Leases - General (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2019 USD ($) ft² Option
Lessee, Lease, Description [Line Items]
Area of leased space	170,000
Number of building leased	2
Tenant improvement allowance | $	$ 15,721
Number of options to extend | Option	2
Option to extend	true
Renewal term	5 years
Ireland
Lessee, Lease, Description [Line Items]
Area of leased space	6,100
Option to terminate	true