Property and Equipment

9 Months Ended

Sep. 30, 2019

Property, Plant and Equipment [Abstract]

Property and Equipment

Property and equipment:

Property and equipment, summarized by major category, consist of the following as of:

	September 30, 2019		December 31, 2018
Machinery & equipment	$	5,635	$	5,635
Right of use, building lease	777		—
Computer equipment & software	437		406
Office furniture & equipment	161		155
Leasehold improvements	43		43
Idle equipment	679		679
Total	7,732		6,918
Less accumulated depreciation and amortization	(4,019)		(3,846)
Total property and equipment, net	$	3,713	$	3,072

Depreciation expense for the three-month periods ended September 30, 2019 and September 30, 2018, was approximately $0.08 million and $0.2 million, respectively. Depreciation expense for the nine-month periods ended September 30, 2019 and September 30, 2018, was approximately $0.2 million and $0.7 million, respectively.