Leases - Schedule of Lease Expenses (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019
Leases [Abstract]
Operating lease expense	$ 1,712	$ 5,147
Variable lease costs	404	1,183
Short-term lease expense	195	595
Sublease income	(119)	(332)
Total operating lease expense	$ 2,192	$ 6,593