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IMPAIRMENTS AND OTHER COSTS (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
facility
Dec. 31, 2018
USD ($)
Restructuring Cost and Reserve [Line Items]      
Impairment of goodwill and trademark $ 276,016 $ 4,396 $ 17,894
Impairment and abandonment of property and equipment 7,910 3,715 6,657
Severance Costs 7,168 1,691 1,220
Yard closure costs 2,961    
Lease Abandonment Costs 4,350 $ 2,073 3,925
Accrued severance 600    
Number of abandoned facilities | facility   2  
Carrying value of impaired asset     2,300
Fair value of impaired asset     0
Water Services      
Restructuring Cost and Reserve [Line Items]      
Impairment of goodwill and trademark 186,468    
Impairment and abandonment of property and equipment 3,894 $ 969  
Severance Costs 4,569   538
Yard closure costs 2,645    
Lease Abandonment Costs 4,321 1,218 2,150
Water Infrastructure      
Restructuring Cost and Reserve [Line Items]      
Impairment of goodwill and trademark 80,466    
Impairment and abandonment of property and equipment 4,016 1,804 2,282
Severance Costs 500    
Lease Abandonment Costs 51    
Oilfield Chemicals      
Restructuring Cost and Reserve [Line Items]      
Impairment of goodwill and trademark 9,082   12,652
Severance Costs 813    
Yard closure costs 316    
Lease Abandonment Costs 42 11 28
Other      
Restructuring Cost and Reserve [Line Items]      
Impairment of goodwill and trademark   4,396 5,242
Impairment and abandonment of property and equipment   942 4,375
Severance Costs 1,286 1,691 682
Lease Abandonment Costs (64) 844 1,747
Pipelines      
Restructuring Cost and Reserve [Line Items]      
Impairment and abandonment of property and equipment   1,100  
layflat [Member]      
Restructuring Cost and Reserve [Line Items]      
Impairment and abandonment of property and equipment   1,000  
Canadian Fixed Assets [Member]      
Restructuring Cost and Reserve [Line Items]      
Impairment and abandonment of property and equipment   900 4,400
Owned Facility      
Restructuring Cost and Reserve [Line Items]      
Impairment and abandonment of property and equipment   600  
Costs of revenue      
Restructuring Cost and Reserve [Line Items]      
Severance Costs 4,000   500
Yard closure costs 3,000    
Selling, general and administrative      
Restructuring Cost and Reserve [Line Items]      
Severance Costs 3,200 $ 1,700 $ 700
Accrued Expenses and Other Current Liabilities      
Restructuring Cost and Reserve [Line Items]      
Yard closure costs $ 100