GOODWILL (Tables)

3 Months Ended

Mar. 31, 2017

GOODWILL [Abstract]

Changes in Carrying Amount of Goodwill by Reportable Segment

in thousands	Aggregates	Asphalt Mix	Concrete	Calcium	Total
Goodwill
Total as of December 31, 2016	$  3,003,191	$     91,633	$              0	$              0	$    3,094,824
Goodwill of acquired businesses 1	6,417	0	0	0	6,417
Goodwill of divested businesses	0	0	0	0	0
Total as of March 31, 2017	$  3,009,608	$     91,633	$              0	$              0	$    3,101,241

1 See Note 16 for a summary of the current year acquisitions.