Property and Equipment

6 Months Ended

Jun. 30, 2021

Property Plant And Equipment [Abstract]

Property and Equipment

4. Property and Equipment

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

	June 30, 2021			December 31, 2020
Equipment	$	5,389		$	5,356
Furniture and fixtures		22			629
Leasehold improvements		200			896
Software		364			180
Total property and equipment–at cost		5,975			7,061
Less: Accumulated depreciation		(4,797	)		(5,935	)
Property and equipment, net	$	1,178		$	1,126

Total depreciation expense for three months ended June 30, 2021 and 2020, was $0.1 million and $0.4 million, respectively. Total depreciation expense for six months ended June 30, 2021 and 2020, was $0.3 million and $0.9 million, respectively.