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Stockholders' Equity (Details 3) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended	99 Months Ended
	Mar. 31, 2015	Mar. 31, 2015	Oct. 24, 2014	Mar. 29, 2007
Share Repurchase Program
Number of shares of outstanding common stock authorized to be acquired under a stock repurchase program	7.6us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased	7.6us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased	1.0us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased	1.0us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased
Number of shares of common stock repurchased	0us-gaap_TreasuryStockSharesAcquired	6.6us-gaap_TreasuryStockSharesAcquired
Average price (in dollars per share)		$ 11.30us-gaap_TreasuryStockAcquiredAverageCostPerShare

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- Details

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X

- Definition

The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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X

- Definition

Total cost of shares repurchased divided by the total number of shares repurchased.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 30

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655

+ Details

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- 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

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