Allowance For Loan Losses (Summary Of Activity In The Allowance For Loan Losses By Portfolio Segment) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Allowance For Loan Losses [Line Items]
Balance, beginning of year	$ 13,080	$ 16,810
Charge Offs	(914)	(6,044)
Recoveries	30	1,764
Advances
Provision		550
Balance, End of period	12,196	13,080
Commercial [Member]
Allowance For Loan Losses [Line Items]
Balance, beginning of year	1,147	1,772
Charge Offs		(513)
Recoveries	8	50
Advances
Provision	(466)	(162)
Balance, End of period	689	1,147
Agriculture [Member]
Allowance For Loan Losses [Line Items]
Balance, beginning of year	337	533
Charge Offs	(1)	(363)
Recoveries		51
Advances
Provision	(150)	116
Balance, End of period	186	337
Consumer Installment Loans [Member]
Allowance For Loan Losses [Line Items]
Balance, beginning of year	153	388
Charge Offs	(19)	(153)
Recoveries	7	128
Advances
Provision	(7)	(210)
Balance, End of period	134	153
All Other Loans [Member]
Allowance For Loan Losses [Line Items]
Balance, beginning of year	2	4
Advances
Provision	(1)	(2)
Balance, End of period	1	2
Unallocated [Member]
Allowance For Loan Losses [Line Items]
Balance, beginning of year	381	551
Advances
Provision	860	(170)
Balance, End of period	1,241	381
Real Estate [Member]
Allowance For Loan Losses [Line Items]
Balance, beginning of year	11,060	13,562
Charge Offs	(894)	(5,015)
Recoveries	15	1,535
Advances
Provision	(236)	978
Balance, End of period	9,945	11,060
Real Estate [Member] | Commercial [Member]
Allowance For Loan Losses [Line Items]
Balance, beginning of year	5,203	6,720
Charge Offs	(495)	(2,811)
Recoveries	1	439
Advances
Provision	(360)	855
Balance, End of period	4,349	5,203
Real Estate [Member] | Construction And Land Development [Member]
Allowance For Loan Losses [Line Items]
Balance, beginning of year	1,184	2,166
Charge Offs	(34)	(312)
Recoveries	3	452
Advances
Provision	(261)	(1,122)
Balance, End of period	892	1,184
Real Estate [Member] | Residential 1-4 Family [Member]
Allowance For Loan Losses [Line Items]
Balance, beginning of year	3,316	3,050
Charge Offs	(155)	(1,143)
Recoveries	11	576
Advances
Provision	291	833
Balance, End of period	3,463	3,316
Real Estate [Member] | Multifamily [Member]
Allowance For Loan Losses [Line Items]
Balance, beginning of year	133	552
Advances
Provision	(5)	(419)
Balance, End of period	128	133
Real Estate [Member] | Farmland [Member]
Allowance For Loan Losses [Line Items]
Balance, beginning of year	1,224	1,074
Charge Offs	(210)	(749)
Recoveries		68
Advances
Provision	99	831
Balance, End of period	$ 1,113	$ 1,224