Annual report pursuant to Section 13 and 15(d)

EQUIPMENT AND PROPERTY (Details)

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EQUIPMENT AND PROPERTY (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Property, Plant and Equipment [Line Items]    
Less: accumulated depreciation $ (315,891) $ (294,226)
Net equipment and property 133,257 178,052
Buildings    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross 54,935 91,453
Operating equipment    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross 126,732 116,791
Furniture and fixtures    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross 19,261 19,860
Computer equipment and systems    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross 223,648 212,010
Plant And Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross 424,576 440,114
Less: accumulated depreciation (315,891) (294,226)
Net equipment and property 108,685 145,888
Land [Member]    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross $ 24,572 $ 32,164