Loans Receivable and Allowance for Loan and Lease Losses (Details 1) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Non-covered loans [Member]
Non-covered loans and covered loans, by class
30-89 Days Past Due	$ 10,931	$ 7,796
Greater Than 90 Days	0	0
Total Past Due	10,931	7,796
Non-Accrual	32,739	38,867
Current	1,493,914	1,169,991
Total Loans	1,537,584	1,216,654
Covered loan [Member]
Non-covered loans and covered loans, by class
30-89 Days Past Due	1,836	4,695
Greater Than 90 Days	0	0
Total Past Due	1,836	4,695
Non-Accrual	44,097	45,213
Current	67,360	76,368
Total Loans	113,293	126,276
Commercial and industrial [Member] | Acquired with credit deterioration [Member] | Non-covered loans [Member]
Non-covered loans and covered loans, by class
30-89 Days Past Due	0	0
Greater Than 90 Days	0	0
Total Past Due	0	0
Non-Accrual	966	178
Current	3,496	4,946
Total Loans	4,912	5,124
Commercial and industrial [Member] | Acquired with credit deterioration [Member] | Covered loan [Member]
Non-covered loans and covered loans, by class
30-89 Days Past Due	0	0
Greater Than 90 Days	0	0
Total Past Due	0	0
Non-Accrual	485	378
Current	1,691	0
Total Loans	2,176	378
Commercial and industrial [Member] | Remaining loans [Member] | Non-covered loans [Member]
Non-covered loans and covered loans, by class
30-89 Days Past Due	1,113	0
Greater Than 90 Days	0	0
Total Past Due	1,113	0
Non-Accrual	986	2,817
Current	65,129	61,795
Total Loans	67,228	64,612
Commercial and industrial [Member] | Remaining loans [Member] | Covered loan [Member]
Non-covered loans and covered loans, by class
30-89 Days Past Due	290	2,672
Greater Than 90 Days	0	0
Total Past Due	290	2,672
Non-Accrual	153	0
Current	9,705	10,034
Total Loans	10,148	12,706
Commercial real estate [Member] | Acquired with credit deterioration [Member] | Non-covered loans [Member]
Non-covered loans and covered loans, by class
30-89 Days Past Due	0	89
Greater Than 90 Days	0	0
Total Past Due	0	89
Non-Accrual	6,977	8,527
Current	52,365	57,542
Total Loans	59,342	66,158
Commercial real estate [Member] | Acquired with credit deterioration [Member] | Covered loan [Member]
Non-covered loans and covered loans, by class
30-89 Days Past Due	0	0
Greater Than 90 Days	0	0
Total Past Due	0	0
Non-Accrual	14,780	16,204
Current	0	2,039
Total Loans	14,780	18,243
Commercial real estate [Member] | Remaining loans [Member] | Non-covered loans [Member]
Non-covered loans and covered loans, by class
30-89 Days Past Due	3,542	1,025
Greater Than 90 Days	0	0
Total Past Due	3,542	1,025
Non-Accrual	15,350	18,729
Current	380,143	266,165
Total Loans	399,035	285,919
Commercial real estate [Member] | Remaining loans [Member] | Covered loan [Member]
Non-covered loans and covered loans, by class
30-89 Days Past Due	1,230	1,074
Greater Than 90 Days	0	0
Total Past Due	1,230	1,074
Non-Accrual	1,811	1,462
Current	28,072	28,010
Total Loans	31,113	30,546
Construction [Member] | Acquired with credit deterioration [Member] | Non-covered loans [Member]
Non-covered loans and covered loans, by class
30-89 Days Past Due	752	0
Greater Than 90 Days	0	0
Total Past Due	752	0
Non-Accrual	0	0
Current	3,247	3,393
Total Loans	3,999	3,393
Construction [Member] | Acquired with credit deterioration [Member] | Covered loan [Member]
Non-covered loans and covered loans, by class
30-89 Days Past Due	0	0
Greater Than 90 Days	0	0
Total Past Due	0	0
Non-Accrual	17,301	18,896
Current	0	3,266
Total Loans	17,301	22,162
Construction [Member] | Remaining loans [Member] | Non-covered loans [Member]
Non-covered loans and covered loans, by class
30-89 Days Past Due	357	0
Greater Than 90 Days	0	0
Total Past Due	357	0
Non-Accrual	3,563	5,630
Current	5,067	6,248
Total Loans	8,987	11,878
Construction [Member] | Remaining loans [Member] | Covered loan [Member]
Non-covered loans and covered loans, by class
30-89 Days Past Due	0	92
Greater Than 90 Days	0	0
Total Past Due	0	92
Non-Accrual	6,643	2,584
Current	6,915	13,088
Total Loans	13,558	15,764
Residential real estate [Member] | Acquired with credit deterioration [Member] | Non-covered loans [Member]
Non-covered loans and covered loans, by class
30-89 Days Past Due	689	1,002
Greater Than 90 Days	0	0
Total Past Due	689	1,002
Non-Accrual	1,229	1,423
Current	15,229	16,156
Total Loans	17,147	18,581
Residential real estate [Member] | Acquired with credit deterioration [Member] | Covered loan [Member]
Non-covered loans and covered loans, by class
30-89 Days Past Due	0	0
Greater Than 90 Days	0	0
Total Past Due	0	0
Non-Accrual	2,422	4,002
Current	0	0
Total Loans	2,422	4,002
Residential real estate [Member] | First mortgages [Member] | Non-covered loans [Member]
Non-covered loans and covered loans, by class
30-89 Days Past Due	304	314
Greater Than 90 Days	0	0
Total Past Due	304	314
Non-Accrual	595	700
Current	52,970	14,652
Total Loans	53,869	15,666
Residential real estate [Member] | First mortgages [Member] | Covered loan [Member]
Non-covered loans and covered loans, by class
30-89 Days Past Due	0	570
Greater Than 90 Days	0	0
Total Past Due	0	570
Non-Accrual	0	0
Current	9,597	8,601
Total Loans	9,597	9,171
Residential real estate [Member] | Home equity [Member] | Non-covered loans [Member]
Non-covered loans and covered loans, by class
30-89 Days Past Due	381	183
Greater Than 90 Days	0	0
Total Past Due	381	183
Non-Accrual	657	823
Current	19,485	18,223
Total Loans	20,523	19,229
Residential real estate [Member] | Home equity [Member] | Covered loan [Member]
Non-covered loans and covered loans, by class
30-89 Days Past Due	208	281
Greater Than 90 Days	0	0
Total Past Due	208	281
Non-Accrual	324	1,532
Current	7,654	7,479
Total Loans	8,186	9,292
Consumer [Member] | Acquired with credit deterioration [Member] | Non-covered loans [Member]
Non-covered loans and covered loans, by class
30-89 Days Past Due	10	7
Greater Than 90 Days	0	0
Total Past Due	10	7
Non-Accrual	83	6
Current	472	233
Total Loans	565	246
Consumer [Member] | Remaining loans [Member] | Non-covered loans [Member]
Non-covered loans and covered loans, by class
30-89 Days Past Due	67	14
Greater Than 90 Days	0	0
Total Past Due	67	14
Non-Accrual	5	34
Current	1,765	1,917
Total Loans	1,837	1,965
Mortgage Warehouse [Member] | Non-covered loans [Member]
Non-covered loans and covered loans, by class
30-89 Days Past Due		0
Greater Than 90 Days		0
Total Past Due		0
Non-Accrual		0
Current		619,318
Total Loans		619,318
Mortgage Warehouse [Member] | Acquired with credit deterioration [Member] | Non-covered loans [Member]
Non-covered loans and covered loans, by class
30-89 Days Past Due	0
Greater Than 90 Days	0
Total Past Due	0
Non-Accrual	0
Current	0
Total Loans	0
Mortgage Warehouse [Member] | Remaining loans [Member] | Non-covered loans [Member]
Non-covered loans and covered loans, by class
30-89 Days Past Due	0
Greater Than 90 Days	0
Total Past Due	0
Non-Accrual	0
Current	801,994
Total Loans	801,994
Manufactured housing [Member] | Acquired with credit deterioration [Member] | Non-covered loans [Member]
Non-covered loans and covered loans, by class
30-89 Days Past Due	2,252	1,681
Greater Than 90 Days	0	0
Total Past Due	2,252	1,681
Non-Accrual	2,328	0
Current	2,977	7,048
Total Loans	7,557	8,729
Manufactured housing [Member] | Acquired with credit deterioration [Member] | Covered loan [Member]
Non-covered loans and covered loans, by class
30-89 Days Past Due	0	0
Greater Than 90 Days	0	0
Total Past Due	0	0
Non-Accrual	70	77
Current	0	0
Total Loans	70	77
Manufactured housing [Member] | Remaining loans [Member] | Non-covered loans [Member]
Non-covered loans and covered loans, by class
30-89 Days Past Due	1,464	3,481
Greater Than 90 Days	0	0
Total Past Due	1,464	3,481
Non-Accrual	0	0
Current	89,125	92,355
Total Loans	90,589	95,836
Manufactured housing [Member] | Remaining loans [Member] | Covered loan [Member]
Non-covered loans and covered loans, by class
30-89 Days Past Due	108	6
Greater Than 90 Days	0	0
Total Past Due	108	6
Non-Accrual	108	78
Current	3,726	3,851
Total Loans	$ 3,942	$ 3,935