Other Liabilities (Schedule Of Other Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Other Liabilities [Abstract]
Retirement compensation liabilities	$ 8,012	$ 7,986
Accounts payable	3,432	2,803
Historic tax credit investment	2,320	911
Interest payable	233	160
Other	301	858
Total other liabilities	$ 14,298	$ 12,718