Loans Receivable (Recorded Investment in Covered Loan Pools) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Financing Receivable, Impaired [Line Items]
Allowance for loan and lease losses, covered	$ 64,245	$ 52,729	$ 54,124
Covered Loan [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal	293,588	338,257
Recorded Investment	204,253	173,286
Allowance for loan and lease losses, covered	64,245	52,729
Coverage	31.00%	30.00%
Loans Secured by 1-4 properties \| Covered Loan [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal	134,579	52,142
Recorded Investment	106,116	38,179
Allowance for loan and lease losses, covered	15,522	12,495
Coverage	15.00%	33.00%
Construction and development secured by multi-family properties [Member] \| Covered Loan [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal	57,123	66,037
Recorded Investment	19,562	17,304
Allowance for loan and lease losses, covered	10,724	6,866
Coverage	55.00%	40.00%
Other Commercial and Industrial[Member] \| Covered Loan [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal	93,894	209,566
Recorded Investment	74,069	111,946
Allowance for loan and lease losses, covered	37,610	32,753
Coverage	51.00%	29.00%
Consumer Loan [Member] \| Covered Loan [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal	7,992	10,512
Recorded Investment	4,506	5,857
Allowance for loan and lease losses, covered	$ 389	$ 615
Coverage	9.00%	11.00%

The percentage represents the coverage of the allowance for loan and lease losses to loans.

No definition available.

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- Details

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- Definition

Amount of investment in impaired financing receivables for which there is a related allowance for credit losses.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 14A

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953550-111524

+ Details

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- Definition

Unpaid principal balance of impaired financing receivables for which there is a related allowance for credit losses.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (a)(4)

-URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524

+ Details

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- Definition

Amount of allowance for loan and lease losses covered by loss sharing agreements.

+ References

No definition available.

+ Details

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- Details

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