Stock-Based Compensation - Summary of Non-Vested Options for Non-Qualified Stock Option Awards (Detail) (Non-Qualified Stock Option Award [Member], USD $)	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012
Non-Qualified Stock Option Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-Vested Shares, beginning balance	43,334	50,000
Granted	51,000	10,000
Vested	(19,634)	(16,666)
Non-Vested Shares, ending balance	74,700	43,334
Fair Value of Shares Vested	$ (568,875)	$ (481,647)

Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

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)

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

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration