Annual report pursuant to Section 13 and 15(d)

SIGNIFICANT ACCOUNTING POLICIES - Useful Lives of Property, Plant and Equipment (Details)

v3.20.4
SIGNIFICANT ACCOUNTING POLICIES - Useful Lives of Property, Plant and Equipment (Details)
12 Months Ended
Dec. 31, 2020
Minimum | Buildings and property improvements  
Property, Plant and Equipment [Line Items]  
Estimated useful lives 5 years
Minimum | Vehicles  
Property, Plant and Equipment [Line Items]  
Estimated useful lives 1 year
Minimum | Equipment  
Property, Plant and Equipment [Line Items]  
Estimated useful lives 1 year
Minimum | Leasehold improvements  
Property, Plant and Equipment [Line Items]  
Estimated useful lives 5 years
Maximum | Buildings and property improvements  
Property, Plant and Equipment [Line Items]  
Estimated useful lives 30 years
Maximum | Vehicles  
Property, Plant and Equipment [Line Items]  
Estimated useful lives 5 years
Maximum | Equipment  
Property, Plant and Equipment [Line Items]  
Estimated useful lives 20 years
Maximum | Leasehold improvements  
Property, Plant and Equipment [Line Items]  
Estimated useful lives 20 years