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Regulatory Capital Requirements and Ratios (Details)
Dec. 31, 2018
Dec. 31, 2012
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]    
Risk-Based Capital, authorized control level 200.00%  
Capital to Risk Weighted Assets   157.00%
Consolidated Entities [Member]    
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]    
Capital to Risk Weighted Assets 1905.00%