Property and Equipment (Tables)

3 Months Ended

Mar. 31, 2020

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

Property and equipment as of December 31, 2019 and 2018 consists of the following (in thousands except years):

	As of December 31,				Estimated Useful Life (in years)
	2019		2018
Machinery and equipment	$	14,892	$	14,551	5
Computer equipment and software	876		787		3
Furniture and fixtures	186		185		7
Leasehold improvements (1)	4,954		4,952		7
Construction in progress	6		263
Property and equipment	20,914		20,738
Less: accumulated depreciation and amortization	(19,144)		(18,606)
Property and equipment, net	$	1,770	$	2,132

(1) Leasehold improvements are amortized on a straight-line basis over the shorter of their estimated useful lives or the related remaining lease term.