Leases - Schedule of Rent Expenses (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019
Leases [Abstract]
Operating lease expense	$ 764	$ 2,331
Variable and short-term lease expense	36	223
Rent expense	$ 800	$ 2,554