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Fair Value and Interest Rate Risk - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2013
Fair Value Disclosures [Abstract]
Short-term borrowings	90 days

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- Definition

Maturing period of borrowings under short term repurchase agreements and other short term borrowings.

+ References

No definition available.

+ Details

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Period Type:	duration

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- Details

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