Contingent Liabilities And Commitments (Details) - USD ($)	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Loss Contingencies [Line Items]
Commitments and contingent liabilities	$ 230,337,000		$ 210,140,000
Losses on commitments	0	$ 0
Commitments To Extend Credit [Member]
Loss Contingencies [Line Items]
Commitments and contingent liabilities	226,787,000		206,346,000
Standby Letters Of Credit [Member]
Loss Contingencies [Line Items]
Commitments and contingent liabilities	$ 3,550,000		$ 3,794,000