Goodwill and Identified Intangible Assets (Tables)

3 Months Ended

Mar. 29, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

The changes in the carrying amount of goodwill for the three months ended March 29, 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	(786		)	16		(770		)
Balance as of March 29, 2019	$	179,053		$	60,795	$	239,848

Summary of Goodwill and Identified Intangible Assets

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



		March 29, 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	0.9	$	31,707	$	(26,871	)	$	4,836	$	31,707	$	(25,576	)	$	6,131
Customer relationships/contracts	1.9	44,583		(38,855		)	5,728		44,650		(38,146		)	6,504
Trademarks and trade names	0.9	610		(470		)	140		623		(441		)	182
Maintenance agreements and related relationships	n/a	5,500		(5,500		)	—		5,500		(5,500		)	—
Order backlog	n/a	3,087		(3,087		)	—		3,112		(3,112		)	—
Total identifiable intangibles		$	85,487	$	(74,783	)	$	10,704	$	85,592	$	(72,775	)	$	12,817

Amortization Expense for Identifiable Purchased Intangible Assets

Amortization expense for the identifiable purchased intangible assets for the three months ended March 29, 2019 and March 30, 2018 was allocated as follows (in thousands):



	Three months ended
	March 29, 2019		March 30, 2018
Included in cost of revenue	$	1,295	$	1,295
Included in operating expenses	788		804
Total amortization expense	$	2,083	$	2,099

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 nine months)	$	3,885	$	2,356	$	6,241
2020	951		3,014		3,965
2021	—		498		498
Total future amortization expense	$	4,836	$	5,868	$	10,704