SEGMENT INFORMATION (Details) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) segment	Jun. 30, 2019 USD ($)
SEGMENT INFORMATION
Number of operating segments \| segment			3
Number of reportable segments \| segment			3
Segment information
Revenue	$ 92,239	$ 323,887	$ 370,524	$ 686,533
Income (loss) before taxes	(53,174)	8,639	(344,558)	10,217
Depreciation and Amortization	26,342	29,749	53,209	62,267
Capital Expenditures	1,361	23,166	8,411	54,811
(Loss) income from operations	(47,805)	11,179	(338,636)	17,812
Other expense, net	(2,700)	(59)	(2,441)	210
Operating segment \| Water Services
Segment information
Revenue	56,090	202,997	206,242	423,877
Income (loss) before taxes	(22,518)	16,234	(218,418)	39,894
Depreciation and Amortization	15,880	21,024	33,036	42,286
Capital Expenditures	(48)	9,489	1,219	22,615
Operating segment \| Water Infrastructure
Segment information
Revenue	15,439	51,719	73,323	105,335
Income (loss) before taxes	(11,037)	3,202	(93,114)	7,003
Depreciation and Amortization	7,024	6,072	14,052	12,161
Capital Expenditures	(205)	11,542	2,363	28,780
Operating segment \| Oilfield Chemicals
Segment information
Revenue	21,174	62,997	92,202	130,116
Income (loss) before taxes	(7,216)	4,424	(10,112)	6,437
Depreciation and Amortization	2,604	1,747	4,602	4,200
Capital Expenditures	1,614	2,132	4,504	3,352
Operating segment \| Other
Segment information
Revenue		9,403		33,073
Income (loss) before taxes	(38)	673	(13)	(5,850)
Depreciation and Amortization				1,714
Capital Expenditures		3	325	64
Elimination
Segment information
Revenue	(464)	(3,229)	(1,243)	(5,868)
Corporate
Segment information
Income (loss) before taxes	(6,996)	(13,354)	(16,979)	(29,672)
Depreciation and Amortization	834	906	1,519	1,906
Material reconciling items
Segment information
(Loss) income from operations	(40,809)	24,533	(321,657)	47,484
Interest expense, net	(513)	(839)	(844)	(1,932)
Other expense, net	$ (4,856)	$ (1,701)	$ (5,078)	$ (5,663)

The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

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