Investments In Securities and Fair Value (Schedule Of Fixed Maturity Securities) (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Investments, Debt and Equity Securities [Abstract]
Due in one year or less, Amortized Cost	$ 24,443
Due after one year through five years, Amortized Cost	47,393
Due five years through ten years, Amortized Cost	11,313
Due after ten years, Amortized Cost	819
Total, Amortized Cost	83,968
Due in one year or less, Fair Value	24,586
Due after one year through five years, Fair Value	50,670
Due five years through ten years, Fair Value	12,338
Due after ten years, Fair Value	1,388
Total, Fair Value	$ 88,982	$ 117,713