Reinsurance And Policy Benefits And Losses Claims And Loss Expenses Payable (Cumulative Paid Claims And Allocated Claim Adjustment Expense Net Of Reinsurance) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Incurred claims development [Abstract]
Shortduration Insurance Contracts Cumulative Paid Claims And Allocated Claim Adjustment Expense Net	$ 96,255
All outstanding liabilities before 2012, net of reinsurance	78,955
Liabilities for claims and claim adjustment expenses, net of reinsurance	111,768
Accident Year 2014 [Member]
Incurred claims development [Abstract]
Shortduration Insurance Contracts Cumulative Paid Claims And Allocated Claim Adjustment Expense Net	11,093	$ 11,092	$ 11,087	$ 10,343	$ 9,730	$ 9,601	$ 7,509
Accident Year 2015 [Member]
Incurred claims development [Abstract]
Shortduration Insurance Contracts Cumulative Paid Claims And Allocated Claim Adjustment Expense Net	11,764	11,764	11,746	11,643	10,665	$ 7,777
Accident Year 2016 [Member]
Incurred claims development [Abstract]
Shortduration Insurance Contracts Cumulative Paid Claims And Allocated Claim Adjustment Expense Net	15,263	15,012	14,825	11,638	$ 8,970
Accident Year 2017 [Member]
Incurred claims development [Abstract]
Shortduration Insurance Contracts Cumulative Paid Claims And Allocated Claim Adjustment Expense Net	16,766	15,150	12,689	$ 8,838
Accident Year 2018 [Member]
Incurred claims development [Abstract]
Shortduration Insurance Contracts Cumulative Paid Claims And Allocated Claim Adjustment Expense Net	19,215	14,737	$ 7,366
Accident Year 2019 [Member]
Incurred claims development [Abstract]
Shortduration Insurance Contracts Cumulative Paid Claims And Allocated Claim Adjustment Expense Net	11,114	$ 7,665
Accident Year 2020 [Member]
Incurred claims development [Abstract]
Shortduration Insurance Contracts Cumulative Paid Claims And Allocated Claim Adjustment Expense Net	$ 11,040