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DISPOSITIONS AND DISCONTINUED OPERATIONS Table 1 - Discontinued Operations Income Statement Disclosures (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Discontinued Operations and Disposal Groups [Abstract]      
Revenues   $ 248,981 $ 441,495
Cost of revenues   220,595 407,256
Impairment losses   336,838 0
General and administrative expenses (excluding depreciation and amortization expense)   1,231 6,133
Other depreciation and amortization expense   0 271
Total costs and expenses   558,664 413,660
Operating (loss) income   (309,683) 27,835
Interest income, net   32  
Interest expense, net     (1,839)
Other expense, net   (2,775)  
Other income, net     34,674
(Loss) income from discontinued operations before income tax expense   (312,426) 60,670
Income tax expense $ 0 101 1,251
(Loss) income from discontinued operations, net of tax $ 0 $ (312,527) $ 59,419