Restricted Shares Issued in Conjunction with Stock Plan (Detail) (Restricted Shares, USD $)	12 Months Ended
Dec. 31, 2013
Period 1
Class of Stock [Line Items]
Issuance Date	Feb. 09, 2011
Shares	24,330
Aggregate Market Value	$ 600,000
Period 2
Class of Stock [Line Items]
Issuance Date	Feb. 03, 2012
Shares	25,600
Aggregate Market Value	$ 700,000
Period 3
Class of Stock [Line Items]
Issuance Date	Feb. 04, 2013
Shares	21,240
Aggregate Market Value	$ 600,000

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)(iii)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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