GOODWILL AND INTANGIBLE ASSETS: (Tables)

12 Months Ended

Dec. 31, 2012

GOODWILL AND INTANGIBLE ASSETS:

Schedule of changes in the carrying amount of goodwill

December 31, 2011	$	132,885
Adjustments		—
December 31, 2012	$	132,885

Schedule of carrying amounts of intangible assets

The carrying amounts of intangible assets as of December 31, 2012 are as follows:

	Gross Carrying Value		Accumulated Amortization			Net Carrying Value
	(in thousands)
Licensed technology	$	946	$	(946	)	$	—
Developed technology		23,132		(14,695	)		8,437
Customer relationships		10,956		(3,328	)		7,628
Customer contract		1,529		(1,460	)		69
Total intangible assets	$	36,563	$	(20,429	)	$	16,134

        The carrying amounts of intangible assets as of December 31, 2011 are as follows:

	Gross Carrying Value		Accumulated Amortization			Net Carrying Value
	(in thousands)
Licensed technology	$	946	$	(874	)	$	72
Developed technology		22,063		(7,174	)		14,889
Customer relationships		10,956		(1,571	)		9,385
Customer contract		1,529		(1,287	)		242
Backlog		435		(435	)		—
Total amortizable intangible assets	$	35,929	$	(11,341	)	$	24,588
IPR&D		1,069		—			1,069
Total intangible assets	$	36,998	$	(11,341	)	$	25,657

Schedule of estimated future amortization expense from amortizable intangible assets

The estimated future amortization expense from amortizable intangible assets is as follows (in thousands):

2013	$	9,679
2014		3,824
2015		1,060
2016		786
2017 and thereafter		785
	$	16,134