Property and Equipment, Net (Tables)

12 Months Ended

Dec. 31, 2019

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment [Table Text Block]

	December 31,
	2018		2019
Cost:
Computers and peripheral equipment	$	32,349	$	41,648
Office furniture and equipment		5,602		8,618
Buildings and leasehold improvements		6,472		9,405
		44,423		59,671
Accumulated depreciation:
Computers and peripheral equipment		29,328		35,841
Office furniture and equipment		4,013		4,440
Buildings and leasehold improvements		2,567		2,789
		35,908		43,070
Depreciated cost	$	8,515	$	16,601