Accrued Expenses - Schedule of Accrued Expenses (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Accrued Liabilities, Current [Abstract]
Taxes and other assessments	$ 3,112	$ 189
Compensation and benefits	2,492	1,036
Legal and professional fees	268	145
Consulting and other vendors	553	208
Interest and final payment fee	411	131
Deferred rent	278	46
Other	281	14
Total	$ 7,395	$ 1,769