Note 6 - Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2019

Notes Tables

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

	December 31, 2019						December 31, 2018
	Gross		Accumulated Amortization		Net		Gross		Accumulated Amortization		Net
Developed technology	$	186,800	$	123,365	$	63,435	$	186,800	$	86,378	$	100,422
Customer relationships		70,540		31,409		39,131		70,540		21,681		48,859
Trade name		2,310		1,766		544		2,310		1,350		960
Patents		1,579		1,010		569		1,579		881		698
Software		74,022		9,411		64,611		61,406		31,898		29,508
	$	335,251	$	166,961	$	168,290	$	322,635	$	142,188	$	180,447

Finite-lived Intangible Assets Amortization Expense [Table Text Block]

	Year Ended December 31,
	2019		2018		2017
Cost of revenue	$	36,987	$	32,845	$	28,502
Research and development		22,305		19,311		18,352
Sales and marketing		9,728		9,727		9,727
General and administrative		545		609		643
	$	69,565	$	62,492	$	57,224

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

2020	$	56,558
2021		52,469
2022		42,656
2023		15,769
2024		672
Thereafter		166
	$	168,290

Finite Lived Intangible Assets Remaining Amortization Period [Table Text Block]

Developed technology	3.0
Customer relationship	4.0
Trade name	2.0
Patents	7.6
Software	2.7