Annual report pursuant to Section 13 and 15(d)

INCOME TAXES (Reconciliation of Income Tax from Statutory Rates to Income Tax Expense (Benefit)) (Details)

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INCOME TAXES (Reconciliation of Income Tax from Statutory Rates to Income Tax Expense (Benefit)) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Income Tax Disclosure [Abstract]      
United States statutory income tax rates 21.00% 21.00%  
Effective Income Tax Rate Reconciliation, Amount [Abstract]      
Income tax expense (benefit) at United States statutory rate of 21% $ (389,900) $ 38,872 $ 27,532
State income taxes, net of federal tax benefits 713 3,137 4,860
Differences between foreign and United States statutory rates (12,794) 6,384 2,650
Non-United States income inclusions and exclusions 1,809 (3,222) (3,425)
United States income inclusions and exclusions (16,495) (2,582) (13,790)
Nondeductible items 39,861 10,118 26,376
Tax contingencies (1,302) (1,340) 389
Tax expense from acquired goodwill 6,950 6,107 4,353
Change in valuation allowance 344,161 8,536 (8,845)
Other, net (1,878) 882 665
Income tax expense (benefit) $ (28,875) $ 66,892 $ 40,765