Segment Information (Schedule of Long-lived Assets by Geographic Area) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 141,278	$ 171,527
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	64,986	77,812
Other Americas
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	958	1,144
EMEA
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	67,510	82,659
APAC
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 7,824	$ 9,912