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Reserves For Claims Summary Of The Company's Loss Reserves (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Liability for Future Policy Benefits and Unpaid Claims and Claims Adjustment Expense [Abstract]      
Known title claims $ 3,452 $ 3,585  
IBNR 31,110 29,999  
Total reserve for claims $ 34,562 $ 33,584 $ 31,333
% of known title reserves 10.00% 10.70%  
% of IBNR 90.00% 89.30%  
% of total loss reserves 100.00% 100.00%