GOODWILL AND OTHER INTANGIBLES (Tables)

6 Months Ended

Jun. 30, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in carrying amount of goodwill

Change in goodwill:

	Six Months Ended June 30,
(in thousands)	2021		2020
January 1,	$	79,231	$	79,039
Acquisition	2,701		—
Currency translation adjustments	241		(364)
June 30,	$	82,173	$	78,675

Schedule of amortizable intangible assets

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

		June 30, 2021
(in thousands)	Useful Lives	Cost		Accumulated Amortization		Net Book Value (1)
Client-related	4-10 years	$	63,186	$	(56,638)	$	6,548
Technology	2-10 years	67,142		(57,644)		9,498
Other	1-5 years	5,361		(5,361)		—
		$	135,689	$	(119,643)	$	16,046

(1) Included in other long-term assets.

		December 31, 2020
(in thousands)	Useful Lives	Cost		Accumulated Amortization		Net Book Value (1)
Client-related	4-10 years	$	63,168	$	(55,877)	$	7,291
Technology	2-10 years	64,843		(56,386)		8,457
Other	1-5 years	5,361		(5,361)		—
		$	133,372	$	(117,624)	$	15,748

(1) Included in other long-term assets.

Amortization expense of acquired intangibles

Amortization of intangible assets:

	Three Months Ended June 30,				Six Months Ended June 30,
(in thousands)	2021		2020		2021		2020
Cost of revenue	$	629	$	647	$	1,258	$	1,294
Selling and marketing	373		370		746		740
	$	1,002	$	1,017	$	2,004	$	2,034

Estimated future amortization expense related to intangible assets

Future estimated intangibles assets amortization:

(in thousands)	June 30, 2021
2021	$	1,983
2022	3,886
2023	3,618
2024	2,849
2025	2,509
2026 and thereafter	1,201
	$	16,046