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DISCONTINUED OPERATIONS (Narrative) (Details) - USD ($)
$ in Thousands
12 Months Ended 21 Months Ended
Mar. 30, 2018
Sep. 18, 2017
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]            
Gain on sale of discontinued operations, net of taxes     $ 0 $ 27,307 $ 0  
United Life Insurance Company | Discontinued Operations, Disposed of by Sale            
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]            
Cash proceeds $ 280,000          
Adjustment to proceeds from divestiture 21          
Proceeds from divestiture of business 279,979          
Gain on sale of discontinued operations, net of taxes $ 27,307          
Transition services agreement duration (up to)   24 months        
Poceeds from TSA           $ 885