GOODWILL	9 Months Ended
Sep. 30, 2021
GOODWILL [Abstract]
GOODWILL	Note 15: Goodwill Goodwill is recognized when the consideration paid for a business exceeds the fair value of the tangible and identifiable intangible assets acquired. Goodwill is allocated to reporting units for purposes of testing goodwill for impairment. There were no charges for goodwill impairment in the nine month periods ended September 30, 2021 and 2020. Accumulated goodwill impairment losses amount to $252,664,000 (year 2008) in the Calcium segment. We have four reportable segments organized around our principal product lines: Aggregates, Asphalt, Concrete and Calcium. Changes in the carrying amount of goodwill by reportable segment from December 31, 2020 to September 30, 2021 are shown below: in thousandsAggregates Asphalt Concrete Calcium Total Goodwill Totals at December 31, 2020$ 3,080,479 $ 91,633 $ 0 $ 0 $ 3,172,112 Goodwill of acquired businesses 1 185,981 316,670 502,651 Totals at September 30, 2021$ 3,266,460 $ 91,633 $ 316,670 $ 0 $ 3,674,763 1See Note 16 for a summary of the current year acquisitions. We test goodwill for impairment on an annual basis or more frequently if events or circumstances change in a manner that would more likely than not reduce the fair value of a reporting unit below its carrying value. A decrease in the estimated fair value of one or more of our reporting units could result in the recognition of a material, noncash write-down of goodwill.

GOODWILL

9 Months Ended

Sep. 30, 2021

Note 15: Goodwill Goodwill is recognized when the consideration paid for a business exceeds the fair value of the tangible and identifiable intangible assets acquired. Goodwill is allocated to reporting units for purposes of testing goodwill for impairment. There were no charges for goodwill impairment in the nine month periods ended September 30, 2021 and 2020. Accumulated goodwill impairment losses amount to $252,664,000 (year 2008) in the Calcium segment. We have four reportable segments organized around our principal product lines: Aggregates, Asphalt, Concrete and Calcium. Changes in the carrying amount of goodwill by reportable segment from December 31, 2020 to September 30, 2021 are shown below: in thousandsAggregates Asphalt Concrete Calcium Total Goodwill Totals at December 31, 2020$ 3,080,479 $ 91,633 $ 0 $ 0 $ 3,172,112 Goodwill of acquired businesses 1 185,981 316,670 502,651 Totals at September 30, 2021$ 3,266,460 $ 91,633 $ 316,670 $ 0 $ 3,674,763 1See Note 16 for a summary of the current year acquisitions. We test goodwill for impairment on an annual basis or more frequently if events or circumstances change in a manner that would more likely than not reduce the fair value of a reporting unit below its carrying value. A decrease in the estimated fair value of one or more of our reporting units could result in the recognition of a material, noncash write-down of goodwill.