Regulatory Capital Requirements - Additional Information (Detail)	Dec. 31, 2013
Advanced Approach Methodology
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Ratio to qualify as well capitalized ratio	11.60%
Standardized Approach
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Ratio to qualify as well capitalized ratio	11.10%

Total Capital divided by risk weighted assets as defined in the regulations.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 505

-Section 50

-Paragraph 1H

-Subparagraph (c)(2)

-URI http://asc.fasb.org/extlink&oid=7881181&loc=d3e65071-112826

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 505

-Section 50

-Paragraph 1

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=7881181&loc=SL5958568-112826

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant