GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)

9 Months Ended

Sep. 30, 2017

Changes in Carrying Amount of Goodwill

The changes in the carrying amount of goodwill for the nine months ended September 30, 2017 as follows:

(in thousands)
Balance as of January 1,	$	73,164
Purchase price adjustments to goodwill		(354	)
Currency translation adjustments		131
Balance as of September 30,	$	72,941

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:

(in thousands)	Range of Remaining Useful Lives		Cost		Accumulated Amortization			Net Book Value
September 30, 2017
Customer related intangibles		4-10 years	$	63,158	$	(43,205	)	$	19,953
Technology		7-10 years		58,942		(44,140	)		14,802
Other intangibles		—		5,361		(5,361	)		—
			$	127,461	$	(92,706	)	$	34,755
December 31, 2016
Customer related intangibles		4-10 years	$	63,091	$	(37,573	)	$	25,518
Technology		3-10 years		58,942		(40,269	)		18,673
Other intangibles		—		5,361		(5,361	)		—
			$	127,394	$	(83,203	)	$	44,191

Amortization Expense of Acquired Intangibles

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

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2017		2016		2017		2016
Cost of revenue	$	1,232	$	1,642	$	3,871	$	4,626
Selling and marketing		1,873		1,867		5,608		5,274
General and administrative		—		90		—		268
	$	3,105	$	3,599	$	9,479	$	10,168

Estimated Future Amortization Expense

Future estimated amortization expense related to intangible assets as of September 30, 2017 is as follows:

(in thousands)
Remainder of 2017	$	2,846
2018		11,347
2019		5,555
2020		2,659
2021		2,637
2022 and thereafter		9,711
	$	34,755