Goodwill and Identified Intangible Assets (Tables)

6 Months Ended

Jun. 28, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

The changes in the carrying amount of goodwill for the six months ended June 28, 2019 were as follows (in thousands):



	Video			Cable Access			Total
Balance as of December 31, 2018	$	179,839		$	60,779		$	240,618
Foreign currency translation adjustment, net	(282		)	(1		)	(283		)
Balance as of June 28, 2019	$	179,557		$	60,778		$	240,335

Summary of Goodwill and Identified Intangible Assets

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



		June 28, 2019							December 31, 2018
	Weighted Average Remaining Life (Years)	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Developed core technology	0.7	$	31,708	$	(28,167	)	$	3,541	$	31,707	$	(25,576	)	$	6,131
Customer relationships/contracts	1.7	44,628		(39,632		)	4,996		44,650		(38,146		)	6,504
Trademarks and trade names	0.7	618		(515		)	103		623		(441		)	182
Maintenance agreements and related relationships	n/a	5,500		(5,500		)	—		5,500		(5,500		)	—
Order backlog	n/a	3,104		(3,104		)	—		3,112		(3,112		)	—
Total identifiable intangibles, net		$	85,558	$	(76,918	)	$	8,640	$	85,592	$	(72,775	)	$	12,817

Amortization Expense for Identifiable Purchased Intangible Assets

Amortization expense for the identifiable purchased intangible assets for the three and six months ended June 28, 2019 and June 29, 2018 was allocated as follows (in thousands):



	Three months ended				Six months ended
	June 28, 2019		June 29, 2018		June 28, 2019		June 29, 2018
Included in cost of revenue	$	1,295	$	1,295	$	2,590	$	2,590
Included in operating expenses	784		800		1,572		1,604
Total amortization expense	$	2,079	$	2,095	$	4,162	$	4,194

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,
2019 (remaining six months)	$	2,590	$	1,576	$	4,166
2020	951		3,023		3,974
2021	—		500		500
Total future amortization expense	$	3,541	$	5,099	$	8,640