Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets

Our intangible assets consist of the following:

	December 31,
	2020		2019
	(in thousands)
Intellectual property	$	700	$	700
Less:  Accumulated amortization	(662)		(428)
Total, net	$	38	$	272

Schedule of Amortization Expense

Amortization expense recorded in cost of sales is as follows:

	Years Ended December 31,
	2020		2019		2018
	(in thousands)
Amortization expense	$	234	$	234	$	194