GOODWILL AND INTANTIBLE ASSETS (Tables)

12 Months Ended

Dec. 31, 2018

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, 2016	$   3,003,191	$     91,633	$              0	$              0	$  3,094,824
Goodwill of acquired businesses 1	27,497	0	0	0	27,497
Totals at December 31, 2017	$   3,030,688	$     91,633	$              0	$              0	$  3,122,321
Goodwill of acquired businesses 1	43,075	0	0	0	43,075
Totals at December 31, 2018	$   3,073,763	$     91,633	$              0	$              0	$  3,165,396

1 See Note 19 for a summary of acquisitions.

Gross Carrying Amount and Accumulated Amortization by Major Intangible Asset Class

in thousands	2018	2017
Gross Carrying Amount
Contractual rights in place	$    1,107,838	$  1,050,816
Noncompetition agreements	7,667	7,067
Favorable lease agreements	9,479	9,479
Permitting, permitting compliance and zoning rights	126,538	119,002
Other 1	4,517	4,616
Total gross carrying amount	$    1,256,039	$  1,190,980
Accumulated Amortization
Contractual rights in place	$      (122,100)	$     (94,534)
Noncompetition agreements	(4,212)	(2,440)
Favorable lease agreements	(3,533)	(3,179)
Permitting, permitting compliance and zoning rights	(27,464)	(24,352)
Other 1	(3,352)	(2,845)
Total accumulated amortization	$      (160,661)	$   (127,350)
Total Intangible Assets Subject to Amortization, net	$    1,095,378	$  1,063,630
Intangible Assets with Indefinite Lives	0	0
Total Intangible Assets, net	$    1,095,378	$  1,063,630
Amortization Expense for the Year	$         34,924	$       23,765

1 Includes customer relationships and tradenames and trademarks.

Estimated Amortization Expense

in thousands
Estimated Amortization Expense for Five Subsequent Years
2019	$        34,973
2020	33,698
2021	31,695
2022	29,146
2023	28,635