Investments In Securities and Fair Value (Schedule Of Fixed Maturity Securities) (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Investments, Debt and Equity Securities [Abstract]
Due in one year or less, Amortized Cost	$ 31,052
Due after one year through five years, Amortized Cost	42,795
Due five years through ten years, Amortized Cost	18,250
Due after ten years, Amortized Cost	815
Total, Amortized Cost	92,912
Due in one year or less, Fair Value	31,253
Due after one year through five years, Fair Value	46,050
Due five years through ten years, Fair Value	19,741
Due after ten years, Fair Value	1,384
Total, Fair Value	$ 98,428	$ 104,638