Accounts Receivable, Net - Summary of Accounts Receivable, Net (Details) - USD ($) $ in Thousands	Jul. 01, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Trade accounts receivable	$ 239,136	$ 152,845
Retention receivables	11,617	12,117
Receivables from related parties	373	721
Accounts receivable	251,126	165,683
Less: Allowance for doubtful accounts	(3,580)	(3,306)
Accounts receivable, net	247,546	162,377
Summit Materials, LLC
Accounts, Notes, Loans and Financing Receivable [Line Items]
Trade accounts receivable	239,136	152,845
Retention receivables	11,617	12,117
Receivables from related parties	373	721
Accounts receivable	251,126	165,683
Less: Allowance for doubtful accounts	(3,580)	(3,306)
Accounts receivable, net	$ 247,546	$ 162,377