Reinsurance And Policy Benefits And Losses Claims And Loss Expenses Payable (Total Gross Liability For Unpaid Property And Casualty Claims And Claim Adjustment Expense) (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018
Shortduration Insurance Contracts Liability For Unpaid Claims And Allocated Claim Adjustment Expense Net [Abstract]
Liabilities for unpaid property and casualty claims and claim adjustment expenses, net of reinsurance		$ 134,050
Total reinsurance recoverable on unpaid property and casualty claims	$ 99,615	94,490	$ 110,335
Total gross liability for unpaid Property and Casualty claims and claim adjustment expense		$ 228,970