Fair Value Measurements (Schedule Of Fair Value Carried At Cost And Measured On A Nonrecurring Basis) (Details) - Nonrecurring [Member] - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes payable	$ 177,329	$ 172,230
Subordinated debt	26,035	25,025
Financial liabilities total	203,364	197,255
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes payable	177,329	172,230
Subordinated debt	26,035	25,025
Financial liabilities total	203,364	197,255
Carrying Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes payable	179,900	186,387
Subordinated debt	28,689	29,246
Financial liabilities total	$ 208,589	$ 215,633