Covered Assets and Indemnification Asset (Allowance And Recorded Investment By Covered Loan Portfolio) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013		Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012		Mar. 31, 2012	Dec. 31, 2011
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses, Acquired with Deteriorated Credit Quality	$ 11,226	[1]			$ 14,352	[1]
Collectively evaluated for impairment	692	[2]			1,180	[2]
Total	11,918		14,367	18,275	15,532		12,977	14,320
Covered loans and leases, Loans acquired with deteriorated credit quality	387,730	[1]			505,225	[1]
Financing Receivable Covered Collectively Evaluated For Impairment	21,271	[2]			25,352	[2]
Total	409,001			495,353	530,577
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses, Acquired with Deteriorated Credit Quality	6,648	[1]			8,662	[1]
Collectively evaluated for impairment	386	[2]			574	[2]
Total	7,034		8,871	12,129	9,236		7,461	8,939
Covered loans and leases, Loans acquired with deteriorated credit quality	329,044	[1]			424,547	[1]
Financing Receivable Covered Collectively Evaluated For Impairment	2,852	[2]			2,942	[2]
Total	331,896				427,489
Term & Multifamily [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	315,429			378,009
Construction & Development [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	7,931			11,711
Residential Development [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	8,536			9,794
Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses, Acquired with Deteriorated Credit Quality	3,691	[1]			4,785	[1]
Collectively evaluated for impairment	204	[2]			517	[2]
Total	3,895		4,512	4,980	5,302		4,547	3,964
Covered loans and leases, Loans acquired with deteriorated credit quality	17,799	[1]			28,141	[1]
Financing Receivable Covered Collectively Evaluated For Impairment	10,542	[2]			15,097	[2]
Total	28,341				43,238
Term [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	16,823			23,524
LOC & Other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	11,518			14,997
Residential [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses, Acquired with Deteriorated Credit Quality	752	[1]			694	[1]
Collectively evaluated for impairment	51	[2]			44	[2]
Total	803		808	804	738		664	991
Covered loans and leases, Loans acquired with deteriorated credit quality	38,887	[1]			48,838	[1]
Financing Receivable Covered Collectively Evaluated For Impairment	5,114	[2]			4,591	[2]
Total	44,001				53,429
Mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	23,304			27,825
Home Equity Loans & Lines [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	20,697			23,442
Consumer & Other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses, Acquired with Deteriorated Credit Quality	135	[1]			211	[1]
Collectively evaluated for impairment	51	[2]			45	[2]
Total	186		176	362	256		305	426
Covered loans and leases, Loans acquired with deteriorated credit quality	2,000	[1]			3,699	[1]
Financing Receivable Covered Collectively Evaluated For Impairment	2,763	[2]			2,722	[2]
Total	$ 4,763			$ 6,051	$ 6,421

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

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