Covered Assets And Indemnification Asset (Allowance And Recorded Investment By Covered Loan Portfolio) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012		Mar. 31, 2012	Dec. 31, 2011	Jun. 30, 2011		Mar. 31, 2011	Dec. 31, 2010
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans acquired with deteriorated credit quality	$ 11,742				$ 9,142
Collectively evaluated for impairment	1,235	[1]			1,077	[1]
Total	12,977	[2]	12,635	14,320	10,219	[2]	8,243	2,721
Covered loans and leases, Loans acquired with deteriorated credit quality	539,821				666,969
Collectively evaluated for impairment	27,119	[1]			31,707	[2]
Total	566,940	[2]		636,771	698,676	[1]
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans acquired with deteriorated credit quality	6,926				5,303
Collectively evaluated for impairment	535	[1]			411	[1]
Total	7,461	[2]	8,298	8,939	5,714	[2]	5,068	2,465
Covered loans and leases, Loans acquired with deteriorated credit quality	449,784				549,771
Collectively evaluated for impairment	2,905	[1]			1,943	[2]
Total	452,689	[2]			551,714	[1]
Term & Multifamily [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	425,993			474,054
Construction & Development[Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	14,083			14,820
Residential Development [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	12,613			17,763
Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans acquired with deteriorated credit quality	3,936				2,019
Collectively evaluated for impairment	611	[1]			613	[1]
Total	4,547	[2]	3,275	3,964	2,632	[2]	1,800	176
Covered loans and leases, Loans acquired with deteriorated credit quality	34,690				42,352
Collectively evaluated for impairment	16,658	[1]			23,379	[2]
Total	51,348	[2]			65,731	[1]
Term [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	30,731			34,150
LOC & Other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	20,617			23,426
Residential [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans acquired with deteriorated credit quality	619				1,163
Collectively evaluated for impairment	45	[1]			30	[1]
Total	664	[2]	740	991	1,193	[2]	962	56
Covered loans and leases, Loans acquired with deteriorated credit quality	51,243				68,291
Collectively evaluated for impairment	4,886	[1]			4,231	[2]
Total	56,129	[2]			72,522	[1]
Mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	30,269			35,503
Home Equity Loans & Lines [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	25,860			29,085
Consumer & Other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans acquired with deteriorated credit quality	261				657
Collectively evaluated for impairment	44	[1]			23	[1]
Total	305	[2]	322	426	680	[2]	413	24
Covered loans and leases, Loans acquired with deteriorated credit quality	4,104				6,555
Collectively evaluated for impairment	2,670	[1]			2,154	[2]
Total	$ 6,774	[2]		$ 7,970	$ 8,709	[1]

[1] In accordance with ASC 310-30, the valuation allowance is netted against the carrying value of the covered loan and lease balance.

[2] The allowance on covered loan and lease losses includes an allowance on covered loan advances on acquired loans subsequent to acquisition.