Goodwill and Identified Intangible Assets (Tables)

6 Months Ended

Jul. 01, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

The following table presents goodwill by reportable segments (in thousands):



	Video		Cable Edge			Total
As of December 31, 2015	$	136,904	$	60,877		$	197,781
Preliminary estimate of goodwill from TVN acquisition	37,630		—			37,630
Foreign currency translation adjustment	26		(68		)	(42		)
As of July 1, 2016	$	174,560	$	60,809		$	235,369

Summary of Goodwill and Identified Intangible Assets

The following is a summary of intangible assets (in thousands):



		July 1, 2016							December 31, 2015
	Weighted Average Remaining Life (Years)	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Developed core technology	3.7	$	32,489	$	(12,695	)	$	19,794	$	10,987	$	(10,987	)	$	—
Customer relationships/contracts	4.4	47,286		(29,392		)	17,894		29,200		(25,752		)	3,448
Trademarks and trade names	3.7	603		(50		)	553		—		—			—
Maintenance agreements and related relationships	0.2	5,500		(5,309		)	191		5,500		(4,851		)	649
Order Backlog	0.2	3,617		(2,411		)	1,206		—		—			—
Total identifiable intangibles		$	89,495	$	(49,857	)	$	39,638	$	45,687	$	(41,590	)	$	4,097

Amortization Expense for Identifiable Purchased Intangible Assets

Amortization expense for the identifiable purchased intangible assets for the three and six months ended July 1, 2016 and July 3, 2015 was allocated as follows (in thousands):



	Three months ended				Six months ended
	July 1, 2016		July 3, 2015		July 1, 2016		July 3, 2015
Included in cost of revenue	$	1,307	$	86	$	1,725	$	547
Included in operating expenses	4,232		1,446		6,597		2,892
Total amortization expense	$	5,539	$	1,532	$	8,322	$	3,439

Estimated Future Amortization Expense of Purchased Intangible Assets

The estimated future amortization expense of purchased intangible assets with definite lives is as follows (in thousands):



	Cost of Revenue		Operating Expenses		Total
Year ended December 31,
2016 (remaining six months)	$	2,688	$	4,295	$	6,983
2017	5,376		3,768		9,144
2018	5,376		3,768		9,144
2019	5,376		3,768		9,144
2020	978		3,642		4,620
Thereafter	—		603		603
Total future amortization expense	$	19,794	$	19,844	$	39,638