Goodwill and Intangible Assets - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2014
Business Acquisition [Line Items]
Goodwill impairment	$ 0
Amortization expense	248,000
Expected amortization expense in 2014	1,000,000
Expected amortization expense in 2015	1,000,000
Expected amortization expense in 2016	1,000,000
Expected amortization expense in 2017	1,000,000
Expected amortization expense in 2018	$ 1,000,000