Covered Assets And Indemnification Asset (Allowance And Recorded Investment By Covered Loan Portfolio) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012		Jun. 30, 2012	Dec. 31, 2011	Sep. 30, 2011		Jun. 30, 2011	Dec. 31, 2010
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans acquired with deteriorated credit quality	$ 14,352	[1]			$ 13,239	[1]
Collectively evaluated for impairment	1,180	[2]			1,184	[2]
Total	15,532		12,977	14,320	14,423		10,219	2,721
Covered loans and leases, Loans acquired with deteriorated credit quality	505,225	[1]			652,550	[1]
Collectively evaluated for impairment	25,352	[2]			34,003	[2]
Total	530,577			636,771	686,553
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans acquired with deteriorated credit quality	8,662	[1]			8,190	[1]
Collectively evaluated for impairment	574	[2]			446	[2]
Total	9,236		7,461	8,939	8,636		5,714	2,465
Covered loans and leases, Loans acquired with deteriorated credit quality	424,547	[1]			538,928	[1]
Collectively evaluated for impairment	2,942	[2]			2,916	[2]
Total	427,489				541,844
Term & Multifamily [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	404,497			474,054
Construction & Development [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	12,826			14,820
Residential Development [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	10,166			17,763
Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans acquired with deteriorated credit quality	4,785	[1]			2,992	[1]
Collectively evaluated for impairment	517	[2]			673	[2]
Total	5,302		4,547	3,964	3,665		2,632	176
Covered loans and leases, Loans acquired with deteriorated credit quality	28,141	[1]			42,313	[1]
Collectively evaluated for impairment	15,097	[2]			24,191	[2]
Total	43,238				66,504
Term [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	26,207			34,150
LOC & Other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	17,031			23,426
Residential [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans acquired with deteriorated credit quality	694	[1]			1,381	[1]
Collectively evaluated for impairment	44	[2]			35	[2]
Total	738		664	991	1,416		1,193	56
Covered loans and leases, Loans acquired with deteriorated credit quality	48,838	[1]			65,252	[1]
Collectively evaluated for impairment	4,591	[2]			4,547	[2]
Total	53,429				69,799
Mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	29,235			35,503
Home Equity Loans & Lines [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	24,194			29,085
Consumer & Other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans acquired with deteriorated credit quality	211	[1]			676	[1]
Collectively evaluated for impairment	45	[2]			30	[2]
Total	256		305	426	706		680	24
Covered loans and leases, Loans acquired with deteriorated credit quality	3,699	[1]			6,057	[1]
Collectively evaluated for impairment	2,722	[2]			2,349	[2]
Total	$ 6,421			$ 7,970	$ 8,406

[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.