Noncovered Loans (Analysis of the Aged Loan Portfolio) (Details) (Noncovered Loans [Member], USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	$ 4,158,873	$ 2,476,797
30 - 59 Days Past Due	20,754	9,168
60 - 89 Days Past Due	5,809	2,350
Total Past Due	26,563	11,518
Nonaccrual Loans	34,015	37,395
Loans Receivable, Net	4,219,451	2,525,710
Income Property Multifamily Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	86,521	28,342
30 - 59 Days Past Due	0	0
60 - 89 Days Past Due	0	0
Total Past Due	0	0
Nonaccrual Loans	0	0
Loans Receivable, Net	86,521	28,342
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	322,685	155,207
30 - 59 Days Past Due	835	387
60 - 89 Days Past Due	823	362
Total Past Due	1,658	749
Nonaccrual Loans	3,991	1,643
Loans Receivable, Net	328,334	157,599
Secured Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	1,457,820	1,091,770
30 - 59 Days Past Due	12,713	4,259
60 - 89 Days Past Due	681	1,485
Total Past Due	13,394	5,744
Nonaccrual Loans	12,433	9,037
Loans Receivable, Net	1,483,647	1,106,551
Unsecured Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	72,255	44,817
30 - 59 Days Past Due	156	252
60 - 89 Days Past Due	17	12
Total Past Due	173	264
Nonaccrual Loans	176	262
Loans Receivable, Net	72,604	45,343
One-to-Four Family Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	100,591	41,508
30 - 59 Days Past Due	1,993	193
60 - 89 Days Past Due	641	142
Total Past Due	2,634	335
Nonaccrual Loans	2,667	2,349
Loans Receivable, Net	105,892	44,192
Commercial Land [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	142,034	42,818
30 - 59 Days Past Due	0	311
60 - 89 Days Past Due	358	122
Total Past Due	358	433
Nonaccrual Loans	442	4,076
Loans Receivable, Net	142,834	47,327
Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	749,561	387,525
30 - 59 Days Past Due	4,714	1,040
60 - 89 Days Past Due	0	0
Total Past Due	4,714	1,040
Nonaccrual Loans	6,334	6,608
Loans Receivable, Net	760,609	395,173
Land And Acquisition [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	8,225	15,412
30 - 59 Days Past Due	199	0
60 - 89 Days Past Due	0	0
Total Past Due	199	0
Nonaccrual Loans	3,246	3,084
Loans Receivable, Net	11,670	18,496
Residential Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	41,533	29,848
30 - 59 Days Past Due	0	0
60 - 89 Days Past Due	0	0
Total Past Due	0	0
Nonaccrual Loans	459	1,816
Loans Receivable, Net	41,992	31,664
Income Property Multifamily [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	1,138,732	603,339
30 - 59 Days Past Due	144	2,726
60 - 89 Days Past Due	3,289	227
Total Past Due	3,433	2,953
Nonaccrual Loans	4,267	8,520
Loans Receivable, Net	1,146,432	614,812
Owner Occupied Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	38,916	36,211
30 - 59 Days Past Due	0	0
60 - 89 Days Past Due	0	0
Total Past Due	0	0
Nonaccrual Loans	0	0
Loans Receivable, Net	$ 38,916	$ 36,211