Covered Loans Receivable (Past Due Loans) (Details) (Covered Loans, USD $) In Thousands, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 Days	$ 5,173		$ 1,147
90 Days or Greater	5,336		5,565
Total Past Due	10,509		6,712
Current	115,691		57,042
Total	126,200		63,754
90 Days or More and Still Accruing	0	[1]	0	[1]
One-to-four Family Residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 Days	112		113
90 Days or Greater	0		0
Total Past Due	112		113
Current	5,878		4,664
Total	5,990		4,777
90 Days or More and Still Accruing	0	[1]	0	[1]
Commercial Business
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 Days	4,620		754
90 Days or Greater	4,299		4,843
Total Past Due	8,919		5,597
Current	96,314		48,084
Total	105,233		53,681
90 Days or More and Still Accruing	0	[1]	0	[1]
Commercial Business | Commercial and Industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 Days	2,262		726
90 Days or Greater	1,163		1,156
Total Past Due	3,425		1,882
Current	15,685		12,808
Total	19,110		14,690
90 Days or More and Still Accruing	0	[1]	0	[1]
Commercial Business | Owner-occupied Commercial Real Estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 Days	645		28
90 Days or Greater	2,680		147
Total Past Due	3,325		175
Current	55,919		24,191
Total	59,244		24,366
90 Days or More and Still Accruing	0	[1]	0	[1]
Commercial Business | Non-owner Occupied Commercial Real Estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 Days	1,713		0
90 Days or Greater	456		3,540
Total Past Due	2,169		3,540
Current	24,710		11,085
Total	26,879		14,625
90 Days or More and Still Accruing	0	[1]	0	[1]
Real Estate Construction and Land Development
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 Days	178		213
90 Days or Greater	310		644
Total Past Due	488		857
Current	5,518		699
Total	6,006		1,556
90 Days or More and Still Accruing	0	[1]	0	[1]
Real Estate Construction and Land Development | One-to-four Family Residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 Days	178		213
90 Days or Greater	90		644
Total Past Due	268		857
Current	2,178		699
Total	2,446		1,556
90 Days or More and Still Accruing	0	[1]	0	[1]
Real Estate Construction and Land Development | Five or More Family Residential and Commercial Properties
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 Days	0		0
90 Days or Greater	220		0
Total Past Due	220		0
Current	3,340		0
Total	3,560		0
90 Days or More and Still Accruing	0	[1]	0	[1]
Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 Days	263		67
90 Days or Greater	727		78
Total Past Due	990		145
Current	7,981		3,595
Total	8,971		3,740
90 Days or More and Still Accruing	$ 0	[1]	$ 0	[1]

[1] Excludes covered PCI loans.