Goodwill and Intangible Assets - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 161,000	$ 161,000
Increase (decrease) in cost of intangible assets	$ 600,000
Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets basis over estimated useful lives	1 year
Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets basis over estimated useful lives	8 years