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Stockholders' Equity (Details 3) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	6 Months Ended	102 Months Ended
	Jun. 30, 2015	Jun. 30, 2015	Mar. 29, 2007
Share Repurchase Program
Number of shares of outstanding common stock authorized to be acquired under a stock repurchase program	7.6	7.6	1.0
Number of shares of common stock repurchased	0.1	6.6
Average price (in dollars per share)	$ 20.88	$ 11.40
Repurchased carrying basis	$ 1.5	$ 1.5

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- Definition

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

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- 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

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Cost basis for treasury stock acquired for purposes other than retirement.

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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 505



-SubTopic 30



-Section 45



-Paragraph 1



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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 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 2: 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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-Publisher SEC



-Name Regulation S-X (SX)



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-Section 04



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