Stockholder's Equity/Members' Interest (Tables)

12 Months Ended

Dec. 28, 2019

Company Information

Schedule of Changes in Ownership of Summit Holdings

The following table summarizes the changes in our ownership of Summit Holdings: 

	Summit Inc. Shares (Class A)	LP Units		Total	Summit Inc. Ownership Percentage
Balance — December 30, 2017	110,350,594	3,689,620		114,040,214	96.8	%
Exchanges during period	254,102	(254,102	)	—
Stock option exercises	863,898	—		863,898
Other equity transactions	190,333	—		190,333
Balance — December 29, 2018	111,658,927	3,435,518		115,094,445	97.0	%
Exchanges during period	185,861	(185,861	)	—
Stock option exercises	1,065,446	—		1,065,446
Other equity transactions	399,151	—		399,151
Balance — December 28, 2019	113,309,385	3,249,657		116,559,042	97.2	%

Schedule of Changes in Each Component of Accumulated Other Comprehensive Income (Loss)

The changes in each component of accumulated other comprehensive income (loss) consisted of the following:

										Accumulated
				Foreign currency						other
	Change in			translation			Cash flow hedge			comprehensive
	retirement plans			adjustments			adjustments			income (loss)
Balance — December 30, 2017	$	2,364		$	4,637		$	385		$	7,386
Postretirement liability adjustment, net of tax	1,209			—			—			1,209
Foreign currency translation adjustment, net of tax	—			(6,784		)	—			(6,784		)
Income on cash flow hedges, net of tax	—			—			870			870
Balance — December 29, 2018	$	3,573		$	(2,147	)	$	1,255		$	2,681
Postretirement liability adjustment, net of tax	(1,402		)	—			—			(1,402		)
Foreign currency translation adjustment, net of tax	—			3,424			—			3,424
Loss on cash flow hedges, net of tax	—			—			(1,255		)	(1,255		)
Balance — December 28, 2019	$	2,171		$	1,277		$	—		$	3,448

Summit Materials, LLC

Company Information

Schedule of Changes in Each Component of Accumulated Other Comprehensive Income (Loss)

The changes in each component of accumulated other comprehensive income (loss) consisted of the following:

										Accumulated
				Foreign currency						other
	Change in			translation			Cash flow hedge			comprehensive
	retirement plans			adjustments			adjustments			income (loss)
Balance — December 30, 2017	$	(6,053	)	$	(10,022	)	$	(1,060	)	$	(17,135	)
Postretirement liability adjustment	1,661			—			—			1,661
Foreign currency translation adjustment	—			(9,348		)	—			(9,348		)
Income on cash flow hedges	—			—			1,206			1,206
Balance — December 29, 2018	$	(4,392	)	$	(19,370	)	$	146		$	(23,616	)
Postretirement liability adjustment	(1,925		)	—			—			(1,925		)
Foreign currency translation adjustment	—			4,716			—			4,716
Loss on cash flow hedges	—			—			(146		)	(146		)
Balance — December 28, 2019	$	(6,317	)	$	(14,654	)	$	—		$	(20,971	)