INTANGIBLE ASSETS AND GOODWILL (Tables)

12 Months Ended

Dec. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Amortization of identifiable intangible assets

Amortizing identifiable intangible assets related to our acquisitions or capitalized costs of internally developed or externally purchased software that form the basis for our products consisted of the following at December 31, 2018 and 2017 (in thousands):

	December 31,
	2018							2017
	Gross		Accumulated Amortization			Net		Gross		Accumulated Amortization			Net
Completed technologies and patents	$	58,246	$	(54,508	)	$	3,738	$	58,609	$	(47,072	)	$	11,537
Customer relationships	54,986		(54,292		)	694		54,946		(52,801		)	2,145
Trade names	1,346		(1,346		)	—		1,346		(1,346		)	—
Capitalized software costs	4,911		(4,911		)	—		4,911		(4,911		)	—
Total	$	119,489	$	(115,057	)	$	4,432	$	119,812	$	(106,130	)	$	13,682