Lease - Schedule of Lease Expenses (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019
Leases [Abstract]
Operating lease cost	$ 1,948	$ 6,819
Short-term lease cost	580	1,140
Total lease costs	$ 2,528	$ 7,959