Leases (Lease Cost) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating lease cost		$ 10,482	$ 11,945
Short-term Lease, Cost	[1]	1,702	1,111
Total lease cost	[2]	$ 12,184	$ 13,056

[1] Includes variable lease cost, which was immaterial.

[2] Included in cost of revenue, sales and marketing, research and development and general and administration in the Company’s consolidated statement of operations.