Other Intangible Assets, Net (Tables)

12 Months Ended

Dec. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Finite-Lived Intangible Assets [Table Text Block]

	Weighted average remaining useful life (years)	December 31,
		2018		2019
Original amounts:
Customer relationships	7.1	$	21,980	$	23,409
Technology	4.0		71,428		52,555
Patent	4.5		1,280		1,389
			94,688		77,353
Accumulated amortization:
Customer relationships			11,705		14,673
Technology			39,597		27,891
Patent			566		754
			51,868		43,318
Other intangible assets, net		$	42,820	$	34,035

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

For the year ended December 31,
2020	$	9,624
2021		8,613
2022		5,881
2023		5,550
2024		2,707
2025 and thereafter		1,660
	$	34,035