Goodwill and Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets

The following table sets forth information regarding intangible assets (in thousands):

	March 31, 2019			December 31, 2018
Patents	$	847		$	847
Accumulated amortization		(289	)		(274	)
Intangible assets, net	$	558		$	573

Schedule of Estimated Amortization Expense for Intangible Assets

The following is a summary of estimated future amortization expense for intangible assets as of March 31, 2019 (in thousands):

Remainder of 2019	$	44
2020		58
2021		58
2022		58
2023		58
Thereafter		282
Total	$	558