Fair Value Disclosures (Summary Of Amount By Which Contractual Principal Exceeds Fair Value For Loans And Other Receivables Measured At Fair Value Under Fair Value Option) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Loans and other receivables	$ 408,369	$ 403,119
Loans and other receivables greater than 90 days past due	29,720	5,594
Loans and other receivables on nonaccrual status	$ 54,652	$ (22,360)