Fair Value Measurements (Schedule Of Fair Value Carried At Cost And Measured On A Nonrecurring Basis) (Details) - Nonrecurring [Member] - USD ($) $ in Thousands		Sep. 30, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes payable		$ 122,563	$ 121,204
Subordinated debt		15,854	15,247
Financial liabilities total		138,417	136,451
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes payable		122,563	121,204
Subordinated debt		15,854	15,247
Financial liabilities total		138,417	136,451
Carrying Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes payable	[1]	123,399	120,622
Subordinated debt	[1]	27,913	27,913
Financial liabilities total	[1]	$ 151,312	$ 148,535

[1] These balances are presented before any deduction for deferred financing costs.