Summit Materials (SUM) 10-Q 3 May 17 2017 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Apr. 01, 2017	Apr. 26, 2017
Document Information [Line Items]
Entity Registrant Name	Summit Materials, Inc.
Entity Central Index Key	1,621,563
Document Type	10-Q
Document Period End Date	Apr. 1, 2017
Amendment Flag	false
Current Fiscal Year End Date	--12-30
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q1
Membership interests description	As of April 26, 2017, 100% of Summit Materials, LLC's outstanding limited liability company interests were held by Summit Materials Intermediate Holdings, LLC, its sole member and an indirect subsidiary of Summit Materials, Inc.
Common Class A
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		106,403,740
Common Class B
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		100
Summit Materials, LLC
Document Information [Line Items]
Entity Registrant Name	Summit Materials, LLC
Entity Central Index Key	1,571,371
Document Type	10-Q
Document Period End Date	Apr. 1, 2017
Amendment Flag	false
Current Fiscal Year End Date	--12-30
Entity Current Reporting Status	Yes
Entity Filer Category	Non-accelerated Filer
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q1
Membership interests percentage	100.00%

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Apr. 01, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 156,107	$ 143,392
Accounts receivable, net	154,844	162,377
Costs and estimated earnings in excess of billings	14,926	7,450
Inventories	186,998	157,679
Other current assets	12,038	12,800
Total current assets	524,913	483,698
Property, plant and equipment, net	1,528,259	1,446,452
Goodwill	848,034	782,212
Intangible assets, net	17,685	17,989
Other assets	52,972	51,115
Total assets	2,971,863	2,781,466
Current liabilities:
Current portion of debt	6,500	6,500
Current portion of acquisition-related liabilities	17,852	24,162
Accounts payable	105,390	81,565
Accrued expenses	100,720	111,605
Billings in excess of costs and estimated earnings	12,860	15,456
Total current liabilities	243,322	239,288
Long-term debt	1,513,057	1,514,456
Acquisition-related liabilities	33,715	32,664
Other noncurrent liabilities	134,049	135,019
Total liabilities	1,924,143	1,921,427
Commitments and contingencies
Stockholders' equity / Member's interest
Additional paid-in capital	1,068,156	824,304
Accumulated (deficit) earnings	(33,416)	19,028
Accumulated other comprehensive loss	(1,186)	(2,249)
Stockholders' equity	1,034,619	842,044
Noncontrolling interest in consolidated subsidiaries	1,280	1,378
Noncontrolling interest in Summit Materials, Inc.	11,821	16,617
Total stockholders' equity	1,047,720	860,039
Total liabilities and stockholders' equity / member's interest	2,971,863	2,781,466
Common Class A
Stockholders' equity / Member's interest
Common stock	1,065	961
Summit Materials, LLC
Current assets:
Cash and cash equivalents	156,107	142,672
Accounts receivable, net	154,844	162,377
Costs and estimated earnings in excess of billings	14,926	7,450
Inventories	186,998	157,679
Other current assets	12,038	12,800
Total current assets	524,913	482,978
Property, plant and equipment, net	1,528,259	1,446,452
Goodwill	848,034	782,212
Intangible assets, net	17,685	17,989
Other assets	46,303	46,789
Total assets	2,965,194	2,776,420
Current liabilities:
Current portion of debt	6,500	6,500
Current portion of acquisition-related liabilities	15,352	21,663
Accounts payable	104,782	81,610
Accrued expenses	100,720	110,473
Billings in excess of costs and estimated earnings	12,860	15,456
Total current liabilities	240,214	235,702
Long-term debt	1,513,057	1,514,456
Acquisition-related liabilities	28,459	25,161
Other noncurrent liabilities	121,379	124,708
Total liabilities	1,903,109	1,900,027
Commitments and contingencies
Stockholders' equity / Member's interest
Member's equity	1,326,986	1,087,558
Accumulated (deficit) earnings	(239,855)	(185,099)
Accumulated other comprehensive loss	(26,326)	(27,444)
Member's interest	1,060,805	875,015
Noncontrolling interest	1,280	1,378
Total member's interest	1,062,085	876,393
Total liabilities and stockholders' equity / member's interest	$ 2,965,194	$ 2,776,420

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Apr. 01, 2017	Dec. 31, 2016
Property, plant and equipment, accumulated depreciation, depletion and amortization	$ 518,554	$ 484,554
Intangible assets, accumulated amortization	5,700	7,854
Summit Materials, LLC
Property, plant and equipment, accumulated depreciation, depletion and amortization	518,554	484,554
Intangible assets, accumulated amortization	$ 5,700	$ 7,854
Common Class A
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	1,000,000,000	1,000,000,000
Common stock, shares issued	106,403,740	96,033,222
Common stock, shares outstanding	106,403,740	96,033,222
Common Class B
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	250,000,000	250,000,000
Common stock, shares issued	100	100
Common stock, shares outstanding	100	100

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended
	Apr. 01, 2017	Apr. 02, 2016
Revenue:
Product	$ 225,017	$ 180,102
Service	34,027	27,937
Net revenue	259,044	208,039
Delivery and subcontract revenue	25,233	20,340
Total revenue	284,277	228,379
Cost of revenue (excluding items shown separately below):
Product	166,968	132,396
Service	25,371	24,054
Net cost of revenue	192,339	156,450
Delivery and subcontract cost	25,233	20,340
Total cost of revenue	217,572	176,790
General and administrative expenses	58,468	45,370
Depreciation, depletion, amortization and accretion	39,748	32,360
Transaction costs	1,273	3,316
Operating loss	(32,784)	(29,457)
Interest expense	24,969	21,577
Loss on debt financings	190
Other expense (income), net	(657)	(334)
Loss from operations before taxes	(57,286)	(50,700)
Income tax benefit	(2,178)	(8,166)
Net loss	(55,108)	(42,534)
Net loss attributable to noncontrolling interest in subsidiaries	(98)	(79)
Net loss attributable to Summit Holdings	(2,566)	(21,337)
Net loss attributable to Summit Materials, Inc. / member of Summit Materials, LLC	(52,444)	(21,118)
Summit Materials, LLC
Revenue:
Product	225,017	180,102
Service	34,027	27,937
Net revenue	259,044	208,039
Delivery and subcontract revenue	25,233	20,340
Total revenue	284,277	228,379
Cost of revenue (excluding items shown separately below):
Product	166,968	132,396
Service	25,371	24,054
Net cost of revenue	192,339	156,450
Delivery and subcontract cost	25,233	20,340
Total cost of revenue	217,572	176,790
General and administrative expenses	58,468	45,370
Depreciation, depletion, amortization and accretion	39,748	32,360
Transaction costs	1,273	3,316
Operating loss	(32,784)	(29,457)
Interest expense	24,715	21,286
Loss on debt financings	190
Other expense (income), net	(657)	(351)
Loss from operations before taxes	(57,032)	(50,392)
Income tax benefit	(2,178)	(8,149)
Net loss	(54,854)	(42,243)
Net loss attributable to noncontrolling interest	(98)	(79)
Net loss attributable to Summit Materials, Inc. / member of Summit Materials, LLC	$ (54,756)	$ (42,164)
Common Class A
Loss per share of Class A common stock:
Basic	$ (0.50)	$ (0.42)
Diluted	$ (0.50)	$ (0.42)
Weighted average shares of Class A common stock:
Basic	105,171,661	50,882,663
Diluted	105,171,661	50,882,663

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Operations - USD ($) $ in Thousands	3 Months Ended
	Apr. 01, 2017	Apr. 02, 2016
Net income (loss)	$ (55,108)	$ (42,534)
Other comprehensive income (loss):
Foreign currency translation adjustment	706	4,642
Income (loss) on cash flow hedges	412	(2,234)
Other comprehensive income (loss)	1,118	2,408
Comprehensive loss	(53,990)	(40,126)
Less comprehensive loss attributable to the noncontrolling interest in consolidated subsidiaries	(98)	(79)
Less comprehensive loss attributable Summit Holdings	(2,511)	(20,127)
Comprehensive loss attributable to Summit Materials, Inc. / Summit Materials, LLC	(51,381)	(19,920)
Summit Materials, LLC
Net income (loss)	(54,854)	(42,243)
Other comprehensive income (loss):
Foreign currency translation adjustment	706	4,642
Income (loss) on cash flow hedges	412	(2,234)
Other comprehensive income (loss)	1,118	2,408
Comprehensive loss	(53,736)	(39,835)
Less comprehensive loss attributable to noncontrolling interest	(98)	(79)
Comprehensive loss attributable to Summit Materials, Inc. / Summit Materials, LLC	$ (53,638)	$ (39,756)

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Apr. 01, 2017	Apr. 02, 2016
Cash flow from operating activities:
Net income (loss)	$ (55,108)	$ (42,534)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation, depletion, amortization and accretion	43,343	36,817
Share-based compensation expense	4,748	2,036
Deferred income tax benefit	(2,354)	(17)
Net gain on asset disposals	(1,665)	(1,683)
Net loss on debt financings	85
Other	783	130
Decrease increase in operating assets, net of acquisitions:
Accounts receivable, net	13,847	22,281
Inventories	(24,677)	(25,612)
Costs and estimated earnings in excess of billings	(7,480)	(1,981)
Other current assets	1,494	(9,583)
Other assets	(726)	351
Increase (decrease) in operating liabilities, net of acquisitions:
Accounts payable	4,169	(618)
Accrued expenses	(20,664)	(17,890)
Billings in excess of costs and estimated earnings	(2,703)	(2,552)
Other liabilities	1,369	(1,103)
Net cash used in operating activities	(45,539)	(41,958)
Cash flow from investing activities:
Acquisitions, net of cash acquired	(112,333)	(249,111)
Purchases of property, plant and equipment	(51,056)	(39,125)
Proceeds from the sale of property, plant and equipment	4,325	6,019
Other	974
Net cash used for investing activities	(158,090)	(282,217)
Cash flow from financing activities:
Proceeds from equity offerings	237,600
Capital issuance costs	(638)
Proceeds from debt issuances		250,000
Debt issuance costs	(699)	(5,001)
Payments on debt	(3,566)	(3,458)
Payments on acquisition-related liabilities	(16,414)	(11,973)
Distributions	(79)
Net cash provided by financing activities	216,244	229,568
Impact of cash on foreign currency	100	446
Net increase (decrease) in cash	12,715	(94,161)
Cash and cash equivalents-beginning of period	143,392	186,405
Cash and cash equivalents-end of period	156,107	92,244
Summit Materials, LLC
Cash flow from operating activities:
Net income (loss)	(54,854)	(42,243)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation, depletion, amortization and accretion	43,088	36,526
Share-based compensation expense	4,748	2,036
Deferred income tax benefit	(2,354)
Net gain on asset disposals	(1,665)	(1,683)
Net loss on debt financings	85
Other	783	130
Decrease increase in operating assets, net of acquisitions:
Accounts receivable, net	13,847	22,281
Inventories	(24,677)	(25,612)
Costs and estimated earnings in excess of billings	(7,480)	(1,981)
Other current assets	1,494	(9,583)
Other assets	(743)	351
Increase (decrease) in operating liabilities, net of acquisitions:
Accounts payable	3,517	(618)
Accrued expenses	(19,531)	(17,907)
Billings in excess of costs and estimated earnings	(2,703)	(2,552)
Other liabilities	1,369	(1,103)
Net cash used in operating activities	(45,076)	(41,958)
Cash flow from investing activities:
Acquisitions, net of cash acquired	(112,333)	(249,111)
Purchases of property, plant and equipment	(51,056)	(39,125)
Proceeds from the sale of property, plant and equipment	4,325	6,019
Other	974
Net cash used for investing activities	(158,090)	(282,217)
Cash flow from financing activities:
Capital contributions by member	238,629
Capital issuance costs	(638)
Proceeds from debt issuances		250,000
Debt issuance costs	(699)	(5,001)
Payments on debt	(3,566)	(3,458)
Payments on acquisition-related liabilities	(13,914)	(9,473)
Distributions	(2,579)	(2,500)
Other	(732)
Net cash provided by financing activities	216,501	229,568
Impact of cash on foreign currency	100	446
Net increase (decrease) in cash	13,435	(94,161)
Cash and cash equivalents-beginning of period	142,672	185,388
Cash and cash equivalents-end of period	$ 156,107	$ 91,227

Consolidated Statements of Chan

Consolidated Statements of Changes in Stockholders' Equity / Member's Interest and Redeemable Noncontrolling Interest - USD ($)	Summit Materials, LLCMembers' equity	Summit Materials, LLCTotal Member's Interest	Summit Materials, LLCNoncontrolling Interest in subsidiaries	Summit Materials, LLCAccumulated Earnings/Deficit	Summit Materials, LLCAccumulated Other Comprehensive Operations	Summit Materials, LLC	Noncontrolling Interest in subsidiaries	Accumulated Earnings/Deficit	Accumulated Other Comprehensive Operations	Common StockCommon Class A	Common StockCommon Class B	Additional Paid-in CapitalCommon Class A	Additional Paid-in Capital	Noncontrolling Interest in Summit Inc.	Common Class A	Common Class B	Total
Beginning Balance at Jan. 02, 2016							$ 1,362,000
Beginning Balance at Jan. 02, 2016								$ 10,870,000	$ (2,795,000)	$ 497,000	$ 690,000		$ 619,003,000	$ 138,233,000			$ 767,860,000
Beginning Balance at Jan. 02, 2016	$ 1,050,882,000	$ 778,292,000	$ 1,362,000	$ (245,486,000)	$ (28,466,000)
Beginning Balance (in shares) at Jan. 02, 2016										49,745,944	69,007,297
Increase (decrease) in stockholders' equity / members' interest and redeemable noncontrolling interest
Net contributed capital	(115,000)	(115,000)
Net income (loss)		(42,243,000)	(79,000)	(42,164,000)		$ (42,243,000)		(21,118,000)						(21,337,000)			(42,534,000)
Net loss							(79,000)
Issuance of Shares										$ 1,000		$ (115,000)					(114,000)
Issuance of Shares (in shares)										1,038
Other comprehensive income (loss)		2,408,000			2,408,000	2,408,000			1,198,000					1,210,000			2,408,000
Share-based compensation	3,720,000	2,036,000		(1,684,000)				(1,684,000)					3,720,000				2,036,000
Distributions	(2,500,000)	(2,500,000)
Ending Balance at Apr. 02, 2016								(11,932,000)	(1,597,000)	$ 498,000	$ 690,000		622,608,000	118,106,000			729,656,000
Ending Balance at Apr. 02, 2016	1,051,987,000	737,878,000	1,283,000	(289,334,000)	(26,058,000)
Ending Balance at Apr. 02, 2016							1,283,000
Ending Balance (in shares) at Apr. 02, 2016										49,746,982	69,007,297
Beginning Balance at Dec. 31, 2016							1,378,000
Beginning Balance at Dec. 31, 2016								19,028,000	(2,249,000)	$ 961,000	$ 100		824,304,000	16,617,000			860,039,000
Beginning Balance at Dec. 31, 2016	1,087,558,000	876,393,000	1,378,000	(185,099,000)	(27,444,000)	876,393,000
Beginning Balance (in shares) at Dec. 31, 2016										96,033,222					96,033,222	100
Increase (decrease) in stockholders' equity / members' interest and redeemable noncontrolling interest
Net contributed capital	237,991,000	237,991,000
Net income (loss)		(54,854,000)	(98,000)	(54,756,000)		(54,854,000)		(52,444,000)						(2,566,000)			(55,108,000)
Net loss							(98,000)
Issuance of Shares										$ 100,000			238,357,000	(1,496,000)			236,961,000
Issuance of Shares (in shares)										10,000,000
LP Unit exchanges										$ 2,000			708,000	(710,000)
LP Unit exchanges (in shares)										236,095
Other comprehensive income (loss)		1,118,000			1,118,000	1,118,000			1,063,000					55,000			1,118,000
Share-based compensation	4,748,000	4,748,000											4,748,000				4,748,000
Distributions	(2,579,000)	(2,579,000)
Distributions from partnership														(79,000)			(79,000)
Other										$ 2,000			39,000				41,000
Other (in shares)										134,423
Other	(732,000)	(732,000)
Ending Balance at Apr. 01, 2017								$ (33,416,000)	$ (1,186,000)	$ 1,065,000			$ 1,068,156,000	$ 11,821,000			$ 1,047,720,000
Ending Balance at Apr. 01, 2017	$ 1,326,986,000	$ 1,062,085,000	$ 1,280,000	$ (239,855,000)	$ (26,326,000)	$ 1,062,085,000
Ending Balance at Apr. 01, 2017							$ 1,280,000
Ending Balance (in shares) at Apr. 01, 2017										106,403,740	100				106,403,740	100

Summary of Organization and Sig

Summary of Organization and Significant Accounting Policies	3 Months Ended
	Apr. 01, 2017
Company Information
Summary of Organization and Significant Accounting Policies	1. Summit Materials, Inc. (“Summit Inc.” and, together with its subsidiaries, the “Company”) is a vertically-integrated construction materials company. The Company is engaged in the production and sale of aggregates, cement, ready-mix concrete, asphalt paving mix and concrete products and owns and operates quarries, sand and gravel pits, two cement plants, cement distribution terminals, ready-mix concrete plants, asphalt plants and landfill sites. It is also engaged in paving and related services. The Company’s three operating and reporting segments are the West, East and Cement segments. 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 services. Therefore, the financial results for any interim period are typically not 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. On September 23, 2014, Summit Inc. was formed as a Delaware corporation to be a holding company. Its sole material asset is a controlling equity interest in Summit Materials Holdings L.P. (“Summit Holdings”). Pursuant to a reorganization into a holding company structure (the “Reorganization”) consummated in connection with Summit Inc.’s March 2015 initial public offering, Summit Inc. became a holding corporation operating and controlling all of the business and affairs of Summit Holdings and its subsidiaries and, through Summit Holdings, conducts its business. Equity Offering — On January 10, 2017, Summit Inc. raised $237.6 million, net of underwriting discounts, through the issuance of 10,000,000 shares of Class A common stock at a public offering price of $24.05 per share. Summit Inc. used these proceeds to purchase an equal number of limited partnership interests in Summit Holdings (“LP Units”) and caused Summit Holdings to use a portion of the proceeds from the offering to acquire two materials-based companies for a combined purchase price of approximately $110 million in cash, with remaining net proceeds to be used for general corporate purposes, which may include, but is not limited to, funding acquisitions, repaying indebtedness, capital expenditures and funding working capital. Basis of Presentation —These unaudited consolidated financial statements were prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) for interim financial information, without audit, pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). Certain information and footnote disclosures typically included in financial statements prepared in accordance with U.S. 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 31, 2016. 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 April 1, 2017 and the results of operations and cash flows for the three months ended April 1, 2017 and April 2, 2016. Principles of Consolidation —The consolidated financial statements include the accounts of Summit Inc. and its majority owned subsidiaries. All intercompany balances and transactions have been eliminated. As a result of the Reorganization, Summit Holdings became a variable interest entity over which Summit Inc. has 100% voting power and control and for which Summit Inc. has the obligation to absorb losses and the right to receive benefits. As a result, Summit Inc. is Summit Holdings’ primary beneficiary and thus consolidates Summit Holdings in its consolidated financial statements with a corresponding noncontrolling interest elimination, which was 4.4% and 5.1% as of April 1, 2017 and December 31, 2016, respectively. Noncontrolling interests in consolidated subsidiaries represent a 20% ownership in Ohio Valley Asphalt, LLC. The Company attributes consolidated stockholders’ equity and net income separately to the controlling and noncontrolling interests. The Company accounts for investments in entities for which it has an ownership of 20% to 50% using the equity method of accounting. Use of Estimates —Preparation of these consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions. These estimates and the underlying assumptions affect the amounts of assets and liabilities reported, disclosures about contingent assets and liabilities and reported amounts of revenue and expenses. Such estimates include the valuation of accounts receivable, inventories, valuation of deferred tax assets, 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 paving and related services are 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. 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 when the change in estimate occurs. Business and Credit Concentrations— The Company’s operations are conducted primarily across 21 U.S. states and in British Columbia, Canada, with the most significant revenue generated in Texas, Kansas, 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 a significant concentration of credit exists with respect to any individual customer or group of customers. No single customer accounted for more than 10% of the Company’s total revenue in the three months ended April 1, 2017 and April 2, 2016. Earnings per Share— The Company computes basic earnings per share attributable to stockholders by dividing income attributable to Summit Inc. by the weighted-average shares of Class A common stock outstanding. Diluted earnings per share reflects the potential dilution beyond shares for basic earnings per share that could occur if securities or other contracts to issue common stock were exercised, converted into common stock, or resulted in the issuance of common stock that would have shared in the Company’s earnings. Since the Class B common stock has no economic value, those shares are not included in the weighted-average common share amount for basic or diluted earnings per share. In addition, as the shares of Class A common stock are issued by Summit Inc., the earnings and equity interests of noncontrolling interests are not included in basic earnings per share. 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 only be made if earn-out thresholds are achieved. Contingent consideration obligations are measured at fair value each reporting period. Any adjustments to fair value are recognized in earnings in the period identified. The Company has entered into interest rate derivatives on $200.0 million of its term loan borrowings to add stability to interest expense and to manage its exposure to interest rate movements. The effective portion of changes in the fair value of derivatives designated and that qualify as cash flow hedges is recorded in accumulated other comprehensive loss and will be subsequently reclassified into earnings in the period that the hedged forecasted transaction affects earnings. The fair value of contingent consideration and derivatives as of April 1, 2017 and December 31, 2016 was: April 1, December 31, 2017 2016 Current portion of acquisition-related liabilities and Accrued expenses: Contingent consideration $ 3,188 $ 9,288 Cash flow hedges 816 942 Acquisition-related liabilities and Other noncurrent liabilities Contingent consideration $ 10,598 $ 2,377 Cash flow hedges 1,123 1,438 The fair value of contingent consideration was 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. The fair value of the cash flow hedges are based on observable, or Level 2, inputs such as interest rates, bond yields and prices in inactive markets. There were no material valuation adjustments to contingent consideration or derivatives in the three months ended April 1, 2017 and April 2, 2016. Financial Instruments —The Company’s financial instruments include debt and certain acquisition-related liabilities (deferred consideration and noncompete obligations). The carrying value and fair value of these financial instruments as of April 1, 2017 and December 31, 2016 was: April 1, 2017 December 31, 2016 Fair Value Carrying Value Fair Value Carrying Value Level 2 Long-term debt(1) $ 1,582,213 $ 1,534,654 $ 1,586,102 $ 1,536,065 Level 3 Current portion of deferred consideration and noncompete obligations(2) 14,664 14,664 14,874 14,874 Long term portion of deferred consideration and noncompete obligations(3) 23,117 23,117 30,287 30,287 (1) $6.5 million included in current portion of debt as of April 1, 2017 and December 31, 2016. (2) Included in current portion of acquisition-related liabilities on the consolidated balance sheets. (3) Included in acquisition-related liabilities on the consolidated balance sheets. The fair value of debt was determined based on observable, or Level 2, inputs, such as interest rates, bond yields and quoted prices in inactive markets. The fair values of the deferred consideration and noncompete obligations were 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 discount rate used is generally consistent with that used when the obligations were initially recorded. Securities with a maturity of three months or less are considered cash equivalents and the fair value of these assets approximates their carrying value. New Accounting Standards — In March 2017, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2017-07, Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost , which requires that the service cost component be reported in the same line item as employer compensation costs and that the other components of periodic pension costs be reported outside of operating income. The ASU also restricts capitalization of costs to the service cost component. The ASU is effective for public companies for annual periods beginning after December 15, 2017. The Company early adopted this ASU as of the beginning of fiscal year 2017, on a retrospective basis; accordingly, the Company reclassified $98,000 from product cost of revenue to other income in the three months ended April 2, 2016 to conform to the current year presentation. In January 2017, the FASB issued ASU 2017-04, Simplifying the Test for Goodwill Impairment , which eliminates the two step goodwill impairment test and replaces it with a single step test. The single step test compares the carrying amount of a reporting unit to its fair value; if the carrying amount is greater than the fair value the difference is the amount of the goodwill impairment. Step zero is left unchanged. Therefore, entities that wish to do a qualitative assessment are still permitted to do so. The ASU is effective for SEC filers for fiscal years beginning after December 15, 2020. However, the Company early adopted this ASU as of the beginning of fiscal year 2017. The adoption of this ASU did not have a material impact on the consolidated financial statements. In March 2016, the FASB issued ASU 2016-09, Improvements to Employee Share-Based Payment Accounting, which requires that the income tax effect of share-based awards be recognized in the income statement and allows entities to elect an accounting method to recognize forfeitures as they occur or to estimate forfeitures. The Company early adopted this ASU as of the beginning of fiscal year 2016 and made an election to recognize forfeitures as they occur. The ASU adoption was applied using a modified retrospective method by means of a $1.7 million cumulative-effect adjustment to accumulated earnings (deficit) as of the beginning of the fiscal year.
Summit Materials, LLC
Company Information
Summary of Organization and Significant Accounting Policies	1. Summit Materials, LLC (“Summit LLC” and, together with its subsidiaries, the “Company”) is a vertically integrated, construction materials company. The Company is engaged in the production and sale of aggregates, cement, ready-mix concrete, asphalt paving mix and concrete products and owns and operates quarries, sand and gravel pits, two cement plants, cement distribution terminals, ready-mix concrete plants, asphalt plants and landfill sites. It is also engaged in paving and related services. The Company’s three operating and reporting segments are the West, East and Cement segments. 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 services. Therefore, the financial results for any interim period are typically not 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. Summit LLC is a wholly owned indirect subsidiary of Summit Materials Holdings L.P. (“Summit Holdings”), whose primary owner is Summit Materials, Inc. (“Summit Inc.”). Summit Inc. was formed as a Delaware corporation on September 23, 2014. Its sole material asset is a controlling equity interest in Summit Holdings. Pursuant to a reorganization into a holding company structure (the “Reorganization”) in connection with Summit Inc.’s March 2015 initial public offering, Summit Inc. became a holding corporation operating and controlling all of the business and affairs of Summit Holdings and its subsidiaries, including Summit LLC. Summit Inc. Equity Offering — On January 10, 2017, Summit Inc. raised $237.6 million, net of underwriting discounts, through the issuance of 10,000,000 shares of Class A common stock at a public offering price of $24.05 per share. Summit Inc. used these proceeds to purchase an equal number of limited partnership interests in Summit Holdings (“LP Units”) and caused Summit Holdings to use a portion of the proceeds from the offering to acquire two materials-based companies for a combined purchase price of approximately $110 million in cash, with remaining net proceeds to be used for general corporate purposes, which may include, but is not limited to, funding acquisitions, repaying indebtedness, capital expenditures and funding working capital. Basis of Presentation —These unaudited consolidated financial statements were prepared in accordance with U.S. generally accepted accounting principles (“U.S. 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 U.S. 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 31, 2016. 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 April 1, 2017, and the results of operations and cash flows for the three months ended April 1, 2017 and April 2, 2016 Principles of Consolidation –The consolidated financial statements include the accounts of Summit LLC and its majority owned subsidiaries. All intercompany balances and transactions have been eliminated. The Company attributes consolidated member’s interest and net income separately to the controlling and noncontrolling interests. Noncontrolling interests in consolidated subsidiaries represent a 20% ownership in Ohio Valley Asphalt, LLC. The Company accounts for investments in entities for which it has an ownership of 20% to 50% using the equity method of accounting. Use of Estimates —Preparation of these consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions. These estimates and the underlying assumptions affect the amounts of assets and liabilities reported, disclosures about contingent assets and liabilities and reported amounts of revenue and expenses. Such estimates include the valuation of accounts receivable, inventories, valuation of deferred tax assets, 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 paving and related services are 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. 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 when the change in estimate occurs. Business and Credit Concentrations— The Company’s operations are conducted primarily across 21 U.S. states and in British Columbia, Canada, with the most significant revenue generated in Texas, Kansas, 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 a significant concentration of credit exists with respect to any individual customer or group of customers. No single customer accounted for more than 10% of the Company’s total revenue in the three months ended April 1, 2017 and April 2, 2016. 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 only be made if earn-out thresholds are achieved. Contingent consideration obligations are measured at fair value each reporting period. Any adjustments to fair value are recognized in earnings in the period identified. The Company has entered into interest rate derivatives on $200.0 million of its term loan borrowings to add stability to interest expense and to manage its exposure to interest rate movements. The effective portion of changes in the fair value of derivatives designated and that qualify as cash flow hedges is recorded in accumulated other comprehensive loss and will be subsequently reclassified into earnings in the period that the hedged forecasted transaction affects earnings. The fair value of contingent consideration and derivatives as of April 1, 2017 and December 31, 2016 was: April 1, December 31, 2017 2016 Current portion of acquisition-related liabilities and Accrued expenses: Contingent consideration $ 3,188 $ 9,288 Cash flow hedges 816 942 Acquisition-related liabilities and Other noncurrent liabilities Contingent consideration $ 10,598 $ 2,377 Cash flow hedges 1,123 1,438 The fair value of contingent consideration was 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. The fair value of the cash flow hedges are based on observable, or Level 2, inputs such as interest rates, bond yields and prices in inactive markets. There were no material valuation adjustments to contingent consideration or derivatives in the three months ended April 1, 2017 and April 2, 2016. Financial Instruments —The Company’s financial instruments include debt and certain acquisition-related liabilities (deferred consideration and noncompete obligations). The carrying value and fair value of these financial instruments as of April 1, 2017 and December 31, 2016 was: April 1, 2017 December 31, 2016 Fair Value Carrying Value Fair Value Carrying Value Level 2 Long-term debt(1) $ 1,582,213 $ 1,534,654 $ 1,586,102 $ 1,536,065 Level 3 Current portion of deferred consideration and noncompete obligations(2) 12,164 12,164 12,375 12,375 Long term portion of deferred consideration and noncompete obligations(3) 17,861 17,861 22,784 22,784 (1) $6.5 million included in current portion of debt as of April 1, 2017 and December 31, 2016. (2) Included in current portion of acquisition-related liabilities on the consolidated balance sheets. (3) Included in acquisition-related liabilities on the consolidated balance sheets. The fair value of debt was determined based on observable, or Level 2 inputs, such as interest rates, bond yields and quoted prices in inactive markets. The fair values of the deferred consideration and noncompete obligations were 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 discount rate used is generally consistent with that used when the obligations were initially recorded. Securities with a maturity of three months or less are considered cash equivalents and the fair value of these assets approximates their carrying value. New Accounting Standards — In March 2017, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2017-07, Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost , which requires that the service cost component be reported in the same line item as employer compensation costs and that the other components of periodic pension costs be reported outside of operating income. The ASU also restricts capitalization of costs to the service cost component. The ASU is effective for public companies for annual periods beginning after December 15, 2017. The Company early adopted this ASU as of the beginning of fiscal year 2017, on a retrospective basis; accordingly, the Company reclassified $98,000 from product cost of revenue to other (income) expense in the three months ended April 2, 2016 to conform to the current year presentation. In January 2017, the FASB issued ASU 2017-04, Simplifying the Test for Goodwill Impairment , which eliminates the two step goodwill impairment test and replaces it with a single step test. The single step test compares the carrying amount of a reporting unit to its fair value; if the carrying amount is greater than the fair value the difference is the amount of the goodwill impairment. Step zero is left unchanged. Therefore, entities that wish to do a qualitative assessment are still permitted to do so. The ASU is effective for SEC filers for fiscal years beginning after December 15, 2020. However, the Company early adopted this ASU as of the beginning of fiscal year 2017. The adoption of this ASU did not have a material impact on the consolidated financial statements. In March 2016, the FASB issued ASU 2016-09, Improvements to Employee Share-Based Payment Accounting , which requires that the income tax effect of share-based awards be recognized in the income statement and allows entities to elect an accounting method to recognize forfeitures as they occur or to estimate forfeitures. The Company early adopted this ASU as of the beginning of fiscal year 2016 and made an election to recognize forfeitures as they occur. The ASU adoption was applied using a modified retrospective method by means of a $1.7 million cumulative-effect adjustment to accumulated earnings (deficit) as of the beginning of the fiscal year.

Acquisitions

Acquisitions	3 Months Ended
	Apr. 01, 2017
Acquisitions	2. The Company has completed numerous acquisitions since its formation, which have been financed through a combination of debt and equity funding. The operations of each acquisition have been included in the Company’s consolidated results of operations since the respective closing dates of the acquisitions. The Company measures all assets acquired and liabilities assumed at their acquisition-date fair value. The following acquisitions completed in the three months ended April 1, 2017 and in fiscal 2016 were not material individually, or when combined: West segment: · On January 30, 2017, the Company acquired Everist Materials, LLC (“Everist Materials”), a vertically integrated aggregates, ready-mix concrete, and paving business based in Silverthorne, Colorado, with two aggregates plants, five ready-mix plants and two asphalt plants . · On October 3, 2016, the Company acquired Midland Concrete Ltd. (“Midland Concrete”), a ready-mix company with one plant servicing the Midland, Texas market. · On August 19, 2016, the Company acquired H.C. Rustin Corporation (“Rustin”), a ready-mix company with 12 ready-mix plants servicing the Southern Oklahoma market. · On April 29, 2016, the Company acquired Sierra Ready Mix, LLC (“Sierra”), a vertically integrated aggregates and ready-mix concrete business with one sand and gravel pit and two ready-mix concrete plants located in Las Vegas, Nevada. East segment: · On March 17, 2017, the Company acquired Sandidge Concrete (“Sandidge”), a ready-mix concrete company with three plants servicing the Columbia, Missouri market. · On February 24, 2017, the Company acquired Razorback Concrete Company (“Razorback”), an aggregates-based business with ready-mix concrete operations in central and northeastern Arkansas. · On August 26, 2016, the Company acquired R.D. Johnson Excavating Company, LLC and Asphalt Sales of Lawrence, LLC (“RD Johnson”), an asphalt producer and construction services company based in Lawrence, Kansas. · On August 8, 2016, the Company acquired the assets of Weldon Real Estate, LLC (“Weldon”) and the membership interests of Honey Creek Disposal Service, LLC. (‘‘Honey Creek’’). Honey Creek is a trash collection business, which was sold immediately after acquisition. The Company retained the building assets of Weldon, where its recycling business in Kansas is operated. · On May 20, 2016, the Company acquired seven aggregates quarries in central and northwest Missouri from APAC-Kansas, Inc. and APAC-Missouri, Inc., subsidiaries of Oldcastle Materials, Inc. (“Oldcastle Assets”). · On March 18, 2016, the Company acquired Boxley Materials Company (“Boxley”), a vertically integrated company based in Roanoke, Virginia with six quarries, four ready-mix concrete plants and four asphalt plants. · On February 5, 2016, the Company acquired American Materials Company (“AMC”), an aggregates company with five sand and gravel pits servicing coastal North and South Carolina. Cement segment · On August 30, 2016, the Company acquired two river-supplied cement and fly-ash distribution terminals in Southern Louisiana. The purchase price allocation, primarily the valuation of property, plant and equipment for the 2017 acquisitions, as well as certain of the 2016 acquisitions has not yet been finalized due to the timing of the acquisitions. The following table summarizes aggregated information regarding the fair values of the assets acquired and liabilities assumed as of the respective acquisition dates: Three months ended Year Ended April 1, December 31, 2017 2016 Financial assets (1) $ 6,856 $ 22,204 Inventories 4,603 17,215 Property, plant and equipment 51,253 180,321 Intangible assets 13 5,531 Other assets 1,174 6,757 Financial liabilities (1) (5,147) (20,248) Other long-term liabilities (1,592) (36,074) Net assets acquired 57,160 175,706 Goodwill 64,993 176,319 Purchase price 122,153 352,025 Acquisition related liabilities (9,820) (17,034) Other — 1,967 Net cash paid for acquisitions $ 112,333 $ 336,958 (1) In the first quarter of 2017, we reclassified $1.2 million of accounts payable overdrafts from financial assets to financial liabilities for the year ended December 31, 2016. Changes in the carrying amount of goodwill, by reportable segment, from December 31, 2016 to April 1, 2017 are summarized as follows: West East Cement Total Balance, December 31, 2016 $ 334,257 $ 243,417 $ 204,538 $ 782,212 Acquisitions(1) 57,042 8,235 118 65,395 Foreign currency translation adjustments 427 — — 427 Balance, April 1, 2017 $ 391,726 $ 251,652 $ 204,656 $ 848,034 Accumulated impairment losses as of April 1, 2017 and December 31, 2016 $ (53,264) $ (14,938) $ — $ (68,202) (1) Reflects goodwill from 2017 acquisitions and working capital adjustments from prior year acquisitions. The Company’s intangible assets are primarily composed of goodwill, lease agreements and reserve rights. The assets related to lease agreements reflect the submarket royalty rates paid under agreements, primarily for extracting aggregates. The values were determined as of the respective acquisition dates by a comparison of market-royalty rates. The reserve rights relate to aggregate reserves to which the Company has the rights of ownership, but does not own the reserves. The intangible assets are amortized on a straight-line basis over the lives of the leases. The following table shows intangible assets by type and in total: April 1, 2017 December 31, 2016 Gross Net Gross Net Carrying Accumulated Carrying Carrying Accumulated Carrying Amount Amortization Amount Amount Amortization Amount Leases $ 15,902 $ (3,547) $ 12,355 $ 15,888 $ (3,382) $ 12,506 Reserve rights 6,234 (1,358) 4,876 8,706 (3,710) 4,996 Trade names 1,000 (683) 317 1,000 (658) 342 Other 249 (112) 137 249 (104) 145 Total intangible assets $ 23,385 $ (5,700) $ 17,685 $ 25,843 $ (7,854) $ 17,989 Amortization expense totaled $0.3 million and $0.4 million for the three months ended April 1, 2017 and April 2, 2016, respectively. The estimated amortization expense for the intangible assets for each of the five years subsequent to April 1, 2017 is as follows: 2017 (nine months) $ 949 2018 1,279 2019 1,260 2020 1,177 2021 1,135 2022 1,135 Thereafter 10,750 Total $ 17,685
Summit Materials, LLC
Acquisitions	2. The Company has completed numerous acquisitions since its formation, which have been financed through a combination of debt and equity funding. The operations of each acquisition have been included in the Company’s consolidated results of operations since the respective closing dates of the acquisitions. The Company measures all assets acquired and liabilities assumed at their acquisition-date fair value. The following acquisitions completed in the three months ended April 1, 2017 and in fiscal 2016 were not material individually, or when combined: West segment · On January 30, 2017, the Company acquired Everist Materials, LLC (“Everist Materials”), a vertically integrated aggregates, ready-mix concrete, and paving business based in Silverthorne, Colorado, with two aggregates plants, five ready-mix plants and two asphalt plants . · On October 3, 2016, the Company acquired Midland Concrete Ltd. (“Midland Concrete”), a ready-mix company with one plant servicing the Midland, Texas market. · On August 19, 2016, the Company acquired H.C. Rustin Corporation (“Rustin”), a ready-mix company with 12 ready-mix plants servicing the Southern Oklahoma market. · On April 29, 2016, the Company acquired Sierra Ready Mix, LLC (“Sierra”), a vertically integrated aggregates and ready-mix concrete business with one sand and gravel pit and two ready-mix concrete plants located in Las Vegas, Nevada. East segment · On March 17, 2017, the Company acquired Sandidge Concrete (“Sandidge”), a ready-mix concrete company with three plants servicing the Columbia, Missouri market. · On February 24, 2017, the Company acquired Razorback Concrete Company (“Razorback”), an aggregates-based business with ready-mix concrete operations in central and northeastern Arkansas. · On August 26, 2016, the Company acquired R.D. Johnson Excavating Company, LLC and Asphalt Sales of Lawrence, LLC (“RD Johnson”), an asphalt producer and construction services company based in Lawrence, Kansas. · On August 8, 2016, the Company acquired the assets of Weldon Real Estate, LLC (“Weldon”) and the membership interests of Honey Creek Disposal Service, LLC. (‘‘Honey Creek’’). Honey Creek is a trash collection business, which was sold immediately after acquisition. The Company retained the building assets of Weldon, where its recycling business in Kansas is operated. · On May 20, 2016, the Company acquired seven aggregates quarries in central and northwest Missouri from APAC-Kansas, Inc. and APAC-Missouri, Inc., subsidiaries of Oldcastle Materials, Inc. (“Oldcastle Assets”). · On March 18, 2016, the Company acquired Boxley Materials Company (“Boxley”), a vertically integrated company based in Roanoke, Virginia with six quarries, four ready-mix concrete plants and four asphalt plants. · On February 5, 2016, the Company acquired American Materials Company (“AMC”), an aggregates company with five sand and gravel pits servicing coastal North and South Carolina. Cement segment · On August 30, 2016, the Company acquired two river-supplied cement and fly-ash distribution terminals in Southern Louisiana. The purchase price allocation, primarily the valuation of property, plant and equipment for the 2017 acquisitions, as well as certain of the 2016 acquisitions has not yet been finalized due to the timing of the acquisitions. The following table summarizes aggregated information regarding the fair values of the assets acquired and liabilities assumed as of the respective acquisition dates: Three months ended Year Ended April 1, December 31, 2017 2016 Financial assets (1) $ 6,856 $ 22,204 Inventories 4,603 17,215 Property, plant and equipment 51,253 180,321 Intangible assets 13 5,531 Other assets 1,174 6,757 Financial liabilities (1) (5,147) (20,248) Other long-term liabilities (1,592) (36,074) Net assets acquired 57,160 175,706 Goodwill 64,993 176,319 Purchase price 122,153 352,025 Acquisition related liabilities (9,820) (17,034) Other — 1,967 Net cash paid for acquisitions $ 112,333 $ 336,958 (1) In the first quarter of 2017, we reclassified $1.2 million of accounts payable overdrafts from financial assets to financial liabilities for the year ended December 31, 2016. Changes in the carrying amount of goodwill, by reportable segment, from December 31, 2016 to April 1, 2017 are summarized as follows: West East Cement Total Balance, December 31, 2016 $ 334,257 $ 243,417 $ 204,538 $ 782,212 Acquisitions(1) 57,042 8,235 118 65,395 Foreign currency translation adjustments 427 — — 427 Balance, April 1, 2017 $ 391,726 $ 251,652 $ 204,656 $ 848,034 Accumulated impairment losses as of April 1, 2017 and December 31, 2016 $ (53,264) $ (14,938) $ — $ (68,202) (1) Reflects goodwill from 2017 acquisitions and working capital adjustments from prior year acquisitions. The Company’s intangible assets are primarily composed of goodwill, lease agreements and reserve rights. The assets related to lease agreements reflect the submarket royalty rates paid under agreements, primarily, for extracting aggregates. The values were determined as of the respective acquisition dates by a comparison of market-royalty rates. The reserve rights relate to aggregate reserves to which the Company has the rights of ownership, but does not own the reserves. The intangible assets are amortized on a straight-line basis over the lives of the leases. The following table shows intangible assets by type and in total: April 1, 2017 December 31, 2016 Gross Net Gross Net Carrying Accumulated Carrying Carrying Accumulated Carrying Amount Amortization Amount Amount Amortization Amount Leases $ 15,902 $ (3,547) $ 12,355 $ 15,888 $ (3,382) $ 12,506 Reserve rights 6,234 (1,358) 4,876 8,706 (3,710) 4,996 Trade names 1,000 (683) 317 1,000 (658) 342 Other 249 (112) 137 249 (104) 145 Total intangible assets $ 23,385 $ (5,700) $ 17,685 $ 25,843 $ (7,854) $ 17,989 Amortization expense totaled $0.3 million and $0.4 million for the three months ended April 1, 2017 and April 2, 2016, respectively. The estimated amortization expense for the intangible assets for each of the five years subsequent to April 1, 2017 is as follows: 2017 (nine months) $ 949 2018 1,279 2019 1,260 2020 1,177 2021 1,135 2022 1,135 Thereafter 10,750 Total $ 17,685

Accounts Receivable, Net

Accounts Receivable, Net	3 Months Ended
	Apr. 01, 2017
Accounts Receivable, Net	3. Accounts receivable, net consisted of the following as of April 1, 2017 and December 31, 2016: April 1, December 31, 2017 2016 Trade accounts receivable $ 147,501 $ 152,845 Retention receivables 10,136 12,117 Receivables from related parties 355 721 Accounts receivable 157,992 165,683 Less: Allowance for doubtful accounts (3,148) (3,306) Accounts receivable, net $ 154,844 $ 162,377 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 generally billed and collected within one year.
Summit Materials, LLC
Accounts Receivable, Net	3. Accounts receivable, net consisted of the following as of April 1, 2017 and December 31, 2016: April 1, December 31, 2017 2016 Trade accounts receivable $ 147,501 $ 152,845 Retention receivables 10,136 12,117 Receivables from related parties 355 721 Accounts receivable 157,992 165,683 Less: Allowance for doubtful accounts (3,148) (3,306) Accounts receivable, net $ 154,844 $ 162,377 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 generally billed and collected within one year. 4

Inventories

Inventories	3 Months Ended
	Apr. 01, 2017
Inventories	4. Inventories consisted of the following as of April 1, 2017 and December 31, 2016: April 1, December 31, 2017 2016 Aggregate stockpiles $ 114,226 $ 103,073 Finished goods 47,968 35,071 Work in process 5,409 6,440 Raw materials 19,395 13,095 Total $ 186,998 $ 157,679
Summit Materials, LLC
Inventories	4. Inventories consisted of the following as of April 1, 2017 and December 31, 2016: April 1, December 31, 2017 2016 Aggregate stockpiles $ 114,226 $ 103,073 Finished goods 47,968 35,071 Work in process 5,409 6,440 Raw materials 19,395 13,095 Total $ 186,998 $ 157,679

Accrued Expenses

Accrued Expenses	3 Months Ended
	Apr. 01, 2017
Accrued Expenses	5. Accrued expenses consisted of the following as of April 1, 2017 and December 31, 2016: April 1, December 31, 2017 2016 Interest $ 18,341 $ 22,991 Payroll and benefits 18,217 30,546 Capital lease obligations 17,396 11,766 Insurance 11,047 11,966 Non-income taxes 7,714 5,491 Professional fees 2,244 2,459 Other(1) 25,761 26,386 Total $ 100,720 $ 111,605 (1) Consists primarily of subcontractor and working capital settlement accruals.
Summit Materials, LLC
Accrued Expenses	5. Accrued expenses consisted of the following as of April 1, 2017 and December 31, 2016: April 1, December 31, 2017 2016 Interest $ 18,341 $ 22,991 Payroll and benefits 18,217 30,546 Capital lease obligations 17,396 11,766 Insurance 11,047 11,966 Non-income taxes 7,714 5,491 Professional fees 2,244 2,459 Other(1) 25,761 25,254 Total $ 100,720 $ 110,473 (1)

Debt

Debt	3 Months Ended
	Apr. 01, 2017
Debt	6. Debt consisted of the following as of April 1, 2017 and December 31, 2016: April 1, December 31, 2017 2016 Term Loan, due 2022: $638.6 million and $640.3 million, net of $2.4 million and $2.6 million discount at April 1, 2017 and December 31, 2016, respectively $ 636,186 $ 637,658 8 1 ⁄ 2 % Senior Notes, due 2022 250,000 250,000 6 1 ⁄ 8 % Senior Notes, due 2023: $650.0 million, net of $1.5 million and $1.6 million discount at April 1, 2017 and December 31, 2016, respectively 648,468 648,407 Total 1,534,654 1,536,065 Current portion of long-term debt 6,500 6,500 Long-term debt $ 1,528,154 $ 1,529,565 The contractual payments of long-term debt, including current maturities, for the five years subsequent to April 1, 2017, are as follows: 2017 (nine months) $ 4,875 2018 4,875 2019 6,500 2020 8,125 2021 6,500 2022 857,750 Thereafter 650,000 Total 1,538,625 Less: Original issue net discount (3,971) Less: Capitalized loan costs (15,097) Total debt $ 1,519,557 Senior Notes — On March 8, 2016, Summit LLC and Summit Materials Finance Corp., an indirect wholly-owned subsidiary of Summit LLC ("Finance Corp." and with Summit LLC, the “Issuers”) issued $250.0 million of 8.500% senior notes due April 15, 2022 (the “2022 Notes”). The 2022 Notes were issued at 100.0% of their par value with proceeds of $246.3 million, net of related fees and expenses. The proceeds from the sale of the 2022 Notes were used to fund the acquisition of Boxley, replenish cash used for the acquisition of AMC and pay expenses incurred in connection with these acquisitions. The 2022 Notes were issued under an indenture dated March 8, 2016 (as amended and supplemented, the “2016 Indenture”). The 2016 Indenture contains covenants limiting, among other things, Summit LLC and its restricted subsidiaries’ ability 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 its assets, enter into certain transactions with affiliates, and designate subsidiaries as unrestricted subsidiaries. The 2016 Indenture also contains customary events of default. Interest on the 2022 Notes is payable semi-annually in arrears on April 15 and October 15 of each year. In 2015, the Issuers issued $650.0 million of 6.125% senior notes due July 2023 (the "2023 Notes” and collectively with the 2022 Notes, the “Senior Notes”). Of the aggregate $650.0 million of 2023 Notes, $350.0 million were issued at par and $300.0 million were issued at 99.375% of par. The 2023 Notes were issued under an indenture dated July 8, 2015, the terms of which are generally consistent with the 2016 Indenture. Interest on the 2023 Notes is payable semi-annually in arrears on January 15 and July 15 of each year. As of April 1, 2017 and December 31, 2016, the Company was in compliance with all financial covenants under the applicable indentures. Senior Secured Credit Facilities — Summit LLC has credit facilities that provide for term loans in an aggregate amount of $650.0 million and revolving credit commitments in an aggregate amount of $235.0 million (the “Senior Secured Credit Facilities”). Under the Senior Secured Credit Facilities, required principal repayments of 0.25% of the original aggregate amount of term debt are due on the last business day of each March, June, September and December. The unpaid principal balance is due in full on the maturity date, which is July 17, 2022. On January 19, 2017, Summit LLC entered into Amendment No. 1 (“Amendment No. 1”) to the credit agreement governing the Senior Secured Credit Facilities (the “Credit Agreement”), which, among other things, reduced the applicable margin in respect of the $640.3 million outstanding principal amount of term loans thereunder and included a 1.00% prepayment premium in connection with certain further repricing events that occur on or prior to the six-month anniversary of the effective date of Amendment No. 1. All other material terms and provisions remain substantially identical to the terms and provisions in place immediately prior to the effectiveness of Amendment No. 1. The revolving credit facility bears interest per annum equal to, at Summit LLC’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) LIBOR plus 1.00%, plus an applicable margin of 2.25% for base rate loans or (ii) a LIBOR rate determined by reference to Reuters prior to the interest period relevant to such borrowing adjusted for certain additional costs plus an applicable margin of 3.25% for LIBOR rate loans. There were no outstanding borrowings under the revolving credit facility as of April 1, 2017 and December 31, 2016, leaving remaining borrowing capacity of $215.4 million as of April 1, 2017, which is net of $19.6 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. Summit LLC’s Consolidated First Lien Net Leverage Ratio, as such term is defined in the Credit Agreement, should be no greater than 4.75:1.0 as of each quarter-end. As of April 1, 2017 and December 31, 2016, Summit LLC was in compliance with all financial covenants. Summit LLC’s wholly-owned domestic subsidiary companies, subject to certain exclusions and exceptions, are named as subsidiary guarantors of the Senior Notes and the Senior Secured Credit Facilities. In addition, Summit LLC has pledged substantially all of its assets as collateral, subject to certain exclusions and exceptions, for the Senior Secured Credit Facilities. Interest expense related to debt totaled $21.6 million and $18.3 million in the three months ended April 1, 2017 and April 2, 2016, respectively. The following table presents the activity for the deferred financing fees for the three months ended April 1, 2017 and April 2, 2016: Deferred financing fees Balance—December 31, 2016 $ 18,290 Loan origination fees 699 Amortization (917) Write off of deferred financing fees (45) Balance—April 1, 2017 $ 18,027 Balance—January 2, 2016 $ 15,892 Loan origination fees 5,001 Amortization (729) Balance—April 2, 2016 $ 20,164 Other —On January 15, 2015, the Company’s wholly-owned subsidiary in British Columbia, Canada entered into an agreement with HSBC for a (i) $6.0 million Canadian dollar (“CAD”) revolving credit commitment to be used for operating activities that bears interest per annum equal to the bank’s prime rate plus 0.20%, (ii) $0.5 million CAD revolving credit commitment to be used for capital equipment that bears interest per annum at the bank’s prime rate plus 0.90% and (iii) $0.4 million CAD revolving credit commitment to provide guarantees on behalf of that subsidiary. There were no amounts outstanding under this agreement as of April 1, 2017 or December 31, 2016.
Summit Materials, LLC
Debt	6. Debt consisted of the following as of April 1, 2017 and December 31, 2016: April 1, December 31, 2017 2016 Term Loan, due 2022: $638.6 million and $640.3 million, net of $2.4 million and $2.6 million discount at April 1, 2017 and December 31, 2016, respectively $ 636,186 $ 637,658 8 1 ⁄ 2 % Senior Notes, due 2022 250,000 250,000 6 1 ⁄ 8 % Senior Notes, due 2023: $650.0 million, net of $1.5 million and $1.6 million discount at April 1, 2017 and December 31, 2016, respectively 648,468 648,407 Total 1,534,654 1,536,065 Current portion of long-term debt 6,500 6,500 Long-term debt $ 1,528,154 $ 1,529,565 The contractual payments of long-term debt, including current maturities, for the five years subsequent to April 1, 2017, are as follows: 2017 (nine months) $ 4,875 2018 4,875 2019 6,500 2020 8,125 2021 6,500 2022 857,750 Thereafter 650,000 Total 1,538,625 Less: Original issue net discount (3,971) Less: Capitalized loan costs (15,097) Total debt $ 1,519,557 Senior Notes — On March 8, 2016, Summit LLC and Summit Materials Finance Corp., an indirect wholly-owned subsidiary of Summit LLC ("Finance Corp." and with Summit LLC, the “Issuers”) issued $250.0 million of 8.500% senior notes due April 15, 2022 (the “2022 Notes”). The 2022 Notes were issued at 100.0% of their par value with proceeds of $246.3 million, net of related fees and expenses. The proceeds from the sale of the 2022 Notes were used to fund the acquisition of Boxley, replenish cash used for the acquisition of AMC and pay expenses incurred in connection with these acquisitions. The 2022 Notes were issued under an indenture dated March 8, 2016 (as amended and supplemented, the “2016 Indenture”). The 2016 Indenture contains covenants limiting, among other things, Summit LLC and its restricted subsidiaries’ ability 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 its assets, enter into certain transactions with affiliates, and designate subsidiaries as unrestricted subsidiaries. The 2016 Indenture also contains customary events of default. Interest on the 2022 Notes is payable semi-annually in arrears on April 15 and October 15 of each year. In 2015, the Issuers issued $650.0 million of 6.125% senior notes due July 2023 (the “2023 Notes” and collectively with the 2022 Notes, the “Senior Notes”). Of the aggregate $650.0 million of 2023 Notes, $350.0 million were issued at par and $300.0 million were issued at 99.375% of par. The 2023 Notes were issued under an indenture dated July 8, 2015, the terms of which are generally consistent with the 2016 Indenture. Interest on the 2023 Notes is payable semi-annually in arrears on January 15 and July 15 of each year. As of April 1, 2017 and December 31, 2016, the Company was in compliance with all financial covenants under the applicable indentures. Senior Secured Credit Facilities — Summit LLC has credit facilities that provide for term loans in an aggregate amount of $650.0 million and revolving credit commitments in an aggregate amount of $235.0 million (the “Senior Secured Credit Facilities”). Under the Senior Secured Credit Facilities, required principal repayments of 0.25% of the original aggregate amount of term debt are due on the last business day of each March, June, September and December. The unpaid principal balance is due in full on the maturity date, which is July 17, 2022. On January 19, 2017, Summit LLC entered into Amendment No. 1 (“Amendment No. 1”) to the credit agreement governing the Senior Secured Credit Facilities (the “Credit Agreement”), which, among other things, reduced the applicable margin in respect of the $640.3 million outstanding principal amount of term loans thereunder and included a 1.00% prepayment premium in connection with certain further repricing events that occur on or prior to the six-month anniversary of the effective date of Amendment No. 1. All other material terms and provisions remain substantially identical to the terms and provisions in place immediately prior to the effectiveness of Amendment No. 1. The revolving credit facility bears interest per annum equal to, at Summit LLC’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) LIBOR plus 1.00%, plus an applicable margin of 2.25% for base rate loans or (ii) a LIBOR rate determined by reference to Reuters prior to the interest period relevant to such borrowing adjusted for certain additional costs plus an applicable margin of 3.25% for LIBOR rate loans. There were no outstanding borrowings under the revolving credit facility as of April 1, 2017 and December 31, 2016, leaving remaining borrowing capacity of $215.4 million as of April 1, 2017, which is net of $19.6 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. Summit LLC’s Consolidated First Lien Net Leverage Ratio, as such term is defined in the Credit Agreement, should be no greater than 4.75:1.0 as of each quarter-end. As of April 1, 2017 and December 31, 2016, Summit LLC was in compliance with all financial covenants. Summit LLC’s wholly-owned domestic subsidiary companies, subject to certain exclusions and exceptions, are named as subsidiary guarantors of the Senior Notes and the Senior Secured Credit Facilities. In addition, Summit LLC has pledged substantially all of its assets as collateral, subject to certain exclusions and exceptions, for the Senior Secured Credit Facilities. Interest expense related to debt totaled $21.6 million and $18.3 million in the three months ended April 1, 2017 and April 2, 2016, respectively. The following table presents the activity for the deferred financing fees for the three months ended April 1, 2017 and April 2, 2016: Deferred financing fees Balance—December 31, 2016 $ 18,290 Loan origination fees 699 Amortization (917) Write off of deferred financing fees (45) Balance—April 1, 2017 $ 18,027 Balance—January 2, 2016 $ 15,892 Loan origination fees 5,001 Amortization (729) Balance—April 2, 2016 $ 20,164 Other —On January 15, 2015, the Company’s wholly-owned subsidiary in British Columbia, Canada entered into an agreement with HSBC for a (i) $6.0 million Canadian dollar (“CAD”) revolving credit commitment to be used for operating activities that bears interest per annum equal to the bank’s prime rate plus 0.20%, (ii) $0.5 million CAD revolving credit commitment to be used for capital equipment that bears interest per annum at the bank’s prime rate plus 0.90% and (iii) $0.4 million CAD revolving credit commitment to provide guarantees on behalf of that subsidiary. There were no amounts outstanding under this agreement as of April 1, 2017 or December 31, 2016.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	3 Months Ended
	Apr. 01, 2017
Accumulated Other Comprehensive Loss	7. The changes in each component of accumulated other comprehensive loss consisted of the following: Accumulated Foreign currency other Change in translation Cash flow hedge comprehensive retirement plans adjustments adjustments loss Balance — December 31, 2016 $ 1,450 $ (3,106) $ (593) $ (2,249) Foreign currency translation adjustment — 670 — 670 Income on cash flow hedges — — 393 393 Balance — April 1, 2017 $ 1,450 $ (2,436) $ (200) $ (1,186) Balance — January 2, 2016 $ 1,049 $ (3,379) $ (465) $ (2,795) Foreign currency translation adjustment — 2,309 — 2,309 Loss on cash flow hedges — — (1,111) (1,111) Balance — April 2, 2016 $ 1,049 $ (1,070) $ (1,576) $ (1,597)
Summit Materials, LLC
Accumulated Other Comprehensive Loss	7. The changes in each component of accumulated other comprehensive loss consisted of the following: Accumulated Foreign currency other Change in translation Cash flow hedge comprehensive retirement plans adjustments adjustments loss Balance — December 31, 2016 $ (7,181) $ (17,790) $ (2,473) $ (27,444) Foreign currency translation adjustment — 706 — 706 Income on cash flow hedges — — 412 412 Balance — April 1, 2017 $ (7,181) $ (17,084) $ (2,061) $ (26,326) Balance — January 2, 2016 $ (7,607) $ (19,915) $ (944) $ (28,466) Foreign currency translation adjustment — 4,642 — 4,642 Loss on cash flow hedges — — (2,234) (2,234) Balance — April 2, 2016 $ (7,607) $ (15,273) $ (3,178) $ (26,058)

Income Taxes

Income Taxes	3 Months Ended
	Apr. 01, 2017
Income Taxes	8. Summit Inc.’s tax provision includes its proportional share of Summit Holdings’ tax attributes. Summit Holdings’ subsidiaries are primarily limited liability companies, but do include certain entities organized as C corporations and a Canadian subsidiary. The tax attributes related to the limited liability companies are passed on to Summit Holdings and then to its partners, including Summit Inc. The tax attributes associated with the C corporation and Canadian subsidiaries are fully reflected in the Company’s accounts. As of April 1, 2017 and December 31, 2016, Summit Inc. had a valuation allowance on net deferred tax assets of $517.2 million and $502.8 million, respectively, which primarily consisted of a temporary difference related to the tax intangible assets basis in excess of book. In assessing the realizability of deferred tax assets, including the deferred tax assets generated under the tax receivable agreement described below, management determined that it was more likely than not that a portion of the deferred tax assets will not be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income during the periods in which those temporary differences become deductible and consideration of tax-planning strategies. Considering these factors, an increase in valuation allowance was recorded, which has resulted in no provision for the three months ended April 1, 2017. The effective tax rate for Summit Inc. differs from the federal rate primarily due to (1) the change in valuation allowance, (2) tax depletion expense in excess of the expense recorded under U.S. GAAP, (3) the minority interest in the partnership that is allocated outside of the Company and (4) various other items such as limitations on meals and entertainment, certain stock compensation and other costs. Tax Receivable Agreement —The Company is party to a tax receivable agreement with the holders of LP Units and certain other pre-initial public offering owners (“Investor Entities”) that provides for the payment by Summit Inc. to exchanging holders of LP Units of 85% of the benefits, if any, that Summit Inc. is deemed to realize as a result of (i) increases in the tax basis of tangible and intangible assets of Summit Holdings and (ii) the utilization of certain net operating losses of the Investor Entities and certain other tax benefits related to entering into the tax receivable agreement, including tax benefits attributable to payments under the tax receivable agreement. In the three months ended April 1, 2017, 236,095 LP Units were acquired by Summit Inc. in exchange for an equal number of newly-issued shares of Summit Inc.’s Class A common stock. This exchange resulted in a deferred tax asset of approximately $2.7 million, 85% of which is a liability due to the holders of the exchanged LP Units. As discussed above, a valuation allowance was recognized on the deferred tax asset. As realization of the full tax benefit is not currently deemed probable, the related liability to the former holders of LP Units exchanged is not considered probable and is not included in the consolidated balance sheet. The Company considers all available evidence (both positive and negative), including continuing periods of income and other tax planning strategies, in determining whether realization of the tax benefit is more likely than not. The Company will continue to monitor facts and circumstances in the reassessment of the likelihood that the tax benefit will be realized. If this were to occur through regular operations, the valuation allowance, or portion thereof, would be released with a corresponding charge to Other Expense for the liability due to former LP Unit holders equal to 85% of the valuation allowance release. Tax Distributions – The holders of Summit Holdings’ LP Units, including Summit Inc., incur U.S. federal, state and local income taxes on their share of any taxable income of Summit Holdings. The limited partnership agreement of Summit Holdings provides for pro rata cash distributions (“tax distributions”) to the holders of the LP Units in an amount generally calculated to provide each holder of LP Units with sufficient cash to cover its tax liability in respect of the LP Units. In general, these tax distributions are computed based on Summit Holdings’ estimated taxable income allocated to each holder of LP Units multiplied by an assumed tax rate equal to the highest effective marginal combined U.S. federal, state and local income tax rate applicable to an individual or corporate resident in New York, New York (or a corporate resident in certain circumstances). In the three months ended April 1, 2017 $79,000 of tax distribution payments and none were made for the three months ended April 2, 2016. C Corporation Subsidiaries — The effective income tax rate for the C corporations differ from the statutory federal rate primarily due to (1) tax depletion expense in excess of the expense recorded under U.S. GAAP, (2) state income taxes and the effect of graduated tax rates and (3) various other items such as limitations on meals and entertainment and other costs. The effective income tax rate for the Canadian subsidiary is not significantly different from its historical effective tax rate. As of April 1, 2017 and December 31, 2016, Summit Inc. and its subsidiaries had 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 during the three months ended April 1, 2017, or April 2, 2016.
Summit Materials, LLC
Income Taxes	8. Summit LLC 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, state, and Canadian income tax returns due to their status as taxable entities in the respective jurisdiction. The effective income tax rate for the C Corporations differs from the statutory federal rate primarily due to (1) tax depletion expense in excess of the expense recorded under U.S. GAAP, (2) state income taxes and the effect of graduated tax rates and (3) various other items, such as limitations on meals and entertainment and other costs. The effective income tax rate for the Canadian subsidiary is not significantly different from its historical effective tax rate. As of April 1, 2017 and December 31, 2016, 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 during the three months ended April 1, 2017 and April 2, 2016.

Net Loss Per Share

Net Loss Per Share	3 Months Ended
	Apr. 01, 2017
Net Loss Per Share
Net Loss Per Share	9. NET LOSS PER SHARE Basic loss per share is computed by dividing net loss by the weighted average common shares outstanding and diluted net loss is computed by dividing net loss, adjusted for changes in the earnings allocated to Summit Inc. as a result of the assumed conversion of LP Units, by the weighted-average common shares outstanding assuming dilution. The following table shows the calculation of basic loss per share: Three months ended April 1, April 2, 2017 2016 Net loss attributable to Summit Inc. $ (52,444) $ (21,118) Weighted average shares of Class A shares outstanding 105,171,661 50,882,663 Basic loss per share $ (0.50) $ (0.42) Excluded from the above calculations for the three months ended April 1, 2017 were 4,915,202 LP Units, 5,311,863 time-vesting stock options, 527,393 time-vesting restricted stock units, 211,455 market-based restricted stock units and 160,333 warrants, as they were antidilutive. Excluded from the above calculations for the three months ended April 2, 2016 were 50,261,471 LP Units, 2,767,458 time-vesting stock options, 336,657 time-vesting restricted stock units, 130,691 market-based restricted stock units and 160,333 warrants, as they were antidilutive.

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Apr. 01, 2017
Commitments and Contingencies	10. 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. 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 records 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 Excavating, Inc., Harper Ready Mix Company, Inc. and Harper Investments, Inc. 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 has incurred significant losses on a highway project in Utah, which have resulted in requests for funding from the joint venture partners and ultimately from the Company. Through April 1, 2017, the Company has funded $8.8 million, $4.0 million in 2012 and $4.8 million in 2011. In 2012 and 2011, the Company recognized losses on the indemnification agreement of $8.0 million and $1.9 million, respectively. As of April 1, 2017 and December 31, 2016, an accrual of $4.3 million was recorded in other noncurrent liabilities as management’s best estimate of future funding obligations. Environmental Remediation and Site Restoration —The Company’s operations are subject to and affected by federal, state, provincial 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. The Company 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 or noncompliance will not have a material adverse effect on the Company’s consolidated financial condition, results of operations or liquidity. The Company has asset retirement obligations arising from regulatory and contractual requirements to perform reclamation activities at the time certain quarries and landfills are closed. As of April 1, 2017 and December 31, 2016, $20.4 million and $18.8 million, respectively, were included in other noncurrent liabilities on the consolidated balance sheets and $5.9 million and $5.1 million, respectively, were included in accrued expenses for future reclamation costs. The total undiscounted anticipated costs for site reclamation as of April 1, 2017 and December 31, 2016 were $67.6 million and $63.6 million, respectively. Other —The Company is obligated under various firm purchase commitments for certain raw materials and services that are in the ordinary course of business. 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 condition, results of operations, and cash flows of the Company. The terms of the purchase commitments generally approximate one year.
Summit Materials, LLC
Commitments and Contingencies	9. 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. 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 records 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 Excavating, Inc., Harper Ready Mix Company, Inc. and Harper Investments, Inc. 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 has incurred significant losses on a highway project in Utah, which have resulted in requests for funding from the joint venture partners and ultimately from the Company. Through April 1, 2017, the Company has funded $8.8 million, $4.0 million in 2012 and $4.8 million in 2011. In 2012 and 2011, the Company recognized losses on the indemnification agreement of $8.0 million and $1.9 million, respectively. As of April 1, 2017 and December 31, 2016, an accrual of $4.3 million was recorded in other noncurrent liabilities as management’s best estimate of future funding obligations. Environmental Remediation and Site Restoration —The Company’s operations are subject to and affected by federal, state, provincial 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. The Company 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 or noncompliance will not have a material adverse effect on the Company’s consolidated financial condition, results of operations or liquidity. The Company has asset retirement obligations arising from regulatory and contractual requirements to perform reclamation activities at the time certain quarries and landfills are closed. As of April 1, 2017 and December 31, 2016, $20.4 million and $18.8 million, respectively, were included in other noncurrent liabilities on the consolidated balance sheets and $5.9 million and $5.1 million, respectively, were included in accrued expenses for future reclamation costs. The total undiscounted anticipated costs for site reclamation as of April 1, 2017 and December 31, 2016 were $67.6 million and $63.6 million, respectively. Other —The Company is obligated under various firm purchase commitments for certain raw materials and services that are in the ordinary course of business. 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 condition, results of operations, and cash flows of the Company. The terms of the purchase commitments generally approximate one year.

Supplemental Cash Flow Informat

Supplemental Cash Flow Information	3 Months Ended
	Apr. 01, 2017
Supplemental Cash Flow Information	11. SUPPLEMENTAL CASH FLOW INFORMATION Supplemental cash flow information is as follows: Three months ended April 1, April 2, 2017 2016 Cash payments: Interest $ 26,727 $ 28,129 Income taxes 230 269 Non cash financing activities: Exchange of LP units to shares of Class A 5,753 —
Summit Materials, LLC
Supplemental Cash Flow Information	10. Supplemental cash flow information is as follows: Three months ended April 1, April 2, 2017 2016 Cash payments: Interest $ 26,727 $ 28,129 Income taxes 230 269

Segment Information

Segment Information	3 Months Ended
	Apr. 01, 2017
Segment Information	12. SEGMENT INFORMATION The Company has three operating segments: West; East; and Cement, which are its reporting segments. These segments are consistent with the Company’s management reporting structure. The operating results of each segment are regularly reviewed and evaluated by the Chief Executive Officer, the Company’s Chief Operating Decision Maker (“CODM”). The CODM primarily evaluates the performance of its segments and allocates resources to them based on a segment profit metric that we call Adjusted EBITDA, which is computed as earnings from continuing operations before interest, taxes, depreciation, depletion, amortization, accretion, share-based compensation, and transaction costs, as well as various other non-recurring, non-cash amounts. The West and East segments are engaged in various activities including quarry mining, aggregate production and contracting. The Cement segment is engaged in the production of Portland cement. Assets employed by each 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 the consolidated financial statements. The following tables display selected financial data for the Company’s reportable business segments as of April 1, 2017 and December 31, 2016 and for the three months ended April 1, 2017 and April 2, 2016: Three months ended April 1, April 2, 2017 2016 Revenue*: West $ 143,219 $ 123,717 East 97,223 70,674 Cement 43,835 33,988 Total revenue $ 284,277 $ 228,379 * Three months ended April 1, April 2, 2017 2016 Revenue by product*: Aggregates $ 61,622 $ 49,908 Cement 39,435 28,536 Ready-mix concrete 93,177 80,166 Asphalt 19,537 12,656 Paving and related services 36,296 27,148 Other 34,210 29,965 Total revenue $ 284,277 $ 228,379 * Three months ended April 1, April 2, 2017 2016 Adjusted EBITDA: West $ 15,699 $ 13,279 East 4,348 3,173 Cement 2,685 971 Corporate and other (9,102) (9,014) Total Adjusted EBITDA 13,630 8,409 Interest expense 24,969 21,577 Depreciation, depletion and amortization 39,304 31,900 Accretion 444 460 Loss on debt financings 190 — Transaction costs 1,273 3,316 Non-cash compensation 4,748 2,036 Other (12) (180) Loss from continuing operations before taxes $ (57,286) $ (50,700) Three months ended April 1, April 2, 2017 2016 Purchases of property, plant and equipment West $ 26,562 $ 23,252 East 15,706 11,050 Cement 7,673 4,229 Total reportable segments 49,941 38,531 Corporate and other 1,115 594 Total purchases of property, plant and equipment $ 51,056 $ 39,125 Three months ended April 1, April 2, 2017 2016 Depreciation, depletion, amortization and accretion: West $ 15,663 $ 16,036 East 15,378 10,431 Cement 8,048 5,259 Total reportable segments 39,089 31,726 Corporate and other 659 634 Total depreciation, depletion, amortization and accretion $ 39,748 $ 32,360 April 1, December 31, 2017 2016 Total assets: West $ 1,015,778 $ 902,763 East 921,578 870,613 Cement 878,571 868,440 Total reportable segments 2,815,927 2,641,816 Corporate and other 155,936 139,650 Total $ 2,971,863 $ 2,781,466
Summit Materials, LLC
Segment Information	11. The Company has three operating segments: West; East; and Cement, which are its reporting segments. These segments are consistent with the Company’s management reporting structure. The operating results of each segment are regularly reviewed and evaluated by the Chief Executive Officer, the Company’s Chief Operating Decision Maker (“CODM”). The CODM primarily evaluates the performance of its segments and allocates resources to them based on a segment profit metric that we call Adjusted EBITDA, which is computed as earnings from continuing operations before interest, taxes, depreciation, depletion, amortization, accretion, share-based compensation, and transaction costs, as well as various other non-recurring, non-cash amounts. The West and East segments are engaged in various activities including quarry mining, aggregate production and contracting. The Cement segment is engaged in the production of Portland cement. Assets employed by each 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 the consolidated financial statements. The following tables display selected financial data for the Company’s reportable business segments as of April 1, 2017 and December 31, 2016 and for the three months ended April 1, 2017 and April 2, 2016: Three months ended April 1, April 2, 2017 2016 Revenue*: West $ 143,219 $ 123,717 East 97,223 70,674 Cement 43,835 33,988 Total revenue $ 284,277 $ 228,379 * Three months ended April 1, April 2, 2017 2016 Revenue by product*: Aggregates $ 61,622 $ 49,908 Cement 39,435 28,536 Ready-mix concrete 93,177 80,166 Asphalt 19,537 12,656 Paving and related services 36,296 27,148 Other 34,210 29,965 Total revenue $ 284,277 $ 228,379 * Three months ended April 1, April 2, 2017 2016 Adjusted EBITDA: West $ 15,699 $ 13,279 East 4,348 3,173 Cement 2,685 971 Corporate and other (9,102) (8,997) Total Adjusted EBITDA 13,630 8,426 Interest expense 24,715 21,286 Depreciation, depletion and amortization 39,304 31,900 Accretion 444 460 Loss on debt financings 190 — Transaction costs 1,273 3,316 Non-cash compensation 4,748 2,036 Other (12) (180) Loss from continuing operations before taxes $ (57,032) $ (50,392) Three months ended April 1, April 2, 2017 2016 Purchases of property, plant and equipment West $ 26,562 $ 23,252 East 15,706 11,050 Cement 7,673 4,229 Total reportable segments 49,941 38,531 Corporate and other 1,115 594 Total purchases of property, plant and equipment $ 51,056 $ 39,125 Three months ended April 1, April 2, 2017 2016 Depreciation, depletion, amortization and accretion: West $ 15,663 $ 16,036 East 15,378 10,431 Cement 8,048 5,259 Total reportable segments 39,089 31,726 Corporate and other 659 634 Total depreciation, depletion, amortization and accretion $ 39,748 $ 32,360 April 1, December 31, 2017 2016 Total assets: West $ 1,015,778 $ 902,763 East 921,578 870,613 Cement 878,571 868,440 Total reportable segments 2,815,927 2,641,816 Corporate and other 149,267 134,604 Total $ 2,965,194 $ 2,776,420

Related Party Transactions

Related Party Transactions	3 Months Ended
	Apr. 01, 2017
Related Party Transactions	13. RELATED PARTY TRANSACTIONS Blackstone Advisory Partners L.P., an affiliate of Blackstone Management Partners L.L.C., served as an initial purchaser of $18.8 million of the 2022 Notes issued in March 2016, and received compensation in connection therewith.
Summit Materials, LLC
Related Party Transactions	12. Blackstone Advisory Partners L.P., an affiliate of Blackstone Management Partners L.L.C., served as an initial purchaser of $18.8 million of the 2022 Notes issued in March 2016 and received compensation in connection therewith.

Senior Notes' Guarantor and Non

Senior Notes' Guarantor and Non-Guarantor Financial Information	3 Months Ended
	Apr. 01, 2017
Summit Materials, LLC
Senior Notes' Guarantor and Non-Guarantor Financial Information	13. Summit LLC’s domestic wholly-owned subsidiary companies other than Finance Corp. are named as guarantors (collectively, the “Guarantors”) of the Senior Notes. Finance Corp. does not and will not have any assets or operations other than as may be incidental to its activities as a co-issuer of the Senior Notes and other indebtedness. Certain other partially-owned subsidiaries and a non-U.S. entity do not guarantee the Senior Notes (collectively, the “Non-Guarantors”). The Guarantors provide a joint and several, full and unconditional guarantee of the Senior Notes. There are no significant restrictions on Summit LLC’s 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 LLC or its direct or indirect subsidiaries. The following condensed consolidating balance sheets, statements of operations and cash flows are provided for the Issuers, 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 the financial position, results of operations or cash flows had the guarantor or non-guarantor subsidiaries operated as independent entities. Condensed Consolidating Balance Sheets April 1, 2017 100% Owned Non- Issuers Guarantors Guarantors Eliminations Consolidated Assets Current assets: Cash and cash equivalents $ 155,887 $ 3,023 $ 16,421 $ (19,224) $ 156,107 Accounts receivable, net — 148,591 6,354 (101) 154,844 Intercompany receivables 609,926 268,153 — (878,079) — Cost and estimated earnings in excess of billings — 14,243 683 — 14,926 Inventories — 181,604 5,394 — 186,998 Other current assets 2,027 9,052 959 — 12,038 Total current assets 767,840 624,666 29,811 (897,404) 524,913 Property, plant and equipment, net 7,390 1,500,769 20,100 — 1,528,259 Goodwill — 800,885 47,149 — 848,034 Intangible assets, net — 17,685 — — 17,685 Other assets 3,256,860 124,988 1,945 (3,337,490) 46,303 Total assets $ 4,032,090 $ 3,068,993 $ 99,005 $ (4,234,894) $ 2,965,194 Liabilities and Member’s Interest Current liabilities: Current portion of debt $ 6,500 $ — $ — $ — $ 6,500 Current portion of acquisition-related liabilities — 15,352 — — 15,352 Accounts payable 326 99,573 4,984 (101) 104,782 Accrued expenses 37,814 81,209 921 (19,224) 100,720 Intercompany payables 505,756 365,109 7,214 (878,079) — Billings in excess of costs and estimated earnings — 12,659 201 — 12,860 Total current liabilities 550,396 573,902 13,320 (897,404) 240,214 Long-term debt 1,513,057 — — — 1,513,057 Acquisition-related liabilities — 28,459 — — 28,459 Other noncurrent liabilities 2,904 227,348 56,368 (165,241) 121,379 Total liabilities 2,066,357 829,709 69,688 (1,062,645) 1,903,109 Total member's interest 1,965,733 2,239,284 29,317 (3,172,249) 1,062,085 Total liabilities and member’s interest $ 4,032,090 $ 3,068,993 $ 99,005 $ (4,234,894) $ 2,965,194 Condensed Consolidating Balance Sheets December 31, 2016 100% Owned Non- Issuers Guarantors Guarantors Eliminations Consolidated Assets Current assets: Cash and cash equivalents $ 133,862 $ 4,820 $ 14,656 $ (10,666) $ 142,672 Accounts receivable, net — 155,389 7,090 (102) 162,377 Intercompany receivables 521,658 321,776 — (843,434) — Cost and estimated earnings in excess of billings — 6,830 620 — 7,450 Inventories — 153,374 4,305 — 157,679 Other current assets 1,259 11,012 529 — 12,800 Total current assets 656,779 653,201 27,200 (854,202) 482,978 Property, plant and equipment, net 7,033 1,418,902 20,517 — 1,446,452 Goodwill — 735,490 46,722 — 782,212 Intangible assets, net — 17,989 — — 17,989 Other assets 3,202,706 125,270 1,946 (3,283,133) 46,789 Total assets $ 3,866,518 $ 2,950,852 $ 96,385 $ (4,137,335) $ 2,776,420 Liabilities and Member’s Interest Current liabilities: Current portion of debt $ 6,500 $ — $ — $ — $ 6,500 Current portion of acquisition-related liabilities 1,000 20,663 — — 21,663 Accounts payable 1,497 76,886 3,329 (102) 81,610 Accrued expenses 46,460 73,807 872 (10,666) 110,473 Intercompany payables 509,503 327,405 6,526 (843,434) — Billings in excess of costs and estimated earnings — 15,242 214 — 15,456 Total current liabilities 564,960 514,003 10,941 (854,202) 235,702 Long-term debt 1,514,456 — — — 1,514,456 Acquisition-related liabilities — 25,161 — — 25,161 Other noncurrent liabilities 2,395 231,199 56,356 (165,242) 124,708 Total liabilities 2,081,811 770,363 67,297 (1,019,444) 1,900,027 Total member's interest 1,784,707 2,180,489 29,088 (3,117,891) 876,393 Total liabilities and member’s interest $ 3,866,518 $ 2,950,852 $ 96,385 $ (4,137,335) $ 2,776,420 Condensed Consolidating Statements of Operations For the three months ended April 1, 2017 100% Owned Non- Issuers Guarantors Guarantors Eliminations Consolidated Revenue $ — 276,375 9,410 (1,508) $ 284,277 Cost of revenue (excluding items shown separately below) — 211,992 7,088 (1,508) 217,572 General and administrative expenses 15,050 43,373 1,318 — 59,741 Depreciation, depletion, amortization and accretion 658 38,439 651 — 39,748 Operating (loss) income (15,708) (17,429) 353 — (32,784) Other loss (income), net 15,410 235 (35) (16,077) (467) Interest expense 23,638 213 864 — 24,715 Loss from continuing operations before taxes (54,756) (17,877) (476) 16,077 (57,032) Income tax (benefit) expense — (2,180) 2 — (2,178) Net loss (54,756) (15,697) (478) 16,077 (54,854) Net loss attributable to noncontrolling interest — — — (98) (98) Net loss attributable to member of Summit Materials, LLC $ (54,756) $ (15,697) $ (478) $ 16,175 $ (54,756) Comprehensive loss attributable to member of Summit Materials, LLC $ (53,638) $ (16,109) $ (1,184) $ 17,293 $ (53,638) Condensed Consolidating Statements of Operations For the three months ended April 2, 2016 100% Owned Non- Issuers Guarantors Guarantors Eliminations Consolidated Revenue $ — $ 221,655 $ 8,688 $ (1,964) $ 228,379 Cost of revenue (excluding items shown separately below) — 172,888 5,866 (1,964) 176,790 General and administrative expenses 14,183 33,066 1,437 — 48,686 Depreciation, depletion, amortization and accretion 634 30,669 1,057 — 32,360 Operating (loss) income (14,817) (14,968) 328 — (29,457) Other expense (income), net 12,249 331 (183) (12,748) (351) Interest expense 15,098 5,328 860 — 21,286 Loss from continuing operations before taxes (42,164) (20,627) (349) 12,748 (50,392) Income tax benefit — (8,088) (61) — (8,149) Net loss (42,164) (12,539) (288) 12,748 (42,243) Net loss attributable to noncontrolling interest — — — (79) (79) Net loss attributable to member of Summit Materials, LLC $ (42,164) $ (12,539) $ (288) $ 12,827 $ (42,164) Comprehensive (loss) income attributable to member of Summit Materials, LLC $ (39,756) $ (14,773) $ 4,354 $ 10,419 $ (39,756) Condensed Consolidating Statements of Cash Flows For the three months ended April 1, 2017 100% Owned Non- Issuers Guarantors Guarantors Eliminations Consolidated Net cash (used in) provided by operating activities $ (42,891) $ (4,035) $ 1,850 $ — $ (45,076) Cash flow from investing activities: Acquisitions, net of cash acquired — (112,333) — — (112,333) Purchase of property, plant and equipment (1,115) (49,931) (10) — (51,056) Proceeds from the sale of property, plant, and equipment — 4,325 — — 4,325 Other — 974 — — 974 Net cash used for investing activities (1,115) (156,965) (10) — (158,090) Cash flow from financing activities: Proceeds from investment by member 164,795 73,834 — — 238,629 Capital issuance costs (638) — — — (638) Loans received from and payments made on loans from other Summit Companies (92,904) 101,616 (154) (8,558) — Payments on long-term debt (1,625) (1,941) — — (3,566) Payments on acquisition-related liabilities — (13,914) — — (13,914) Financing costs (699) — — — (699) Distributions from partnership (2,579) — — — (2,579) Other (319) (392) (21) — (732) Net cash provided by (used for) financing activities 66,031 159,203 (175) (8,558) 216,501 Impact of cash on foreign currency — — 100 — 100 Net increase (decrease) in cash 22,025 (1,797) 1,765 (8,558) 13,435 Cash — Beginning of period 133,862 4,820 14,656 (10,666) 142,672 Cash — End of period $ 155,887 $ 3,023 $ 16,421 $ (19,224) $ 156,107 Condensed Consolidating Statements of Cash Flows For the three months ended April 2, 2016 100% Owned Non- Issuers Guarantors Guarantors Eliminations Consolidated Net cash (used in) provided by operating activities $ (44,336) $ 5,841 $ (3,463) $ — $ (41,958) Cash flow from investing activities: Acquisitions, net of cash acquired (42,073) (207,038) — — (249,111) Purchase of property, plant and equipment (593) (38,295) (237) — (39,125) Proceeds from the sale of property, plant, and equipment — 6,019 — — 6,019 Net cash used for investing activities (42,666) (239,314) (237) — (282,217) Cash flow from financing activities: Proceeds from investment by member (448,711) 448,711 — — — Capital issuance costs — — — — — Net proceeds from debt issuance 250,000 — — — 250,000 Loans received from and payments made on loans from other Summit Companies 206,028 (206,820) (445) 1,237 — Payments on long-term debt (1,625) (1,833) — — (3,458) Payments on acquisition-related liabilities (400) (9,073) — — (9,473) Financing costs (5,001) — — — (5,001) Distributions from partnership (2,500) — — — (2,500) Net cash (used for) provided by financing activities (2,209) 230,985 (445) 1,237 229,568 Impact of cash on foreign currency — — 446 — 446 Net decrease in cash (89,211) (2,488) (3,699) 1,237 (94,161) Cash — Beginning of period 180,712 4,068 12,208 (11,600) 185,388 Cash — End of period $ 91,501 $ 1,580 $ 8,509 $ (10,363) $ 91,227

Summary of Organization and S22

Summary of Organization and Significant Accounting Policies (Policies)	3 Months Ended
	Apr. 01, 2017
Company Information
Initial Public Offering	On September 23, 2014, Summit Inc. was formed as a Delaware corporation to be a holding company. Its sole material asset is a controlling equity interest in Summit Materials Holdings L.P. (“Summit Holdings”). Pursuant to a reorganization into a holding company structure (the “Reorganization”) consummated in connection with Summit Inc.’s March 2015 initial public offering, Summit Inc. became a holding corporation operating and controlling all of the business and affairs of Summit Holdings and its subsidiaries and, through Summit Holdings, conducts its business.
Follow-On Offering	On January 10, 2017, Summit Inc. raised $237.6 million, net of underwriting discounts, through the issuance of 10,000,000 shares of Class A common stock at a public offering price of $24.05 per share. Summit Inc. used these proceeds to purchase an equal number of limited partnership interests in Summit Holdings (“LP Units”) and caused Summit Holdings to use a portion of the proceeds from the offering to acquire two materials-based companies for a combined purchase price of approximately $110 million in cash, with remaining net proceeds to be used for general corporate purposes, which may include, but is not limited to, funding acquisitions, repaying indebtedness, capital expenditures and funding working capital.
Basis of Presentation	Basis of Presentation —These unaudited consolidated financial statements were prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) for interim financial information, without audit, pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). Certain information and footnote disclosures typically included in financial statements prepared in accordance with U.S. 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 31, 2016. 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 April 1, 2017 and the results of operations and cash flows for the three months ended April 1, 2017 and April 2, 2016.
Principles of Consolidation	Principles of Consolidation —The consolidated financial statements include the accounts of Summit Inc. and its majority owned subsidiaries. All intercompany balances and transactions have been eliminated. As a result of the Reorganization, Summit Holdings became a variable interest entity over which Summit Inc. has 100% voting power and control and for which Summit Inc. has the obligation to absorb losses and the right to receive benefits. As a result, Summit Inc. is Summit Holdings’ primary beneficiary and thus consolidates Summit Holdings in its consolidated financial statements with a corresponding noncontrolling interest elimination, which was 4.4% and 5.1% as of April 1, 2017 and December 31, 2016, respectively. Noncontrolling interests in consolidated subsidiaries represent a 20% ownership in Ohio Valley Asphalt, LLC. The Company attributes consolidated stockholders’ equity and net income separately to the controlling and noncontrolling interests. The Company accounts for investments in entities for which it has an ownership of 20% to 50% using the equity method of accounting.
Use of Estimates	Use of Estimates —Preparation of these consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions. These estimates and the underlying assumptions affect the amounts of assets and liabilities reported, disclosures about contingent assets and liabilities and reported amounts of revenue and expenses. Such estimates include the valuation of accounts receivable, inventories, valuation of deferred tax assets, 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 paving and related services are 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. 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 when the change in estimate occurs.
Business and Credit Concentrations	Business and Credit Concentrations— The Company’s operations are conducted primarily across 21 U.S. states and in British Columbia, Canada, with the most significant revenue generated in Texas, Kansas, 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 a significant concentration of credit exists with respect to any individual customer or group of customers. No single customer accounted for more than 10% of the Company’s total revenue in the three months ended April 1, 2017 and April 2, 2016.
Earnings per Share	Earnings per Share— The Company computes basic earnings per share attributable to stockholders by dividing income attributable to Summit Inc. by the weighted-average shares of Class A common stock outstanding. Diluted earnings per share reflects the potential dilution beyond shares for basic earnings per share that could occur if securities or other contracts to issue common stock were exercised, converted into common stock, or resulted in the issuance of common stock that would have shared in the Company’s earnings. Since the Class B common stock has no economic value, those shares are not included in the weighted-average common share amount for basic or diluted earnings per share. In addition, as the shares of Class A common stock are issued by Summit Inc., the earnings and equity interests of noncontrolling interests are not included in basic earnings per share.
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 only be made if earn-out thresholds are achieved. Contingent consideration obligations are measured at fair value each reporting period. Any adjustments to fair value are recognized in earnings in the period identified. The Company has entered into interest rate derivatives on $200.0 million of its term loan borrowings to add stability to interest expense and to manage its exposure to interest rate movements. The effective portion of changes in the fair value of derivatives designated and that qualify as cash flow hedges is recorded in accumulated other comprehensive loss and will be subsequently reclassified into earnings in the period that the hedged forecasted transaction affects earnings. The fair value of contingent consideration and derivatives as of April 1, 2017 and December 31, 2016 was: April 1, December 31, 2017 2016 Current portion of acquisition-related liabilities and Accrued expenses: Contingent consideration $ 3,188 $ 9,288 Cash flow hedges 816 942 Acquisition-related liabilities and Other noncurrent liabilities Contingent consideration $ 10,598 $ 2,377 Cash flow hedges 1,123 1,438 The fair value of contingent consideration was 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. The fair value of the cash flow hedges are based on observable, or Level 2, inputs such as interest rates, bond yields and prices in inactive markets. There were no material valuation adjustments to contingent consideration or derivatives in the three months ended April 1, 2017 and April 2, 2016.
Financial Instruments	. Financial Instruments —The Company’s financial instruments include debt and certain acquisition-related liabilities (deferred consideration and noncompete obligations). The carrying value and fair value of these financial instruments as of April 1, 2017 and December 31, 2016 was: April 1, 2017 December 31, 2016 Fair Value Carrying Value Fair Value Carrying Value Level 2 Long-term debt(1) $ 1,582,213 $ 1,534,654 $ 1,586,102 $ 1,536,065 Level 3 Current portion of deferred consideration and noncompete obligations(2) 14,664 14,664 14,874 14,874 Long term portion of deferred consideration and noncompete obligations(3) 23,117 23,117 30,287 30,287 (1) $6.5 million included in current portion of debt as of April 1, 2017 and December 31, 2016. (2) Included in current portion of acquisition-related liabilities on the consolidated balance sheets. (3) Included in acquisition-related liabilities on the consolidated balance sheets. The fair value of debt was determined based on observable, or Level 2, inputs, such as interest rates, bond yields and quoted prices in inactive markets. The fair values of the deferred consideration and noncompete obligations were 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 discount rate used is generally consistent with that used when the obligations were initially recorded. Securities with a maturity of three months or less are considered cash equivalents and the fair value of these assets approximates their carrying value.
New Accounting Standards	New Accounting Standards — In March 2017, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2017-07, Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost , which requires that the service cost component be reported in the same line item as employer compensation costs and that the other components of periodic pension costs be reported outside of operating income. The ASU also restricts capitalization of costs to the service cost component. The ASU is effective for public companies for annual periods beginning after December 15, 2017. The Company early adopted this ASU as of the beginning of fiscal year 2017, on a retrospective basis; accordingly, the Company reclassified $98,000 from product cost of revenue to other income in the three months ended April 2, 2016 to conform to the current year presentation. In January 2017, the FASB issued ASU 2017-04, Simplifying the Test for Goodwill Impairment , which eliminates the two step goodwill impairment test and replaces it with a single step test. The single step test compares the carrying amount of a reporting unit to its fair value; if the carrying amount is greater than the fair value the difference is the amount of the goodwill impairment. Step zero is left unchanged. Therefore, entities that wish to do a qualitative assessment are still permitted to do so. The ASU is effective for SEC filers for fiscal years beginning after December 15, 2020. However, the Company early adopted this ASU as of the beginning of fiscal year 2017. The adoption of this ASU did not have a material impact on the consolidated financial statements. In March 2016, the FASB issued ASU 2016-09, Improvements to Employee Share-Based Payment Accounting, which requires that the income tax effect of share-based awards be recognized in the income statement and allows entities to elect an accounting method to recognize forfeitures as they occur or to estimate forfeitures. The Company early adopted this ASU as of the beginning of fiscal year 2016 and made an election to recognize forfeitures as they occur. The ASU adoption was applied using a modified retrospective method by means of a $1.7 million cumulative-effect adjustment to accumulated earnings (deficit) as of the beginning of the fiscal year.
Summit Materials, LLC
Company Information
Initial Public Offering	Summit LLC is a wholly owned indirect subsidiary of Summit Materials Holdings L.P. (“Summit Holdings”), whose primary owner is Summit Materials, Inc. (“Summit Inc.”). Summit Inc. was formed as a Delaware corporation on September 23, 2014. Its sole material asset is a controlling equity interest in Summit Holdings. Pursuant to a reorganization into a holding company structure (the “Reorganization”) in connection with Summit Inc.’s March 2015 initial public offering, Summit Inc. became a holding corporation operating and controlling all of the business and affairs of Summit Holdings and its subsidiaries, including Summit LLC.
Follow-On Offering	On January 10, 2017, Summit Inc. raised $237.6 million, net of underwriting discounts, through the issuance of 10,000,000 shares of Class A common stock at a public offering price of $24.05 per share. Summit Inc. used these proceeds to purchase an equal number of limited partnership interests in Summit Holdings (“LP Units”) and caused Summit Holdings to use a portion of the proceeds from the offering to acquire two materials-based companies for a combined purchase price of approximately $110 million in cash, with remaining net proceeds to be used for general corporate purposes, which may include, but is not limited to, funding acquisitions, repaying indebtedness, capital expenditures and funding working capital.
Basis of Presentation	Basis of Presentation —These unaudited consolidated financial statements were prepared in accordance with U.S. generally accepted accounting principles (“U.S. 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 U.S. 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 31, 2016. 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 April 1, 2017, and the results of operations and cash flows for the three months ended April 1, 2017 and April 2, 2016
Principles of Consolidation	Principles of Consolidation –The consolidated financial statements include the accounts of Summit LLC and its majority owned subsidiaries. All intercompany balances and transactions have been eliminated. The Company attributes consolidated member’s interest and net income separately to the controlling and noncontrolling interests. Noncontrolling interests in consolidated subsidiaries represent a 20% ownership in Ohio Valley Asphalt, LLC. The Company accounts for investments in entities for which it has an ownership of 20% to 50% using the equity method of accounting.
Use of Estimates	Use of Estimates —Preparation of these consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions. These estimates and the underlying assumptions affect the amounts of assets and liabilities reported, disclosures about contingent assets and liabilities and reported amounts of revenue and expenses. Such estimates include the valuation of accounts receivable, inventories, valuation of deferred tax assets, 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 paving and related services are 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. 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 when the change in estimate occurs.
Business and Credit Concentrations	Business and Credit Concentrations— The Company’s operations are conducted primarily across 21 U.S. states and in British Columbia, Canada, with the most significant revenue generated in Texas, Kansas, 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 a significant concentration of credit exists with respect to any individual customer or group of customers. No single customer accounted for more than 10% of the Company’s total revenue in the three months ended April 1, 2017 and April 2, 2016.
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 only be made if earn-out thresholds are achieved. Contingent consideration obligations are measured at fair value each reporting period. Any adjustments to fair value are recognized in earnings in the period identified. The Company has entered into interest rate derivatives on $200.0 million of its term loan borrowings to add stability to interest expense and to manage its exposure to interest rate movements. The effective portion of changes in the fair value of derivatives designated and that qualify as cash flow hedges is recorded in accumulated other comprehensive loss and will be subsequently reclassified into earnings in the period that the hedged forecasted transaction affects earnings. The fair value of contingent consideration and derivatives as of April 1, 2017 and December 31, 2016 was: April 1, December 31, 2017 2016 Current portion of acquisition-related liabilities and Accrued expenses: Contingent consideration $ 3,188 $ 9,288 Cash flow hedges 816 942 Acquisition-related liabilities and Other noncurrent liabilities Contingent consideration $ 10,598 $ 2,377 Cash flow hedges 1,123 1,438 The fair value of contingent consideration was 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. The fair value of the cash flow hedges are based on observable, or Level 2, inputs such as interest rates, bond yields and prices in inactive markets. There were no material valuation adjustments to contingent consideration or derivatives in the three months ended April 1, 2017 and April 2, 2016.
Financial Instruments	Financial Instruments —The Company’s financial instruments include debt and certain acquisition-related liabilities (deferred consideration and noncompete obligations). The carrying value and fair value of these financial instruments as of April 1, 2017 and December 31, 2016 was: April 1, 2017 December 31, 2016 Fair Value Carrying Value Fair Value Carrying Value Level 2 Long-term debt(1) $ 1,582,213 $ 1,534,654 $ 1,586,102 $ 1,536,065 Level 3 Current portion of deferred consideration and noncompete obligations(2) 12,164 12,164 12,375 12,375 Long term portion of deferred consideration and noncompete obligations(3) 17,861 17,861 22,784 22,784 (1) $6.5 million included in current portion of debt as of April 1, 2017 and December 31, 2016. (2) Included in current portion of acquisition-related liabilities on the consolidated balance sheets. (3) Included in acquisition-related liabilities on the consolidated balance sheets. The fair value of debt was determined based on observable, or Level 2 inputs, such as interest rates, bond yields and quoted prices in inactive markets. The fair values of the deferred consideration and noncompete obligations were 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 discount rate used is generally consistent with that used when the obligations were initially recorded. Securities with a maturity of three months or less are considered cash equivalents and the fair value of these assets approximates their carrying value.
New Accounting Standards	New Accounting Standards — In March 2017, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2017-07, Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost , which requires that the service cost component be reported in the same line item as employer compensation costs and that the other components of periodic pension costs be reported outside of operating income. The ASU also restricts capitalization of costs to the service cost component. The ASU is effective for public companies for annual periods beginning after December 15, 2017. The Company early adopted this ASU as of the beginning of fiscal year 2017, on a retrospective basis; accordingly, the Company reclassified $98,000 from product cost of revenue to other (income) expense in the three months ended April 2, 2016 to conform to the current year presentation. In January 2017, the FASB issued ASU 2017-04, Simplifying the Test for Goodwill Impairment , which eliminates the two step goodwill impairment test and replaces it with a single step test. The single step test compares the carrying amount of a reporting unit to its fair value; if the carrying amount is greater than the fair value the difference is the amount of the goodwill impairment. Step zero is left unchanged. Therefore, entities that wish to do a qualitative assessment are still permitted to do so. The ASU is effective for SEC filers for fiscal years beginning after December 15, 2020. However, the Company early adopted this ASU as of the beginning of fiscal year 2017. The adoption of this ASU did not have a material impact on the consolidated financial statements. In March 2016, the FASB issued ASU 2016-09, Improvements to Employee Share-Based Payment Accounting , which requires that the income tax effect of share-based awards be recognized in the income statement and allows entities to elect an accounting method to recognize forfeitures as they occur or to estimate forfeitures. The Company early adopted this ASU as of the beginning of fiscal year 2016 and made an election to recognize forfeitures as they occur. The ASU adoption was applied using a modified retrospective method by means of a $1.7 million cumulative-effect adjustment to accumulated earnings (deficit) as of the beginning of the fiscal year.

Summary of Organization and S23

Summary of Organization and Significant Accounting Policies (Tables)	3 Months Ended
	Apr. 01, 2017
Company Information
Schedule of Contingent Consideration and Derivatives Measured at Fair Value	April 1, December 31, 2017 2016 Current portion of acquisition-related liabilities and Accrued expenses: Contingent consideration $ 3,188 $ 9,288 Cash flow hedges 816 942 Acquisition-related liabilities and Other noncurrent liabilities Contingent consideration $ 10,598 $ 2,377 Cash flow hedges 1,123 1,438
Schedule of Carrying Value and Fair Value of Financial Instruments	April 1, 2017 December 31, 2016 Fair Value Carrying Value Fair Value Carrying Value Level 2 Long-term debt(1) $ 1,582,213 $ 1,534,654 $ 1,586,102 $ 1,536,065 Level 3 Current portion of deferred consideration and noncompete obligations(2) 14,664 14,664 14,874 14,874 Long term portion of deferred consideration and noncompete obligations(3) 23,117 23,117 30,287 30,287 (1) $6.5 million included in current portion of debt as of April 1, 2017 and December 31, 2016. (2) Included in current portion of acquisition-related liabilities on the consolidated balance sheets. (3) Included in acquisition-related liabilities on the consolidated balance sheets.
Summit Materials, LLC
Company Information
Schedule of Contingent Consideration and Derivatives Measured at Fair Value	April 1, December 31, 2017 2016 Current portion of acquisition-related liabilities and Accrued expenses: Contingent consideration $ 3,188 $ 9,288 Cash flow hedges 816 942 Acquisition-related liabilities and Other noncurrent liabilities Contingent consideration $ 10,598 $ 2,377 Cash flow hedges 1,123 1,438
Schedule of Carrying Value and Fair Value of Financial Instruments	April 1, 2017 December 31, 2016 Fair Value Carrying Value Fair Value Carrying Value Level 2 Long-term debt(1) $ 1,582,213 $ 1,534,654 $ 1,586,102 $ 1,536,065 Level 3 Current portion of deferred consideration and noncompete obligations(2) 12,164 12,164 12,375 12,375 Long term portion of deferred consideration and noncompete obligations(3) 17,861 17,861 22,784 22,784 (1) $6.5 million included in current portion of debt as of April 1, 2017 and December 31, 2016. (2) Included in current portion of acquisition-related liabilities on the consolidated balance sheets. (3) Included in acquisition-related liabilities on the consolidated balance sheets.

Acquisitions (Tables)

Acquisitions (Tables)	3 Months Ended
	Apr. 01, 2017
Summary of Assets Acquired and Liabilities Assumed	Three months ended Year Ended April 1, December 31, 2017 2016 Financial assets (1) $ 6,856 $ 22,204 Inventories 4,603 17,215 Property, plant and equipment 51,253 180,321 Intangible assets 13 5,531 Other assets 1,174 6,757 Financial liabilities (1) (5,147) (20,248) Other long-term liabilities (1,592) (36,074) Net assets acquired 57,160 175,706 Goodwill 64,993 176,319 Purchase price 122,153 352,025 Acquisition related liabilities (9,820) (17,034) Other — 1,967 Net cash paid for acquisitions $ 112,333 $ 336,958 (1) In the first quarter of 2017, we reclassified $1.2 million of accounts payable overdrafts from financial assets to financial liabilities for the year ended December 31, 2016.
Goodwill by Reportable Segment and in Total	West East Cement Total Balance, December 31, 2016 $ 334,257 $ 243,417 $ 204,538 $ 782,212 Acquisitions(1) 57,042 8,235 118 65,395 Foreign currency translation adjustments 427 — — 427 Balance, April 1, 2017 $ 391,726 $ 251,652 $ 204,656 $ 848,034 Accumulated impairment losses as of April 1, 2017 and December 31, 2016 $ (53,264) $ (14,938) $ — $ (68,202) (1) Reflects goodwill from 2017 acquisitions and working capital adjustments from prior year acquisitions.
Intangible Assets by Type and in Total	April 1, 2017 December 31, 2016 Gross Net Gross Net Carrying Accumulated Carrying Carrying Accumulated Carrying Amount Amortization Amount Amount Amortization Amount Leases $ 15,902 $ (3,547) $ 12,355 $ 15,888 $ (3,382) $ 12,506 Reserve rights 6,234 (1,358) 4,876 8,706 (3,710) 4,996 Trade names 1,000 (683) 317 1,000 (658) 342 Other 249 (112) 137 249 (104) 145 Total intangible assets $ 23,385 $ (5,700) $ 17,685 $ 25,843 $ (7,854) $ 17,989
Estimated Amortization Expense for Intangible Assets	Amortization expense totaled $0.3 million and $0.4 million for the three months ended April 1, 2017 and April 2, 2016, respectively. The estimated amortization expense for the intangible assets for each of the five years subsequent to April 1, 2017 is as follows: 2017 (nine months) $ 949 2018 1,279 2019 1,260 2020 1,177 2021 1,135 2022 1,135 Thereafter 10,750 Total $ 17,685
Summit Materials, LLC
Summary of Assets Acquired and Liabilities Assumed	Three months ended Year Ended April 1, December 31, 2017 2016 Financial assets (1) $ 6,856 $ 22,204 Inventories 4,603 17,215 Property, plant and equipment 51,253 180,321 Intangible assets 13 5,531 Other assets 1,174 6,757 Financial liabilities (1) (5,147) (20,248) Other long-term liabilities (1,592) (36,074) Net assets acquired 57,160 175,706 Goodwill 64,993 176,319 Purchase price 122,153 352,025 Acquisition related liabilities (9,820) (17,034) Other — 1,967 Net cash paid for acquisitions $ 112,333 $ 336,958 (1) In the first quarter of 2017, we reclassified $1.2 million of accounts payable overdrafts from financial assets to financial liabilities for the year ended December 31, 2016.
Goodwill by Reportable Segment and in Total	West East Cement Total Balance, December 31, 2016 $ 334,257 $ 243,417 $ 204,538 $ 782,212 Acquisitions(1) 57,042 8,235 118 65,395 Foreign currency translation adjustments 427 — — 427 Balance, April 1, 2017 $ 391,726 $ 251,652 $ 204,656 $ 848,034 Accumulated impairment losses as of April 1, 2017 and December 31, 2016 $ (53,264) $ (14,938) $ — $ (68,202) (1) Reflects goodwill from 2017 acquisitions and working capital adjustments from prior year acquisitions.
Intangible Assets by Type and in Total	April 1, 2017 December 31, 2016 Gross Net Gross Net Carrying Accumulated Carrying Carrying Accumulated Carrying Amount Amortization Amount Amount Amortization Amount Leases $ 15,902 $ (3,547) $ 12,355 $ 15,888 $ (3,382) $ 12,506 Reserve rights 6,234 (1,358) 4,876 8,706 (3,710) 4,996 Trade names 1,000 (683) 317 1,000 (658) 342 Other 249 (112) 137 249 (104) 145 Total intangible assets $ 23,385 $ (5,700) $ 17,685 $ 25,843 $ (7,854) $ 17,989
Estimated Amortization Expense for Intangible Assets	April 2, 2016, respectively. The estimated amortization expense for the intangible assets for each of the five years subsequent to April 1, 2017 is as follows: 2017 (nine months) $ 949 2018 1,279 2019 1,260 2020 1,177 2021 1,135 2022 1,135 Thereafter 10,750 Total $ 17,685

Accounts Receivable, Net (Table

Accounts Receivable, Net (Tables)	3 Months Ended
	Apr. 01, 2017
Summary of Accounts Receivable, Net	April 1, December 31, 2017 2016 Trade accounts receivable $ 147,501 $ 152,845 Retention receivables 10,136 12,117 Receivables from related parties 355 721 Accounts receivable 157,992 165,683 Less: Allowance for doubtful accounts (3,148) (3,306) Accounts receivable, net $ 154,844 $ 162,377
Summit Materials, LLC
Summary of Accounts Receivable, Net	April 1, December 31, 2017 2016 Trade accounts receivable $ 147,501 $ 152,845 Retention receivables 10,136 12,117 Receivables from related parties 355 721 Accounts receivable 157,992 165,683 Less: Allowance for doubtful accounts (3,148) (3,306) Accounts receivable, net $ 154,844 $ 162,377

Inventories (Tables)

Inventories (Tables)	3 Months Ended
	Apr. 01, 2017
Components of Inventories	April 1, December 31, 2017 2016 Aggregate stockpiles $ 114,226 $ 103,073 Finished goods 47,968 35,071 Work in process 5,409 6,440 Raw materials 19,395 13,095 Total $ 186,998 $ 157,679
Summit Materials, LLC
Components of Inventories	April 1, December 31, 2017 2016 Aggregate stockpiles $ 114,226 $ 103,073 Finished goods 47,968 35,071 Work in process 5,409 6,440 Raw materials 19,395 13,095 Total $ 186,998 $ 157,679

Accrued Expenses (Tables)

Accrued Expenses (Tables)	3 Months Ended
	Apr. 01, 2017
Components of Accrued Expenses	April 1, December 31, 2017 2016 Interest $ 18,341 $ 22,991 Payroll and benefits 18,217 30,546 Capital lease obligations 17,396 11,766 Insurance 11,047 11,966 Non-income taxes 7,714 5,491 Professional fees 2,244 2,459 Other(1) 25,761 26,386 Total $ 100,720 $ 111,605 Consists primarily of subcontractor and working capital settlement accruals.
Summit Materials, LLC
Components of Accrued Expenses	April 1, December 31, 2017 2016 Interest $ 18,341 $ 22,991 Payroll and benefits 18,217 30,546 Capital lease obligations 17,396 11,766 Insurance 11,047 11,966 Non-income taxes 7,714 5,491 Professional fees 2,244 2,459 Other(1) 25,761 25,254 Total $ 100,720 $ 110,473 (1)

Debt (Tables)

Debt (Tables)	3 Months Ended
	Apr. 01, 2017
Schedule of Debt	April 1, December 31, 2017 2016 Term Loan, due 2022: $638.6 million and $640.3 million, net of $2.4 million and $2.6 million discount at April 1, 2017 and December 31, 2016, respectively $ 636,186 $ 637,658 8 1 ⁄ 2 % Senior Notes, due 2022 250,000 250,000 6 1 ⁄ 8 % Senior Notes, due 2023: $650.0 million, net of $1.5 million and $1.6 million discount at April 1, 2017 and December 31, 2016, respectively 648,468 648,407 Total 1,534,654 1,536,065 Current portion of long-term debt 6,500 6,500 Long-term debt $ 1,528,154 $ 1,529,565
Schedule of Contractual Payments of Long-Term Debt	The contractual payments of long-term debt, including current maturities, for the five years subsequent to April 1, 2017, are as follows: 2017 (nine months) $ 4,875 2018 4,875 2019 6,500 2020 8,125 2021 6,500 2022 857,750 Thereafter 650,000 Total 1,538,625 Less: Original issue net discount (3,971) Less: Capitalized loan costs (15,097) Total debt $ 1,519,557
Summary of Activity for Deferred Financing Fees	Deferred financing fees Balance—December 31, 2016 $ 18,290 Loan origination fees 699 Amortization (917) Write off of deferred financing fees (45) Balance—April 1, 2017 $ 18,027 Balance—January 2, 2016 $ 15,892 Loan origination fees 5,001 Amortization (729) Balance—April 2, 2016 $ 20,164
Summit Materials, LLC
Schedule of Debt	April 1, December 31, 2017 2016 Term Loan, due 2022: $638.6 million and $640.3 million, net of $2.4 million and $2.6 million discount at April 1, 2017 and December 31, 2016, respectively $ 636,186 $ 637,658 8 1 ⁄ 2 % Senior Notes, due 2022 250,000 250,000 6 1 ⁄ 8 % Senior Notes, due 2023: $650.0 million, net of $1.5 million and $1.6 million discount at April 1, 2017 and December 31, 2016, respectively 648,468 648,407 Total 1,534,654 1,536,065 Current portion of long-term debt 6,500 6,500 Long-term debt $ 1,528,154 $ 1,529,565
Schedule of Contractual Payments of Long-Term Debt	The contractual payments of long-term debt, including current maturities, for the five years subsequent to April 1, 2017, are as follows: 2017 (nine months) $ 4,875 2018 4,875 2019 6,500 2020 8,125 2021 6,500 2022 857,750 Thereafter 650,000 Total 1,538,625 Less: Original issue net discount (3,971) Less: Capitalized loan costs (15,097) Total debt $ 1,519,557
Summary of Activity for Deferred Financing Fees	Deferred financing fees Balance—December 31, 2016 $ 18,290 Loan origination fees 699 Amortization (917) Write off of deferred financing fees (45) Balance—April 1, 2017 $ 18,027 Balance—January 2, 2016 $ 15,892 Loan origination fees 5,001 Amortization (729) Balance—April 2, 2016 $ 20,164

Accumulated Other Comprehensi29

Accumulated Other Comprehensive Income (Loss) (Tables)	3 Months Ended
	Apr. 01, 2017
Schedule of Changes in Each Component of Accumulated Other Comprehensive Income (Loss)	Accumulated Foreign currency other Change in translation Cash flow hedge comprehensive retirement plans adjustments adjustments loss Balance — December 31, 2016 $ 1,450 $ (3,106) $ (593) $ (2,249) Foreign currency translation adjustment — 670 — 670 Income on cash flow hedges — — 393 393 Balance — April 1, 2017 $ 1,450 $ (2,436) $ (200) $ (1,186) Balance — January 2, 2016 $ 1,049 $ (3,379) $ (465) $ (2,795) Foreign currency translation adjustment — 2,309 — 2,309 Loss on cash flow hedges — — (1,111) (1,111) Balance — April 2, 2016 $ 1,049 $ (1,070) $ (1,576) $ (1,597)
Summit Materials, LLC
Schedule of Changes in Each Component of Accumulated Other Comprehensive Income (Loss)	Accumulated Foreign currency other Change in translation Cash flow hedge comprehensive retirement plans adjustments adjustments loss Balance — December 31, 2016 $ (7,181) $ (17,790) $ (2,473) $ (27,444) Foreign currency translation adjustment — 706 — 706 Income on cash flow hedges — — 412 412 Balance — April 1, 2017 $ (7,181) $ (17,084) $ (2,061) $ (26,326) Balance — January 2, 2016 $ (7,607) $ (19,915) $ (944) $ (28,466) Foreign currency translation adjustment — 4,642 — 4,642 Loss on cash flow hedges — — (2,234) (2,234) Balance — April 2, 2016 $ (7,607) $ (15,273) $ (3,178) $ (26,058)

Net Loss Per Share (Tables)

Net Loss Per Share (Tables)	3 Months Ended
	Apr. 01, 2017
Net Loss Per Share
Schedule of Basic Income Per Share	Three months ended April 1, April 2, 2017 2016 Net loss attributable to Summit Inc. $ (52,444) $ (21,118) Weighted average shares of Class A shares outstanding 105,171,661 50,882,663 Basic loss per share $ (0.50) $ (0.42)

Supplemental Cash Flow Inform31

Supplemental Cash Flow Information (Tables)	3 Months Ended
	Apr. 01, 2017
Schedule of Supplemental Cash Flow Information	Three months ended April 1, April 2, 2017 2016 Cash payments: Interest $ 26,727 $ 28,129 Income taxes 230 269 Non cash financing activities: Exchange of LP units to shares of Class A 5,753 —
Summit Materials, LLC
Schedule of Supplemental Cash Flow Information	Three months ended April 1, April 2, 2017 2016 Cash payments: Interest $ 26,727 $ 28,129 Income taxes 230 269

Segment Information (Tables)

Segment Information (Tables)	3 Months Ended
	Apr. 01, 2017
Summary of Financial Data for Company's Reportable Business Segments	Three months ended April 1, April 2, 2017 2016 Revenue*: West $ 143,219 $ 123,717 East 97,223 70,674 Cement 43,835 33,988 Total revenue $ 284,277 $ 228,379 * Three months ended April 1, April 2, 2017 2016 Revenue by product*: Aggregates $ 61,622 $ 49,908 Cement 39,435 28,536 Ready-mix concrete 93,177 80,166 Asphalt 19,537 12,656 Paving and related services 36,296 27,148 Other 34,210 29,965 Total revenue $ 284,277 $ 228,379 * Three months ended April 1, April 2, 2017 2016 Adjusted EBITDA: West $ 15,699 $ 13,279 East 4,348 3,173 Cement 2,685 971 Corporate and other (9,102) (9,014) Total Adjusted EBITDA 13,630 8,409 Interest expense 24,969 21,577 Depreciation, depletion and amortization 39,304 31,900 Accretion 444 460 Loss on debt financings 190 — Transaction costs 1,273 3,316 Non-cash compensation 4,748 2,036 Other (12) (180) Loss from continuing operations before taxes $ (57,286) $ (50,700) Three months ended April 1, April 2, 2017 2016 Purchases of property, plant and equipment West $ 26,562 $ 23,252 East 15,706 11,050 Cement 7,673 4,229 Total reportable segments 49,941 38,531 Corporate and other 1,115 594 Total purchases of property, plant and equipment $ 51,056 $ 39,125 Three months ended April 1, April 2, 2017 2016 Depreciation, depletion, amortization and accretion: West $ 15,663 $ 16,036 East 15,378 10,431 Cement 8,048 5,259 Total reportable segments 39,089 31,726 Corporate and other 659 634 Total depreciation, depletion, amortization and accretion $ 39,748 $ 32,360 April 1, December 31, 2017 2016 Total assets: West $ 1,015,778 $ 902,763 East 921,578 870,613 Cement 878,571 868,440 Total reportable segments 2,815,927 2,641,816 Corporate and other 155,936 139,650 Total $ 2,971,863 $ 2,781,466
Summit Materials, LLC
Summary of Financial Data for Company's Reportable Business Segments	Three months ended April 1, April 2, 2017 2016 Revenue*: West $ 143,219 $ 123,717 East 97,223 70,674 Cement 43,835 33,988 Total revenue $ 284,277 $ 228,379 * Three months ended April 1, April 2, 2017 2016 Revenue by product*: Aggregates $ 61,622 $ 49,908 Cement 39,435 28,536 Ready-mix concrete 93,177 80,166 Asphalt 19,537 12,656 Paving and related services 36,296 27,148 Other 34,210 29,965 Total revenue $ 284,277 $ 228,379 * Three months ended April 1, April 2, 2017 2016 Adjusted EBITDA: West $ 15,699 $ 13,279 East 4,348 3,173 Cement 2,685 971 Corporate and other (9,102) (8,997) Total Adjusted EBITDA 13,630 8,426 Interest expense 24,715 21,286 Depreciation, depletion and amortization 39,304 31,900 Accretion 444 460 Loss on debt financings 190 — Transaction costs 1,273 3,316 Non-cash compensation 4,748 2,036 Other (12) (180) Loss from continuing operations before taxes $ (57,032) $ (50,392) Three months ended April 1, April 2, 2017 2016 Purchases of property, plant and equipment West $ 26,562 $ 23,252 East 15,706 11,050 Cement 7,673 4,229 Total reportable segments 49,941 38,531 Corporate and other 1,115 594 Total purchases of property, plant and equipment $ 51,056 $ 39,125 Three months ended April 1, April 2, 2017 2016 Depreciation, depletion, amortization and accretion: West $ 15,663 $ 16,036 East 15,378 10,431 Cement 8,048 5,259 Total reportable segments 39,089 31,726 Corporate and other 659 634 Total depreciation, depletion, amortization and accretion $ 39,748 $ 32,360 April 1, December 31, 2017 2016 Total assets: West $ 1,015,778 $ 902,763 East 921,578 870,613 Cement 878,571 868,440 Total reportable segments 2,815,927 2,641,816 Corporate and other 149,267 134,604 Total $ 2,965,194 $ 2,776,420

Senior Notes' Guarantor and N33

Senior Notes' Guarantor and Non-Guarantor Financial Information (Tables) - Summit Materials, LLC	3 Months Ended
	Apr. 01, 2017
Condensed Consolidating Balance Sheets	Condensed Consolidating Balance Sheets April 1, 2017 100% Owned Non- Issuers Guarantors Guarantors Eliminations Consolidated Assets Current assets: Cash and cash equivalents $ 155,887 $ 3,023 $ 16,421 $ (19,224) $ 156,107 Accounts receivable, net — 148,591 6,354 (101) 154,844 Intercompany receivables 609,926 268,153 — (878,079) — Cost and estimated earnings in excess of billings — 14,243 683 — 14,926 Inventories — 181,604 5,394 — 186,998 Other current assets 2,027 9,052 959 — 12,038 Total current assets 767,840 624,666 29,811 (897,404) 524,913 Property, plant and equipment, net 7,390 1,500,769 20,100 — 1,528,259 Goodwill — 800,885 47,149 — 848,034 Intangible assets, net — 17,685 — — 17,685 Other assets 3,256,860 124,988 1,945 (3,337,490) 46,303 Total assets $ 4,032,090 $ 3,068,993 $ 99,005 $ (4,234,894) $ 2,965,194 Liabilities and Member’s Interest Current liabilities: Current portion of debt $ 6,500 $ — $ — $ — $ 6,500 Current portion of acquisition-related liabilities — 15,352 — — 15,352 Accounts payable 326 99,573 4,984 (101) 104,782 Accrued expenses 37,814 81,209 921 (19,224) 100,720 Intercompany payables 505,756 365,109 7,214 (878,079) — Billings in excess of costs and estimated earnings — 12,659 201 — 12,860 Total current liabilities 550,396 573,902 13,320 (897,404) 240,214 Long-term debt 1,513,057 — — — 1,513,057 Acquisition-related liabilities — 28,459 — — 28,459 Other noncurrent liabilities 2,904 227,348 56,368 (165,241) 121,379 Total liabilities 2,066,357 829,709 69,688 (1,062,645) 1,903,109 Total member's interest 1,965,733 2,239,284 29,317 (3,172,249) 1,062,085 Total liabilities and member’s interest $ 4,032,090 $ 3,068,993 $ 99,005 $ (4,234,894) $ 2,965,194 Condensed Consolidating Balance Sheets December 31, 2016 100% Owned Non- Issuers Guarantors Guarantors Eliminations Consolidated Assets Current assets: Cash and cash equivalents $ 133,862 $ 4,820 $ 14,656 $ (10,666) $ 142,672 Accounts receivable, net — 155,389 7,090 (102) 162,377 Intercompany receivables 521,658 321,776 — (843,434) — Cost and estimated earnings in excess of billings — 6,830 620 — 7,450 Inventories — 153,374 4,305 — 157,679 Other current assets 1,259 11,012 529 — 12,800 Total current assets 656,779 653,201 27,200 (854,202) 482,978 Property, plant and equipment, net 7,033 1,418,902 20,517 — 1,446,452 Goodwill — 735,490 46,722 — 782,212 Intangible assets, net — 17,989 — — 17,989 Other assets 3,202,706 125,270 1,946 (3,283,133) 46,789 Total assets $ 3,866,518 $ 2,950,852 $ 96,385 $ (4,137,335) $ 2,776,420 Liabilities and Member’s Interest Current liabilities: Current portion of debt $ 6,500 $ — $ — $ — $ 6,500 Current portion of acquisition-related liabilities 1,000 20,663 — — 21,663 Accounts payable 1,497 76,886 3,329 (102) 81,610 Accrued expenses 46,460 73,807 872 (10,666) 110,473 Intercompany payables 509,503 327,405 6,526 (843,434) — Billings in excess of costs and estimated earnings — 15,242 214 — 15,456 Total current liabilities 564,960 514,003 10,941 (854,202) 235,702 Long-term debt 1,514,456 — — — 1,514,456 Acquisition-related liabilities — 25,161 — — 25,161 Other noncurrent liabilities 2,395 231,199 56,356 (165,242) 124,708 Total liabilities 2,081,811 770,363 67,297 (1,019,444) 1,900,027 Total member's interest 1,784,707 2,180,489 29,088 (3,117,891) 876,393 Total liabilities and member’s interest $ 3,866,518 $ 2,950,852 $ 96,385 $ (4,137,335) $ 2,776,420
Condensed Consolidating Statements of Operations and Comprehensive Loss	Condensed Consolidating Statements of Operations For the three months ended April 1, 2017 100% Owned Non- Issuers Guarantors Guarantors Eliminations Consolidated Revenue $ — 276,375 9,410 (1,508) $ 284,277 Cost of revenue (excluding items shown separately below) — 211,992 7,088 (1,508) 217,572 General and administrative expenses 15,050 43,373 1,318 — 59,741 Depreciation, depletion, amortization and accretion 658 38,439 651 — 39,748 Operating (loss) income (15,708) (17,429) 353 — (32,784) Other loss (income), net 15,410 235 (35) (16,077) (467) Interest expense 23,638 213 864 — 24,715 Loss from continuing operations before taxes (54,756) (17,877) (476) 16,077 (57,032) Income tax (benefit) expense — (2,180) 2 — (2,178) Net loss (54,756) (15,697) (478) 16,077 (54,854) Net loss attributable to noncontrolling interest — — — (98) (98) Net loss attributable to member of Summit Materials, LLC $ (54,756) $ (15,697) $ (478) $ 16,175 $ (54,756) Comprehensive loss attributable to member of Summit Materials, LLC $ (53,638) $ (16,109) $ (1,184) $ 17,293 $ (53,638) Condensed Consolidating Statements of Operations For the three months ended April 2, 2016 100% Owned Non- Issuers Guarantors Guarantors Eliminations Consolidated Revenue $ — $ 221,655 $ 8,688 $ (1,964) $ 228,379 Cost of revenue (excluding items shown separately below) — 172,888 5,866 (1,964) 176,790 General and administrative expenses 14,183 33,066 1,437 — 48,686 Depreciation, depletion, amortization and accretion 634 30,669 1,057 — 32,360 Operating (loss) income (14,817) (14,968) 328 — (29,457) Other expense (income), net 12,249 331 (183) (12,748) (351) Interest expense 15,098 5,328 860 — 21,286 Loss from continuing operations before taxes (42,164) (20,627) (349) 12,748 (50,392) Income tax benefit — (8,088) (61) — (8,149) Net loss (42,164) (12,539) (288) 12,748 (42,243) Net loss attributable to noncontrolling interest — — — (79) (79) Net loss attributable to member of Summit Materials, LLC $ (42,164) $ (12,539) $ (288) $ 12,827 $ (42,164) Comprehensive (loss) income attributable to member of Summit Materials, LLC $ (39,756) $ (14,773) $ 4,354 $ 10,419 $ (39,756)
Condensed Consolidating Statements of Cash Flows	Condensed Consolidating Statements of Cash Flows For the three months ended April 1, 2017 100% Owned Non- Issuers Guarantors Guarantors Eliminations Consolidated Net cash (used in) provided by operating activities $ (42,891) $ (4,035) $ 1,850 $ — $ (45,076) Cash flow from investing activities: Acquisitions, net of cash acquired — (112,333) — — (112,333) Purchase of property, plant and equipment (1,115) (49,931) (10) — (51,056) Proceeds from the sale of property, plant, and equipment — 4,325 — — 4,325 Other — 974 — — 974 Net cash used for investing activities (1,115) (156,965) (10) — (158,090) Cash flow from financing activities: Proceeds from investment by member 164,795 73,834 — — 238,629 Capital issuance costs (638) — — — (638) Loans received from and payments made on loans from other Summit Companies (92,904) 101,616 (154) (8,558) — Payments on long-term debt (1,625) (1,941) — — (3,566) Payments on acquisition-related liabilities — (13,914) — — (13,914) Financing costs (699) — — — (699) Distributions from partnership (2,579) — — — (2,579) Other (319) (392) (21) — (732) Net cash provided by (used for) financing activities 66,031 159,203 (175) (8,558) 216,501 Impact of cash on foreign currency — — 100 — 100 Net increase (decrease) in cash 22,025 (1,797) 1,765 (8,558) 13,435 Cash — Beginning of period 133,862 4,820 14,656 (10,666) 142,672 Cash — End of period $ 155,887 $ 3,023 $ 16,421 $ (19,224) $ 156,107 Condensed Consolidating Statements of Cash Flows For the three months ended April 2, 2016 100% Owned Non- Issuers Guarantors Guarantors Eliminations Consolidated Net cash (used in) provided by operating activities $ (44,336) $ 5,841 $ (3,463) $ — $ (41,958) Cash flow from investing activities: Acquisitions, net of cash acquired (42,073) (207,038) — — (249,111) Purchase of property, plant and equipment (593) (38,295) (237) — (39,125) Proceeds from the sale of property, plant, and equipment — 6,019 — — 6,019 Net cash used for investing activities (42,666) (239,314) (237) — (282,217) Cash flow from financing activities: Proceeds from investment by member (448,711) 448,711 — — — Capital issuance costs — — — — — Net proceeds from debt issuance 250,000 — — — 250,000 Loans received from and payments made on loans from other Summit Companies 206,028 (206,820) (445) 1,237 — Payments on long-term debt (1,625) (1,833) — — (3,458) Payments on acquisition-related liabilities (400) (9,073) — — (9,473) Financing costs (5,001) — — — (5,001) Distributions from partnership (2,500) — — — (2,500) Net cash (used for) provided by financing activities (2,209) 230,985 (445) 1,237 229,568 Impact of cash on foreign currency — — 446 — 446 Net decrease in cash (89,211) (2,488) (3,699) 1,237 (94,161) Cash — Beginning of period 180,712 4,068 12,208 (11,600) 185,388 Cash — End of period $ 91,501 $ 1,580 $ 8,509 $ (10,363) $ 91,227

Summary of Organization and S34

Summary of Organization and Significant Accounting Policies - General Information and Equity Offerings (Details) $ / shares in Units, $ in Thousands	Jan. 10, 2017USD ($)item$ / sharesshares	Apr. 01, 2017USD ($)segmentfacilityshares	Dec. 31, 2016
Summary Of Significant Accounting Policies And Recent Accounting Pronouncements
Number of operating segments | segment		3
Equity Offering
Proceeds from sale of common stock, net of underwriting discounts		$ 237,600
Number of Summit LP units purchased by Company, newly issued units (in shares) | shares		236,095
Cement plant
Summary Of Significant Accounting Policies And Recent Accounting Pronouncements
Number of plants | facility		2
Ohio Valley Asphalt
Principles of Consolidation
Noncontrolling interest elimination (as a percent)		20.00%
Summit Materials, LLC
Summary Of Significant Accounting Policies And Recent Accounting Pronouncements
Number of operating segments | segment		3
Summit Materials, LLC | Ohio Valley Asphalt
Principles of Consolidation
Noncontrolling interest elimination (as a percent)		20.00%
Summit Holdings LP
Principles of Consolidation
Voting power (as a percent)		100.00%
Noncontrolling interest elimination (as a percent)		4.40%	5.10%
Follow on Public Offering
Equity Offering
Proceeds from sale of common stock, net of underwriting discounts	$ 237,600
Common stock issued (in shares) | shares	10,000,000
Offering price (in dollars per share) | $ / shares	$ 24.05
Cash paid for acquisitions	$ 110,000
Number of companies acquired | item	2

Summary of Organization and S35

Summary of Organization and Significant Accounting Policies - Business and Credit Concentration (Details)	3 Months Ended	12 Months Ended	15 Months Ended
	Apr. 01, 2017stateitem	Dec. 31, 2016item	Apr. 01, 2017state
Business and Credit Concentrations
Number of states in which the entity operates | state	21		21
Summit Materials, LLC | Sales | Customer Concentration Risk
Business and Credit Concentrations
Number of customers accounted for more than 10% of total revenue | item	0	0
Summit Materials, LLC | Sales | Maximum | Customer Concentration Risk
Business and Credit Concentrations
Customer accounted revenue (as a percent)			10.00%

Summary of Organization and S36

Summary of Organization and Significant Accounting Policies - Fair Value Measurements (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Apr. 01, 2017	Dec. 31, 2016
Level 3
Fair Value Measurements
Current portion of acquisition-related liabilities and Accrued expenses - Contingent consideration	$ 3,188	$ 9,288
Acquisition-related liabilities and Other noncurrent liabilities - Contingent consideration	$ 10,598	2,377
Discount rate	11.00%
Cash flow hedges | Interest rate derivatives | Level 2
Fair Value Measurements
Current portion of acquisition-related liabilities and Accrued expenses - Cash flow hedge	$ 816	942
Acquisition-related liabilities and Other noncurrent liabilities - Cash flow hedge	1,123	1,438
Cash flow hedges | Interest rate derivatives | Term Loan, due 2022
Fair Value Measurements
Term loan borrowings hedged by derivatives	200,000	200,000
Summit Materials, LLC | Level 3
Fair Value Measurements
Current portion of acquisition-related liabilities and Accrued expenses - Contingent consideration	3,188	9,288
Acquisition-related liabilities and Other noncurrent liabilities - Contingent consideration	$ 10,598	$ 2,377
Discount rate	11.00%	11.00%
Summit Materials, LLC | Cash flow hedges | Interest rate derivatives | Level 2
Fair Value Measurements
Current portion of acquisition-related liabilities and Accrued expenses - Cash flow hedge	$ 816	$ 942
Acquisition-related liabilities and Other noncurrent liabilities - Cash flow hedge	1,123	1,438
Summit Materials, LLC | Cash flow hedges | Interest rate derivatives | Term Loan, due 2022
Fair Value Measurements
Term loan borrowings hedged by derivatives	$ 200,000	$ 200,000

Summary of Organization and S37

Summary of Organization and Significant Accounting Policies - Carrying Value and Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Apr. 01, 2017	Dec. 31, 2016	Oct. 01, 2016	Jan. 02, 2016
Financial Instruments
Current portion of debt	$ 6,500	$ 6,500
Summit Materials, LLC
Financial Instruments
Current portion of debt	6,500	6,500
Level 2
Financial Instruments
Current portion of debt			$ 6,500	$ 6,500
Level 2 | Fair Value
Financial Instruments
Long-term debt	1,582,213	1,586,102
Level 2 | Carrying Value
Financial Instruments
Long-term debt	1,534,654	1,536,065
Level 2 | Summit Materials, LLC
Financial Instruments
Current portion of debt	6,500	6,500
Level 2 | Summit Materials, LLC | Fair Value
Financial Instruments
Long-term debt	1,582,213	1,586,102
Level 2 | Summit Materials, LLC | Carrying Value
Financial Instruments
Long-term debt	1,534,654	1,536,065
Level 3 | Fair Value
Financial Instruments
Current portion of deferred consideration and noncompete obligations	14,664	14,874
Long term portion of deferred consideration and noncompete obligations	23,117	30,287
Level 3 | Carrying Value
Financial Instruments
Current portion of deferred consideration and noncompete obligations	14,664	14,874
Long term portion of deferred consideration and noncompete obligations	23,117	30,287
Level 3 | Summit Materials, LLC | Fair Value
Financial Instruments
Current portion of deferred consideration and noncompete obligations	12,164	12,375
Long term portion of deferred consideration and noncompete obligations	17,861	22,784
Level 3 | Summit Materials, LLC | Carrying Value
Financial Instruments
Current portion of deferred consideration and noncompete obligations	12,164	12,375
Long term portion of deferred consideration and noncompete obligations	$ 17,861	$ 22,784

Summary of Organization and S38

Summary of Organization and Significant Accounting Policies - New Accounting Standards (Details) - USD ($)	3 Months Ended
	Apr. 01, 2017	Apr. 02, 2016	Dec. 31, 2016
New Accounting Standards
Cost of Goods Sold	$ 166,968,000	$ 132,396,000
Other expense (income), net	657,000	334,000
Accounting Standards Update 2016-09 | Adjustments for New Accounting Principle, Early Adoption
New Accounting Standards
Cumulative effect adjustment			$ 1,700,000
Accounting Standards Update 2017-07 | Adjustments for New Accounting Principle, Early Adoption
New Accounting Standards
Cost of Goods Sold		(98,000)
Other expense (income), net		(98,000)
Summit Materials, LLC
New Accounting Standards
Cost of Goods Sold	166,968,000	132,396,000
Other expense (income), net	$ 657,000	351,000
Summit Materials, LLC | Accounting Standards Update 2016-09 | Adjustments for New Accounting Principle, Early Adoption
New Accounting Standards
Cumulative effect adjustment			$ 1,700,000
Summit Materials, LLC | Accounting Standards Update 2017-07 | Adjustments for New Accounting Principle, Early Adoption
New Accounting Standards
Cost of Goods Sold		(98,000)
Other expense (income), net		$ (98,000)

Acquisitions - Completed Acquis

Acquisitions - Completed Acquisitions Information (Detail)	Mar. 17, 2017facility	Jan. 30, 2017facility	Oct. 03, 2016facility	Aug. 19, 2016facility	May 20, 2016item	Apr. 29, 2016facilityitem	Mar. 18, 2016facilityitem	Feb. 05, 2016item	Apr. 01, 2017	Dec. 31, 2016
8 1/2% Senior Notes, due 2022
Business Acquisition [Line Items]
Debt Instrument, Interest Rate, Stated Percentage									8.50%	8.50%
Summit Materials, LLC | 8 1/2% Senior Notes, due 2022
Business Acquisition [Line Items]
Debt Instrument, Interest Rate, Stated Percentage									8.50%	8.50%
Everist Materials, LLC | West | Aggregates | Cement plant
Business Acquisition [Line Items]
Number of plants acquired		2
Everist Materials, LLC | West | Ready-mixed concrete | Cement plant
Business Acquisition [Line Items]
Number of plants acquired		5
Everist Materials, LLC | West | Asphalt
Business Acquisition [Line Items]
Number of plants acquired		2
Everist Materials, LLC | Summit Materials, LLC | West | Aggregates | Cement plant
Business Acquisition [Line Items]
Number of plants acquired		2
Everist Materials, LLC | Summit Materials, LLC | West | Ready-mixed concrete | Cement plant
Business Acquisition [Line Items]
Number of plants acquired		5
Everist Materials, LLC | Summit Materials, LLC | West | Asphalt
Business Acquisition [Line Items]
Number of plants acquired		2
Midland Concrete | West | Ready-mixed concrete | Cement plant
Business Acquisition [Line Items]
Number of plants acquired			1
Midland Concrete | Summit Materials, LLC | West | Ready-mixed concrete | Cement plant
Business Acquisition [Line Items]
Number of plants acquired			1
Sandidge Concrete | Summit Materials, LLC | East | Ready-mixed concrete | Cement plant
Business Acquisition [Line Items]
Number of plants acquired	3
Rustin | West | Ready-mixed concrete | Cement plant
Business Acquisition [Line Items]
Number of plants acquired				12
Rustin | Summit Materials, LLC | West | Ready-mixed concrete | Cement plant
Business Acquisition [Line Items]
Number of plants acquired				12
Sierra Ready Mix, LLC | West | Aggregates
Business Acquisition [Line Items]
Number of sand and gravel pits acquired | item						1
Sierra Ready Mix, LLC | West | Ready-mixed concrete | Cement plant
Business Acquisition [Line Items]
Number of plants acquired						2
Sierra Ready Mix, LLC | Summit Materials, LLC | West | Aggregates
Business Acquisition [Line Items]
Number of sand and gravel pits acquired | item						1
Sierra Ready Mix, LLC | Summit Materials, LLC | West | Ready-mixed concrete | Cement plant
Business Acquisition [Line Items]
Number of plants acquired						2
APAC Kansas Inc | East | Aggregates
Business Acquisition [Line Items]
Number of quarries | item					7
APAC Kansas Inc | Summit Materials, LLC | East | Aggregates
Business Acquisition [Line Items]
Number of quarries | item					7
Boxley | East | Aggregates
Business Acquisition [Line Items]
Number of quarries | item							6
Boxley | East | Ready-mixed concrete | Cement plant
Business Acquisition [Line Items]
Number of plants acquired							4
Boxley | East | Asphalt
Business Acquisition [Line Items]
Number of plants acquired							4
Boxley | Summit Materials, LLC | East | Aggregates
Business Acquisition [Line Items]
Number of quarries | item							6
Boxley | Summit Materials, LLC | East | Ready-mixed concrete | Cement plant
Business Acquisition [Line Items]
Number of plants acquired							4
Boxley | Summit Materials, LLC | East | Asphalt
Business Acquisition [Line Items]
Number of plants acquired							4
AMC | East | Aggregates
Business Acquisition [Line Items]
Number of sand and gravel pits acquired | item								5
AMC | Summit Materials, LLC | East | Aggregates
Business Acquisition [Line Items]
Number of sand and gravel pits acquired | item								5

Acquisitions - Summary of Asset

Acquisitions - Summary of Assets Acquired and Liabilities Assumed (Detail) $ in Thousands	Jan. 10, 2017USD ($)	Aug. 30, 2016facility	Apr. 01, 2017USD ($)facility	Apr. 02, 2016USD ($)	Dec. 31, 2016USD ($)
Business Acquisition [Line Items]
Net gain on asset disposals			$ 1,665	$ 1,683
Goodwill			$ 848,034		$ 782,212
Cement plant
Business Acquisition [Line Items]
Number of Plants Owned and Operated | facility			2
Follow on Public Offering
Business Acquisition [Line Items]
Cash paid for acquisitions	$ 110,000
Cement
Business Acquisition [Line Items]
Goodwill			$ 204,656		204,538
Summit Materials, LLC
Business Acquisition [Line Items]
Net gain on asset disposals			1,665	$ 1,683
Goodwill			848,034		782,212
Summit Materials, LLC | Cement
Business Acquisition [Line Items]
Goodwill			204,656		204,538
2016 Acquisitions
Business Acquisition [Line Items]
Financial assets					22,204
Inventories					17,215
Property, plant and equipment					180,321
Intangible assets					5,531
Other assets					6,757
Financial liabilities					(20,248)
Other long-term liabilities					(36,074)
Net assets acquired					175,706
Goodwill					176,319
Purchase price					352,025
Acquisition related liabilities					(17,034)
Other					1,967
Net cash paid for acquisitions					336,958
Amount reclassified from financial assets to liabilities			1,200
2016 Acquisitions | Summit Materials, LLC
Business Acquisition [Line Items]
Financial assets					22,204
Inventories					17,215
Property, plant and equipment					180,321
Intangible assets					5,531
Other assets					6,757
Financial liabilities					(20,248)
Other long-term liabilities					(36,074)
Net assets acquired					175,706
Goodwill					176,319
Purchase price					352,025
Acquisition related liabilities					(17,034)
Other					1,967
Net cash paid for acquisitions					$ 336,958
Amount reclassified from financial assets to liabilities			1,200
2017 Acquisitions
Business Acquisition [Line Items]
Financial assets			6,856
Inventories			4,603
Property, plant and equipment			51,253
Intangible assets			13
Other assets			1,174
Financial liabilities			(5,147)
Other long-term liabilities			(1,592)
Net assets acquired			57,160
Goodwill			64,993
Purchase price			122,153
Acquisition related liabilities			(9,820)
Net cash paid for acquisitions			112,333
2017 Acquisitions | Summit Materials, LLC
Business Acquisition [Line Items]
Financial assets			6,856
Inventories			4,603
Property, plant and equipment			51,253
Intangible assets			13
Other assets			1,174
Financial liabilities			(5,147)
Other long-term liabilities			(1,592)
Net assets acquired			57,160
Goodwill			64,993
Purchase price			122,153
Acquisition related liabilities			(9,820)
Net cash paid for acquisitions			$ 112,333
Angelle Assets | Cement | Cement terminal
Business Acquisition [Line Items]
Number of plants acquired | facility		2
Angelle Assets | Summit Materials, LLC | Cement | Cement terminal
Business Acquisition [Line Items]
Number of plants acquired | facility		2

Acquisitions - Summary of Goodw

Acquisitions - Summary of Goodwill by Reportable Segments (Details) $ in Thousands	3 Months Ended
	Apr. 01, 2017USD ($)
Goodwill [Roll Forward]
Beginning balance	$ 782,212
Acquisitions	65,395
Foreign currency translation adjustments	427
Ending balance	848,034
Accumulated impairment losses	(68,202)
Summit Materials, LLC
Goodwill [Roll Forward]
Beginning balance	782,212
Acquisitions	65,395
Foreign currency translation adjustments	427
Ending balance	848,034
Accumulated impairment losses	(68,202)
West
Goodwill [Roll Forward]
Beginning balance	334,257
Acquisitions	57,042
Foreign currency translation adjustments	427
Ending balance	391,726
Accumulated impairment losses	(53,264)
West | Summit Materials, LLC
Goodwill [Roll Forward]
Beginning balance	334,257
Acquisitions	57,042
Foreign currency translation adjustments	427
Ending balance	391,726
Accumulated impairment losses	(53,264)
East
Goodwill [Roll Forward]
Beginning balance	243,417
Acquisitions	8,235
Ending balance	251,652
Accumulated impairment losses	(14,938)
East | Summit Materials, LLC
Goodwill [Roll Forward]
Beginning balance	243,417
Acquisitions	8,235
Ending balance	251,652
Accumulated impairment losses	(14,938)
Cement
Goodwill [Roll Forward]
Beginning balance	204,538
Acquisitions	118
Ending balance	204,656
Cement | Summit Materials, LLC
Goodwill [Roll Forward]
Beginning balance	204,538
Acquisitions	118
Ending balance	$ 204,656

Acquisitions - Intangible Asset

Acquisitions - Intangible Assets By Type (Details) - USD ($) $ in Thousands	Apr. 01, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 23,385	$ 25,843
Accumulated Amortization	(5,700)	(7,854)
Net Carrying Amount	17,685	17,989
Summit Materials, LLC
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	23,385	25,843
Accumulated Amortization	(5,700)	(7,854)
Net Carrying Amount	17,685	17,989
Leases
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	15,902	15,888
Accumulated Amortization	(3,547)	(3,382)
Net Carrying Amount	12,355	12,506
Leases | Summit Materials, LLC
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	15,902	15,888
Accumulated Amortization	(3,547)	(3,382)
Net Carrying Amount	12,355	12,506
Reserve Rights
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	6,234	8,706
Accumulated Amortization	(1,358)	(3,710)
Net Carrying Amount	4,876	4,996
Reserve Rights | Summit Materials, LLC
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	6,234	8,706
Accumulated Amortization	(1,358)	(3,710)
Net Carrying Amount	4,876	4,996
Trade Names
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,000	1,000
Accumulated Amortization	(683)	(658)
Net Carrying Amount	317	342
Trade Names | Summit Materials, LLC
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,000	1,000
Accumulated Amortization	(683)	(658)
Net Carrying Amount	317	342
Other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	249	249
Accumulated Amortization	(112)	(104)
Net Carrying Amount	137	145
Other | Summit Materials, LLC
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	249	249
Accumulated Amortization	(112)	(104)
Net Carrying Amount	$ 137	$ 145

Acquisitions - Amortization Exp

Acquisitions - Amortization Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 01, 2017	Apr. 02, 2016	Jul. 02, 2016	Dec. 31, 2016
Estimated amortization expense
2017 (nine months)	$ 949
2,018	1,279
2,019	1,260
2,020	1,177
2,021	1,135
2,022	1,135
Thereafter	10,750
Total	17,685			$ 17,989
Amortization expense	300	$ 400
Summit Materials, LLC
Estimated amortization expense
2017 (nine months)	949
2,018	1,279
2,019	1,260
2,020	1,177
2,021	1,135
2,022	1,135
Thereafter	10,750
Total	17,685			$ 17,989
Amortization expense	$ 300	$ 400	$ 400

Accounts Receivable, Net - Summ

Accounts Receivable, Net - Summary of Accounts Receivable, Net (Details) - USD ($) $ in Thousands	Apr. 01, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Trade accounts receivable	$ 147,501	$ 152,845
Retention receivables	10,136	12,117
Receivables from related parties	355	721
Accounts receivable	157,992	165,683
Less: Allowance for doubtful accounts	(3,148)	(3,306)
Accounts receivable, net	154,844	162,377
Summit Materials, LLC
Accounts, Notes, Loans and Financing Receivable [Line Items]
Trade accounts receivable	147,501	152,845
Retention receivables	10,136	12,117
Receivables from related parties	355	721
Accounts receivable	157,992	165,683
Less: Allowance for doubtful accounts	(3,148)	(3,306)
Accounts receivable, net	$ 154,844	$ 162,377

Inventories - Components of Inv

Inventories - Components of Inventories (Details) - USD ($) $ in Thousands	Apr. 01, 2017	Dec. 31, 2016
Inventories
Aggregate stockpiles	$ 114,226	$ 103,073
Finished goods	47,968	35,071
Work in process	5,409	6,440
Raw materials	19,395	13,095
Total	186,998	157,679
Summit Materials, LLC
Inventories
Aggregate stockpiles	114,226	103,073
Finished goods	47,968	35,071
Work in process	5,409	6,440
Raw materials	19,395	13,095
Total	$ 186,998	$ 157,679

Accrued Expenses - Components o

Accrued Expenses - Components of Accrued Expenses (Details) - USD ($) $ in Thousands	Apr. 01, 2017	Dec. 31, 2016
Schedule Of Accrued Expenses [Line Items]
Interest	$ 18,341	$ 22,991
Payroll and benefits	18,217	30,546
Capital lease obligations	17,396	11,766
Insurance	11,047	11,966
Non-income taxes	7,714	5,491
Professional fees	2,244	2,459
Other	25,761	26,386
Total	100,720	111,605
Summit Materials, LLC
Schedule Of Accrued Expenses [Line Items]
Interest	18,341	22,991
Payroll and benefits	18,217	30,546
Capital lease obligations	17,396	11,766
Insurance	11,047	11,966
Non-income taxes	7,714	5,491
Professional fees	2,244	2,459
Other	25,761	25,254
Total	$ 100,720	$ 110,473

Debt - Schedule of Debt (Detail

Debt - Schedule of Debt (Details) - USD ($) $ in Thousands	Apr. 01, 2017	Jan. 19, 2017	Dec. 31, 2016
Debt
Total debt	$ 1,534,654		$ 1,536,065
Current portion of long-term debt	6,500		6,500
Long-term debt	1,528,154		1,529,565
Gross amount	1,538,625
Debt discount	3,971
Summit Materials, LLC
Debt
Total debt	1,534,654		1,536,065
Current portion of long-term debt	6,500		6,500
Long-term debt	1,528,154		1,529,565
Gross amount	1,538,625
Debt discount	3,971
Term Loan, due 2022
Debt
Total debt	636,186		637,658
Gross amount	638,600	$ 640,300	640,300
Debt discount	2,400		2,600
Term Loan, due 2022 | Summit Materials, LLC
Debt
Total debt	636,186		637,658
Gross amount	638,600		640,300
Debt discount	2,400		2,600
8 1/2% Senior Notes, due 2022
Debt
Total debt	$ 250,000		$ 250,000
Debt instrument interest rate (as a percent)	8.50%		8.50%
8 1/2% Senior Notes, due 2022 | Summit Materials, LLC
Debt
Total debt	$ 250,000		$ 250,000
Debt instrument interest rate (as a percent)	8.50%		8.50%
6 1/8% Senior Notes, due 2023
Debt
Total debt	$ 648,468		$ 648,407
Gross amount	650,000		650,000
Debt discount	$ 1,500		$ 1,600
Debt instrument interest rate (as a percent)	6.125%		6.125%
6 1/8% Senior Notes, due 2023 | Summit Materials, LLC
Debt
Total debt	$ 648,468		$ 648,407
Gross amount	650,000		650,000
Debt discount	$ 1,500		$ 1,600
Debt instrument interest rate (as a percent)	6.125%		6.125%

Debt - Schedule of Contractual

Debt - Schedule of Contractual Payments of Long-Term Debt (Details) $ in Thousands	Apr. 01, 2017USD ($)
Contractual payments of long-term debt
2017 (nine months)	$ 4,875
2,018	4,875
2,019	6,500
2,020	8,125
2,021	6,500
2,022	857,750
Thereafter	650,000
Total	1,538,625
Less: Original issue net discount	(3,971)
Less: Capitalized loan costs	(15,097)
Total debt	1,519,557
Summit Materials, LLC
Contractual payments of long-term debt
2017 (nine months)	4,875
2,018	4,875
2,019	6,500
2,020	8,125
2,021	6,500
2,022	857,750
Thereafter	650,000
Total	1,538,625
Less: Original issue net discount	(3,971)
Less: Capitalized loan costs	(15,097)
Total debt	$ 1,519,557

Debt - Senior Notes - Additiona

Debt - Senior Notes - Additional Information (Details) - USD ($) $ in Thousands	Mar. 08, 2016	Apr. 01, 2017	Jan. 02, 2016	Dec. 31, 2016
Debt
Write off of deferred financing fees		$ 45
8 1/2% Senior Notes, due 2022
Debt
Senior notes, interest rate (as a percent)		8.50%		8.50%
6 1/8% Senior Notes, due 2023
Debt
Senior notes, interest rate (as a percent)		6.125%		6.125%
Issuers | 8 1/2% Senior Notes, due 2022
Debt
Debt instrument, face amount	$ 250,000
Senior notes, interest rate (as a percent)	8.50%
Percentage of par value of senior notes	100.00%
Proceeds net of related fees and expenses	$ 246,300
Issuers | 6 1/8% Senior Notes, due 2023
Debt
Debt instrument, face amount			$ 650,000
Senior notes, interest rate (as a percent)			6.125%
Issuers | 6 1/8% Senior Notes, due 2023, issued at par
Debt
Debt instrument, face amount			$ 350,000
Issuers | 6 1/8% Senior Notes, due 2023, , issued at 99.375% of par
Debt
Debt instrument, face amount			$ 300,000
Percentage of par value of senior notes			99.375%
Summit Materials, LLC
Debt
Write off of deferred financing fees		$ 45
Summit Materials, LLC | 8 1/2% Senior Notes, due 2022
Debt
Senior notes, interest rate (as a percent)		8.50%		8.50%
Summit Materials, LLC | 6 1/8% Senior Notes, due 2023
Debt
Senior notes, interest rate (as a percent)		6.125%		6.125%

Debt - Senior Secured Credit Fa

Debt - Senior Secured Credit Facilities - Additional Information (Details) - USD ($) $ in Thousands	Jan. 19, 2017	Apr. 01, 2017	Apr. 02, 2016	Dec. 31, 2016
Debt
Outstanding principal amount		$ 1,538,625
Financing fees recognized		917	$ 729
Interest expense		21,600	18,300
Term Loan, due 2022
Debt
Outstanding principal amount	$ 640,300	638,600		$ 640,300
Prepayment penalty (as a percent)	1.00%
Term for determining prepayment penalty	6 months
Summit Materials, LLC
Debt
Outstanding principal amount		1,538,625
Financing fees recognized		917	729
Interest expense		$ 21,600	$ 18,300
Summit Materials, LLC | Senior Secured Credit Facilities
Debt
First lien leverage ratio		4.75
Summit Materials, LLC | Term Loan, due 2022
Debt
Debt instrument, face amount		$ 650,000
Outstanding principal amount		$ 638,600		640,300
Quarterly principal repayments percentage		0.25%
Summit Materials, LLC | Revolving Credit Facility
Debt
Maximum borrowing capacity		$ 235,000
Amount outstanding		0		$ 0
Remaining borrowing capacity		$ 215,400
Summit Materials, LLC | Revolving Credit Facility | LIBOR
Debt
Basis spread on variable rate		3.25%
Summit Materials, LLC | Revolving Credit Facility | LIBOR Plus 1%
Debt
Basis spread on variable rate		2.25%
Percentage added to base rate		1.00%
Summit Materials, LLC | Revolving Credit Facility | Federal funds rate
Debt
Basis spread on variable rate		0.50%
Summit Materials, LLC | Letter of Credit
Debt
Amount outstanding		$ 19,600

Debt - Summary of Activity for

Debt - Summary of Activity for Deferred Financing Fees (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 01, 2017	Apr. 02, 2016
Deferred finance costs
Beginning balance	$ 18,290	$ 15,892
Loan origination fees	699	5,001
Amortization	(917)	(729)
Write off of deferred financing fees	(45)
Ending balance	18,027	20,164
Summit Materials, LLC
Deferred finance costs
Beginning balance	18,290	15,892
Loan origination fees	699	5,001
Amortization	(917)	(729)
Write off of deferred financing fees	(45)
Ending balance	$ 18,027	$ 20,164

Debt - Other - Additional Infor

Debt - Other - Additional Information (Details) - CAD CAD in Millions	Jan. 15, 2015	Apr. 01, 2017	Dec. 31, 2016
Canadian subsidiary credit agreement
Debt
Amount outstanding		CAD 0	CAD 0
Canadian subsidiary credit agreement | Summit Materials, LLC
Debt
Amount outstanding		CAD 0	CAD 0
Canadian subsidiary credit agreement, Operating activities
Debt
Revolving credit commitment	CAD 6
Canadian subsidiary credit agreement, Operating activities | Summit Materials, LLC
Debt
Revolving credit commitment	6
Canadian subsidiary credit agreement, Capital equipment
Debt
Revolving credit commitment	CAD 0.5
Basis spread on variable rate	0.90%
Canadian subsidiary credit agreement, Capital equipment | Summit Materials, LLC
Debt
Revolving credit commitment	CAD 0.5
Basis spread on variable rate	0.90%
Canadian subsidiary credit agreement, Guarantees
Debt
Revolving credit commitment	CAD 0.4
Canadian subsidiary credit agreement, Guarantees | Summit Materials, LLC
Debt
Revolving credit commitment	CAD 0.4
Prime rate | Canadian subsidiary credit agreement, Operating activities
Debt
Basis spread on variable rate	0.20%
Prime rate | Canadian subsidiary credit agreement, Operating activities | Summit Materials, LLC
Debt
Basis spread on variable rate	0.20%

Accumulated Other Comprehensi53

Accumulated Other Comprehensive Income (Loss) - Summary of Changes in Each Component of Accumulated Comprehensive Income Loss (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 01, 2017	Apr. 02, 2016
Changes in each component of accumulated other comprehensive loss
Beginning balance	$ 842,044
Ending balance	1,034,619
Accumulated Other Comprehensive Operations
Changes in each component of accumulated other comprehensive loss
Beginning balance	(2,249)	$ (2,795)
Foreign currency translation adjustment	670	2,309
Income (loss) on cash flow hedges	393	(1,111)
Ending balance	(1,186)	(1,597)
Change in retirement plans
Changes in each component of accumulated other comprehensive loss
Beginning balance	1,450	1,049
Ending balance	1,450	1,049
Foreign currency translation adjustment
Changes in each component of accumulated other comprehensive loss
Beginning balance	(3,106)	(3,379)
Foreign currency translation adjustment	670	2,309
Ending balance	(2,436)	(1,070)
Cash flow hedge adjustments
Changes in each component of accumulated other comprehensive loss
Beginning balance	(593)	(465)
Income (loss) on cash flow hedges	393	(1,111)
Ending balance	(200)	(1,576)
Summit Materials, LLC | Accumulated Other Comprehensive Operations
Changes in each component of accumulated other comprehensive loss
Beginning balance	(27,444)	(28,466)
Foreign currency translation adjustment	706	4,642
Income (loss) on cash flow hedges	412	(2,234)
Ending balance	(26,326)	(26,058)
Summit Materials, LLC | Change in retirement plans
Changes in each component of accumulated other comprehensive loss
Beginning balance	(7,181)	(7,607)
Ending balance	(7,181)	(7,607)
Summit Materials, LLC | Foreign currency translation adjustment
Changes in each component of accumulated other comprehensive loss
Beginning balance	(17,790)	(19,915)
Foreign currency translation adjustment	706	4,642
Ending balance	(17,084)	(15,273)
Summit Materials, LLC | Cash flow hedge adjustments
Changes in each component of accumulated other comprehensive loss
Beginning balance	(2,473)	(944)
Income (loss) on cash flow hedges	412	(2,234)
Ending balance	$ (2,061)	$ (3,178)

Income Taxes - Deferred Tax Ass

Income Taxes - Deferred Tax Assets and Tax Receivable Agreement (Details) - USD ($)	3 Months Ended
	Apr. 01, 2017	Apr. 02, 2016	Dec. 31, 2016
Income Taxes
Income tax benefit	$ (2,178,000)	$ (8,166,000)
Number of Summit LP units purchased by Company, newly issued units (in shares)	236,095
Deferred tax asset, Investment in limited partnership	$ 2,700,000
Distributions to LP Unitholders	79,000	0
Valuation Allowance
Valuation allowance	(517,200,000)		$ (502,800,000)
Tax Receivable Agreement
Income Taxes
Income tax benefit	0
Summit Materials, LLC
Income Taxes
Income tax benefit	$ (2,178,000)	$ (8,149,000)
Summit Holdings LP | Tax Receivable Agreement
Income Taxes
Percentage of benefits to be paid on tax receivable agreement	85.00%

Net Income Per Share - Schedule

Net Income Per Share - Schedule of Basic to Diluted Income Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Apr. 01, 2017	Apr. 02, 2016
Reconciliation of basic to diluted loss per share
Net income (loss) attributable to Summit Inc.	$ (52,444)	$ (21,118)
Number of Summit LP units purchased by Company, newly issued units (in shares)	236,095
LP Units
Reconciliation of basic to diluted loss per share
Anti dilutive shares excluded from calculation of earnings per share	4,915,202	50,261,471
Time Vesting Restricted Stock Units
Reconciliation of basic to diluted loss per share
Anti dilutive shares excluded from calculation of earnings per share	527,393	336,657
Market Based Restricted Stock Units
Reconciliation of basic to diluted loss per share
Anti dilutive shares excluded from calculation of earnings per share	211,455	130,691
Stock options
Reconciliation of basic to diluted loss per share
Anti dilutive shares excluded from calculation of earnings per share	5,311,863	2,767,458
Warrants
Reconciliation of basic to diluted loss per share
Anti dilutive shares excluded from calculation of earnings per share	160,333	160,333
Common Class A
Reconciliation of basic to diluted loss per share
Weighted average shares of Class A common stock outstanding	105,171,661	50,882,663
Basic income (loss) per share	$ (0.50)	$ (0.42)
Weighted average dilutive shares outstanding	105,171,661	50,882,663
Diluted earnings per share	$ (0.50)	$ (0.42)
Summit Materials, LLC
Reconciliation of basic to diluted loss per share
Net income (loss) attributable to Summit Inc.	$ (54,756)	$ (42,164)

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Apr. 01, 2017	Dec. 29, 2012	Dec. 31, 2011	Dec. 31, 2016
Contingencies
Term of purchase commitments	1 year
Assumption of Obligations Under Indemnification Agreement
Contingencies
Amount funded for loss incurred by joint venture	$ 8.8	$ 4	$ 4.8
Recognized losses on indemnification agreement		8	1.9
Assumption of Obligations Under Indemnification Agreement | Other noncurrent liabilities
Contingencies
Accrual recorded in other noncurrent liabilities	4.3			$ 4.3
Site Restoration Obligations
Contingencies
Anticipated costs	67.6			63.6
Site Restoration Obligations | Other noncurrent liabilities
Contingencies
Site restoration obligation, non-current	20.4			18.8
Site Restoration Obligations | Accrued expenses.
Contingencies
Asset retirement obligation, current	$ 5.9			5.1
Summit Materials, LLC
Contingencies
Term of purchase commitments	1 year
Summit Materials, LLC | Assumption of Obligations Under Indemnification Agreement
Contingencies
Amount funded for loss incurred by joint venture	$ 8.8	4	4.8
Recognized losses on indemnification agreement		$ 8	$ 1.9
Summit Materials, LLC | Assumption of Obligations Under Indemnification Agreement | Other noncurrent liabilities
Contingencies
Accrual recorded in other noncurrent liabilities	4.3			4.3
Summit Materials, LLC | Site Restoration Obligations
Contingencies
Anticipated costs	67.6			63.6
Summit Materials, LLC | Site Restoration Obligations | Other noncurrent liabilities
Contingencies
Site restoration obligation, non-current	20.4			18.8
Summit Materials, LLC | Site Restoration Obligations | Accrued expenses.
Contingencies
Asset retirement obligation, current	$ 5.9			$ 5.1

Supplemental Cash Flow Inform57

Supplemental Cash Flow Information - Schedule of Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 01, 2017	Apr. 02, 2016
Cash payments:
Interest	$ 26,727	$ 28,129
Income taxes	230	269
Non cash financing activities:
Exchange of LP units to Common A Stock	5,753
Summit Materials, LLC
Cash payments:
Interest	26,727	28,129
Income taxes	$ 230	$ 269

Segment Information - Financial

Segment Information - Financial Data (Details) $ in Thousands	3 Months Ended
	Apr. 01, 2017USD ($)segment	Apr. 02, 2016USD ($)	Dec. 31, 2016USD ($)
Segment Information
Number of operating segments | segment	3
Total revenue	$ 284,277	$ 228,379
Adjusted EBITDA	13,630	8,409
Interest expense	24,969	21,577
Depreciation, depletion and amortization	39,304	31,900
Accretion	444	460
Loss on debt financings	190
Transaction costs	1,273	3,316
Non-cash compensation	4,748	2,036
Other	(12)	(180)
Loss from operations before taxes	(57,286)	(50,700)
Total capital expenditures	51,056	39,125
Total depreciation, depletion, amortization and accretion	39,748	32,360
Total assets	$ 2,971,863		$ 2,781,466
Summit Materials, LLC
Segment Information
Number of operating segments | segment	3
Total revenue	$ 284,277	228,379
Adjusted EBITDA	13,630	8,426
Interest expense	24,715	21,286
Depreciation, depletion and amortization	39,304	31,900
Accretion	444	460
Loss on debt financings	190
Transaction costs	1,273	3,316
Non-cash compensation	4,748	2,036
Other	(12)	(180)
Loss from operations before taxes	(57,032)	(50,392)
Total capital expenditures	51,056	39,125
Total depreciation, depletion, amortization and accretion	39,748	32,360
Total assets	2,965,194		2,776,420
West
Segment Information
Total revenue	143,219	123,717
West | Summit Materials, LLC
Segment Information
Total revenue	143,219	123,717
East
Segment Information
Total revenue	97,223	70,674
East | Summit Materials, LLC
Segment Information
Total revenue	97,223	70,674
Cement
Segment Information
Total revenue	43,835	33,988
Cement | Summit Materials, LLC
Segment Information
Total revenue	43,835	33,988
Operating segment
Segment Information
Total capital expenditures	49,941	38,531
Total depreciation, depletion, amortization and accretion	39,089	31,726
Total assets	2,815,927		2,641,816
Operating segment | Summit Materials, LLC
Segment Information
Total capital expenditures	49,941	38,531
Total depreciation, depletion, amortization and accretion	39,089	31,726
Total assets	2,815,927		2,641,816
Operating segment | West
Segment Information
Adjusted EBITDA	15,699	13,279
Total capital expenditures	26,562	23,252
Total depreciation, depletion, amortization and accretion	15,663	16,036
Total assets	1,015,778		902,763
Operating segment | West | Summit Materials, LLC
Segment Information
Adjusted EBITDA	15,699	13,279
Total capital expenditures	26,562	23,252
Total depreciation, depletion, amortization and accretion	15,663	16,036
Total assets	1,015,778		902,763
Operating segment | East
Segment Information
Adjusted EBITDA	4,348	3,173
Total capital expenditures	15,706	11,050
Total depreciation, depletion, amortization and accretion	15,378	10,431
Total assets	921,578		870,613
Operating segment | East | Summit Materials, LLC
Segment Information
Adjusted EBITDA	4,348	3,173
Total capital expenditures	15,706	11,050
Total depreciation, depletion, amortization and accretion	15,378	10,431
Total assets	921,578		870,613
Operating segment | Cement
Segment Information
Adjusted EBITDA	2,685	971
Total capital expenditures	7,673	4,229
Total depreciation, depletion, amortization and accretion	8,048	5,259
Total assets	878,571		868,440
Operating segment | Cement | Summit Materials, LLC
Segment Information
Adjusted EBITDA	2,685	971
Total capital expenditures	7,673	4,229
Total depreciation, depletion, amortization and accretion	8,048	5,259
Total assets	878,571		868,440
Corporate and other
Segment Information
Adjusted EBITDA	(9,102)	(9,014)
Total capital expenditures	1,115	594
Total depreciation, depletion, amortization and accretion	659	634
Total assets	155,936		139,650
Corporate and other | Summit Materials, LLC
Segment Information
Adjusted EBITDA	(9,102)	(8,997)
Total capital expenditures	1,115	594
Total depreciation, depletion, amortization and accretion	659	634
Total assets	149,267		$ 134,604
Aggregates
Segment Information
Total revenue	61,622	49,908
Aggregates | Summit Materials, LLC
Segment Information
Total revenue	61,622	49,908
Cement
Segment Information
Total revenue	39,435	28,536
Cement | Summit Materials, LLC
Segment Information
Total revenue	39,435	28,536
Ready-mixed concrete
Segment Information
Total revenue	93,177	80,166
Ready-mixed concrete | Summit Materials, LLC
Segment Information
Total revenue	93,177	80,166
Asphalt
Segment Information
Total revenue	19,537	12,656
Asphalt | Summit Materials, LLC
Segment Information
Total revenue	19,537	12,656
Paving and related services
Segment Information
Total revenue	36,296	27,148
Paving and related services | Summit Materials, LLC
Segment Information
Total revenue	36,296	27,148
Other
Segment Information
Total revenue	34,210	29,965
Other | Summit Materials, LLC
Segment Information
Total revenue	$ 34,210	$ 29,965

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Details) - Blackstone Advisory Partners LP - Term Loan, due 2022 $ in Millions	Mar. 31, 2016USD ($)
Summit Materials, LLC
Related Party Transactions
Notes issued to related party	$ 18.8
Issuance of notes
Related Party Transactions
Notes issued to related party	$ 18.8

Guarantor and Non-Guarantor Fin

Guarantor and Non-Guarantor Financial Information - Schedule of Condensed Consolidating Balance Sheets (Details) - USD ($) $ in Thousands	Apr. 01, 2017	Dec. 31, 2016	Apr. 02, 2016	Jan. 02, 2016
Current assets:
Cash and cash equivalents	$ 156,107	$ 143,392	$ 92,244	$ 186,405
Accounts receivable, net	154,844	162,377
Cost and estimated earnings in excess of billings	14,926	7,450
Inventories	186,998	157,679
Other current assets	12,038	12,800
Total current assets	524,913	483,698
Property, plant and equipment, net	1,528,259	1,446,452
Goodwill	848,034	782,212
Intangible assets, net	17,685	17,989
Other assets	52,972	51,115
Total assets	2,971,863	2,781,466
Current liabilities:
Current portion of debt	6,500	6,500
Current portion of acquisition-related liabilities	17,852	24,162
Accounts payable	105,390	81,565
Accrued expenses	100,720	111,605
Billings in excess of costs and estimated earnings	12,860	15,456
Total current liabilities	243,322	239,288
Long-term debt	1,513,057	1,514,456
Acquisition-related liabilities	33,715	32,664
Other noncurrent liabilities	134,049	135,019
Total liabilities	1,924,143	1,921,427
Total liabilities and stockholders' equity / member's interest	2,971,863	2,781,466
Summit Materials, LLC
Current assets:
Cash and cash equivalents	156,107	142,672	91,227	185,388
Accounts receivable, net	154,844	162,377
Cost and estimated earnings in excess of billings	14,926	7,450
Inventories	186,998	157,679
Other current assets	12,038	12,800
Total current assets	524,913	482,978
Property, plant and equipment, net	1,528,259	1,446,452
Goodwill	848,034	782,212
Intangible assets, net	17,685	17,989
Other assets	46,303	46,789
Total assets	2,965,194	2,776,420
Current liabilities:
Current portion of debt	6,500	6,500
Current portion of acquisition-related liabilities	15,352	21,663
Accounts payable	104,782	81,610
Accrued expenses	100,720	110,473
Billings in excess of costs and estimated earnings	12,860	15,456
Total current liabilities	240,214	235,702
Long-term debt	1,513,057	1,514,456
Acquisition-related liabilities	28,459	25,161
Other noncurrent liabilities	121,379	124,708
Total liabilities	1,903,109	1,900,027
Total member's interest	1,062,085	876,393
Total liabilities and stockholders' equity / member's interest	2,965,194	2,776,420
Summit Materials, LLC | Eliminations
Current assets:
Cash and cash equivalents	(19,224)	(10,666)	(10,363)	(11,600)
Accounts receivable, net	(101)	(102)
Intercompany receivables	(878,079)	(843,434)
Total current assets	(897,404)	(854,202)
Other assets	(3,337,490)	(3,283,133)
Total assets	(4,234,894)	(4,137,335)
Current liabilities:
Accounts payable	(101)	(102)
Accrued expenses	(19,224)	(10,666)
Intercompany payables	(878,079)	(843,434)
Total current liabilities	(897,404)	(854,202)
Other noncurrent liabilities	(165,241)	(165,242)
Total liabilities	(1,062,645)	(1,019,444)
Total member's interest	(3,172,249)	(3,117,891)
Total liabilities and stockholders' equity / member's interest	(4,234,894)	(4,137,335)
Summit Materials, LLC | Issuers
Current assets:
Cash and cash equivalents	155,887	133,862	91,501	180,712
Intercompany receivables	609,926	521,658
Other current assets	2,027	1,259
Total current assets	767,840	656,779
Property, plant and equipment, net	7,390	7,033
Other assets	3,256,860	3,202,706
Total assets	4,032,090	3,866,518
Current liabilities:
Current portion of debt	6,500	6,500
Current portion of acquisition-related liabilities		1,000
Accounts payable	326	1,497
Accrued expenses	37,814	46,460
Intercompany payables	505,756	509,503
Total current liabilities	550,396	564,960
Long-term debt	1,513,057	1,514,456
Other noncurrent liabilities	2,904	2,395
Total liabilities	2,066,357	2,081,811
Total member's interest	1,965,733	1,784,707
Total liabilities and stockholders' equity / member's interest	4,032,090	3,866,518
Summit Materials, LLC | Guarantors
Current assets:
Cash and cash equivalents	3,023	4,820	1,580	4,068
Accounts receivable, net	148,591	155,389
Intercompany receivables	268,153	321,776
Cost and estimated earnings in excess of billings	14,243	6,830
Inventories	181,604	153,374
Other current assets	9,052	11,012
Total current assets	624,666	653,201
Property, plant and equipment, net	1,500,769	1,418,902
Goodwill	800,885	735,490
Intangible assets, net	17,685	17,989
Other assets	124,988	125,270
Total assets	3,068,993	2,950,852
Current liabilities:
Current portion of acquisition-related liabilities	15,352	20,663
Accounts payable	99,573	76,886
Accrued expenses	81,209	73,807
Intercompany payables	365,109	327,405
Billings in excess of costs and estimated earnings	12,659	15,242
Total current liabilities	573,902	514,003
Acquisition-related liabilities	28,459	25,161
Other noncurrent liabilities	227,348	231,199
Total liabilities	829,709	770,363
Total member's interest	2,239,284	2,180,489
Total liabilities and stockholders' equity / member's interest	3,068,993	2,950,852
Summit Materials, LLC | Non Guarantors
Current assets:
Cash and cash equivalents	16,421	14,656	$ 8,509	$ 12,208
Accounts receivable, net	6,354	7,090
Cost and estimated earnings in excess of billings	683	620
Inventories	5,394	4,305
Other current assets	959	529
Total current assets	29,811	27,200
Property, plant and equipment, net	20,100	20,517
Goodwill	47,149	46,722
Other assets	1,945	1,946
Total assets	99,005	96,385
Current liabilities:
Accounts payable	4,984	3,329
Accrued expenses	921	872
Intercompany payables	7,214	6,526
Billings in excess of costs and estimated earnings	201	214
Total current liabilities	13,320	10,941
Other noncurrent liabilities	56,368	56,356
Total liabilities	69,688	67,297
Total member's interest	29,317	29,088
Total liabilities and stockholders' equity / member's interest	$ 99,005	$ 96,385

Guarantor and Non-Guarantor F61

Guarantor and Non-Guarantor Financial Information - Schedule of Condensed Consolidating Statements of Operations and Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 01, 2017	Apr. 02, 2016
Condensed Consolidating Statements of Operations
Revenue	$ 284,277	$ 228,379
Cost of revenue (excluding items shown separately below)	217,572	176,790
Depreciation, depletion, amortization and accretion	39,748	32,360
Operating loss	(32,784)	(29,457)
Other (income) loss, net	(657)	(334)
Interest expense	24,969	21,577
Loss from operations before taxes	(57,286)	(50,700)
Income tax (benefit) expense	(2,178)	(8,166)
Net income (loss)	(55,108)	(42,534)
Net income (loss) attributable to member of Summit Materials, LLC	(52,444)	(21,118)
Comprehensive (loss) income attributable to member of Summit Materials, LLC	(51,381)	(19,920)
Summit Materials, LLC
Condensed Consolidating Statements of Operations
Revenue	284,277	228,379
Cost of revenue (excluding items shown separately below)	217,572	176,790
General and administrative expenses	59,741	48,686
Depreciation, depletion, amortization and accretion	39,748	32,360
Operating loss	(32,784)	(29,457)
Other (income) loss, net	(467)	(351)
Other (income) loss, net	(657)	(351)
Interest expense	24,715	21,286
Loss from operations before taxes	(57,032)	(50,392)
Income tax (benefit) expense	(2,178)	(8,149)
Net income (loss)	(54,854)	(42,243)
Net loss attributable to noncontrolling interest	(98)	(79)
Net income (loss) attributable to member of Summit Materials, LLC	(54,756)	(42,164)
Comprehensive (loss) income attributable to member of Summit Materials, LLC	(53,638)	(39,756)
Summit Materials, LLC | Eliminations
Condensed Consolidating Statements of Operations
Revenue	(1,508)	(1,964)
Cost of revenue (excluding items shown separately below)	(1,508)	(1,964)
Other (income) loss, net	(16,077)	(12,748)
Loss from operations before taxes	16,077	12,748
Net income (loss)	16,077	12,748
Net loss attributable to noncontrolling interest	(98)	(79)
Net income (loss) attributable to member of Summit Materials, LLC	16,175	12,827
Comprehensive (loss) income attributable to member of Summit Materials, LLC	17,293	10,419
Summit Materials, LLC | Issuers
Condensed Consolidating Statements of Operations
General and administrative expenses	15,050	14,183
Depreciation, depletion, amortization and accretion	658	634
Operating loss	(15,708)	(14,817)
Other (income) loss, net	15,410	12,249
Interest expense	23,638	15,098
Loss from operations before taxes	(54,756)	(42,164)
Net income (loss)	(54,756)	(42,164)
Net income (loss) attributable to member of Summit Materials, LLC	(54,756)	(42,164)
Comprehensive (loss) income attributable to member of Summit Materials, LLC	(53,638)	(39,756)
Summit Materials, LLC | Guarantors
Condensed Consolidating Statements of Operations
Revenue	276,375	221,655
Cost of revenue (excluding items shown separately below)	211,992	172,888
General and administrative expenses	43,373	33,066
Depreciation, depletion, amortization and accretion	38,439	30,669
Operating loss	(17,429)	(14,968)
Other (income) loss, net	235	331
Interest expense	213	5,328
Loss from operations before taxes	(17,877)	(20,627)
Income tax (benefit) expense	(2,180)	(8,088)
Net income (loss)	(15,697)	(12,539)
Net income (loss) attributable to member of Summit Materials, LLC	(15,697)	(12,539)
Comprehensive (loss) income attributable to member of Summit Materials, LLC	(16,109)	(14,773)
Summit Materials, LLC | Non Guarantors
Condensed Consolidating Statements of Operations
Revenue	9,410	8,688
Cost of revenue (excluding items shown separately below)	7,088	5,866
General and administrative expenses	1,318	1,437
Depreciation, depletion, amortization and accretion	651	1,057
Operating loss	353	328
Other (income) loss, net	(35)	(183)
Interest expense	864	860
Loss from operations before taxes	(476)	(349)
Income tax (benefit) expense	2	(61)
Net income (loss)	(478)	(288)
Net income (loss) attributable to member of Summit Materials, LLC	(478)	(288)
Comprehensive (loss) income attributable to member of Summit Materials, LLC	$ (1,184)	$ 4,354

Guarantor and Non-Guarantor F62

Guarantor and Non-Guarantor Financial Information - Schedule of Condensed Consolidating Statements of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 01, 2017	Apr. 02, 2016
Condensed Consolidating Statements of Operations
Net cash (used in) provided by operating activities	$ (45,539)	$ (41,958)
Cash flow from investing activities:
Acquisitions, net of cash acquired	(112,333)	(249,111)
Purchase of property, plant and equipment	(51,056)	(39,125)
Proceeds from the sale of property, plant, and equipment	4,325	6,019
Other	974
Net cash used for investing activities	(158,090)	(282,217)
Cash flow from financing activities:
Capital issuance costs	(638)
Net proceeds from debt issuance		250,000
Payments on long-term debt	(3,566)	(3,458)
Payments on acquisition-related liabilities	(16,414)	(11,973)
Financing costs	(699)	(5,001)
Distributions from partnership	(79)
Net cash provided by financing activities	216,244	229,568
Impact of cash on foreign currency	100	446
Net increase (decrease) in cash	12,715	(94,161)
Cash and cash equivalents-beginning of period	143,392	186,405
Cash and cash equivalents-end of period	156,107	92,244
Summit Materials, LLC
Condensed Consolidating Statements of Operations
Net cash (used in) provided by operating activities	(45,076)	(41,958)
Cash flow from investing activities:
Acquisitions, net of cash acquired	(112,333)	(249,111)
Purchase of property, plant and equipment	(51,056)	(39,125)
Proceeds from the sale of property, plant, and equipment	4,325	6,019
Other	974
Net cash used for investing activities	(158,090)	(282,217)
Cash flow from financing activities:
Proceeds from Partnership Contribution	238,629
Capital issuance costs	(638)
Net proceeds from debt issuance		250,000
Payments on long-term debt	(3,566)	(3,458)
Payments on acquisition-related liabilities	(13,914)	(9,473)
Financing costs	(699)	(5,001)
Distributions from partnership	(2,579)	(2,500)
Other	(732)
Net cash provided by financing activities	216,501	229,568
Impact of cash on foreign currency	100	446
Net increase (decrease) in cash	13,435	(94,161)
Cash and cash equivalents-beginning of period	142,672	185,388
Cash and cash equivalents-end of period	156,107	91,227
Summit Materials, LLC | Eliminations
Cash flow from financing activities:
Loans received from and payments made on loans from other Summit Companies	(8,558)	1,237
Net cash provided by financing activities	(8,558)	1,237
Net increase (decrease) in cash	(8,558)	1,237
Cash and cash equivalents-beginning of period	(10,666)	(11,600)
Cash and cash equivalents-end of period	(19,224)	(10,363)
Summit Materials, LLC | Issuers
Condensed Consolidating Statements of Operations
Net cash (used in) provided by operating activities	(42,891)	(44,336)
Cash flow from investing activities:
Acquisitions, net of cash acquired		(42,073)
Purchase of property, plant and equipment	(1,115)	(593)
Net cash used for investing activities	(1,115)	(42,666)
Cash flow from financing activities:
Proceeds from investment by member		(448,711)
Proceeds from Partnership Contribution	164,795
Capital issuance costs	(638)
Net proceeds from debt issuance		250,000
Loans received from and payments made on loans from other Summit Companies	(92,904)	206,028
Payments on long-term debt	(1,625)	(1,625)
Payments on acquisition-related liabilities		(400)
Financing costs	(699)	(5,001)
Distributions from partnership	(2,579)	(2,500)
Other	(319)
Net cash provided by financing activities	66,031	(2,209)
Net increase (decrease) in cash	22,025	(89,211)
Cash and cash equivalents-beginning of period	133,862	180,712
Cash and cash equivalents-end of period	155,887	91,501
Summit Materials, LLC | Guarantors
Condensed Consolidating Statements of Operations
Net cash (used in) provided by operating activities	(4,035)	5,841
Cash flow from investing activities:
Acquisitions, net of cash acquired	(112,333)	(207,038)
Purchase of property, plant and equipment	(49,931)	(38,295)
Proceeds from the sale of property, plant, and equipment	4,325	6,019
Other	974
Net cash used for investing activities	(156,965)	(239,314)
Cash flow from financing activities:
Proceeds from investment by member		448,711
Proceeds from Partnership Contribution	73,834
Loans received from and payments made on loans from other Summit Companies	101,616	(206,820)
Payments on long-term debt	(1,941)	(1,833)
Payments on acquisition-related liabilities	(13,914)	(9,073)
Other	(392)
Net cash provided by financing activities	159,203	230,985
Net increase (decrease) in cash	(1,797)	(2,488)
Cash and cash equivalents-beginning of period	4,820	4,068
Cash and cash equivalents-end of period	3,023	1,580
Summit Materials, LLC | Non Guarantors
Condensed Consolidating Statements of Operations
Net cash (used in) provided by operating activities	1,850	(3,463)
Cash flow from investing activities:
Purchase of property, plant and equipment	(10)	(237)
Net cash used for investing activities	(10)	(237)
Cash flow from financing activities:
Loans received from and payments made on loans from other Summit Companies	(154)	(445)
Other	(21)
Net cash provided by financing activities	(175)	(445)
Impact of cash on foreign currency	100	446
Net increase (decrease) in cash	1,765	(3,699)
Cash and cash equivalents-beginning of period	14,656	12,208
Cash and cash equivalents-end of period	$ 16,421	$ 8,509