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Discontinued Operations - Securities (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Dec. 31, 2019
Discontinued Operations      
Available-for-sale unrealized gains $ 28,219   $ 12,702
Available-for-sale unrealized losses (1,057)   (1,026)
Recognized net gain (loss) on equity securities (100) $ (100)  
Discontinued Operations, Held-for-sale | NLC      
Discontinued Operations      
Available-for-sale unrealized gains 3,500   2,500
Available-for-sale unrealized losses 0    
Unrealized net (losses) gains from equity securities (3,300)   1,100
Recognized net gain (loss) on equity securities (4,400) $ 1,200  
Deposit with various state insurance departments 9,500   $ 9,300
Note payable held for sale $ 27,500