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Schedule of Measurement Dates (Detail)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Benefit Obligation
Defined Benefit Plan Disclosure [Line Items]
Measurement Dates	12/31/2013	12/31/2012
Fair Value Of Plan Assets
Defined Benefit Plan Disclosure [Line Items]
Measurement Dates	12/31/2013	12/31/2012

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- Details

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- Definition

The date(s) used to measure (at least the majority of) plan assets and benefit obligations for defined benefit pension and other postretirement benefit plans. Disclosure required by FAS 132R paragraph 5k prior to being amended by FAS 158.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration