Annual report pursuant to Section 13 and 15(d)

REPORTABLE SEGMENT INFORMATION - Major Customers (Details)

v3.20.4
REPORTABLE SEGMENT INFORMATION - Major Customers (Details) - Revenue from Contract with Customer Benchmark
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Customer Concentration Risk | Customer A      
Revenue, Major Customer [Line Items]      
Concentration risk percentage 42.50% 25.50% 24.10%
Customer Concentration Risk | Customer B      
Revenue, Major Customer [Line Items]      
Concentration risk percentage 20.30% 20.90% 16.50%
Customer Concentration Risk | Customer C      
Revenue, Major Customer [Line Items]      
Concentration risk percentage 9.30% 13.20% 12.20%
Customer Concentration Risk | Customer D      
Revenue, Major Customer [Line Items]      
Concentration risk percentage 8.60% 9.20% 8.90%
Customer Concentration Risk | Customer E      
Revenue, Major Customer [Line Items]      
Concentration risk percentage 5.80% 8.20% 7.10%
Product Concentration Risk | Customer A | Pressure Pumping      
Revenue, Major Customer [Line Items]      
Concentration risk percentage 99.80% 99.70% 97.40%
Product Concentration Risk | Customer B | Pressure Pumping      
Revenue, Major Customer [Line Items]      
Concentration risk percentage 97.60% 95.40% 98.30%
Product Concentration Risk | Customer C | Pressure Pumping      
Revenue, Major Customer [Line Items]      
Concentration risk percentage 99.90% 99.90% 100.00%
Product Concentration Risk | Customer D | Pressure Pumping      
Revenue, Major Customer [Line Items]      
Concentration risk percentage 99.70% 100.00% 100.00%
Product Concentration Risk | Customer E | Pressure Pumping      
Revenue, Major Customer [Line Items]      
Concentration risk percentage 85.70% 100.00% 100.00%