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DISCONTINUED OPERATIONS AND IMPAIRMENTS Table 1 - Discontinued Operations Income Statement Disclosures (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                      
(Loss) income from discontinued operations before income tax expense                 $ (312,426) $ 60,670 $ 39,233
Income tax expense                 101 1,251 2,164
(Loss) income from discontinued operations, net of tax $ 0 $ (4,777) $ (964) $ (306,786) $ (40,444) $ 4,473 $ 2,490 $ 92,900 (312,527) 59,419 37,069
Discontinued Operations, Held-for-sale or Disposed of by Sale [Member]                      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                      
Revenues                 248,981 441,495 369,247
Cost of revenues                 220,595 407,256 318,532
Impairment losses                 336,838 0 0
General and administrative expenses (excluding depreciation and amortization expense)                 1,231 6,133 4,684
Other deprecation and amortization expense                 0 271 263
Total costs and expenses                 558,664 413,660 323,479
Operating (loss) income                 (309,683) 27,835 45,768
Interest income, net                 32    
Interest expense, net                   (1,839) (1,309)
Other expense, net                 $ (2,775)   $ (5,226)
Other income, net                   $ 34,674