Employee Benefit Plans - Narrative (Detail) (USD $)	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012
Compensation and Retirement Disclosure [Abstract]
Company contribution net of forfeitures	$ 557,000	$ 556,000
Deferred compensation liabilities	$ 1,638,334	$ 1,471,091

Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements payable beyond one year (or the operating cycle, if longer).

No definition available.

Name:	us-gaap_DeferredCompensationLiabilityClassifiedNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant