Stockholders' Equity (Tables)

12 Months Ended

Dec. 30, 2017

Schedule of changes in ownership of Summit Holdings


	Summit Inc. Shares (Class A)	LP Units	Total	Summit Inc. Ownership Percentage
Balance — January 2, 2016 (1)	52,402,692	50,275,825	102,678,517	51.0	%
Issuance of Class A shares	1,038	-	1,038
Exchanges during period	45,124,528	(45,124,528)	-
Other equity transactions	26,020	-	26,020
Balance — December 31, 2016 (1)	97,554,278	5,151,297	102,705,575	95.0	%
January 2017 public offering	10,000,000	-	10,000,000
Exchanges during period	1,461,677	(1,461,677)	-
Other equity transactions	1,334,639	-	1,334,639
Balance — December 30, 2017	110,350,594	3,689,620	114,040,214	96.8	%

(1)

The January 2, 2016 balance of Summit Inc. Class A Shares of 52,402,692 is shown to reflect the retroactive application of 1,135,692 and 1,521,056 of Class A common stock issued as a stock dividend on December 28, 2016 and December 22, 2017, respectively. The December 31, 2016 balance of Summit Inc. Class A Shares of 97,554,278 is shown to reflect the retroactive application of 1,521,056 of Class A common stock issued as a stock dividend on December 22, 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		income (loss)
Balance — January 2, 2016	$	1,049	$	(3,379)	$	(465)	$	(2,795)
Postretirement liability adjustment		401		—		—		401
Foreign currency translation adjustment		—		273		—		273
Loss on cash flow hedges		—		—		(128)		(128)
Balance — December 31, 2016	$	1,450	$	(3,106)	$	(593)	$	(2,249)
Postretirement curtailment adjustment, net of tax		309		—		—		309
Postretirement liability adjustment, net of tax		605		—		—		605
Foreign currency translation adjustment, net of tax		—		7,743		—		7,743
Income on cash flow hedges, net of tax		—		—		978		978
Balance — December 30, 2017	$	2,364	$	4,637	$	385	$	7,386

Summit Materials, LLC

Company Information

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		income (loss)
Balance — January 2, 2016	$	(7,607)	$	(19,915)	$	(944)	$	(28,466)
Postretirement liability adjustment		426		—		—		426
Foreign currency translation adjustment		—		2,125		—		2,125
Loss on cash flow hedges		—		—		(1,529)		(1,529)
Balance — December 31, 2016	$	(7,181)	$	(17,790)	$	(2,473)	$	(27,444)
Postretirement curtailment adjustment		429		—		—		429
Postretirement liability adjustment		699		—		—		699
Foreign currency translation adjustment		—		7,768		—		7,768
Income on cash flow hedges		—		—		1,413		1,413
Balance — December 30, 2017	$	(6,053)	$	(10,022)	$	(1,060)	$	(17,135)