Unaudited Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Apr. 02, 2022	Apr. 03, 2021
Comprehensive income (loss)
Net loss	$ (34,800)	$ (23,245)
Other comprehensive income (loss):
Foreign currency translation adjustment	1,744	2,126
Less tax effect of other comprehensive loss items	(419)	(446)
Other comprehensive income	1,325	1,680
Comprehensive loss	(33,475)	(21,565)
Less comprehensive loss attributable to Summit Holdings	(489)	(683)
Comprehensive income attributable to Summit Inc./LLC	(32,986)	(20,882)
Summit Materials, LLC
Comprehensive income (loss)
Net loss	(46,387)	(27,790)
Other comprehensive income (loss):
Foreign currency translation adjustment	1,744	2,126
Other comprehensive income	1,744	2,126
Comprehensive income attributable to Summit Inc./LLC	$ (44,643)	$ (25,664)