Related Party Transactions - Additional Information (Detail) (USD $)	12 Months Ended
Dec. 31, 2013 SecurityLoan	Dec. 31, 2012 SecurityLoan
Related Party Transaction [Line Items]
Loans outstanding to directors, executive officers and their affiliates	$ 7,277,000	$ 7,858,000
Maximum limit of percent of shareholders equity related party loans to identified as impaired	5.00%	5.00%
Related party deposits	12,155,000	11,552,000
Number of related party loans not treated as impaired	0	0
Directors and Officers Liability Insurance [Member]
Related Party Transaction [Line Items]
Loans outstanding to directors, executive officers and their affiliates	$ 7,277,000	$ 7,858,000

For an unclassified balance sheet, reflects the carrying amount of unpaid loan amounts due from related parties at the balance sheet date.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 850

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.7(e))

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 7

-Subparagraph e

-Article 9

Name:	us-gaap_LoansAndLeasesReceivableRelatedParties
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant