Property and Equipment, Net - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment [Abstract]
Depreciation expense	$ 13,400	$ 9,100	$ 7,900
Payment to acquire building	9,700
Payment for construction to expand building	$ 8,000
Lease expiration year, earliest	2017
Lease expiration year, latest	2025
Expected rental income, during 2017	$ 1,600
Expected rental income, during 2018	1,900
Expected rental income, during 2019	1,900
Expected rental income, during 2020	1,700
Expected rental income, during 2021	1,400
Expected rental income, thereafter	5,200
Rental income from third party tenants in 2016, 2015, and 2014	$ 1,700	$ 913	$ 945