GOODWILL AND INTANGIBLE ASSETS: (Tables)

3 Months Ended

Mar. 31, 2015

GOODWILL AND INTANGIBLE ASSETS:

Schedule of changes in the carrying amount of goodwill

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

Balance as of December 31, 2014	$	200,743
Adjustments	—
Balance as of March 31, 2015	$	200,743

Schedule of carrying amounts of intangible assets

The carrying amounts of intangible assets as of March 31, 2015 were as follows:

	Gross  Carrying  Value		Accumulated  Amortization			Net  Carrying  Value
	(in thousands)
Licensed technology	$	2,344	$	(1,054	)	$	1,290
Developed technology	56,064		(33,768		)	22,296
Customer relationships	13,376		(11,018		)	2,358
Total amortizable intangible assets	$	71,784	$	(45,840	)	$	25,944
IPR&D	13,764		—			13,764
Total intangible assets	$	85,548	$	(45,840	)	$	39,708

The carrying amounts of intangible assets as of December 31, 2014 were as follows:

	Gross  Carrying  Value		Accumulated  Amortization			Net  Carrying  Value
	(in thousands)
Licensed technology	$	2,344	$	(917	)	$	1,427
Developed technology	56,064		(32,130		)	23,934
Customer relationships	13,376		(10,434		)	2,942
Total amortizable intangible assets	$	71,784	$	(43,481	)	$	28,303
IPR&D	13,764		—			13,764
Total intangible assets	$	85,548	$	(43,481	)	$	42,067

Schedule of estimated future amortization expense from amortizable intangible assets

The estimated future amortization expenses from amortizable intangible assets are as follows (in thousands):

Remaining nine months of 2015	$	5,648
2016	7,194
2017	7,128
2018	4,148
2019	779
2020 and thereafter	1,047
	$	25,944