IMPAIRMENTS AND OTHER COSTS (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Restructuring Cost and Reserve [Line Items]
Impairment of goodwill and trade name	$ 276,016	$ 4,396
Impairment of property and equipment	3,184	519
Severance Costs	3,502	1,680
Yard closure costs	1,950
Lease Abandonment Costs	953	1,073
Accrued severance	2,900
Water services
Restructuring Cost and Reserve [Line Items]
Impairment of goodwill and trade name	186,468
Impairment of property and equipment	2,498
Severance Costs	1,823
Yard closure costs	1,950
Lease Abandonment Costs	935	229
Water infrastructure
Restructuring Cost and Reserve [Line Items]
Impairment of goodwill and trade name	80,466
Impairment of property and equipment	686
Severance Costs	288
Lease Abandonment Costs	51
Oilfield chemicals
Restructuring Cost and Reserve [Line Items]
Impairment of goodwill and trade name	9,082
Severance Costs	120
Other
Restructuring Cost and Reserve [Line Items]
Impairment of goodwill and trade name		4,396
Impairment of property and equipment		519
Severance Costs	1,271	1,680
Lease Abandonment Costs	(33)	844
Costs of revenue
Restructuring Cost and Reserve [Line Items]
Severance Costs	1,800
Yard closure costs	2,000
Lease Abandonment Costs	1,000
Selling, general and administrative
Restructuring Cost and Reserve [Line Items]
Severance Costs	$ 1,700	$ 1,700