Loans And Allowance For Loan Losses (Classification Of Risk Category Of Loans, By Classes) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Financing Receivable, Recorded Investment [Line Items]
Total	$ 1,378,735	$ 1,763,488	$ 2,420,115
Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	1,117,295	1,491,396
Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	123,260	118,677
Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	134,614	150,510
Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	3,566	2,905
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	889,273	1,052,247	1,341,461
Commercial Real Estate [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	718,054	927,652
Commercial Real Estate [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	88,167	60,000
Commercial Real Estate [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	80,104	62,790
Commercial Real Estate [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	2,948	1,805
One-To-Four Family Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	75,835	87,447	98,922
One-To-Four Family Residential [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	71,975	84,475
One-To-Four Family Residential [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	1,901	564
One-To-Four Family Residential [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	1,923	2,408
One-To-Four Family Residential [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	36
Real Estate Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	134,791	235,831	475,973
Real Estate Construction [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	83,350	139,431
Real Estate Construction [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	25,964	46,126
Real Estate Construction [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	25,477	50,136
Real Estate Construction [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Total		138
Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	242,535	349,107	458,180
Commercial [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	208,019	301,636
Commercial [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	7,047	11,345
Commercial [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	26,887	35,164
Commercial [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	582	962
Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	36,301	38,856	45,579
Other [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	35,897	38,202
Other [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	181	642
Other [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	$ 223	$ 12