Loans And Allowance For Loan Losses (Age Analysis Of Past Due Loans) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 days past due	$ 37,314	$ 16,534
90 days and greater past due	41,989	20,677
Total past due	79,303	37,211
Current	1,299,432	1,726,277
Total loans, Noncovered	1,353,028	1,725,873
Loans receivable, Covered	25,707	37,615
Recorded loans > 90 days and accruing	3,290	43
Total	1,378,735	1,763,488	2,420,115
Noncovered [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 days past due	36,224	14,291
90 days and greater past due	38,394	13,549
Total past due	74,618	27,840
Current	1,278,410	1,698,033
Total loans, Noncovered	1,353,028	1,725,873
Recorded loans > 90 days and accruing	3,290	43
Covered [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 days past due	1,090	2,243
90 days and greater past due	3,595	7,128
Total past due	4,685	9,371
Current	21,022	28,244
Loans receivable, Covered	25,707	37,615
Other [Member] | Noncovered [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 days past due	538	362
90 days and greater past due	160	140
Total past due	698	502
Current	35,494	38,084
Total loans, Noncovered	36,192	38,586
Recorded loans > 90 days and accruing	72	17
Other [Member] | Covered [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 days and greater past due	2	7
Total past due	2	7
Current	107	263
Loans receivable, Covered	109	270
Real Estate Mortgage [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, Noncovered	870,975	1,028,561
Loans receivable, Covered	18,298	23,686
Real Estate Mortgage [Member] | Commercial Real Estate [Member] | Noncovered [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 days past due	23,348	2,567
90 days and greater past due	18,337	4,667
Total past due	41,685	7,234
Current	829,290	1,021,327
Total loans, Noncovered	870,975	1,028,561
Real Estate Mortgage [Member] | Commercial Real Estate [Member] | Covered [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 days past due	1,090	2,243
90 days and greater past due	3,087	3,554
Total past due	4,177	5,797
Current	14,121	17,889
Loans receivable, Covered	18,298	23,686
Real Estate Mortgage [Member] | One-To-Four Family Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, Noncovered	70,954	80,375
Loans receivable, Covered	4,881	7,072
Real Estate Mortgage [Member] | One-To-Four Family Residential [Member] | Noncovered [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 days past due	1,479	1,206
90 days and greater past due	1,310	1,491
Total past due	2,789	2,697
Current	68,165	77,678
Total loans, Noncovered	70,954	80,375
Recorded loans > 90 days and accruing	747	23
Real Estate Mortgage [Member] | One-To-Four Family Residential [Member] | Covered [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 days and greater past due	52	188
Total past due	52	188
Current	4,829	6,884
Loans receivable, Covered	4,881	7,072
Real Estate Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	134,791	235,831	475,973
Real Estate Construction [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, Noncovered	130,753	227,098
Loans receivable, Covered	382	3,746
Real Estate Construction [Member] | Commercial Real Estate [Member] | Noncovered [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 days past due	3,501	1,825
90 days and greater past due	3,355	3,877
Total past due	6,856	5,702
Current	123,897	221,396
Total loans, Noncovered	130,753	227,098
Real Estate Construction [Member] | Commercial Real Estate [Member] | Covered [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 days and greater past due	130	3,009
Total past due	130	3,009
Current	252	737
Loans receivable, Covered	382	3,746
Real Estate Construction [Member] | One-To-Four Family Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, Noncovered	3,656	4,987
Real Estate Construction [Member] | One-To-Four Family Residential [Member] | Noncovered [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	3,656	4,987
Total loans, Noncovered	3,656	4,987
Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	242,535	349,107	458,180
Commercial [Member] | Noncovered [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 days past due	7,358	8,331
90 days and greater past due	15,232	3,374
Total past due	22,590	11,705
Current	217,908	334,561
Total loans, Noncovered	240,498	346,266
Recorded loans > 90 days and accruing	2,471	3
Commercial [Member] | Covered [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 days and greater past due	324	370
Total past due	324	370
Current	1,713	2,471
Loans receivable, Covered	$ 2,037	$ 2,841