Accrued Expenses and Other Current Liabilities (Tables)

12 Months Ended

Dec. 31, 2017

Payables And Accruals [Abstract]

Summary of Accrued Expenses

Accrued expenses consisted of the following (in thousands):

	December, 31
	2017		2016
Payroll and employee-related costs	$	19,630	$	13,044
Professional services		7,935		2,221
Property and equipment purchases		688		115
Other		8,492		5,198
Total accrued expenses and other current liabilities	$	36,745	$	20,578