Income Taxes - Schedule of Income Tax Provisions (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Tax Disclosure [Abstract]
Income before provision for income taxes	$ 1,672	$ 856	$ 4,880	$ 3,036
Provision for income taxes	$ (599)	$ (257)	$ (1,774)	$ (284)
Effective tax rate	35.80%	30.00%	36.40%	9.40%