Goodwill and Identified Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2019

(in thousands):



	Video			Cable Access			Total
Balance as of December 31, 2017	$	182,012		$	60,815		$	242,827
Foreign currency translation adjustment	(2,173		)	(36		)	(2,209		)
Balance as of December 31, 2018	$	179,839		$	60,779		$	240,618
Foreign currency translation adjustment	(857		)	19			(838		)
Balance as of December 31, 2019	$	178,982		$	60,798		$	239,780

The following table provides a summary of the Company’s identified intangible assets (in thousands):



		December 31, 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	0.2	$	31,707	$	(30,757	)	$	950	$	31,707	$	(25,576	)	$	6,131
Customer relationships/contracts	1.2	44,577		(41,092		)	3,485		44,650		(38,146		)	6,504
Trademarks and tradenames	0.2	609		(583		)	26		623		(441		)	182
Maintenance agreements and related relationships	N/A	5,500		(5,500		)	—		5,500		(5,500		)	—
Order Backlog	N/A	3,085		(3,085		)	—		3,112		(3,112		)	—
Total identifiable intangibles		$	85,478	$	(81,017	)	$	4,461	$	85,592	$	(72,775	)	$	12,817

Amortization expense for the identifiable intangible assets was allocated as follows (in thousands):



	Year Ended December 31,
	2019		2018		2017
Included in cost of revenue	$	5,180	$	5,180	$	5,180
Included in operating expenses	3,139		3,187		3,142
Total amortization expense	$	8,319	$	8,367	$	8,322

The estimated future amortization expense of identifiable intangible assets with definite lives as of December 31, 2019 is as follows (in thousands):



	Cost of Revenue		Operating Expenses		Total
Year ended December 31,
2020	$	951	$	3,012	$	3,963
2021	—		498		498
Total future amortization expense	$	951	$	3,510	$	4,461