Property and Equipment

12 Months Ended

Dec. 31, 2020

Property and Equipment

Property and Equipment

(4) Property and Equipment

Property and equipment consisted of the following (in thousands):

		December 31,
Asset description	Estimated useful lives	2020		2019
Lab equipment	5 Years	$	2,304	$	2,250
Furniture and fixtures	5 Years		118		112
Computer equipment and software	3 Years		577		508
Leasehold improvements	Lesser of useful life or lease term		1,360		1,328
Total			4,359		4,198
Less accumulated depreciation and amortization			(3,733)		(3,521)
Property and equipment, net		$	626	$	677

The cost of property and equipment at both December 31, 2020 and 2019 includes $0.2 million of equipment located at Aroa. Depreciation expense was $0.2 million,  $0.3 million and $0.5 million for the years ended December 31, 2020, 2019 and 2018, respectively.