Loans Receivable and Allowance for Loan and Lease Losses (Details 7) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Loans:
Individually evaluated for impairment	$ 45,026	$ 57,777
Collectively evaluated for impairment	1,475,118	1,140,710
Loans acquired with credit deterioration	145,066	167,568
Market discounts/premiums/valuation adjustments	(14,340)	(23,514)
Total loans	1,650,870	1,342,541
Allowance for loan and lease losses:
Individually evaluated for impairment	5,184	5,676
Collectively evaluated for impairment	7,938	6,760
Loans acquired with credit deterioration	2,996	2,596
Total Allowance for loan and lease losses	16,118	15,032
Commercial and Industrial [Member]
Loans:
Individually evaluated for impairment	3,232	7,775
Collectively evaluated for impairment	68,212	59,745
Loans acquired with credit deterioration	12,253	15,017
Total loans	83,697	82,537
Allowance for loan and lease losses:
Individually evaluated for impairment	481	426
Collectively evaluated for impairment	868	911
Loans acquired with credit deterioration	154	104
Total Allowance for loan and lease losses	1,503	1,441
Commercial Real Estate [Member]
Loans:
Individually evaluated for impairment	25,648	32,626
Collectively evaluated for impairment	405,632	287,839
Loans acquired with credit deterioration	77,378	87,684
Total loans	508,658	408,149
Allowance for loan and lease losses:
Individually evaluated for impairment	1,651	2,047
Collectively evaluated for impairment	4,995	4,063
Loans acquired with credit deterioration	1,620	920
Total Allowance for loan and lease losses	8,266	7,030
Construction [Member]
Loans:
Individually evaluated for impairment	14,309	16,142
Collectively evaluated for impairment	7,809	11,863
Loans acquired with credit deterioration	23,203	30,590
Total loans	45,321	58,595
Allowance for loan and lease losses:
Individually evaluated for impairment	3,007	2,986
Collectively evaluated for impairment	181	209
Loans acquired with credit deterioration	1,164	1,461
Total Allowance for loan and lease losses	4,352	4,656
Residential Real Estate [Member]
Loans:
Individually evaluated for impairment	1,754	1,212
Collectively evaluated for impairment	89,617	52,856
Loans acquired with credit deterioration	22,413	23,352
Total loans	113,784	77,420
Allowance for loan and lease losses:
Individually evaluated for impairment	45	195
Collectively evaluated for impairment	994	554
Loans acquired with credit deterioration	41	94
Total Allowance for loan and lease losses	1,080	843
Manufactured Housing [Member]
Loans:
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	96,713	102,876
Loans acquired with credit deterioration	9,097	10,592
Market discounts/premiums/valuation adjustments	0
Total loans	105,810	113,468
Allowance for loan and lease losses:
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	41	1
Loans acquired with credit deterioration	0	17
Total Allowance for loan and lease losses	41	18
Consumer [Member]
Loans:
Individually evaluated for impairment	83	22
Collectively evaluated for impairment	5,141	6,213
Loans acquired with credit deterioration	722	333
Market discounts/premiums/valuation adjustments	0
Total loans	5,946	6,568
Allowance for loan and lease losses:
Individually evaluated for impairment	0	22
Collectively evaluated for impairment	57	39
Loans acquired with credit deterioration	17	0
Total Allowance for loan and lease losses	74	61
Mortgage Warehouse [Member]
Loans:
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	801,994	619,318
Loans acquired with credit deterioration	0	0
Market discounts/premiums/valuation adjustments	0
Total loans	801,994	619,318
Allowance for loan and lease losses:
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	802	929
Loans acquired with credit deterioration	0	0
Total Allowance for loan and lease losses	802	929
Unallocated [Member]
Loans:
Individually evaluated for impairment		0
Collectively evaluated for impairment		0
Loans acquired with credit deterioration		0
Market discounts/premiums/valuation adjustments		(23,514)
Total loans		(23,514)
Allowance for loan and lease losses:
Individually evaluated for impairment		0
Collectively evaluated for impairment		54
Loans acquired with credit deterioration		0
Total Allowance for loan and lease losses		$ 54