Loans And Allowance For Loan Losses (Age Analysis Of Past Due Loans) (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015	Mar. 31, 2015
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	$ 28,091	$ 21,522
Current	1,793,286	1,757,907
Loans receivable	1,821,377	1,779,429	$ 1,449,430	$ 1,449,430
Recorded loans > 90 days and accruing	66	500
30 Days To 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	5,766	1,164
90 Days And Greater Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	22,325	20,358
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable	862,287	938,462
One-To-Four Family Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable	183,693	161,958
Real Estate Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable	196,152	150,407
Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable	20,773	21,429
Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable	558,472	507,173
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	4,356
Current	857,931
Loans receivable	862,287		759,406
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member] | 30 Days To 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	462
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member] | 90 Days And Greater Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	3,894
Commercial Real Estate Portfolio Segment [Member] | Real Estate Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due		4,264
Current		934,198
Loans receivable		938,462
Recorded loans > 90 days and accruing		449
Commercial Real Estate Portfolio Segment [Member] | Real Estate Mortgage [Member] | 30 Days To 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due		272
Commercial Real Estate Portfolio Segment [Member] | Real Estate Mortgage [Member] | 90 Days And Greater Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due		3,992
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1,662	493
Current	174,143	128,060
Loans receivable	175,805	128,553
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member] | 30 Days To 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	851
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member] | 90 Days And Greater Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	811	493
Residential Portfolio Segment [Member] | One-To-Four Family Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	3,326
Current	180,367
Loans receivable	183,693		$ 85,338
Recorded loans > 90 days and accruing	14
Residential Portfolio Segment [Member] | One-To-Four Family Residential [Member] | 30 Days To 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	206
Residential Portfolio Segment [Member] | One-To-Four Family Residential [Member] | 90 Days And Greater Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	3,120
Residential Portfolio Segment [Member] | Real Estate Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due		2,326
Current		159,632
Loans receivable		161,958
Recorded loans > 90 days and accruing		48
Residential Portfolio Segment [Member] | Real Estate Mortgage [Member] | 30 Days To 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due		549
Residential Portfolio Segment [Member] | Real Estate Mortgage [Member] | 90 Days And Greater Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due		1,777
Residential Portfolio Segment [Member] | Construction Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	625	517
Current	19,722	21,337
Loans receivable	20,347	21,854
Residential Portfolio Segment [Member] | Construction Loans [Member] | 90 Days And Greater Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	625	517
Real Estate Construction [Member] | Real Estate Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable	196,152			199,247
Commercial Portfolio Segment [Member] | Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	17,647	13,769
Current	540,825	493,404
Loans receivable	558,472	507,173		384,788
Recorded loans > 90 days and accruing	48
Commercial Portfolio Segment [Member] | Commercial [Member] | 30 Days To 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	3,847	278
Commercial Portfolio Segment [Member] | Commercial [Member] | 90 Days And Greater Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	13,800	13,491
Consumer Portfolio Segment [Member] | Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	475	153
Current	20,298	21,276
Loans receivable	20,773	21,429		$ 20,651
Recorded loans > 90 days and accruing	4	3
Consumer Portfolio Segment [Member] | Other [Member] | 30 Days To 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	400	65
Consumer Portfolio Segment [Member] | Other [Member] | 90 Days And Greater Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	$ 75	$ 88