Property and Equipment

6 Months Ended

Jun. 30, 2020

Property, Plant and Equipment [Abstract]

Property and Equipment

Property and Equipment 

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

	June 30, 2020			December 31, 2019
Leasehold improvements	$	5,689		$	5,321
Laboratory and clean room equipment	15,379			14,894
Furniture and equipment	15,335			15,118
Construction in progress	1,150			972
Property and equipment, gross	37,553			36,305
Less accumulated depreciation	(26,733		)	(23,977		)
Property and equipment, net	$	10,820		$	12,328

Depreciation expense for the six months ended June 30, 2020 and 2019, was $2.9 million and $3.3 million, respectively, and $1.4 million and $1.6 million for the three months ended June 30, 2020 and 2019, respectively. These costs are allocated among cost of sales, research and development and selling, general and administrative expenses.