Share Repurchase Program (Details) (USD $) In Millions, unless otherwise specified	0 Months Ended	3 Months Ended
Aug. 20, 2014	Mar. 31, 2015	Dec. 31, 2014
Share Repurchase Program [Abstract]
Stock Repurchase Program, Additional Authorized Amount	$ 25.0
Share Repurchase Program, Authorized Amount		145.0
Remaining Authorized Repurchase Amount		29.0
Stock Repurchased During Period, Shares		0.1
Stock Repurchased During Period, Value		1.7
Share Repurchases Pending Cash Settlement Amount			$ 0.2

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The amount of share repurchases pending cash settlement.

+ References

No definition available.

+ Details

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- Definition

The additional amount authorized by an entity's Board of Directors under a stock repurchase plan.

+ References

No definition available.

+ Details

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- Definition

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

+ 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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- Definition

Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

+ References

+ Details

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- Definition

Amount of stock repurchase plan authorized.

+ References

No definition available.

+ Details

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- Definition

Amount remaining of a stock repurchase plan authorized.

+ References

No definition available.

+ Details

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