GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)

6 Months Ended

Jun. 30, 2018

Change in Carrying Amount of Goodwill

The change in the carrying amount of goodwill was as follows:

(in thousands)	Six Months Ended              June 30,
	2018
Balance as of January 1,	$	72,952
Currency translation adjustments		(41)
Balance as of June 30,	$	72,911

Schedule of Amortizable Intangible Assets

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

		June 30, 2018
(in thousands)	Useful Lives	Cost	Accumulated Amortization	Net Book Value(1)
Client-related intangibles	9-10 years	$                63,143	$                 (48,033)	$                 15,110
Technology	7-10 years	58,942	(47,835)	11,107
Other intangibles	—	5,361	(5,361)	—
		$                  127,446	$                  (101,229)	$                    26,217

  ⁽¹⁾ Included in other long-term assets in the unaudited condensed consolidated balance sheets.

			December 31, 2017
(in thousands)	Useful Lives		Cost		Accumulated Amortization		Net Book Value(1)
Client-related intangibles		9-10 years	$	63,164	$	(44,835)	$	18,329
Technology		7-10 years		58,942		(45,372)		13,570
Other intangibles		—		5,361		(5,361)		—
			$	127,467	$	(95,568)	$	31,899

  ⁽¹⁾ Included in other long-term assets in the unaudited condensed consolidated balance sheets.

Amortization of Intangible Assets

Amortization of intangible assets is reflected in the Company’s unaudited condensed consolidated statements of operations as follows:

(in thousands)	Three Months Ended              June 30,				Six Months Ended              June 30,
	2018		2017		2018		2017
Cost of revenue	$	1,231	$	1,305	$	2,463	$	2,639
Selling and marketing		1,605		1,869		3,210		3,735
	$	2,836	$	3,174	$	5,673	$	6,374