Summary Of Significant Accounting Policies (Summary Of Supplemental Cash Flow Information) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Summary Of Significant Accounting Policies [Abstract]
Interest expense	$ 9,323	$ 6,826	$ 7,750
Income taxes	7,494	13,665	8,095
Real estate and other assets acquired in settlement of loans	374	394	726
Accrued and declared unpaid dividends	3,185	3,177	2,981
Increase (decrease) in net unsettled security purchases	(478)	568	(51,112)
Securities transferred from available for sale to held to maturity	$ 165,238	12,802	227,330
Loans transferred from held for sale to held for investment		853	$ 3,727
Common stock issued for acquisition		5,400
Loans and other non-cash assets, excluding goodwill and core deposit intangible asset		1,007
Deposits and other liabilities		$ 1,112