Goodwill and Intangible Assets, Net

3 Months Ended

Mar. 31, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets, Net

ngible Assets, Net

Intangible assets consist primarily of developed technology and patent licenses from business combinations. Acquired intangibles are amortized on a straight-line basis over the respective estimated useful lives of the assets.

The carrying values of intangible assets are as follows (in thousands, except for years):

					March 31, 2020
	Weighted Average Life (Years)	Weighted Average Remaining Life (Years)	Cost		Accumulated Amortization			Net Book Value
Developed technology	4.6	2.5	$	26,356	$	(11,561	)	$	14,795
Patent licenses	14.0	4.4	1,387		(947		)	440
Total intangibles subject to amortization			$	27,743	$	(12,508	)	15,235
Intangible assets not subject to amortization								40
Total intangible assets, net								$	15,275
					December 31, 2019
	Weighted Average Life (Years)	Weighted Average Remaining Life (Years)	Cost		Accumulated Amortization			Net Book Value
Developed technology	4.6	2.7	$	26,356	$	(10,066	)	$	16,290
Patent Licenses	14.0	4.7	1,387		(922		)	465
Total intangibles subject to amortization			$	27,743	$	(10,988	)	16,755
Intangible assets not subject to amortization								40
Total intangible assets, net								$	16,795

Intangible asset amortization expense was $1.5 million for each of the three months ended March 31, 2020 and 2019.

As of March 31, 2020, the Company expects amortization expense in future periods to be as follows (in thousands):

	Amortization Expense
2020 (remaining nine months)	$	4,561
2021	6,081
2022	4,427
2023	100
2024	66
Total expected future amortization expense	$	15,235