Intangible Assets

3 Months Ended

Mar. 31, 2019

Intangible Assets, Net (Excluding Goodwill) [Abstract]

Intangible Assets, net

The following table summarizes the Company’s intangible assets as of March 31, 2019 and December 31, 2018:



	Estimated Useful Life (Years)	Gross Carrying Amount at December 31, 2018		Accumulated Amortization		Net Book Value at March 31, 2019
Developed technology	13	$	18,800	$	1,205	$	17,595
Customer relationships	1	270		225		45
		$	19,070	$	1,430	$	17,640

The Company uses the straight-line method to determine the amortization expense for its definite lived intangible assets. The weighted-average remaining useful life for the intangible assets is 12.1 years. Amortization expense related to the purchased intangible assets was $430 for the three months ended March 31, 2019. The table below reflects the future estimated amortization expense for amortizable intangible assets as of March 31, 2019.




Remainder of 2019	$	1,130
2020	1,446
2021	1,446
2022	1,446
2023	1,446
Thereafter	10,726
Total	$	17,640