Annual report pursuant to Section 13 and 15(d)

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Revenue, Remaining Performance Obligation (Details)

v3.20.4
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Revenue, Remaining Performance Obligation (Details)
$ in Millions
Dec. 31, 2020
USD ($)
Accounting Policies [Abstract]  
Total remaining performance obligation $ 130.6
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01  
Accounting Policies [Abstract]  
Total remaining performance obligation $ 33.9
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, period 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01  
Accounting Policies [Abstract]  
Total remaining performance obligation $ 31.6
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, period 2 years
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01  
Accounting Policies [Abstract]  
Total remaining performance obligation $ 21.2
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, period 2 years
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01  
Accounting Policies [Abstract]  
Total remaining performance obligation $ 43.9
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, period