Property and equipment

12 Months Ended

Dec. 31, 2018

Property and equipment

Property and equipment

4. Property and equipment

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

	As of
	December 31,
	2018		2017
Laboratory and manufacturing equipment	$	4,127	$	2,969
Office furniture and equipment		789		689
Computers and software		786		459
Leasehold improvements		244		180
		5,946		4,297
Less: accumulated depreciation		(3,023)		(2,423)
Total	$	2,923	$	1,874

The Company incurred depreciation expense of $0.7 million, and $0.5 million for the years ended December 31, 2018 and 2017, respectively. Included in Laboratory and manufacturing equipment are 27 instruments, which are internally used by the Company. The laboratory & manufacturing equipment balance includes $1.4 million of cost and $0.7 million of accumulated depreciation related to these instruments.