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Derivative Instruments Narrative (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014
Derivative Instruments [Abstract]
Derivative, Notional Amount	$ 45.0invest_DerivativeNotionalAmount

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- Details

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- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 12

-Section 13

-Sentence Column B

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