Property and Equipment

12 Months Ended

Dec. 31, 2020

Property, Plant and Equipment [Abstract]

Property and Equipment

Property and equipment:

Property and equipment, summarized by major category, consist of the following as of December 31:

	2020		2019
Machinery & equipment	$	4,683	$	5,635
Right of use, building and lease	471		720
Computer equipment & software	272		437
Office furniture & equipment	174		174
Leasehold improvements	43		43
Idle equipment	679		679
Construction in progress	119		—
Total	6,441		7,688
Less accumulated depreciation	(5,023)		(5,613)
Total property, plant & equipment, net	$	1,418	$	2,075

Depreciation expense for years ended December 31, 2020, 2019 and 2018 was approximately $0.5 million, $1.8 million and $0.7 million, respectively. The Company evaluated and adjusted the estimated useful life of certain equipment related to the production of BUNAVAIL that resulted in the additional depreciation expense. As such, the 2019 depreciation expense includes an additional $1.5 million associated with accelerated depreciation for BUNAVAIL specific equipment.