Stockholders' Equity (Details Textuals) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Shares, Outstanding	103,022,017us-gaap_SharesOutstanding	45,822,834us-gaap_SharesOutstanding	37,420,909us-gaap_SharesOutstanding	37,254,318us-gaap_SharesOutstanding
Treasury Stock, Shares, Acquired	493,890us-gaap_TreasuryStockSharesAcquired	351,640us-gaap_TreasuryStockSharesAcquired	63,681us-gaap_TreasuryStockSharesAcquired
Capitalsource, Inc. [Member]
Expiration of Dividend Reinvestment Program	Apr. 30, 2015
Proceeds from (Repurchase of) Equity	0
Repurchased common stock from dividend reinvestment program	2,583

Expiration of Dividend Reinvestment Program

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- Definition

Repurchased common stock from dividend reinvestment program

+ References

No definition available.

+ Details

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- Definition

The net cash inflow or outflow resulting from the entity's share transaction.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 15

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585

+ Details

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- Definition

Number of shares issued which are neither cancelled nor held in the treasury.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Number of shares that have been repurchased during the period and are being held in treasury.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29, 30

-Article 5

+ Details

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- Details

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