GOODWILL AND INTANGIBLE ASSETS (Tables)

12 Months Ended

Dec. 31, 2020

GOODWILL AND INTANGIBLE ASSETS [Abstract]

Changes in Carrying Amount of Goodwill by Reportable Segment

in thousands	Aggregates	Asphalt	Concrete	Calcium	Total
Goodwill
Totals at December 31, 2018	$   3,073,763	$     91,633	$              0	$              0	$  3,165,396
Goodwill of acquired businesses 1	1,665	0	0	0	1,665
Totals at December 31, 2019	$   3,075,428	$     91,633	$              0	$              0	$  3,167,061
Goodwill of acquired businesses 1	5,051	0	0	0	5,051
Totals at December 31, 2020	$   3,080,479	$     91,633	$              0	$              0	$  3,172,112

¹ See Note 19 for a summary of recent acquisitions.

Gross Carrying Amount and Accumulated Amortization by Major Intangible Asset Class

in thousands	2020	2019
Gross Carrying Amount
Contractual rights in place	$    1,158,966	$  1,132,958
Noncompetition agreements	5,667	7,667
Permitting, permitting compliance and zoning rights	138,958	136,646
Other 1	51,927	11,951
Total gross carrying amount	$    1,355,518	$  1,289,222
Accumulated Amortization
Contractual rights in place	$      (188,953)	$   (155,555)
Noncompetition agreements	(5,167)	(6,126)
Permitting, permitting compliance and zoning rights	(30,180)	(30,545)
Other 1	(7,674)	(5,521)
Total accumulated amortization	$      (231,974)	$   (197,747)
Total Intangible Assets Subject to Amortization, net	$    1,123,544	$  1,091,475
Intangible Assets with Indefinite Lives	0	0
Total Intangible Assets, net	$    1,123,544	$  1,091,475
Amortization Expense for the Year	$         46,611	$       40,541

¹ Includes patents, customer relationships, tradenames and trademarks.

Estimated Amortization Expense

in thousands
Estimated Amortization Expense for Five Subsequent Years
2021	$        40,975
2022	38,200
2023	37,103
2024	35,429
2025	35,041