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DISCONTINUED OPERATIONS (Narrative) (Details) - USD ($)
$ in Thousands
12 Months Ended
Mar. 30, 2018
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
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 $ 0 $ 27,307
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      
Proceeds from TSA $ 1,019