Commitments And Contingencies (Details) $ in Thousands	Mar. 31, 2018 USD ($)
Loss Contingencies [Line Items]
Total unfunded commitments	$ 237,997
Revolving Home Equity And Credit Card Lines [Member]
Loss Contingencies [Line Items]
Total unfunded commitments	69,825
Construction [Member]
Loss Contingencies [Line Items]
Total unfunded commitments	43,734
Other Loans [Member]
Loss Contingencies [Line Items]
Total unfunded commitments	120,481
Standby Letters Of Credit [Member]
Loss Contingencies [Line Items]
Total unfunded commitments	$ 3,957