Quarterly report pursuant to Section 13 or 15(d)

REVENUES - Narrative (Details)

v3.21.2
REVENUES - Narrative (Details)
3 Months Ended
Jun. 30, 2021
USD ($)
contract
Mar. 31, 2021
USD ($)
Disaggregation of Revenue [Line Items]    
Types of contracts | contract 2  
Revenue recognized $ 4,400,000  
Contract with customer, liability 14,400,000 $ 13,300,000
Contract with customer, asset, after allowance for credit loss $ 0 0
Low    
Disaggregation of Revenue [Line Items]    
Period of service 1 year  
Invoicing payment due period 30 days  
Contract termination notice period 30 days  
High    
Disaggregation of Revenue [Line Items]    
Period of service 5 years  
Invoicing payment due period 60 days  
Contract termination notice period 365 days  
Revenue    
Disaggregation of Revenue [Line Items]    
Contracts with customers $ 160,500,000 $ 167,300,000