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Loans Receivable (excluding Covered Loans) - Schedule of Loans Acquired for Which Payment Collection Not Probable (Details) (Western National Bank, USD $) In Thousands, unless otherwise specified	Dec. 16, 2011
Western National Bank
Business Acquisition [Line Items]
Contractually required payments of interest and principal	$ 171,515
Nonaccretable difference	(56,440)
Cash flows expected to be collected	115,075	[1]
Accretable yield	(21,384)
Carrying value of acquired loans	$ 93,691
[1] Represents undiscounted expected principal and interest cash flows

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Fair value at acquisition of acquired commercial loans not accounted for as debt securities with evidence of deterioration of credit quality.

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-Name Accounting Standards Codification

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Amount of cash flows expected to be collected at acquisition of acquired commercial loans not accounted for as debt securities with evidence of deterioration of credit quality.

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Amount of contractually required payments receivable at acquisition of acquired commercial loans not accounted for as debt securities with evidence of deterioration of credit quality.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

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-URI http://asc.fasb.org/extlink&oid=27045933&loc=d3e13503-111538



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