ACQUISITIONS AND DIVESTITURES (Narrative) (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2020 USD ($) item	Mar. 31, 2019 USD ($)	Dec. 31, 2019 USD ($)
Significant Acquisitions and Disposals [Line Items]
Amount of assets divested	$ 0
Cash consideration	$ 0	$ (1,122)
Number of facilities divested | item	2
Gain on sale of property, plant & equipment and businesses	$ 999	7,297
Acquisitions 2019 [Member]
Significant Acquisitions and Disposals [Line Items]
Total consideration			$ 45,273
Amortizable intangible assets recognized			$ 25,443
Estimated weighted-average amortization period of intangible assets	19 years 6 months
Intangible assets amortization period, tax purposes	15 years
Georgia [Member]
Significant Acquisitions and Disposals [Line Items]
Gain on sale of property, plant & equipment and businesses		$ 4,064