GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)

12 Months Ended

Dec. 31, 2015

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


	Year Ended December 31,
(in thousands)	2015			2014			2013
Balance as of January 1,	$	46,860		$	43,469		$	20,451
Purchase price adjustments to goodwill retroactively applied ⁽¹⁾		—			—			6,006
Goodwill acquired during the year		—			3,431			17,012
Translation adjustments		(84	)		(40	)		—

Balance as of December 31,	$	46,776		$	46,860		$	43,469

⁽¹⁾	The purchase price adjustments identified during 2014 have been retroactively applied as of December 31, 2013.

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


*(in thousands)*	Range of Useful Lives		Cost		Accumulated Amortization			Net book value
December 31, 2015
Customer related intangibles		4-9 years	$	49,546	$	(30,465	)	$	19,081
Technology		3-9 years		48,342		(34,282	)		14,060
Other intangibles		3 years		5,361		(5,084	)		277

Total			$	103,249	$	(69,831	)	$	33,418

December 31, 2014
Customer related intangibles		4-9 years	$	49,590	$	(24,338	)	$	25,252
Technology		3-9 years		48,342		(28,890	)		19,452
Other intangibles		1-3 years		5,361		(4,401	)		960

Total			$	103,293	$	(57,629	)	$	45,664

Amortization expense of acquired intangibles was reflected in the Company’s consolidated statements of operations as follows:

As of December 31, 2015, future estimated amortization expense is as follows:


(in thousands)	Future estimated amortization expense
2016	$	11,517
2017		9,818
2018		8,819
2019		3,027
2020 and thereafter		237

	$	33,418