Prepaid Expense and Other Current Assets - Schedule of Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract]
Prepaid expenses	$ 6,285	$ 5,134
Reimbursement receivable	3,160	337
State tax receivable	347	427
Other current assets	10	19
Total	$ 9,802	$ 5,917