Property and Equipment, Net

6 Months Ended

12 Months Ended

Jun. 30, 2022

Dec. 31, 2021

Property, Plant and Equipment [Abstract]

Property and Equipment, Net

(5) Property and Equipment, Net

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

	June 30, 2022			December 31, 2021
Machinery and equipment	$	5,996		$	5,568
Furniture and fixtures		182			182
Computer equipment		1,011			1,008
Computer software		35			35
Leasehold improvements		349			349
Total property and equipment		7,573			7,142
Less: accumulated depreciation and amortization		(5,706	)		(5,234	)
Total property and equipment, net	$	1,867		$	1,908

Depreciation and amortization expense for the three and six months ended June 30, 2022 was $0.2 million and $0.5 million, respectively. Depreciation and amortization expense for the three and six months ended June 30, 2021was $0.2 million and $0.5 million, respectively.

(4) Property and Equipment, net

Property and equipment, net consists of the following (in thousands):

	As of December 31,
	2021			2020
Machinery and equipment	$	5,568		$	5,555
Furniture and fixtures		182			182
Computer equipment		1,008			973
Computer software		35			36
Leasehold improvements		349			349
Total property and equipment		7,142			7,095
Less: accumulated depreciation and amortization		(5,234	)		(4,286	)
Total property and equipment, net	$	1,908		$	2,809

Depreciation and amortization expense totaled $0.9 million and $1.2 million for the years ended December 31, 2021 and 2020, respectively.