noncontrolling interest	0	'
Redeemable members' interest	23,750	23,450
Total member's interest	143,106	144,586
Total liabilities, redeemable noncontrolling interest and member's interest	377,004	362,522
Wholly-Owned Guarantors [Member]	'	'
Current assets:	'	'
Cash	2,681	3,442
Accounts receivable, net	128,876	93,102
Intercompany receivables	33,532	30,787
Cost and estimated earnings in excess of billings	21,018	10,539
Inventories	102,293	85,372
Other current assets	9,645	11,715
Total current assets	298,045	234,957
Property, plant and equipment, net	602,744	518,935
Goodwill	293,227	102,942
Intangible assets, net	14,683	14,505
Other assets	63,234	37,535
Total assets	1,271,933	908,874
Current liabilities:	'	'
Current portion of debt	3,192	3,192
Current portion of acquisition-related liabilities	17,898	8,635
Accounts payable	64,426	57,142
Accrued expenses	62,068	37,342
Intercompany payables	174,376	71,556
Billings in excess of costs and estimated earnings	4,877	8,837
Total current liabilities	326,837	186,704
Long-term debt	482,993	484,590
Acquisition-related liabilities	40,947	23,671
Other noncurrent liabilities	64,966	56,215
Total liabilities	915,743	751,180
Redeemable noncontrolling interest	0	'
Redeemable members' interest	0	'
Total member's interest	356,190	157,694
Total liabilities, redeemable noncontrolling interest and member's interest	1,271,933	908,874
Non-Guarantors [Member]	'	'
Current assets:	'	'
Cash	4,723	3,631
Accounts receivable, net	4,922	3,100
Intercompany receivables	0	'
Cost and estimated earnings in excess of billings	761	228
Inventories	2,309	658
Other current assets	375	272
Total current assets	13,090	7,889
Property, plant and equipment, net	6,740	6,966
Goodwill	972	972
Intangible assets, net	0	'
Other assets	1,235	1,303
Total assets	22,037	17,130
Current liabilities:	'	'
Current portion of debt	0	'
Current portion of acquisition-related liabilities	0	'
Accounts payable	3,691	1,572
Accrued expenses	1,180	1,223
Intercompany payables	890	798
Billings in excess of costs and estimated earnings	25	426
Total current liabilities	5,786	4,019
Long-term debt	0	'
Acquisition-related liabilities	0	'
Other noncurrent liabilities	0	'
Total liabilities	5,786	4,019
Redeemable noncontrolling interest	0	'
Redeemable members' interest	0	'
Total member's interest	16,251	13,111
Total liabilities, redeemable noncontrolling interest and member's interest	22,037	17,130
Eliminations [Member]	'	'
Current assets:	'	'
Cash	-8,294	-2,540
Accounts receivable, net	-2,368	-1,452
Intercompany receivables	-298,487	-72,354
Cost and estimated earnings in excess of billings	0	'
Inventories	0	'
Other current assets	-298	'
Total current assets	-309,447	-76,346
Property, plant and equipment, net	0	'
Goodwill	0	'
Intangible assets, net	0	'
Other assets	-538,765	-314,108
Total assets	-848,212	-390,454
Current liabilities:	'	'
Current portion of debt	-4,210	'
Current portion of acquisition-related liabilities	0	'
Accounts payable	-2,368	-1,452
Accrued expenses	-8,592	-2,540
Intercompany payables	-298,487	-72,354
Billings in excess of costs and estimated earnings	0	'
Total current liabilities	-313,657	-76,346
Long-term debt	-637,074	'
Acquisition-related liabilities	0	'
Other noncurrent liabilities	0	'
Total liabilities	-950,731	-76,346
Redeemable noncontrolling interest	26,825	24,767
Redeemable members' interest	-23,750	-23,450
Total member's interest	99,444	-315,425
Total liabilities, redeemable noncontrolling interest and member's interest	($848,212)	($390,454)

Senior_Notes_Guarantor_and_Non3

Senior Notes' Guarantor and Non-Guarantor Financial Information - Schedule of Condensed Consolidating Statements of Operations (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Revenue	$324,295	$254,842	$475,386	$361,671
Cost of revenue (excluding items shown separately below)	231,762	181,843	360,437	277,916
General and administrative expenses	34,867	39,392	70,355	73,395
Depreciation, depletion, amortization and accretion	21,339	18,894	40,695	36,026
Operating income (loss)	33,922	13,731	-1,097	-28,130
Other (income) expense, net	-697	-269	-891	163
Interest expense	21,651	14,482	40,470	27,849
Income (loss) from continuing operations before taxes	12,968	-482	-40,676	-59,257
Income tax benefit (expense)	-864	-726	-1,460	-3,347
(Loss) income from continuing operations	13,832	244	-39,216	-55,910
Loss (income) from discontinued operations	-369	-26	-349	97
Net (loss) income	14,201	270	-38,867	-56,007
Net (loss) income attributable to noncontrolling interest	1,946	1,939	-569	-1,518
Net (loss) income attributable to member of Summit Materials, LLC	12,255	-1,669	-38,298	-54,489
Comprehensive (loss) income attributable to member of Summit Materials, LLC	12,255	-1,669	-37,725	-54,489
Issuers [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Revenue	0	'	0	'
Cost of revenue (excluding items shown separately below)	0	'	0	'
General and administrative expenses	10,002	1,244	17,690	2,896
Depreciation, depletion, amortization and accretion	338	22	642	44
Operating income (loss)	-10,340	-1,266	-18,332	-2,940
Other (income) expense, net	-29,100	403	7,725	51,549
Interest expense	7,932	'	13,668	'
Income (loss) from continuing operations before taxes	10,828	-1,669	-39,725	-54,489
Income tax benefit (expense)	-1,427	'	-1,427	'
(Loss) income from continuing operations	12,255	-1,669	-38,298	-54,489
Loss (income) from discontinued operations	0	'	0	'
Net (loss) income	12,255	-1,669	-38,298	-54,489
Net (loss) income attributable to noncontrolling interest	0	'	0	'
Net (loss) income attributable to member of Summit Materials, LLC	12,255	-1,669	-38,298	-54,489
Comprehensive (loss) income attributable to member of Summit Materials, LLC	12,255	'	-38,298	'
Non-Wholly-Owned Guarantor [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Revenue	27,557	22,888	35,264	32,799
Cost of revenue (excluding items shown separately below)	16,724	13,328	27,626	27,833
General and administrative expenses	1,900	1,695	3,574	5,083
Depreciation, depletion, amortization and accretion	3,703	2,868	6,777	5,532
Operating income (loss)	5,230	4,997	-2,713	-5,649
Other (income) expense, net	-1,261	-1,240	-1,358	-1,295
Interest expense	3,011	2,692	5,857	5,423
Income (loss) from continuing operations before taxes	3,480	3,545	-7,212	-9,777
Income tax benefit (expense)	0	'	0	'
(Loss) income from continuing operations	3,480	3,545	-7,212	-9,777
Loss (income) from discontinued operations	0	'	0	'
Net (loss) income	3,480	3,545	-7,212	-9,777
Net (loss) income attributable to noncontrolling interest	0	'	0	'
Net (loss) income attributable to member of Summit Materials, LLC	3,480	3,545	-7,212	-9,777
Comprehensive (loss) income attributable to member of Summit Materials, LLC	3,480	'	-6,394	'
Wholly-Owned Guarantors [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Revenue	287,307	221,141	427,717	314,895
Cost of revenue (excluding items shown separately below)	210,693	162,633	328,318	243,357
General and administrative expenses	25,080	37,121	53,521	67,296
Depreciation, depletion, amortization and accretion	17,020	15,743	32,731	29,938
Operating income (loss)	34,514	5,644	13,147	-25,696
Other (income) expense, net	-1,360	-1,632	-1,553	1,529
Interest expense	12,643	12,825	24,415	24,095
Income (loss) from continuing operations before taxes	23,231	-5,549	-9,715	-51,320
Income tax benefit (expense)	563	-726	-33	-3,347
(Loss) income from continuing operations	22,668	-4,823	-9,682	-47,973
Loss (income) from discontinued operations	-369	-26	-349	97
Net (loss) income	23,037	-4,797	-9,333	-48,070
Net (loss) income attributable to noncontrolling interest	0	'	0	'
Net (loss) income attributable to member of Summit Materials, LLC	23,037	-4,797	-9,333	-48,070
Comprehensive (loss) income attributable to member of Summit Materials, LLC	23,037	'	-9,333	'
Non-Guarantors [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Revenue	14,942	14,559	21,274	20,486
Cost of revenue (excluding items shown separately below)	9,856	9,628	13,362	13,235
General and administrative expenses	290	314	566	584
Depreciation, depletion, amortization and accretion	278	261	545	512
Operating income (loss)	4,518	4,356	6,801	6,155
Other (income) expense, net	-3	47	45	174
Interest expense	31	114	56	239
Income (loss) from continuing operations before taxes	4,490	4,195	6,700	5,742
Income tax benefit (expense)	0	'	0	'
(Loss) income from continuing operations	4,490	4,195	6,700	5,742
Loss (income) from discontinued operations	0	'	0	'
Net (loss) income	4,490	4,195	6,700	5,742
Net (loss) income attributable to noncontrolling interest	0	'	0	'
Net (loss) income attributable to member of Summit Materials, LLC	4,490	4,195	6,700	5,742
Comprehensive (loss) income attributable to member of Summit Materials, LLC	4,490	'	6,700	'
Eliminations [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Revenue	-5,511	-3,746	-8,869	-6,509
Cost of revenue (excluding items shown separately below)	-5,511	-3,746	-8,869	-6,509
General and administrative expenses	0	'	0	'
Depreciation, depletion, amortization and accretion	0	'	0	'
Operating income (loss)	0	'	0	'
Other (income) expense, net	31,027	2,153	-5,750	-48,679
Interest expense	-1,966	-1,149	-3,526	-1,908
Income (loss) from continuing operations before taxes	-29,061	-1,004	9,276	50,587
Income tax benefit (expense)	0	'	0	'
(Loss) income from continuing operations	-29,061	-1,004	9,276	50,587
Loss (income) from discontinued operations	0	'	0	'
Net (loss) income	-29,061	-1,004	9,276	50,587
Net (loss) income attributable to noncontrolling interest	1,946	1,939	-569	-1,518
Net (loss) income attributable to member of Summit Materials, LLC	-31,007	-2,943	9,845	52,105
Comprehensive (loss) income attributable to member of Summit Materials, LLC	($31,007)	'	$9,600	'

Senior_Notes_Guarantor_and_Non4

Senior Notes' Guarantor and Non-Guarantor Financial Information - Schedule of Condensed Consolidating Statements of Cash Flows (Detail) (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 28, 2014	Jun. 29, 2013
Condensed Financial Statements, Captions [Line Items]	'	'
Net cash (used in) provided by operating activities	($45,880)	($47,760)
Cash flow from investing activities:	'	'
Acquisitions, net of cash acquired	-234,870	-60,779
Purchase of property, plant and equipment	-49,260	-40,528
Proceeds from the sale of property, plant, and equipment	5,985	7,086
Other	757	'
Net cash used for investing activities	-277,388	-94,221
Cash flow from financing activities:	'	'
Proceeds from investment by member	24,350	'
Net proceeds from debt issuance	424,750	189,681
Loans received from and payments made on loans from other Summit Companies	0	'
Payments on long-term debt	-109,246	-61,343
Payments on acquisition-related liabilities	-4,259	-3,426
Financing costs	-6,354	-2,707
Other	-88	'
Net cash provided by financing activities	329,153	122,205
Net increase (decrease) in cash	5,885	-19,776
Cash-beginning of period	14,917	27,431
Cash-end of period	20,802	7,655
Issuers [Member]	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Net cash (used in) provided by operating activities	-18,665	-28
Cash flow from investing activities:	'	'
Acquisitions, net of cash acquired	-181,754	'
Purchase of property, plant and equipment	-2,428	-766
Proceeds from the sale of property, plant, and equipment	0	'
Other	0	'
Net cash used for investing activities	-184,182	-766
Cash flow from financing activities:	'	'
Proceeds from investment by member	24,350	'
Net proceeds from debt issuance	424,750	189,681
Loans received from and payments made on loans from other Summit Companies	-123,441	-124,587
Payments on long-term debt	-104,060	-61,343
Payments on acquisition-related liabilities	-1,000	'
Financing costs	-6,354	-2,707
Other	-88	'
Net cash provided by financing activities	214,157	1,044
Net increase (decrease) in cash	11,310	250
Cash-beginning of period	10,375	697
Cash-end of period	21,685	947
Non-Wholly-Owned Guarantor [Member]	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Net cash (used in) provided by operating activities	-13,153	-12,542
Cash flow from investing activities:	'	'
Acquisitions, net of cash acquired	0	'
Purchase of property, plant and equipment	-11,829	-15,214
Proceeds from the sale of property, plant, and equipment	0	'
Other	0	'
Net cash used for investing activities	-11,829	-15,214
Cash flow from financing activities:	'	'
Proceeds from investment by member	0	'
Net proceeds from debt issuance	0	'
Loans received from and payments made on loans from other Summit Companies	25,234	27,367
Payments on long-term debt	-254	'
Payments on acquisition-related liabilities	0	'
Financing costs	0	'
Other	0	'
Net cash provided by financing activities	24,980	27,367
Net increase (decrease) in cash	-2	-389
Cash-beginning of period	9	397
Cash-end of period	7	8
Wholly-Owned Guarantors [Member]	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Net cash (used in) provided by operating activities	-13,412	-39,989
Cash flow from investing activities:	'	'
Acquisitions, net of cash acquired	-53,116	-60,779
Purchase of property, plant and equipment	-34,666	-23,514
Proceeds from the sale of property, plant, and equipment	5,912	7,086
Other	-409	'
Net cash used for investing activities	-82,279	-77,207
Cash flow from financing activities:	'	'
Proceeds from investment by member	0	'
Net proceeds from debt issuance	0	'
Loans received from and payments made on loans from other Summit Companies	104,121	100,970
Payments on long-term debt	-4,932	'
Payments on acquisition-related liabilities	-3,259	-3,426
Financing costs	0	'
Other	-1,000	'
Net cash provided by financing activities	94,930	97,544
Net increase (decrease) in cash	-761	-19,652
Cash-beginning of period	3,442	30,981
Cash-end of period	2,681	11,329
Non-Guarantors [Member]	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Net cash (used in) provided by operating activities	168	4,799
Cash flow from investing activities:	'	'
Acquisitions, net of cash acquired	0	'
Purchase of property, plant and equipment	-337	-1,034
Proceeds from the sale of property, plant, and equipment	73	'
Other	0	'
Net cash used for investing activities	-264	-1,034
Cash flow from financing activities:	'	'
Proceeds from investment by member	1,166	'
Net proceeds from debt issuance	0	'
Loans received from and payments made on loans from other Summit Companies	22	-4,338
Payments on long-term debt	0	'
Payments on acquisition-related liabilities	0	'
Financing costs	0	'
Other	0	'
Net cash provided by financing activities	1,188	-4,338
Net increase (decrease) in cash	1,092	-573
Cash-beginning of period	3,631	680
Cash-end of period	4,723	107
Eliminations [Member]	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Net cash (used in) provided by operating activities	-818	'
Cash flow from investing activities:	'	'
Acquisitions, net of cash acquired	0	'
Purchase of property, plant and equipment	0	'
Proceeds from the sale of property, plant, and equipment	0	'
Other	1,166	'
Net cash used for investing activities	1,166	'
Cash flow from financing activities:	'	'
Proceeds from investment by member	-1,166	'
Net proceeds from debt issuance	0	'
Loans received from and payments made on loans from other Summit Companies	-5,936	588
Payments on long-term debt	0	'
Payments on acquisition-related liabilities	0	'
Financing costs	0	'
Other	1,000	'
Net cash provided by financing activities	-6,102	588
Net increase (decrease) in cash	-5,754	588
Cash-beginning of period	-2,540	-5,324
Cash-end of period	($8,294)	($4,736)