Fixed Assets - Schedule of Fixed Assets (Detail) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Less accumulated depreciation and amortization	$ (2,646)	$ (1,978)
Total	12,062	11,974
Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	1,680	1,258
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	2,412	2,382
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	$ 10,616	$ 10,312