Property and Equipment

6 Months Ended

Jun. 30, 2022

Property, Plant and Equipment [Abstract]

Property and Equipment

5. PROPERTY AND EQUIPMENT

Property and equipment consist of the following:

	June 30,		December 31,
	2022		2021
	(in thousands)
Leasehold improvements	$	6,651	$	6,512
Machinery and equipment		38		922
Furniture and fixtures		941		983
Research and development equipment		6,317		4,712
Computer hardware and software		1,733		1,708
Construction in progress		47		382
Subtotal		15,727		15,219
Less: Accumulated depreciation		5,870		4,345
Property and equipment, net	$	9,857	$	10,874

Depreciation expense for the three and six months ended June 30, 2022, was approximately $0.8 million and $1.6 million, respectively. Depreciation expense for the three and six months ended June 30, 2021, was approximately $0.7 million and $1.2 million, respectively.