Balance Sheet Components (Schedule of Property and Equipment, Net) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Property and equipment, Gross		$ 432,256	$ 297,476
Accumulated depreciation		(187,999)	(131,862)
Property and equipment, net		244,257	165,614
Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, Gross		83,961	68,526
Land & Building [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, Gross		$ 80,832	68,607
Estimated useful life (years)	[1]	50 years
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, Gross		$ 83,810	20,732
Software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, Gross		$ 179,211	$ 139,611
Estimated useful life (years)		3 years
Cars [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, Gross		$ 4,442
Estimated useful life (years)		3 years
Minimum [Member] | Equipment [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life (years)		3 years
Minimum [Member] | Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life (years)		3 years
Maximum [Member] | Equipment [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life (years)		5 years
Maximum [Member] | Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life (years)		5 years

[1] Estimated useful life attributable to “Buildings”