Loans And Allowance For Loan Losses (By Balance In The Allowance For Loan Losses And The Recorded Investment In Loans Portfolio Classification Disaggregated On The Basis Of Impairment Evaluation Method) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Financing Receivable, Recorded Investment [Line Items]
Balance at beginning of period	$ 26,106	$ 28,452	$ 36,663
Loans charged-off	(6,997)	(1,351)	(6,916)
Recoveries	3,668	2,571	5,329
Provision (credit) for loan losses	4,769	(3,566)	(6,624)
Balance at end of period	27,546	26,106	28,452
Individually evaluated for impairment				$ 3,628	$ 4,112	$ 3,869
Collectively evaluated for impairment				23,878	21,994	24,583
Total ending allowance balance	26,106	28,452	36,663	27,546	26,106	28,452
Individually evaluated for impairment				14,119	34,861	38,111
Collectively evaluated for impairment				1,858,381	1,736,654	1,356,909
Acquired With Deteriorated Credit Quality				4,632	7,914	4,971
Total ending loans balance				1,877,132	1,779,429	1,399,991
Receivables Acquired with Deteriorated Credit Quality [Member]
Financing Receivable, Recorded Investment [Line Items]
Balance at end of period	40
Total ending allowance balance	40			40
Real Estate Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Balance at beginning of period	2,533	4,159	5,523
Loans charged-off		(21)	(655)
Recoveries		47
Provision (credit) for loan losses	969	(1,652)	(709)
Balance at end of period	3,502	2,533	4,159
Collectively evaluated for impairment				3,462	2,533	4,159
Total ending allowance balance	2,533	4,159	5,523	3,502	2,533	4,159
Individually evaluated for impairment				390	391	104
Collectively evaluated for impairment				219,015	149,344	196,905
Acquired With Deteriorated Credit Quality				654	672	114
Total ending loans balance				220,059	150,407	197,123
Real Estate Construction [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]
Financing Receivable, Recorded Investment [Line Items]
Balance at end of period	40
Total ending allowance balance	40			40
Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Balance at beginning of period	9,965	9,614	10,985
Loans charged-off	(6,148)	(628)	(4,014)
Recoveries	3,079	1,479	1,119
Provision (credit) for loan losses	3,162	(500)	1,524
Balance at end of period	10,058	9,965	9,614
Individually evaluated for impairment				1,346	2,526	1,822
Collectively evaluated for impairment				8,712	7,439	7,792
Total ending allowance balance	9,965	9,614	10,985	10,058	9,965	9,614
Individually evaluated for impairment				5,357	13,396	13,560
Collectively evaluated for impairment				550,615	493,026	336,818
Acquired With Deteriorated Credit Quality				276	751	32
Total ending loans balance				556,248	507,173	350,410
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loans balance				19,631	21,429
Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Balance at beginning of period	192	289	451
Loans charged-off	(522)	(193)	(558)
Recoveries	112	205	264
Provision (credit) for loan losses	534	(109)	132
Balance at end of period	316	192	289
Collectively evaluated for impairment				316	192	289
Total ending allowance balance	192	289	451	316	192	289
Individually evaluated for impairment					47	2
Collectively evaluated for impairment				19,631	21,370	21,953
Acquired With Deteriorated Credit Quality					12	1
Total ending loans balance				19,631	21,429	21,956
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Balance at beginning of period	12,716	13,678	18,854
Loans charged-off	(193)	(489)	(1,400)
Recoveries	400	282	3,733
Provision (credit) for loan losses	(416)	(755)	(7,509)
Balance at end of period	12,507	12,716	13,678
Individually evaluated for impairment				2,219	1,575	2,047
Collectively evaluated for impairment				10,288	11,141	11,631
Total ending allowance balance	12,716	13,678	18,854	12,507	12,716	13,678
Individually evaluated for impairment				6,606	20,332	23,907
Collectively evaluated for impairment				872,997	913,242	725,635
Acquired With Deteriorated Credit Quality				2,468	4,888	3,429
Total ending loans balance				882,071	938,462	752,971
Commercial Real Estate [Member] | Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loans balance				882,071	938,462
Commercial Real Estate [Member] | Residential Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loans balance				199,113	129,070
One-To-Four Family Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Balance at beginning of period	700	712	850
Loans charged-off	(134)	(20)	(289)
Recoveries	77	558	213
Provision (credit) for loan losses	520	(550)	(62)
Balance at end of period	1,163	700	712
Individually evaluated for impairment				63	11
Collectively evaluated for impairment				1,100	689	712
Total ending allowance balance	$ 700	$ 712	$ 850	1,163	700	712
Individually evaluated for impairment				1,766	695	538
Collectively evaluated for impairment				196,123	159,672	75,598
Acquired With Deteriorated Credit Quality				1,234	1,591	1,395
Total ending loans balance				199,123	161,958	$ 77,531
One-To-Four Family Residential [Member] | Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loans balance				199,123	161,958
One-To-Four Family Residential [Member] | Residential Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loans balance				$ 20,946	$ 21,337