Leases - Schedule of Lease Expenses (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2019
Leases [Abstract]
Operating lease expense	$ 1,667	$ 3,435
Variable lease costs	397	779
Short term lease expense	220	400
Sublease income	(107)	(213)
Total operating lease expense	$ 2,177	$ 4,401