GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)

12 Months Ended

Dec. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in Carrying Amount of Goodwill

The following table presents the changes in the carrying amount of goodwill:

(in thousands)	2018			2017
Balance as of January 1,	$	72,952		$	73,164
Purchase price adjustments to goodwill	—			(354		)
Translation adjustments	(94		)	142
Balance as of December 31,	$	72,858		$	72,952

Schedule of Amortizable Intangible Assets

Intangible assets are recorded at cost and amortized using the straight-line method over their estimated useful lives as follows:

		December 31, 2018
(in thousands)	Useful Lives	Cost		Accumulated Amortization			Net Book Value (1)
Client-related intangibles	4-10 years	$	63,115	$	(51,224	)	$	11,891
Technology	2-10 years	59,742		(50,398		)	9,344
Other	1 - 5 years	5,361		(5,361		)	—
		$	128,218	$	(106,983	)	$	21,235

⁽¹⁾ Included in other long-term assets.

		December 31, 2017
(in thousands)	Useful Lives	Cost		Accumulated Amortization			Net Book Value (1)
Client-related intangibles	4-10 years	$	63,164	$	(44,835	)	$	18,329
Technology	3-10 years	58,942		(45,372		)	13,570
Other	1 - 5 years	5,361		(5,361		)	—
		$	127,467	$	(95,568	)	$	31,899

⁽¹⁾ Included in other long-term assets.

Amortization Expense of Acquired Intangibles

Intangibles amortization was reflected in the Company’s consolidated statements of operations as follows:

(in thousands)	2018		2017		2016
Cost of revenue	$	5,027	$	5,103	$	5,986
Selling and marketing	6,416		7,235		7,145
General and administrative	—		—		277
	$	11,443	$	12,338	$	13,408

Estimated Future Amortization Expense Related to Intangible Assets

Future estimated amortization expense related to intangible assets:

(in thousands)	December 31, 2018
2019	$	5,946
2020	2,950
2021	2,627
2022	2,537
2023 and thereafter	7,175
	$	21,235