Noncovered Loans (Analysis of the Aged Loan Portfolio) (Details) (Noncovered Loans [Member], USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	$ 4,408,712	$ 4,158,873
30 - 59 Days Past Due	7,459	20,754
60 - 89 Days Past Due	5,890	5,809
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	0	0
Total Past Due	13,349	26,563
Nonaccrual Loans	30,613	34,015
Loans Receivable, Net	4,452,674	4,219,451
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	319,958	322,685
30 - 59 Days Past Due	717	835
60 - 89 Days Past Due	67	823
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	0	0
Total Past Due	784	1,658
Nonaccrual Loans	4,026	3,991
Loans Receivable, Net	324,768	328,334
Secured Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	1,640,938	1,457,820
30 - 59 Days Past Due	3,046	12,713
60 - 89 Days Past Due	2,602	681
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	0	0
Total Past Due	5,648	13,394
Nonaccrual Loans	11,190	12,433
Loans Receivable, Net	1,657,776	1,483,647
Unsecured Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	72,749	72,255
30 - 59 Days Past Due	142	156
60 - 89 Days Past Due	67	17
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	0	0
Total Past Due	209	173
Nonaccrual Loans	294	176
Loans Receivable, Net	73,252	72,604
One-to-Four Family Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	95,653	100,591
30 - 59 Days Past Due	1,415	1,993
60 - 89 Days Past Due	570	641
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	0	0
Total Past Due	1,985	2,634
Nonaccrual Loans	3,024	2,667
Loans Receivable, Net	100,662	105,892
Commercial Land [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	148,163	142,034
30 - 59 Days Past Due	0	0
60 - 89 Days Past Due	0	358
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	0	0
Total Past Due	0	358
Nonaccrual Loans	658	442
Loans Receivable, Net	148,821	142,834
Income Property Multifamily [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	1,191,882	1,138,732
30 - 59 Days Past Due	1,336	144
60 - 89 Days Past Due	9	3,289
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	0	0
Total Past Due	1,345	3,433
Nonaccrual Loans	5,062	4,267
Loans Receivable, Net	1,198,289	1,146,432
Owner Occupied Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	45,951	38,916
30 - 59 Days Past Due	0	0
60 - 89 Days Past Due	0	0
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	0	0
Total Past Due	0	0
Nonaccrual Loans	0	0
Loans Receivable, Net	45,951	38,916
Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	746,217	749,561
30 - 59 Days Past Due	410	4,714
60 - 89 Days Past Due	2,575	0
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	0	0
Total Past Due	2,985	4,714
Nonaccrual Loans	5,319	6,334
Loans Receivable, Net	754,521	760,609
Land And Acquisition [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	10,899	8,225
30 - 59 Days Past Due	0	199
60 - 89 Days Past Due	0	0
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	0	0
Total Past Due	0	199
Nonaccrual Loans	581	3,246
Loans Receivable, Net	11,480	11,670
Residential Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	48,699	41,533
30 - 59 Days Past Due	393	0
60 - 89 Days Past Due	0	0
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	0	0
Total Past Due	393	0
Nonaccrual Loans	459	459
Loans Receivable, Net	49,551	41,992
Income Property Multifamily Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	87,603	86,521
30 - 59 Days Past Due	0	0
60 - 89 Days Past Due	0	0
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	0	0
Total Past Due	0	0
Nonaccrual Loans	0	0
Loans Receivable, Net	$ 87,603	$ 86,521