Goodwill and Intangible Assets, Net - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Goodwill And Intangible Assets Disclosure [Abstract]
Amortization of intangible assets	$ 1,051	$ 655	$ 1,593	$ 1,118