Leases - Schedule of Components of Lease Expense (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Lease Cost [Abstract]
Operating lease expense		$ 1,069		$ 2,802
Short-term lease expense	[1]	138		690
Total		1,207	$ 900	3,492	$ 2,600
Less: Sublease income		(33)		(45)
Total lease expense		$ 1,174		$ 3,447

[1] Short-term lease expense includes all leases with lease terms ranging from less than one month to one year.