Income Taxes - Schedule of Income Tax Provisions (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Income Tax Disclosure [Abstract]
Income before provision for income taxes	$ 2,263	$ 261	$ 2,168	$ 3,208
Provision for income taxes	$ (668)	$ (92)	$ (632)	$ (1,175)
Effective tax rate	29.50%	35.20%	29.20%	36.60%