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LONG-TERM DEBT - (Narrative) (Details) - USD ($)
12 Months Ended
Mar. 05, 2019
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Debt Instrument [Line Items]        
Repayments of promissory note   $ 48,000,000 $ 5,000,000 $ 0
Senior Unsecured Fixed Rate Notes, Due March 15, 2029 | Unsecured Debt        
Debt Instrument [Line Items]        
Debt instrument face amount $ 100,000,000.0      
Stated interest rate 7.50%      
Redemption price, percentage   100.00%    
Redemption premium, percentage   1.00%    
Senior Unsecured Fixed Rate Notes, Due March 15, 2029 | Unsecured Debt | After March 15, 2024        
Debt Instrument [Line Items]        
Redemption price, percentage   103.75%    
Senior Unsecured Fixed Rate Notes, Due March 15, 2029 | Unsecured Debt | March 15, 2025 through March 14, 2026        
Debt Instrument [Line Items]        
Redemption price, percentage   101.875%    
Senior Unsecured Fixed Rate Notes, Due March 15, 2029 | Unsecured Debt | March 15, 2026 and thereafter        
Debt Instrument [Line Items]        
Redemption price, percentage   100.00%    
Senior Unsecured Fixed Rate Notes, Due March 15, 2029 | Unsecured Debt | Change in Control        
Debt Instrument [Line Items]        
Redemption price, percentage   101.00%    
Senior Unsecured Fixed Rate Notes, Due July 1, 2022        
Debt Instrument [Line Items]        
Interest expense, debt   $ 3,600,000    
Senior Unsecured Fixed Rate Notes, Due July 1, 2022 | Unsecured Debt        
Debt Instrument [Line Items]        
Default rate, increase in fixed rate   0.50%    
1347 Property Insurance Holdings, Inc | Senior Unsecured Fixed Rate Notes, Due July 1, 2022        
Debt Instrument [Line Items]        
Repayments of promissory note $ 45,000,000.0