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Loans - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2014 Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of loan portfolio segments	3

X

- Definition

Number Of Loan Portfolio Segments

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Details

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