GOODWILL AND INTANGIBLES - (Tables)

3 Months Ended

Mar. 28, 2020

Business Acquisition [Line Items]

Goodwill by Reportable Segment and in Total

Changes in the carrying amount of goodwill, by reportable segment, from December 28, 2019 to March 28, 2020 are summarized as follows: 

	West			East		Cement		Total
Balance—December 28, 2019	$	584,617		$	410,426	$	204,656	$	1,199,699
Foreign currency translation adjustments	(4,142		)	—		—		(4,142		)
Balance—March 28, 2020	$	580,475		$	410,426	$	204,656	$	1,195,557

Intangible Assets by Type and in Total

The following table shows intangible assets by type and in total:

	March 28, 2020							December 28, 2019
	Gross  Carrying  Amount		Accumulated  Amortization			Net  Carrying  Amount		Gross  Carrying  Amount		Accumulated  Amortization			Net  Carrying  Amount
Mineral leases	$	19,064	$	(6,690	)	$	12,374	$	19,064	$	(6,408	)	$	12,656
Reserve rights	6,234		(2,323		)	3,911		6,234		(2,248		)	3,986
Trade names	1,000		(983		)	17		1,000		(958		)	42
Other	7,566		(1,075		)	6,491		7,566		(752		)	6,814
Total intangible assets	$	33,864	$	(11,071	)	$	22,793	$	33,864	$	(10,366	)	$	23,498

Estimated Amortization Expense for Intangible Assets

The estimated amortization expense for the intangible assets for each of the five years subsequent to March 28, 2020 is as follows:

2020 (nine months)	$	1,823
2021	2,147
2022	2,142
2023	2,009
2024	1,914
2025	1,869
Thereafter	10,889
Total	$	22,793

Summit Materials, LLC

Business Acquisition [Line Items]

Goodwill by Reportable Segment and in Total

Changes in the carrying amount of goodwill, by reportable segment, from December 28, 2019 to March 28, 2020 are summarized as follows:

	West			East		Cement		Total
Balance—December 28, 2019	$	585,617		$	410,426	$	204,656	$	1,200,699
Foreign currency translation adjustments	(4,142		)	—		—		(4,142		)
Balance—March 28, 2020	$	581,475		$	410,426	$	204,656	$	1,196,557

Intangible Assets by Type and in Total

The following table shows intangible assets by type and in total:

	March 28, 2020							December 28, 2019
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Mineral leases	$	19,064	$	(6,690	)	$	12,374	$	19,064	$	(6,408	)	$	12,656
Reserve rights	6,234		(2,323		)	3,911		6,234		(2,248		)	3,986
Trade names	1,000		(983		)	17		1,000		(958		)	42
Other	7,566		(1,075		)	6,491		7,566		(752		)	6,814
Total intangible assets	$	33,864	$	(11,071	)	$	22,793	$	33,864	$	(10,366	)	$	23,498

Estimated Amortization Expense for Intangible Assets

The estimated amortization expense for the intangible assets for each of the five years subsequent to March 28, 2020 is as follows:

2020 (nine months)	$	1,823
2021	2,147
2022	2,142
2023	2,009
2024	1,914
2025	1,869
Thereafter	10,889
Total	$	22,793