Property and equipment

3 Months Ended

Mar. 31, 2021

Property Plant And Equipment [Abstract]

Property and equipment

3. Property and equipment

The components of property and equipment as of March 31, 2021 and December 31, 2020 were as follows:

	March 31, 2021			December 31, 2020
Leasehold improvements	$	5,660		$	5,655
Lab equipment		5,145			4,833
Computer equipment		978			942
Furniture and office equipment		459			459
Vehicles		296			296
Asset under construction		19			65
Total, at cost		12,557			12,250
Accumulated depreciation		(4,984	)		(4,243	)
Total, net	$	7,573		$	8,007

Depreciation expense was $741,000 for the three months ended March 31, 2021, and $331,000 for the three months ended March 31, 2020, respectively. Finance leases are also included in property and equipment as vehicles on the condensed consolidated balance sheets (Note 6).