Commitments And Contingencies (Narrative) (Details) $ in Millions	6 Months Ended
	Jun. 30, 2017 USD ($) agreement	Dec. 31, 2016 USD ($) agreement
Loss Contingency, Information about Litigation Matters [Abstract]
Loan Balance of Swap Commitment	$ 14.2
Loss Contingency, Lawsuit Filing Date	March 18, 2011
Derivative Asset, Number of Instruments Held | agreement	8	7
Interest rate swap agreement Notional amount	$ 51.6	$ 34.7
Loan commitments	429.3	429.4
Letters of credit	$ 6.1	$ 7.2