Property and Equipment, Net - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Property Plant And Equipment [Line Items]
Retainage amount included in construction in progress	$ 500,000		$ 400,000
Depreciation and amortization	1,723,000	$ 1,323,000
Interest cost paid	300,000	300,000
Interest costs capitalized	100,000	0
Computer software development costs capitalized	1,700,000	800,000
Property and Equipment [Member]
Property Plant And Equipment [Line Items]
Depreciation and amortization	$ 2,500,000	$ 1,700,000