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	3 Months Ended
	Mar. 31, 2016	Sep. 30, 2015	Mar. 31, 2015	Mar. 31, 2016	Dec. 31, 2015	Mar. 31, 2015
Financing Receivable, Recorded Investment [Line Items]
Balance at beginning of period	$ 26,106		$ 28,452
Loans charged-off	(3,725)		(230)
Recoveries	412		915
Provision (credit) for loan losses	4,375	$ 4,375	(1,887)
Balance at end of period	27,168		27,250
Individually evaluated for impairment				$ 4,127		$ 3,621
Collectively evaluated for impairment				23,041		23,629
Total ending allowance balance	26,106		28,452	27,168	$ 26,106	27,250
Individually evaluated for impairment				34,487		28,380
Collectively evaluated for impairment				1,740,109		1,405,555
Total ending loans balance				1,781,884	1,779,429	1,438,245
Receivables Acquired with Deteriorated Credit Quality [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loans balance				7,288		4,310
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loans balance				878,822	938,462
Commercial Real Estate [Member] | Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Balance at beginning of period	12,716		13,678
Loans charged-off	(14)		(2)
Recoveries	201		120
Provision (credit) for loan losses	(1,782)		(275)
Balance at end of period	11,121		13,521
Individually evaluated for impairment				914		1,951
Collectively evaluated for impairment				10,207		11,570
Total ending allowance balance	12,716		13,678	11,121	12,716	13,521
Individually evaluated for impairment				20,341		21,206
Collectively evaluated for impairment				854,097		735,651
Total ending loans balance				878,822		759,676
Commercial Real Estate [Member] | Commercial Real Estate Portfolio Segment [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loans balance				4,384		2,819
One-To-Four Family Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loans balance				158,078	161,958
One-To-Four Family Residential [Member] | Residential Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Balance at beginning of period	700		712
Loans charged-off	(84)
Recoveries	43		331
Provision (credit) for loan losses	216		(371)
Balance at end of period	875		672
Individually evaluated for impairment				135
Collectively evaluated for impairment				740		672
Total ending allowance balance	700		712	875	700	672
Individually evaluated for impairment				560		426
Collectively evaluated for impairment				155,892		84,568
Total ending loans balance				158,078		86,343
One-To-Four Family Residential [Member] | Residential Portfolio Segment [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loans balance				1,626		1,349
Real Estate Mortgage [Member] | Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loans balance					938,462
Real Estate Mortgage [Member] | Residential Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loans balance					161,958
Construction Loans [Member] | Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loans balance				156,454	129,070
Construction Loans [Member] | Residential Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loans balance				24,202	21,337
Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loans balance				543,822	507,173
Commercial [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Balance at beginning of period	9,965		9,614
Loans charged-off	(3,553)		(191)
Recoveries	145		379
Provision (credit) for loan losses	5,517		(1,035)
Balance at end of period	12,074		8,767
Individually evaluated for impairment				3,038		1,670
Collectively evaluated for impairment				9,036		7,097
Total ending allowance balance	9,965		9,614	12,074	9,965	8,767
Individually evaluated for impairment				13,153		6,355
Collectively evaluated for impairment				530,203		359,900
Total ending loans balance				543,822	507,173	366,282
Commercial [Member] | Commercial Portfolio Segment [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loans balance				466		27
Real Estate Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loans balance				180,656	150,407
Real Estate Construction [Member] | Real Estate Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Balance at beginning of period	2,533		4,159
Loans charged-off			(5)
Provision (credit) for loan losses	367		(105)
Balance at end of period	2,900		4,049
Individually evaluated for impairment				40
Collectively evaluated for impairment				2,860		4,049
Total ending allowance balance	2,533		4,159	2,900	2,533	4,049
Individually evaluated for impairment				390		392
Collectively evaluated for impairment				179,489		204,132
Total ending loans balance				180,656		204,638
Real Estate Construction [Member] | Real Estate Construction [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loans balance				777		114
Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loans balance				20,506	21,429
Other [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Balance at beginning of period	192		289
Loans charged-off	(74)		(32)
Recoveries	23		85
Provision (credit) for loan losses	57		(101)
Balance at end of period	198		241
Collectively evaluated for impairment				198		241
Total ending allowance balance	$ 192		$ 289	198	192	241
Individually evaluated for impairment				43		1
Collectively evaluated for impairment				20,428		21,304
Total ending loans balance				20,506	$ 21,429	21,306
Other [Member] | Consumer Portfolio Segment [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loans balance				$ 35		$ 1