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Defined Benefit Plans Additional Information (Details) (USD $)	3 Months Ended
	Mar. 31, 2015
Compensation and Retirement Disclosure [Abstract]
Defined Benefit Plan, Expected Contributions in Current Fiscal Year	$ 0us-gaap_DefinedBenefitPlanExpectedContributionsInCurrentFiscalYear

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- Definition

Amount of the employer's best estimate of contributions expected to be paid to the plan in the current fiscal period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 6

-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e2709-114920

+ Details

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